/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): Antony Riakiotakis.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/editors/uvedit/uvedit_ops.c
 *  \ingroup eduv
 */


#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <string.h>

#include "MEM_guardedalloc.h"

#include "DNA_object_types.h"
#include "DNA_material_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_node_types.h"
#include "DNA_image_types.h"
#include "DNA_space_types.h"
#include "DNA_scene_types.h"

#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_array.h"
#include "BLI_utildefines.h"

#include "BKE_context.h"
#include "BKE_customdata.h"
#include "BKE_depsgraph.h"
#include "BKE_image.h"
#include "BKE_library.h"
#include "BKE_main.h"
#include "BKE_material.h"
#include "BKE_mesh.h"
#include "BKE_node.h"
#include "BKE_report.h"
#include "BKE_scene.h"
#include "BKE_tessmesh.h"

#include "ED_image.h"
#include "ED_mesh.h"
#include "ED_node.h"
#include "ED_uvedit.h"
#include "ED_object.h"
#include "ED_screen.h"
#include "ED_transform.h"

#include "RNA_access.h"
#include "RNA_define.h"

#include "WM_api.h"
#include "WM_types.h"

#include "UI_view2d.h"

#include "uvedit_intern.h"

#define EFA_F1_FLAG	2

/************************* state testing ************************/

int ED_uvedit_test(Object *obedit)
{
	BMEditMesh *em;
	int ret;

	if (!obedit)
		return 0;
	
	if (obedit->type != OB_MESH)
		return 0;

	em = BMEdit_FromObject(obedit);
	ret = EDBM_texFaceCheck(em);
	
	return ret;
}

static int ED_operator_uvedit_can_uv_sculpt(struct bContext *C)
{
	SpaceImage *sima= CTX_wm_space_image(C);
	ToolSettings *toolsettings = CTX_data_tool_settings(C);
	Object *obedit= CTX_data_edit_object(C);

	return ED_space_image_show_uvedit(sima, obedit) && !(toolsettings->use_uv_sculpt);
}

static int UNUSED_FUNCTION(ED_operator_uvmap_mesh)(bContext *C)
{
	Object *ob= CTX_data_active_object(C);

	if (ob && ob->type==OB_MESH) {
		Mesh *me = ob->data;

		if (CustomData_get_layer(&me->fdata, CD_MTFACE) != NULL)
			return 1;
	}

	return 0;
}
/**************************** object active image *****************************/

static int is_image_texture_node(bNode *node)
{
	return ELEM(node->type, SH_NODE_TEX_IMAGE, SH_NODE_TEX_ENVIRONMENT);
}

int ED_object_get_active_image(Object *ob, int mat_nr, Image **ima, ImageUser **iuser, bNode **node_r)
{
	Material *ma= give_current_material(ob, mat_nr);
	bNode *node= (ma && ma->use_nodes)? nodeGetActiveTexture(ma->nodetree): NULL;

	if (node && is_image_texture_node(node)) {
		if (ima) *ima= (Image*)node->id;
		if (iuser) *iuser= NULL;
		if (node_r) *node_r= node;
		return TRUE;
	}
	
	if (ima) *ima= NULL;
	if (iuser) *iuser= NULL;
	if (node_r) *node_r= node;

	return FALSE;
}

void ED_object_assign_active_image(Main *bmain, Object *ob, int mat_nr, Image *ima)
{
	Material *ma= give_current_material(ob, mat_nr);
	bNode *node= (ma && ma->use_nodes)? nodeGetActiveTexture(ma->nodetree): NULL;

	if (node && is_image_texture_node(node)) {
		node->id= &ima->id;
		ED_node_generic_update(bmain, ma->nodetree, node);
	}
}

/************************* assign image ************************/

void ED_uvedit_assign_image(Main *bmain, Scene *scene, Object *obedit, Image *ima, Image *previma)
{
	BMEditMesh *em;
	BMFace *efa;
	BMIter iter;
	MTexPoly *tf;
	int update= 0;
	
	/* skip assigning these procedural images... */
	if (ima && (ima->type==IMA_TYPE_R_RESULT || ima->type==IMA_TYPE_COMPOSITE))
		return;

	/* verify we have a mesh we can work with */
	if (!obedit || (obedit->type != OB_MESH))
		return;

	em = BMEdit_FromObject(obedit);
	if (!em || !em->bm->totface) {
		return;
	}

	if (scene_use_new_shading_nodes(scene)) {
		/* new shading system, assign image in material */
		int sloppy= 1;
		BMFace *efa= BM_active_face_get(em->bm, sloppy);

		if (efa)
			ED_object_assign_active_image(bmain, obedit, efa->mat_nr, ima);
	}
	else {
		/* old shading system, assign image to selected faces */
		
		/* ensure we have a uv map */
		if (!CustomData_has_layer(&em->bm->pdata, CD_MTEXPOLY)) {
			BM_data_layer_add(em->bm, &em->bm->pdata, CD_MTEXPOLY);
			BM_data_layer_add(em->bm, &em->bm->ldata, CD_MLOOPUV);
			update= 1;
		}

		/* now assign to all visible faces */
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);

			if (uvedit_face_visible(scene, previma, efa, tf)) {
				if (ima) {
					tf->tpage= ima;
					
					if (ima->id.us==0) id_us_plus(&ima->id);
					else id_lib_extern(&ima->id);
				}
				else {
					tf->tpage= NULL;
				}

				update = 1;
			}
		}

		/* and update depdency graph */
		if (update)
			DAG_id_tag_update(obedit->data, 0);
	}

}

/* dotile -	1, set the tile flag (from the space image)
 * 			2, set the tile index for the faces. */
static int uvedit_set_tile(Object *obedit, Image *ima, int curtile)
{
	BMEditMesh *em;
	BMFace *efa;
	BMIter iter;
	MTexPoly *tf;
	
	/* verify if we have something to do */
	if (!ima || !ED_uvedit_test(obedit))
		return 0;

	if ((ima->tpageflag & IMA_TILES) == 0)
		return 0;

	/* skip assigning these procedural images... */
	if (ima->type==IMA_TYPE_R_RESULT || ima->type==IMA_TYPE_COMPOSITE)
		return 0;
	
	em = BMEdit_FromObject(obedit);

	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);

		if (!BM_elem_flag_test(efa, BM_ELEM_HIDDEN) && BM_elem_flag_test(efa, BM_ELEM_SELECT))
			tf->tile= curtile; /* set tile index */
	}

	DAG_id_tag_update(obedit->data, 0);

	return 1;
}

/*********************** space conversion *********************/

static void uvedit_pixel_to_float(SpaceImage *sima, float *dist, float pixeldist)
{
	int width, height;

	if (sima) {
		ED_space_image_size(sima, &width, &height);
	}
	else {
		width= 256;
		height= 256;
	}

	dist[0]= pixeldist/width;
	dist[1]= pixeldist/height;
}

/*************** visibility and selection utilities **************/

int uvedit_face_visible_nolocal(Scene *scene, BMFace *efa)
{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SYNC_SELECTION)
		return (BM_elem_flag_test(efa, BM_ELEM_HIDDEN)==0);
	else
		return (BM_elem_flag_test(efa, BM_ELEM_HIDDEN)==0 && BM_elem_flag_test(efa, BM_ELEM_SELECT));
}

int uvedit_face_visible(Scene *scene, Image *ima, BMFace *efa, MTexPoly *tf)
{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SHOW_SAME_IMAGE)
		return (tf->tpage==ima)? uvedit_face_visible_nolocal(scene, efa): 0;
	else
		return uvedit_face_visible_nolocal(scene, efa);
}

int uvedit_face_selected(Scene *scene, BMEditMesh *em, BMFace *efa)
{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SYNC_SELECTION)
		return (BM_elem_flag_test(efa, BM_ELEM_SELECT));
	else {
		BMLoop *l;
		MLoopUV *luv;
		BMIter liter;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			if (!(luv->flag & MLOOPUV_VERTSEL))
				return 0;
		}

		return 1;
	}
}

int uvedit_face_select(Scene *scene, BMEditMesh *em, BMFace *efa)
{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SYNC_SELECTION)
		BM_elem_select_set(em->bm, efa, TRUE);
	else {
		BMLoop *l;
		MLoopUV *luv;
		BMIter liter;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			luv->flag |= MLOOPUV_VERTSEL;
		}

		return 1;
	}

	return 0;
}

int uvedit_face_deselect(Scene *scene, BMEditMesh *em, BMFace *efa)
{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SYNC_SELECTION) {
		BM_elem_select_set(em->bm, efa, FALSE);
	}
	else {
		BMLoop *l;
		MLoopUV *luv;
		BMIter liter;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			luv->flag &= ~MLOOPUV_VERTSEL;
		}

		return 1;
	}

	return 0;
}

int uvedit_edge_selected(BMEditMesh *em, Scene *scene, BMLoop *l)
{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SYNC_SELECTION) {
		if (ts->selectmode & SCE_SELECT_FACE) {
			return BM_elem_flag_test(l->f, BM_ELEM_SELECT);
		}
		else if (ts->selectmode == SCE_SELECT_EDGE) {
			return BM_elem_flag_test(l->e, BM_ELEM_SELECT);
		}
		else {
			return BM_elem_flag_test(l->v, BM_ELEM_SELECT) && 
			       BM_elem_flag_test(l->next->v, BM_ELEM_SELECT);
		}
	}
	else {
		MLoopUV *luv1, *luv2;

		luv1 = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
		luv2 = CustomData_bmesh_get(&em->bm->ldata, l->next->head.data, CD_MLOOPUV);

		return (luv1->flag & MLOOPUV_VERTSEL) && (luv2->flag & MLOOPUV_VERTSEL);
	}
}

void uvedit_edge_select(BMEditMesh *em, Scene *scene, BMLoop *l)

{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SYNC_SELECTION) {
		if (ts->selectmode & SCE_SELECT_FACE)
			BM_elem_select_set(em->bm, l->f, TRUE);
		else if (ts->selectmode & SCE_SELECT_EDGE)
			BM_elem_select_set(em->bm, l->e, TRUE);
		else {
			BM_elem_select_set(em->bm, l->e->v1, TRUE);
			BM_elem_select_set(em->bm, l->e->v2, TRUE);
		}
	}
	else {
		MLoopUV *luv1, *luv2;

		luv1 = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
		luv2 = CustomData_bmesh_get(&em->bm->ldata, l->next->head.data, CD_MLOOPUV);
		
		luv1->flag |= MLOOPUV_VERTSEL;
		luv2->flag |= MLOOPUV_VERTSEL;
	}
}

void uvedit_edge_deselect(BMEditMesh *em, Scene *scene, BMLoop *l)

{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SYNC_SELECTION) {
		if (ts->selectmode & SCE_SELECT_FACE)
			BM_elem_select_set(em->bm, l->f, FALSE);
		else if (ts->selectmode & SCE_SELECT_EDGE)
			BM_elem_select_set(em->bm, l->e, FALSE);
		else {
			BM_elem_select_set(em->bm, l->e->v1, FALSE);
			BM_elem_select_set(em->bm, l->e->v2, FALSE);
		}
	}
	else {
		MLoopUV *luv1, *luv2;

		luv1 = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
		luv2 = CustomData_bmesh_get(&em->bm->ldata, l->next->head.data, CD_MLOOPUV);
		
		luv1->flag &= ~MLOOPUV_VERTSEL;
		luv2->flag &= ~MLOOPUV_VERTSEL;
	}
}

int uvedit_uv_selected(BMEditMesh *em, Scene *scene, BMLoop *l)
{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SYNC_SELECTION) {
		if (ts->selectmode & SCE_SELECT_FACE)
			return BM_elem_flag_test(l->f, BM_ELEM_SELECT);
		else
			return BM_elem_flag_test(l->v, BM_ELEM_SELECT);
	}
	else {
		MLoopUV *luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);

		return luv->flag & MLOOPUV_VERTSEL;
	}
}

void uvedit_uv_select(BMEditMesh *em, Scene *scene, BMLoop *l)
{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SYNC_SELECTION) {
		if (ts->selectmode & SCE_SELECT_FACE)
			BM_elem_select_set(em->bm, l->f, TRUE);
		else
			BM_elem_select_set(em->bm, l->v, TRUE);
	}
	else {
		MLoopUV *luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
		
		luv->flag |= MLOOPUV_VERTSEL;
	}
}

void uvedit_uv_deselect(BMEditMesh *em, Scene *scene, BMLoop *l)
{
	ToolSettings *ts= scene->toolsettings;

	if (ts->uv_flag & UV_SYNC_SELECTION) {
		if (ts->selectmode & SCE_SELECT_FACE)
			BM_elem_select_set(em->bm, l->f, FALSE);
		else
			BM_elem_select_set(em->bm, l->v, FALSE);
	}
	else {
		MLoopUV *luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
		
		luv->flag &= ~MLOOPUV_VERTSEL;
	}
}

/*********************** live unwrap utilities ***********************/

void uvedit_live_unwrap_update(SpaceImage *sima, Scene *scene, Object *obedit)
{
	if (sima && (sima->flag & SI_LIVE_UNWRAP)) {
		ED_uvedit_live_unwrap_begin(scene, obedit);
		ED_uvedit_live_unwrap_re_solve();
		ED_uvedit_live_unwrap_end(0);
	}
}

/*********************** geometric utilities ***********************/
void poly_uv_center(BMEditMesh *em, BMFace *f, float cent[2])
{
	BMLoop *l;
	MLoopUV *luv;
	BMIter liter;

	zero_v2(cent);

	BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, f) {
		luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
		add_v2_v2(cent, luv->uv);
	}

	mul_v2_fl(cent, 1.0f / (float)f->len);
}


void uv_center(float uv[][2], float cent[2], int quad)
{
	if (quad) {
		cent[0] = (uv[0][0] + uv[1][0] + uv[2][0] + uv[3][0]) / 4.0f;
		cent[1] = (uv[0][1] + uv[1][1] + uv[2][1] + uv[3][1]) / 4.0f;
	}
	else {
		cent[0] = (uv[0][0] + uv[1][0] + uv[2][0]) / 3.0f;
		cent[1] = (uv[0][1] + uv[1][1] + uv[2][1]) / 3.0f;
	}
}

float uv_area(float uv[][2], int quad)
{
	if (quad)
		return area_tri_v2(uv[0], uv[1], uv[2]) + area_tri_v2(uv[0], uv[2], uv[3]); 
	else
		return area_tri_v2(uv[0], uv[1], uv[2]); 
}

float poly_uv_area(float uv[][2], int len)
{
	//BMESH_TODO: make this not suck
	//maybe use scanfill? I dunno.

	if (len >= 4)
		return area_tri_v2(uv[0], uv[1], uv[2]) + area_tri_v2(uv[0], uv[2], uv[3]); 
	else
		return area_tri_v2(uv[0], uv[1], uv[2]); 

	return 1.0;
}

void poly_copy_aspect(float uv_orig[][2], float uv[][2], float aspx, float aspy, int len)
{
	int i;
	for (i=0; i<len; i++) {
		uv[i][0] = uv_orig[i][0]*aspx;
		uv[i][1] = uv_orig[i][1]*aspy;
	}
}

void uv_copy_aspect(float uv_orig[][2], float uv[][2], float aspx, float aspy)
{
	uv[0][0] = uv_orig[0][0]*aspx;
	uv[0][1] = uv_orig[0][1]*aspy;
	
	uv[1][0] = uv_orig[1][0]*aspx;
	uv[1][1] = uv_orig[1][1]*aspy;
	
	uv[2][0] = uv_orig[2][0]*aspx;
	uv[2][1] = uv_orig[2][1]*aspy;
	
	uv[3][0] = uv_orig[3][0]*aspx;
	uv[3][1] = uv_orig[3][1]*aspy;
}

int ED_uvedit_minmax(Scene *scene, Image *ima, Object *obedit, float *min, float *max)
{
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tf;
	MLoopUV *luv;
	int sel;

	INIT_MINMAX2(min, max);

	sel= 0;
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tf))
			continue;
		
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			if (uvedit_uv_selected(em, scene, l)) {
				luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
				DO_MINMAX2(luv->uv, min, max); 
				sel = 1;
			}
		}
	}

	return sel;
}

static int ED_uvedit_median(Scene *scene, Image *ima, Object *obedit, float co[3])
{
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tf;
	MLoopUV *luv;
	unsigned int sel= 0;

	zero_v3(co);
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tf))
			continue;
		
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			if (uvedit_uv_selected(em, scene, l)) {
				add_v2_v2(co, luv->uv);
				sel++;
			}
		}
	}

	mul_v3_fl(co, 1.0f/(float)sel);

	return (sel != 0);
}

static int uvedit_center(Scene *scene, Image *ima, Object *obedit, float *cent, char mode)
{
	float min[2], max[2];
	int change= 0;
	
	if (mode==V3D_CENTER) { /* bounding box */
		if (ED_uvedit_minmax(scene, ima, obedit, min, max)) {
			change = 1;

			cent[0]= (min[0]+max[0])/2.0f;
			cent[1]= (min[1]+max[1])/2.0f;
		}
	}
	else {
		if (ED_uvedit_median(scene, ima, obedit, cent)) {
			change = 1;
		}

	}

	if (change) {
		return 1;
	}

	return 0;
}

/************************** find nearest ****************************/

void uv_find_nearest_edge(Scene *scene, Image *ima, BMEditMesh *em, float co[2], NearestHit *hit)
{
	MTexPoly *tf;
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MLoopUV *luv, *nextluv;
	float mindist, dist;
	int i;

	mindist= 1e10f;
	memset(hit, 0, sizeof(*hit));

	BM_mesh_elem_index_ensure(em->bm, BM_VERT);
	
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tf))
			continue;
		
		i = 0;
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			nextluv = CustomData_bmesh_get(&em->bm->ldata, l->next->head.data, CD_MLOOPUV);

			dist= dist_to_line_segment_v2(co, luv->uv, nextluv->uv);

			if (dist < mindist) {
				hit->tf= tf;
				hit->efa= efa;
				
				hit->l = l;
				hit->nextl = l->next;
				hit->luv = luv;
				hit->nextluv = nextluv;
				hit->lindex = i;
				hit->vert1 = BM_elem_index_get(hit->l->v);
				hit->vert2 = BM_elem_index_get(hit->l->next->v);

				mindist = dist;
			}

			i++;
		}
	}
}

static void find_nearest_uv_face(Scene *scene, Image *ima, BMEditMesh *em, float co[2], NearestHit *hit)
{
	MTexPoly *tf;
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MLoopUV *luv;
	float mindist, dist, cent[2];

	mindist= 1e10f;
	memset(hit, 0, sizeof(*hit));

	/*this will fill in hit.vert1 and hit.vert2*/
	uv_find_nearest_edge(scene, ima, em, co, hit);
	hit->l = hit->nextl = NULL;
	hit->luv = hit->nextluv = NULL;

	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tf))
			continue;
		
		cent[0]= cent[1]= 0.0f;
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);

			add_v2_v2(cent, luv->uv);
		}

		cent[0] /= efa->len;
		cent[1] /= efa->len;
		dist= fabs(co[0]- cent[0]) + fabs(co[1]- cent[1]);

		if (dist < mindist) {
			hit->tf= tf;
			hit->efa= efa;
			mindist= dist;
		}
	}
}

static int nearest_uv_between(BMEditMesh *em, BMFace *efa, int UNUSED(nverts), int id,
			      float co[2], float uv[2])
{
	BMLoop *l;
	MLoopUV *luv;
	BMIter iter;
	float m[3], v1[3], v2[3], c1, c2, *uv1, /* *uv2, */ /* UNUSED */ *uv3;
	int id1, id2, i;

	id1= (id+efa->len-1)%efa->len;
	id2= (id+efa->len+1)%efa->len;

	m[0]= co[0]-uv[0];
	m[1]= co[1]-uv[1];

	i = 0;
	BM_ITER(l, &iter, em->bm, BM_LOOPS_OF_FACE, efa) {
		luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
		
		if (i == id1)
			uv1 = luv->uv;
		else if (i == id)
			; /* uv2 = luv->uv; */ /* UNUSED */
		else if (i == id2)
			uv3 = luv->uv;

		i++;
	}

	sub_v3_v3v3(v1, uv1, uv);
	sub_v3_v3v3(v2, uv3, uv);

	/* m and v2 on same side of v-v1? */
	c1= v1[0]*m[1] - v1[1]*m[0];
	c2= v1[0]*v2[1] - v1[1]*v2[0];

	if (c1*c2 < 0.0f)
		return 0;

	/* m and v1 on same side of v-v2? */
	c1= v2[0]*m[1] - v2[1]*m[0];
	c2= v2[0]*v1[1] - v2[1]*v1[0];

	return (c1*c2 >= 0.0f);
}

void uv_find_nearest_vert(Scene *scene, Image *ima, BMEditMesh *em,
                          float co[2], float penalty[2], NearestHit *hit)
{
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tf;
	MLoopUV *luv;
	float mindist, dist;
	int i;

	/*this will fill in hit.vert1 and hit.vert2*/
	uv_find_nearest_edge(scene, ima, em, co, hit);
	hit->l = hit->nextl = NULL;
	hit->luv = hit->nextluv = NULL;

	mindist= 1e10f;
	memset(hit, 0, sizeof(*hit));
	
	BM_mesh_elem_index_ensure(em->bm, BM_VERT);

	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tf))
			continue;
		
		i = 0;
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);

			if (penalty && uvedit_uv_selected(em, scene, l))
				dist= fabs(co[0]-luv->uv[0])+penalty[0] + fabs(co[1]-luv->uv[1])+penalty[1];
			else
				dist= fabs(co[0]-luv->uv[0]) + fabs(co[1]-luv->uv[1]);

			if (dist<=mindist) {
				if (dist==mindist)
					if (!nearest_uv_between(em, efa, efa->len, i, co, luv->uv)) {
						i++;
						continue;
					}

				mindist= dist;

				hit->l = l;
				hit->nextl = l->next;
				hit->luv = luv;
				hit->nextluv = CustomData_bmesh_get(&em->bm->ldata, l->next->head.data, CD_MLOOPUV);
				hit->tf= tf;
				hit->efa= efa;
				hit->lindex = i;
				hit->vert1 = BM_elem_index_get(hit->l->v);
			}

			i++;
		}
	}
}

int ED_uvedit_nearest_uv(Scene *scene, Object *obedit, Image *ima, float co[2], float uv[2])
{
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tf;
	MLoopUV *luv;
	float mindist, dist;
	int found= 0;

	mindist= 1e10f;
	uv[0]= co[0];
	uv[1]= co[1];
	
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tf))
			continue;
		
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			dist= fabs(co[0]-luv->uv[0]) + fabs(co[1]-luv->uv[1]);

			if (dist<=mindist) {
				mindist= dist;

				uv[0]= luv->uv[0];
				uv[1]= luv->uv[1];
				found= 1;
			}
		}
	}

	return found;
}

/*********************** loop select ***********************/

static void uv_vertex_loop_flag(UvMapVert *first)
{
	UvMapVert *iterv;
	int count= 0;

	for (iterv=first; iterv; iterv=iterv->next) {
		if (iterv->separate && iterv!=first)
			break;

		count++;
	}
	
	if (count < 5)
		first->flag= 1;
}

static UvMapVert *uv_vertex_map_get(UvVertMap *vmap, BMFace *efa, int a)
{
	UvMapVert *iterv, *first;
	BMLoop *l;

	l = BM_iter_at_index(NULL, BM_LOOPS_OF_FACE, efa, a);
	first= EDBM_get_uv_map_vert(vmap,  BM_elem_index_get(l->v));

	for (iterv=first; iterv; iterv=iterv->next) {
		if (iterv->separate)
			first= iterv;
		if (iterv->f == BM_elem_index_get(efa))
			return first;
	}
	
	return NULL;
}

UvElement *ED_get_uv_element(UvElementMap *map, BMFace *efa, BMLoop *l)
{
	UvElement *element;

	element = map->vert[BM_elem_index_get(l->v)];

	for (; element; element = element->next)
		if (element->face == efa)
			return element;

	return NULL;
}

static int uv_edge_tag_faces(BMEditMesh *em, UvMapVert *first1, UvMapVert *first2, int *totface)
{
	UvMapVert *iterv1, *iterv2;
	BMFace *efa;
	int tot = 0;

	/* count number of faces this edge has */
	for (iterv1=first1; iterv1; iterv1=iterv1->next) {
		if (iterv1->separate && iterv1 != first1)
			break;

		for (iterv2=first2; iterv2; iterv2=iterv2->next) {
			if (iterv2->separate && iterv2 != first2)
				break;

			if (iterv1->f == iterv2->f) {
				/* if face already tagged, don't do this edge */
				efa= EDBM_get_face_for_index(em, iterv1->f);
				if (BMO_elem_flag_test(em->bm, efa, EFA_F1_FLAG))
					return 0;

				tot++;
				break;
			}
		}
	}

	if (*totface == 0) /* start edge */
		*totface= tot;
	else if (tot != *totface) /* check for same number of faces as start edge */
		return 0;

	/* tag the faces */
	for (iterv1=first1; iterv1; iterv1=iterv1->next) {
		if (iterv1->separate && iterv1 != first1)
			break;

		for (iterv2=first2; iterv2; iterv2=iterv2->next) {
			if (iterv2->separate && iterv2 != first2)
				break;

			if (iterv1->f == iterv2->f) {
				efa= EDBM_get_face_for_index(em, iterv1->f);
				BMO_elem_flag_enable(em->bm, efa, EFA_F1_FLAG);
				break;
			}
		}
	}

	return 1;
}

static int select_edgeloop(Scene *scene, Image *ima, BMEditMesh *em, NearestHit *hit, float limit[2], int extend)
{
	BMFace *efa;
	BMIter iter, liter;
	BMLoop *l;
	MTexPoly *tf;
	UvVertMap *vmap;
	UvMapVert *iterv1, *iterv2;
	int a, count, looking, nverts, starttotf, select;

	/* setup */
	EDBM_init_index_arrays(em, 0, 0, 1);
	vmap= EDBM_make_uv_vert_map(em, 0, 0, limit);

	BM_mesh_elem_index_ensure(em->bm, BM_VERT);

	count = 0;
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		if (!extend) {
			uvedit_face_deselect(scene, em, efa);
		}
		
		BMO_elem_flag_disable(em->bm, efa, EFA_F1_FLAG);

		BM_elem_index_set(efa, count); /* set_inline */

		count++;
	}
	em->bm->elem_index_dirty &= ~BM_FACE;

	/* set flags for first face and verts */
	nverts= hit->efa->len;
	iterv1= uv_vertex_map_get(vmap, hit->efa, hit->lindex);
	iterv2= uv_vertex_map_get(vmap, hit->efa, (hit->lindex+1)%nverts);
	uv_vertex_loop_flag(iterv1);
	uv_vertex_loop_flag(iterv2);

	starttotf= 0;
	uv_edge_tag_faces(em, iterv1, iterv2, &starttotf);

	/* sorry, first edge isn't even ok */
	if (iterv1->flag==0 && iterv2->flag==0) looking= 0;
	else looking= 1;

	/* iterate */
	while (looking) {
		looking= 0;

		/* find correct valence edges which are not tagged yet, but connect to tagged one */

		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);

			if (!BMO_elem_flag_test(em->bm, efa, EFA_F1_FLAG) && uvedit_face_visible(scene, ima, efa, tf)) {
				nverts= efa->len;
				for (a=0; a<nverts; a++) {
					/* check face not hidden and not tagged */
					iterv1= uv_vertex_map_get(vmap, efa, a);
					iterv2= uv_vertex_map_get(vmap, efa, (a+1)%nverts);
					
					if (!iterv1 || !iterv2)
						continue;

					/* check if vertex is tagged and has right valence */
					if (iterv1->flag || iterv2->flag) {
						if (uv_edge_tag_faces(em, iterv1, iterv2, &starttotf)) {
							looking= 1;
							BMO_elem_flag_enable(em->bm, efa, EFA_F1_FLAG);

							uv_vertex_loop_flag(iterv1);
							uv_vertex_loop_flag(iterv2);
							break;
						}
					}
				}
			}
		}
	}

	/* do the actual select/deselect */
	nverts= hit->efa->len;
	iterv1= uv_vertex_map_get(vmap, hit->efa, hit->lindex);
	iterv2= uv_vertex_map_get(vmap, hit->efa, (hit->lindex+1)%nverts);
	iterv1->flag= 1;
	iterv2->flag= 1;

	if (extend) {
		if (uvedit_uv_selected(em, scene, hit->l))
			select= 0;
		else
			select= 1;
	}
	else
		select= 1;
	
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		a = 0;
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			iterv1= uv_vertex_map_get(vmap, efa, a);

			if (iterv1->flag) {
				if (select) uvedit_uv_select(em, scene, l);
				else uvedit_uv_deselect(em, scene, l);
			}

			a++;
		}
	}

	/* cleanup */
	EDBM_free_uv_vert_map(vmap);
	EDBM_free_index_arrays(em);

	return (select)? 1: -1;
}

/*********************** linked select ***********************/

static void select_linked(Scene *scene, Image *ima, BMEditMesh *em, float limit[2], NearestHit *hit, int extend)
{
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tf;
	MLoopUV *luv;
	UvVertMap *vmap;
	UvMapVert *vlist, *iterv, *startv;
	int i, stacksize= 0, *stack;
	unsigned int a;
	char *flag;

	EDBM_init_index_arrays(em, 0, 0, 1); /* we can use this too */
	vmap= EDBM_make_uv_vert_map(em, 1, 1, limit);

	if (vmap == NULL)
		return;

	stack= MEM_mallocN(sizeof(*stack)*(em->bm->totface+1), "UvLinkStack");
	flag= MEM_callocN(sizeof(*flag)*em->bm->totface, "UvLinkFlag");

	if (!hit) {
		BM_ITER_INDEX(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL, a) {
			tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);

			if (uvedit_face_visible(scene, ima, efa, tf)) {
				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);

					if (luv->flag & MLOOPUV_VERTSEL) {
						stack[stacksize]= a;
						stacksize++;
						flag[a]= 1;

						break;
					}
				}
			}
		}
	}
	else {
		a = 0;
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			if (efa == hit->efa) {
				stack[stacksize]= a;
				stacksize++;
				flag[a]= 1;
				break;
			}

			a++;
		}
	}

	while (stacksize > 0) {
		int j;

		stacksize--;
		a= stack[stacksize];
		
		j = 0;
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			if (j==a)
				break;

			j++;
		}

		i = 0;
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {

			/* make_uv_vert_map_EM sets verts tmp.l to the indices */
			vlist= EDBM_get_uv_map_vert(vmap, BM_elem_index_get(l->v));
			
			startv= vlist;

			for (iterv=vlist; iterv; iterv=iterv->next) {
				if (iterv->separate)
					startv= iterv;
				if (iterv->f == a)
					break;
			}

			for (iterv=startv; iterv; iterv=iterv->next) {
				if ((startv != iterv) && (iterv->separate))
					break;
				else if (!flag[iterv->f]) {
					flag[iterv->f]= 1;
					stack[stacksize]= iterv->f;
					stacksize++;
				}
			}

			i++;
		}
	}

	if (!extend) {
		a = 0;
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
				luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
				
				if (flag[a])
					luv->flag |= MLOOPUV_VERTSEL;
				else
					luv->flag &= ~MLOOPUV_VERTSEL;
			}
			a++;
		}
	}
	else {
		a = 0;
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			if (!flag[a]) {
				a++;
				continue;
			}
			
			BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
				luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
						
				if (luv->flag & MLOOPUV_VERTSEL)
					break;
			}
			
			if (l)
				break;
			
			a++;
		}

		if (efa) {
			a = 0;
			BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
				if (!flag[a]) {
					a++;
					continue;
				}

				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
					
					luv->flag &= ~MLOOPUV_VERTSEL;
				}

				a++;
			}
		}
		else {
			a = 0;
			BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
				if (!flag[a]) {
					a++;
					continue;
				}

				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
					
					luv->flag |= MLOOPUV_VERTSEL;
				}

				a++;
			}
		}
	}
	
	MEM_freeN(stack);
	MEM_freeN(flag);
	EDBM_free_uv_vert_map(vmap);
	EDBM_free_index_arrays(em);
}

/* WATCH IT: this returns first selected UV,
 * not ideal in many cases since there could be multiple */
static float *uv_sel_co_from_eve(Scene *scene, Image *ima, BMEditMesh *em, BMVert *eve)
{
	BMIter liter;
	BMLoop *l;

	BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_VERT, eve) {
		MTexPoly *tf = CustomData_bmesh_get(&em->bm->pdata, l->f->head.data, CD_MTEXPOLY);

		if (!uvedit_face_visible(scene, ima, l->f, tf))
			continue;

		if (uvedit_uv_selected(em, scene, l)) {
			MLoopUV *luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			return luv->uv;
		}
	}

	return NULL;
}

/* ******************** align operator **************** */

static void weld_align_uv(bContext *C, int tool)
{
	SpaceImage *sima;
	Scene *scene;
	Object *obedit;
	Image *ima;
	BMEditMesh *em;
	BMIter iter, liter;
	MTexPoly *tf;
	MLoopUV *luv;
	float cent[2], min[2], max[2];
	
	scene = CTX_data_scene(C);
	obedit = CTX_data_edit_object(C);
	em = BMEdit_FromObject(obedit);
	ima = CTX_data_edit_image(C);
	sima = CTX_wm_space_image(C);

	INIT_MINMAX2(min, max);

	if (tool == 'a') {
		BMFace *efa;
		BMLoop *l;

		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);

			if (!uvedit_face_visible(scene, ima, efa, tf))
				continue;

			BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
				if (uvedit_uv_selected(em, scene, l)) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
					DO_MINMAX2(luv->uv, min, max);
				}
			}
		}

		tool= (max[0]-min[0] >= max[1]-min[1])? 'y': 'x';
	}

	uvedit_center(scene, ima, obedit, cent, 0);

	if (tool == 'x' || tool == 'w') {
		BMFace *efa;
		BMLoop *l;

		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
			if (!uvedit_face_visible(scene, ima, efa, tf))
				continue;

			BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
				if (uvedit_uv_selected(em, scene, l)) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
					luv->uv[0] = cent[0];
				}

			}
		}
	}

	if (tool == 'y' || tool == 'w') {
		BMFace *efa;
		BMLoop *l;

		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
			if (!uvedit_face_visible(scene, ima, efa, tf))
				continue;

			BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
				if (uvedit_uv_selected(em, scene, l)) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
					luv->uv[1] = cent[1];
				}

			}
		}
	}

	if (tool == 's' || tool == 't' || tool == 'u') {
		BMEdge *eed;
		BMLoop *l;
		BMVert *eve;
		BMVert *eve_start;
		BMIter iter, liter, eiter;

		/* clear tag */
		BM_ITER(eve, &iter, em->bm, BM_VERTS_OF_MESH, NULL) {
			BM_elem_flag_disable(eve, BM_ELEM_TAG);
		}

		/* tag verts with a selected UV */
		BM_ITER(eve, &iter, em->bm, BM_VERTS_OF_MESH, NULL) {
			BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_VERT, eve) {
				tf = CustomData_bmesh_get(&em->bm->pdata, l->f->head.data, CD_MTEXPOLY);

				if (!uvedit_face_visible(scene, ima, l->f, tf))
					continue;

				if (uvedit_uv_selected(em, scene, l)) {
					BM_elem_flag_enable(eve, BM_ELEM_TAG);
					break;
				}
			}
		}

		/* flush vertex tags to edges */
		BM_ITER(eed, &iter, em->bm, BM_EDGES_OF_MESH, NULL) {
			BM_elem_flag_set(eed, BM_ELEM_TAG, (BM_elem_flag_test(eed->v1, BM_ELEM_TAG) &&
			                                    BM_elem_flag_test(eed->v2, BM_ELEM_TAG)));
		}

		/* find a vertex with only one tagged edge */
		eve_start = NULL;
		BM_ITER(eve, &iter, em->bm, BM_VERTS_OF_MESH, NULL) {
			int tot_eed_tag = 0;
			BM_ITER(eed, &eiter, em->bm, BM_EDGES_OF_VERT, eve) {
				if (BM_elem_flag_test(eed, BM_ELEM_TAG)) {
					tot_eed_tag++;
				}
			}

			if (tot_eed_tag == 1) {
				eve_start = eve;
				break;
			}
		}

		if (eve_start) {
			BMVert **eve_line = NULL;
			BMVert *eve_next = NULL;
			BLI_array_declare(eve_line);
			int i;

			eve = eve_start;

			/* walk over edges, building an array of verts in a line */
			while (eve) {
				BLI_array_append(eve_line, eve);
				/* don't touch again */
				BM_elem_flag_disable(eve, BM_ELEM_TAG);

				eve_next = NULL;

				/* find next eve */
				BM_ITER(eed, &eiter, em->bm, BM_EDGES_OF_VERT, eve) {
					if (BM_elem_flag_test(eed, BM_ELEM_TAG)) {
						BMVert *eve_other = BM_edge_other_vert(eed, eve);
						if (BM_elem_flag_test(eve_other, BM_ELEM_TAG)) {
							/* this is a tagged vert we didnt walk over yet, step onto it */
							eve_next = eve_other;
							break;
						}
					}
				}

				eve = eve_next;
			}

			/* now we have all verts, make into a line */
			if (BLI_array_count(eve_line) > 2) {

				/* we know the returns from these must be valid */
				float *uv_start = uv_sel_co_from_eve(scene, ima, em, eve_line[0]);
				float *uv_end   = uv_sel_co_from_eve(scene, ima, em, eve_line[BLI_array_count(eve_line) - 1]);

				if (tool == 't') {
					uv_start[0] = uv_end[0] = (uv_start[0] + uv_end[0]) * 0.5f;
				}
				else if (tool == 'u') {
					uv_start[1] = uv_end[1] = (uv_start[1] + uv_end[1]) * 0.5f;
				}

				/* go over all verts except for endpoints */
				for (i = 0; i < BLI_array_count(eve_line); i++) {
					BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_VERT, eve_line[i]) {
						tf = CustomData_bmesh_get(&em->bm->pdata, l->f->head.data, CD_MTEXPOLY);

						if (!uvedit_face_visible(scene, ima, l->f, tf))
							continue;

						if (uvedit_uv_selected(em, scene, l)) {
							MLoopUV *luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
							closest_to_line_segment_v2(luv->uv, luv->uv, uv_start, uv_end);
						}
					}
				}
			}
			else {
				/* error - not a line, needs 3+ points  */
			}

			if (eve_line) {
				MEM_freeN(eve_line);
			}
		}
		else {
			/* error - cant find an endpoint */
		}
	}


	uvedit_live_unwrap_update(sima, scene, obedit);
	DAG_id_tag_update(obedit->data, 0);
	WM_event_add_notifier(C, NC_GEOM|ND_DATA, obedit->data);
}

static int align_exec(bContext *C, wmOperator *op)
{
	weld_align_uv(C, RNA_enum_get(op->ptr, "axis"));

	return OPERATOR_FINISHED;
}

static void UV_OT_align(wmOperatorType *ot)
{
	static EnumPropertyItem axis_items[] = {
		{'s', "ALIGN_S", 0, "Straighten", "Align UVs along the line defined by the endpoints"},
		{'t', "ALIGN_T", 0, "Straighten X", "Align UVs along the line defined by the endpoints along the X axis"},
		{'u', "ALIGN_U", 0, "Straighten Y", "Align UVs along the line defined by the endpoints along the Y axis"},
		{'a', "ALIGN_AUTO", 0, "Align Auto", "Automatically choose the axis on which there is most alignment already"},
		{'x', "ALIGN_X", 0, "Align X", "Align UVs on X axis"},
		{'y', "ALIGN_Y", 0, "Align Y", "Align UVs on Y axis"},
		{0, NULL, 0, NULL, NULL}};

	/* identifiers */
	ot->name = "Align";
	ot->description = "Align selected UV vertices to an axis";
	ot->idname = "UV_OT_align";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = align_exec;
	ot->poll = ED_operator_image_active;	/* requires space image */;

	/* properties */
	RNA_def_enum(ot->srna, "axis", axis_items, 'a', "Axis", "Axis to align UV locations on");
}

/* ******************** weld operator **************** */

static int weld_exec(bContext *C, wmOperator *UNUSED(op))
{
	weld_align_uv(C, 'w');

	return OPERATOR_FINISHED;
}

static void UV_OT_weld(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Weld";
	ot->description = "Weld selected UV vertices together";
	ot->idname = "UV_OT_weld";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = weld_exec;
	ot->poll = ED_operator_uvedit;
}


/* ******************** (de)select all operator **************** */

static void select_all_perform(bContext *C, int action)
{
	Scene *scene;
	ToolSettings *ts;
	Object *obedit;
	BMEditMesh *em;
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	Image *ima;
	MTexPoly *tf;
	MLoopUV *luv;
	
	scene = CTX_data_scene(C);
	ts = CTX_data_tool_settings(C);
	obedit = CTX_data_edit_object(C);
	em = BMEdit_FromObject(obedit);
	ima = CTX_data_edit_image(C);
	
	if (ts->uv_flag & UV_SYNC_SELECTION) {

		switch (action) {
		case SEL_TOGGLE:
			EDBM_select_toggle_all(BMEdit_FromObject(obedit));
			break;
		case SEL_SELECT:
			EDBM_flag_enable_all(em, BM_ELEM_SELECT);
			break;
		case SEL_DESELECT:
			EDBM_flag_disable_all(em, BM_ELEM_SELECT);
			break;
		case SEL_INVERT:
			EDBM_select_swap(em);
			break;
		}
	}
	else {
		if (action == SEL_TOGGLE) {
			action = SEL_SELECT;
			BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
				tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
	
				if (!uvedit_face_visible(scene, ima, efa, tf))
					continue;

				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);

					if (luv->flag & MLOOPUV_VERTSEL) {
						action = SEL_DESELECT;
						break;
					}
				}
			}
		}
	
		
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);

			if (!uvedit_face_visible(scene, ima, efa, tf))
				continue;

			BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
				luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);

				switch (action) {
				case SEL_SELECT:
					luv->flag |= MLOOPUV_VERTSEL;
					break;
				case SEL_DESELECT:
					luv->flag &= ~MLOOPUV_VERTSEL;
					break;
				case SEL_INVERT:
					luv->flag ^= MLOOPUV_VERTSEL;
					break;
				}
			}
		}
	}
}

static int select_all_exec(bContext *C, wmOperator *op)
{
	Object *obedit= CTX_data_edit_object(C);
	int action= RNA_enum_get(op->ptr, "action");

	select_all_perform(C, action);

	WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);

	return OPERATOR_FINISHED;
}

static void UV_OT_select_all(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "(De)select All";
	ot->description = "Change selection of all UV vertices";
	ot->idname = "UV_OT_select_all";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = select_all_exec;
	ot->poll = ED_operator_uvedit;

	WM_operator_properties_select_all(ot);
}

/* ******************** mouse select operator **************** */

static int sticky_select(float *limit, int hitv[4], int v, float *hituv[4], float *uv, int sticky, int hitlen)
{
	int i;

	/* this function test if some vertex needs to selected
	 * in addition to the existing ones due to sticky select */
	if (sticky == SI_STICKY_DISABLE)
		return 0;

	for (i=0; i<hitlen; i++) {
		if (hitv[i] == v) {
			if (sticky == SI_STICKY_LOC) {
				if (fabsf(hituv[i][0]-uv[0]) < limit[0] && fabsf(hituv[i][1]-uv[1]) < limit[1])
					return 1;
			}
			else if (sticky == SI_STICKY_VERTEX)
				return 1;
		}
	}

	return 0;
}

static int mouse_select(bContext *C, float co[2], int extend, int loop)
{
	SpaceImage *sima = CTX_wm_space_image(C);
	Scene *scene = CTX_data_scene(C);
	ToolSettings *ts = CTX_data_tool_settings(C);
	Object *obedit = CTX_data_edit_object(C);
	Image *ima = CTX_data_edit_image(C);
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tf;
	MLoopUV *luv;
	NearestHit hit;
	int i, select = 1, selectmode, sticky, sync, *hitv=NULL, nvert;
	BLI_array_declare(hitv);
	int flush = 0, hitlen=0; /* 0 == don't flush, 1 == sel, -1 == desel;  only use when selection sync is enabled */
	float limit[2], **hituv = NULL;
	BLI_array_declare(hituv);
	float penalty[2];

	/* notice 'limit' is the same no matter the zoom level, since this is like
	 * remove doubles and could annoying if it joined points when zoomed out.
	 * 'penalty' is in screen pixel space otherwise zooming in on a uv-vert and
	 * shift-selecting can consider an adjacent point close enough to add to
	 * the selection rather than de-selecting the closest. */

	uvedit_pixel_to_float(sima, limit, 0.05f);
	uvedit_pixel_to_float(sima, penalty, 5.0f / sima->zoom);

	/* retrieve operation mode */
	if (ts->uv_flag & UV_SYNC_SELECTION) {
		sync= 1;

		if (ts->selectmode & SCE_SELECT_FACE)
			selectmode= UV_SELECT_FACE;
		else if (ts->selectmode & SCE_SELECT_EDGE)
			selectmode= UV_SELECT_EDGE;
		else
			selectmode= UV_SELECT_VERTEX;

		sticky= SI_STICKY_DISABLE;
	}
	else {
		sync= 0;
		selectmode= ts->uv_selectmode;
		sticky= (sima)? sima->sticky: 1;
	}

	/* find nearest element */
	if (loop) {
		/* find edge */
		uv_find_nearest_edge(scene, ima, em, co, &hit);
		if (hit.efa == NULL) {
			BLI_array_free(hitv);
			BLI_array_free(hituv);
			return OPERATOR_CANCELLED;
		}

		hitlen = 0;
	}
	else if (selectmode == UV_SELECT_VERTEX) {
		/* find vertex */
		uv_find_nearest_vert(scene, ima, em, co, penalty, &hit);
		if (hit.efa == NULL) {
			BLI_array_free(hitv);
			BLI_array_free(hituv);
			return OPERATOR_CANCELLED;
		}

		/* mark 1 vertex as being hit */
		BLI_array_growitems(hitv, hit.efa->len);
		BLI_array_growitems(hituv, hit.efa->len);
		for (i=0; i<hit.efa->len; i++) {
			hitv[i]= 0xFFFFFFFF;
		}

		hitv[hit.lindex]= hit.vert1;
		hituv[hit.lindex]= hit.luv->uv;

		hitlen = hit.efa->len;
	}
	else if (selectmode == UV_SELECT_EDGE) {
		/* find edge */
		uv_find_nearest_edge(scene, ima, em, co, &hit);
		if (hit.efa == NULL) {
			BLI_array_free(hitv);
			BLI_array_free(hituv);
			return OPERATOR_CANCELLED;
		}

		/* mark 2 edge vertices as being hit */
		BLI_array_growitems(hitv,  hit.efa->len);
		BLI_array_growitems(hituv, hit.efa->len);
		for (i=0; i < hit.efa->len; i++) {
			hitv[i]= 0xFFFFFFFF;
		}

		nvert= hit.efa->len;

		hitv[hit.lindex]= hit.vert1;
		hitv[(hit.lindex+1)%nvert]= hit.vert2;
		hituv[hit.lindex]= hit.luv->uv;
		hituv[(hit.lindex+1)%nvert]= hit.nextluv->uv;

		hitlen = hit.efa->len;
	}
	else if (selectmode == UV_SELECT_FACE) {
		/* find face */
		find_nearest_uv_face(scene, ima, em, co, &hit);
		if (hit.efa == NULL) {
			BLI_array_free(hitv);
			BLI_array_free(hituv);
			return OPERATOR_CANCELLED;
		}
		
		/* make active */
		BM_active_face_set(em->bm, hit.efa);

		/* mark all face vertices as being hit */

		BLI_array_growitems(hitv,  hit.efa->len);
		BLI_array_growitems(hituv, hit.efa->len);
		i = 0;
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, hit.efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			hituv[i]= luv->uv;
			hitv[i] = BM_elem_index_get(l->v);
			i++;
		}
		
		hitlen = hit.efa->len;
	}
	else if (selectmode == UV_SELECT_ISLAND) {
		uv_find_nearest_vert(scene, ima, em, co, NULL, &hit);

		if (hit.efa==NULL) {
			BLI_array_free(hitv);
			BLI_array_free(hituv);
			return OPERATOR_CANCELLED;
		}

		hitlen = 0;
	}
	else {
		hitlen = 0;
		BLI_array_free(hitv);
		BLI_array_free(hituv);
		return OPERATOR_CANCELLED;
	}

	/* do selection */
	if (loop) {
		flush= select_edgeloop(scene, ima, em, &hit, limit, extend);
	}
	else if (selectmode == UV_SELECT_ISLAND) {
		select_linked(scene, ima, em, limit, &hit, extend);
	}
	else if (extend) {
		if (selectmode == UV_SELECT_VERTEX) {
			/* (de)select uv vertex */
			if (uvedit_uv_selected(em, scene, hit.l)) {
				uvedit_uv_deselect(em, scene, hit.l);
				select= 0;
			}
			else {
				uvedit_uv_select(em, scene, hit.l);
				select= 1;
			}
			flush = 1;
		}
		else if (selectmode == UV_SELECT_EDGE) {
			/* (de)select edge */
			if (uvedit_edge_selected(em, scene, hit.l)) {
				uvedit_edge_deselect(em, scene, hit.l);
				select= 0;
			}
			else {
				uvedit_edge_select(em, scene, hit.l);
				select= 1;
			}
			flush = 1;
		}
		else if (selectmode == UV_SELECT_FACE) {
			/* (de)select face */
			if (uvedit_face_selected(scene, em, hit.efa)) {
				uvedit_face_deselect(scene, em, hit.efa);
				select= 0;
			}
			else {
				uvedit_face_select(scene, em, hit.efa);
				select= 1;
			}
			flush = -1;
		}

		/* (de)select sticky uv nodes */
		if (sticky != SI_STICKY_DISABLE) {

			BM_mesh_elem_index_ensure(em->bm, BM_VERT);

			/* deselect */
			if (select==0) {
				BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
					tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
					if (!uvedit_face_visible(scene, ima, efa, tf))
						continue;

					BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
						luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
						if (sticky_select(limit, hitv, BM_elem_index_get(l->v), hituv, luv->uv, sticky, hitlen))
							uvedit_uv_deselect(em, scene, l);
					}
				}
				flush = -1;
			}
			/* select */
			else {
				BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
					tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
					if (!uvedit_face_visible(scene, ima, efa, tf))
						continue;

					BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
						luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
						if (sticky_select(limit, hitv, BM_elem_index_get(l->v), hituv, luv->uv, sticky, hitlen))
							uvedit_uv_select(em, scene, l);
					}
				}

				flush = 1;
			}			
		}
	}
	else {
		/* deselect all */
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			uvedit_face_deselect(scene, em, efa);
		}

		if (selectmode == UV_SELECT_VERTEX) {
			/* select vertex */
			uvedit_uv_select(em, scene, hit.l);
			flush= 1;
		}
		else if (selectmode == UV_SELECT_EDGE) {
			/* select edge */
			uvedit_edge_select(em, scene, hit.l);
			flush= 1;
		}
		else if (selectmode == UV_SELECT_FACE) {
			/* select face */
			uvedit_face_select(scene, em, hit.efa);
		}

		/* select sticky uvs */
		if (sticky != SI_STICKY_DISABLE) {
			BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
				tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
				if (!uvedit_face_visible(scene, ima, efa, tf))
					continue;
				
				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					if (sticky == SI_STICKY_DISABLE) continue;
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);

					if (sticky_select(limit, hitv, BM_elem_index_get(l->v), hituv, luv->uv, sticky, hitlen))
						uvedit_uv_select(em, scene, l);

					flush= 1;
				}
			}
		}
	}

#if 0	/* BM_elem_select_set API handles all of this? */

	if (sync) {
		/* flush for mesh selection */
		if (ts->selectmode != SCE_SELECT_FACE) {
			if (flush==1)		EDBM_select_flush(em);
			else if (flush==-1)	EDBM_deselect_flush(em);
		}
	}
#else
	(void)flush; /* flush is otherwise UNUSED */
	(void)sync; /* sync is otherwise UNUSED */
#endif

	DAG_id_tag_update(obedit->data, 0);
	WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);

	BLI_array_free(hitv);
	BLI_array_free(hituv);

	return OPERATOR_PASS_THROUGH|OPERATOR_FINISHED;
}

static int select_exec(bContext *C, wmOperator *op)
{
	float co[2];
	int extend, loop;

	RNA_float_get_array(op->ptr, "location", co);
	extend= RNA_boolean_get(op->ptr, "extend");
	loop= 0;

	return mouse_select(C, co, extend, loop);
}

static int select_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
	ARegion *ar= CTX_wm_region(C);
	float co[2];

	UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &co[0], &co[1]);
	RNA_float_set_array(op->ptr, "location", co);

	return select_exec(C, op);
}

static void UV_OT_select(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Select";
	ot->description = "Select UV vertices";
	ot->idname = "UV_OT_select";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = select_exec;
	ot->invoke = select_invoke;
	ot->poll = ED_operator_image_active;	/* requires space image */;

	/* properties */
	RNA_def_boolean(ot->srna, "extend", 0,
		"Extend", "Extend selection rather than clearing the existing selection");
	RNA_def_float_vector(ot->srna, "location", 2, NULL, -FLT_MAX, FLT_MAX,
		"Location", "Mouse location in normalized coordinates, 0.0 to 1.0 is within the image bounds", -100.0f, 100.0f);
}

/* ******************** loop select operator **************** */

static int select_loop_exec(bContext *C, wmOperator *op)
{
	float co[2];
	int extend, loop;

	RNA_float_get_array(op->ptr, "location", co);
	extend= RNA_boolean_get(op->ptr, "extend");
	loop= 1;

	return mouse_select(C, co, extend, loop);
}

static int select_loop_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
	ARegion *ar= CTX_wm_region(C);
	float co[2];

	UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &co[0], &co[1]);
	RNA_float_set_array(op->ptr, "location", co);

	return select_loop_exec(C, op);
}

static void UV_OT_select_loop(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Loop Select";
	ot->description = "Select a loop of connected UV vertices";
	ot->idname = "UV_OT_select_loop";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = select_loop_exec;
	ot->invoke = select_loop_invoke;
	ot->poll = ED_operator_image_active;	/* requires space image */;

	/* properties */
	RNA_def_boolean(ot->srna, "extend", 0,
		"Extend", "Extend selection rather than clearing the existing selection");
	RNA_def_float_vector(ot->srna, "location", 2, NULL, -FLT_MAX, FLT_MAX,
		"Location", "Mouse location in normalized coordinates, 0.0 to 1.0 is within the image bounds", -100.0f, 100.0f);
}

/* ******************** linked select operator **************** */

static int select_linked_internal(bContext *C, wmOperator *op, wmEvent *event, int pick)
{
	SpaceImage *sima = CTX_wm_space_image(C);
	Scene *scene = CTX_data_scene(C);
	ToolSettings *ts = CTX_data_tool_settings(C);
	Object *obedit = CTX_data_edit_object(C);
	Image *ima = CTX_data_edit_image(C);
	BMEditMesh *em = BMEdit_FromObject(obedit);
	float limit[2];
	int extend;

	NearestHit hit, *hit_p= NULL;

	if (ts->uv_flag & UV_SYNC_SELECTION) {
		BKE_report(op->reports, RPT_ERROR, "Can't select linked when sync selection is enabled");
		return OPERATOR_CANCELLED;
	}

	extend= RNA_boolean_get(op->ptr, "extend");
	uvedit_pixel_to_float(sima, limit, 0.05f);

	if (pick) {
		float co[2];

		if (event) {
			/* invoke */
			ARegion *ar= CTX_wm_region(C);

			UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &co[0], &co[1]);
			RNA_float_set_array(op->ptr, "location", co);
		}
		else {
			/* exec */
			RNA_float_get_array(op->ptr, "location", co);
		}

		uv_find_nearest_vert(scene, ima, em, co, NULL, &hit);
		hit_p= &hit;
	}

	select_linked(scene, ima, em, limit, hit_p, extend);

	DAG_id_tag_update(obedit->data, 0);
	WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);

	return OPERATOR_FINISHED;
}

static int select_linked_exec(bContext *C, wmOperator *op)
{
	return select_linked_internal(C, op, NULL, 0);
}

static void UV_OT_select_linked(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Select Linked";
	ot->description = "Select all UV vertices linked to the active UV map";
	ot->idname = "UV_OT_select_linked";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = select_linked_exec;
	ot->poll = ED_operator_image_active;	/* requires space image */

	/* properties */
	RNA_def_boolean(ot->srna, "extend", 0,
		"Extend", "Extend selection rather than clearing the existing selection");
}

static int select_linked_pick_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
	return select_linked_internal(C, op, event, 1);
}

static int select_linked_pick_exec(bContext *C, wmOperator *op)
{
	return select_linked_internal(C, op, NULL, 1);
}

static void UV_OT_select_linked_pick(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Select Linked Pick";
	ot->description = "Select all UV vertices linked under the mouse";
	ot->idname = "UV_OT_select_linked_pick";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;

	/* api callbacks */
	ot->invoke = select_linked_pick_invoke;
	ot->exec = select_linked_pick_exec;
	ot->poll = ED_operator_image_active;	/* requires space image */;

	/* properties */
	RNA_def_boolean(ot->srna, "extend", 0,
		"Extend", "Extend selection rather than clearing the existing selection");

	RNA_def_float_vector(ot->srna, "location", 2, NULL, -FLT_MAX, FLT_MAX,
		"Location", "Mouse location in normalized coordinates, 0.0 to 1.0 is within the image bounds", -100.0f, 100.0f);
}

/* ******************** unlink selection operator **************** */

static int unlink_selection_exec(bContext *C, wmOperator *op)
{
	Scene *scene = CTX_data_scene(C);
	ToolSettings *ts = CTX_data_tool_settings(C);
	Object *obedit = CTX_data_edit_object(C);
	Image *ima = CTX_data_edit_image(C);
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tf;
	MLoopUV *luv;

	if (ts->uv_flag & UV_SYNC_SELECTION) {
		BKE_report(op->reports, RPT_ERROR, "Can't unlink selection when sync selection is enabled");
		return OPERATOR_CANCELLED;
	}
	
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		int desel = 0;

		tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tf))
			continue;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			
			if (!(luv->flag & MLOOPUV_VERTSEL)) {
				desel = 1;
				break;
			}
		}

		if (desel) {
			BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
				luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
				luv->flag &= ~MLOOPUV_VERTSEL;
			}
		}
	}
	
	DAG_id_tag_update(obedit->data, 0);
	WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);

	return OPERATOR_FINISHED;
}

static void UV_OT_unlink_selected(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Unlink Selection";
	ot->description = "Unlink selected UV vertices from active UV map";
	ot->idname = "UV_OT_unlink_selected";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = unlink_selection_exec;
	ot->poll = ED_operator_uvedit;
}

/* ******************** border select operator **************** */

/* This function sets the selection on tagged faces, need because settings the
 * selection a face is done in a number of places but it also needs to respect
 * the sticky modes for the UV verts, so dealing with the sticky modes is best
 * done in a separate function.
 * 
 * De-selects faces that have been tagged on efa->tmp.l.  */

static void uv_faces_do_sticky(bContext *C, SpaceImage *sima, Scene *scene, Object *obedit, short select)
{
	/* Selecting UV Faces with some modes requires us to change 
	 * the selection in other faces (depending on the sticky mode).
	 * 
	 * This only needs to be done when the Mesh is not used for
	 * selection (so for sticky modes, vertex or location based). */
	
	ToolSettings *ts = CTX_data_tool_settings(C);
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	/* MTexPoly *tf; */
	
	if ((ts->uv_flag & UV_SYNC_SELECTION)==0 && sima->sticky == SI_STICKY_VERTEX) {
		/* Tag all verts as untouched, then touch the ones that have a face center
		 * in the loop and select all MLoopUV's that use a touched vert. */
		BMVert *eve;
		
		BM_ITER(eve, &iter, em->bm, BM_VERTS_OF_MESH, NULL) {
			BM_elem_flag_disable(eve, BM_ELEM_TAG);
		}
		
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			if (BM_elem_flag_test(efa, BM_ELEM_TAG)) {
				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					BM_elem_flag_enable(l->v, BM_ELEM_TAG);
				}
			}
		}

		/* now select tagged verts */
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			/* tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY); */ /* UNUSED */

			BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
				if (BM_elem_flag_test(l->v, BM_ELEM_TAG)) {
					if (select)
						uvedit_uv_select(em, scene, l);
					else
						uvedit_uv_deselect(em, scene, l);
				}
			}
		}
	}
	else if ((ts->uv_flag & UV_SYNC_SELECTION)==0 && sima->sticky == SI_STICKY_LOC) {
		BMFace *efa_vlist;
		/* MTexPoly *tf_vlist; */ /* UNUSED */
		UvMapVert *start_vlist=NULL, *vlist_iter;
		struct UvVertMap *vmap;
		float limit[2];
		unsigned int efa_index;
		//BMVert *eve; /* removed vert counting for now */ 
		//int a;
		
		uvedit_pixel_to_float(sima, limit, 0.05);
		
		EDBM_init_index_arrays(em, 0, 0, 1);
		vmap= EDBM_make_uv_vert_map(em, 0, 0, limit);
		
		/* verts are numbered above in make_uv_vert_map_EM, make sure this stays true! */
		/* BMESH_TODO - why keep this commented? - campbell */
#if 0
		for (a=0, eve= em->verts.first; eve; a++, eve= eve->next)
			eve->tmp.l = a;
#endif
		if (vmap == NULL) {
			return;
		}
		
		efa = BM_iter_new(&iter, em->bm, BM_FACES_OF_MESH, NULL);
		for (efa_index=0; efa; efa=BM_iter_step(&iter), efa_index++) {
			if (BM_elem_flag_test(efa, BM_ELEM_TAG)) {
				/* tf = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY); */ /* UNUSED */
				
				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					if (select)
						uvedit_uv_select(em, scene, l);
					else
						uvedit_uv_deselect(em, scene, l);
					
					vlist_iter= EDBM_get_uv_map_vert(vmap, BM_elem_index_get(l->v));
					
					while (vlist_iter) {
						if (vlist_iter->separate)
							start_vlist = vlist_iter;
						
						if (efa_index == vlist_iter->f)
							break;

						vlist_iter = vlist_iter->next;
					}
				
					vlist_iter = start_vlist;
					while (vlist_iter) {
						
						if (vlist_iter != start_vlist && vlist_iter->separate)
							break;
						
						if (efa_index != vlist_iter->f) {
							efa_vlist = EDBM_get_face_for_index(em, vlist_iter->f);
							/* tf_vlist = CustomData_bmesh_get(&em->bm->pdata, efa_vlist->head.data, CD_MTEXPOLY); */ /* UNUSED */
							
							if (select)
								uvedit_uv_select(em, scene, BM_iter_at_index(em->bm, BM_LOOPS_OF_FACE, efa_vlist, vlist_iter->tfindex));
							else
								uvedit_uv_deselect(em, scene, BM_iter_at_index(em->bm, BM_LOOPS_OF_FACE, efa_vlist, vlist_iter->tfindex));
						}
						vlist_iter = vlist_iter->next;
					}
				}
			}
		}
		EDBM_free_index_arrays(em);
		EDBM_free_uv_vert_map(vmap);
		
	}
	else { /* SI_STICKY_DISABLE or ts->uv_flag & UV_SYNC_SELECTION */
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			if (BM_elem_flag_test(efa, BM_ELEM_TAG)) {
				if (select)
					uvedit_face_select(scene, em, efa);
				else
					uvedit_face_deselect(scene, em, efa);
			}
		}
	}
}

static int border_select_exec(bContext *C, wmOperator *op)
{
	SpaceImage *sima = CTX_wm_space_image(C);
	Scene *scene = CTX_data_scene(C);
	ToolSettings *ts = CTX_data_tool_settings(C);
	Object *obedit = CTX_data_edit_object(C);
	Image *ima = CTX_data_edit_image(C);
	ARegion *ar = CTX_wm_region(C);
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tf;
	MLoopUV *luv;
	rcti rect;
	rctf rectf;
	int change, pinned, select, faces, extend;

	/* get rectangle from operator */
	rect.xmin = RNA_int_get(op->ptr, "xmin");
	rect.ymin = RNA_int_get(op->ptr, "ymin");
	rect.xmax = RNA_int_get(op->ptr, "xmax");
	rect.ymax = RNA_int_get(op->ptr, "ymax");
		
	UI_view2d_region_to_view(&ar->v2d, rect.xmin, rect.ymin, &rectf.xmin, &rectf.ymin);
	UI_view2d_region_to_view(&ar->v2d, rect.xmax, rect.ymax, &rectf.xmax, &rectf.ymax);

	/* figure out what to select/deselect */
	select= (RNA_int_get(op->ptr, "gesture_mode") == GESTURE_MODAL_SELECT);
	pinned= RNA_boolean_get(op->ptr, "pinned");
	extend= RNA_boolean_get(op->ptr, "extend");

	if (!extend)
		select_all_perform(C, SEL_DESELECT);
	
	if (ts->uv_flag & UV_SYNC_SELECTION)
		faces= (ts->selectmode == SCE_SELECT_FACE);
	else
		faces= (ts->uv_selectmode == UV_SELECT_FACE);

	/* do actual selection */
	if (faces && !pinned) {
		/* handle face selection mode */
		float cent[2];

		change= 0;

		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			/* assume not touched */
			BM_elem_flag_disable(efa, BM_ELEM_TAG);

			tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
			if (uvedit_face_visible(scene, ima, efa, tf)) {
				poly_uv_center(em, efa, cent);
				if (BLI_in_rctf(&rectf, cent[0], cent[1])) {
					BM_elem_flag_enable(efa, BM_ELEM_TAG);
					change = 1;
				}
			}
		}

		/* (de)selects all tagged faces and deals with sticky modes */
		if (change)
			uv_faces_do_sticky(C, sima, scene, obedit, select);
	}
	else {
		/* other selection modes */
		change= 1;
		
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			tf= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
			if (!uvedit_face_visible(scene, ima, efa, tf))
				continue;
			BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
				luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);

				if (!pinned || (ts->uv_flag & UV_SYNC_SELECTION) ) {

					/* UV_SYNC_SELECTION - can't do pinned selection */
					if (BLI_in_rctf(&rectf, luv->uv[0], luv->uv[1])) {
						if (select)	uvedit_uv_select(em, scene, l);
						else		uvedit_uv_deselect(em, scene, l);
					}
				}
				else if (pinned) {
					if ((luv->flag & MLOOPUV_PINNED) && 
					    BLI_in_rctf(&rectf, luv->uv[0], luv->uv[1])) {
						if (select)	uvedit_uv_select(em, scene, l);
						else		uvedit_uv_deselect(em, scene, l);
					}
				}
			}
		}
	}

	if (change) {
		/* make sure newly selected vert selection is updated*/
#if 0	/* BM_elem_select_set API handles all of this? */
		if (ts->uv_flag & UV_SYNC_SELECTION) {
			if (ts->selectmode != SCE_SELECT_FACE) {
				if (select)	EDBM_select_flush(em);
				else		EDBM_deselect_flush(em);
			}
		}
#endif

		WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);
		
		return OPERATOR_FINISHED;
	}

	return OPERATOR_CANCELLED;
} 

static void UV_OT_select_border(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Border Select";
	ot->description = "Select UV vertices using border selection";
	ot->idname = "UV_OT_select_border";
	
	/* api callbacks */
	ot->invoke = WM_border_select_invoke;
	ot->exec = border_select_exec;
	ot->modal = WM_border_select_modal;
	ot->poll = ED_operator_image_active;	/* requires space image */;
	ot->cancel = WM_border_select_cancel;
	
	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* properties */
	RNA_def_boolean(ot->srna, "pinned", 0, "Pinned", "Border select pinned UVs only");

	WM_operator_properties_gesture_border(ot, TRUE);
}

/* ******************** circle select operator **************** */

static void select_uv_inside_ellipse(BMEditMesh *em, SpaceImage *UNUSED(sima), Scene *scene, int select,
									 float *offset, float *ell, BMLoop *l, MLoopUV *luv)
{
	/* normalized ellipse: ell[0] = scaleX, ell[1] = scaleY */
	float x, y, r2, *uv;
	
	
	uv= luv->uv;

	x= (uv[0] - offset[0])*ell[0];
	y= (uv[1] - offset[1])*ell[1];

	r2 = x*x + y*y;
	if (r2 < 1.0f) {
		if (select) uvedit_uv_select(em, scene, l);
		else uvedit_uv_deselect(em, scene, l);
	}
}

static int circle_select_exec(bContext *C, wmOperator *op)
{
	SpaceImage *sima = CTX_wm_space_image(C);
	Scene *scene = CTX_data_scene(C);
	Object *obedit = CTX_data_edit_object(C);
	BMEditMesh *em = BMEdit_FromObject(obedit);
	ARegion *ar = CTX_wm_region(C);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MLoopUV *luv;
	int x, y, radius, width, height, select;
	float zoomx, zoomy, offset[2], ellipse[2];
	int gesture_mode= RNA_int_get(op->ptr, "gesture_mode");

	/* get operator properties */
	select= (gesture_mode == GESTURE_MODAL_SELECT);
	x= RNA_int_get(op->ptr, "x");
	y= RNA_int_get(op->ptr, "y");
	radius= RNA_int_get(op->ptr, "radius");

	/* compute ellipse size and location, not a circle since we deal
	 * with non square image. ellipse is normalized, r = 1.0. */
	ED_space_image_size(sima, &width, &height);
	ED_space_image_zoom(sima, ar, &zoomx, &zoomy);

	ellipse[0]= width*zoomx/radius;
	ellipse[1]= height*zoomy/radius;

	UI_view2d_region_to_view(&ar->v2d, x, y, &offset[0], &offset[1]);
	
	/* do selection */
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			select_uv_inside_ellipse(em, sima, scene, select, offset, ellipse, l, luv);
		}
	}

#if 0 //I think the BM_elem_select_set api stuff handles all this as necessary?
	if (select) EM_select_flush(em);
	else EM_deselect_flush(em);
#endif
	WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);

	return OPERATOR_FINISHED;
}

static void UV_OT_circle_select(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Circle Select";
	ot->description = "Select UV vertices using circle selection";
	ot->idname = "UV_OT_circle_select";
	
	/* api callbacks */
	ot->invoke = WM_gesture_circle_invoke;
	ot->modal = WM_gesture_circle_modal;
	ot->exec = circle_select_exec;
	ot->poll = ED_operator_image_active;	/* requires space image */;
	ot->cancel = WM_gesture_circle_cancel;
	
	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* properties */
	RNA_def_int(ot->srna, "x", 0, INT_MIN, INT_MAX, "X", "", INT_MIN, INT_MAX);
	RNA_def_int(ot->srna, "y", 0, INT_MIN, INT_MAX, "Y", "", INT_MIN, INT_MAX);
	RNA_def_int(ot->srna, "radius", 0, INT_MIN, INT_MAX, "Radius", "", INT_MIN, INT_MAX);
	RNA_def_int(ot->srna, "gesture_mode", 0, INT_MIN, INT_MAX, "Gesture Mode", "", INT_MIN, INT_MAX);
}

/* ******************** snap cursor operator **************** */

static void snap_uv_to_pixel(float *uvco, float w, float h)
{
	uvco[0] = ((float)((int)((uvco[0]*w) + 0.5f)))/w;
	uvco[1] = ((float)((int)((uvco[1]*h) + 0.5f)))/h;
}

static void snap_cursor_to_pixels(SpaceImage *sima)
{
	int width= 0, height= 0;

	ED_space_image_size(sima, &width, &height);
	snap_uv_to_pixel(sima->cursor, width, height);
}

static int snap_cursor_to_selection(Scene *scene, Image *ima, Object *obedit, SpaceImage *sima)
{
	return uvedit_center(scene, ima, obedit, sima->cursor, sima->around);
}

static int snap_cursor_exec(bContext *C, wmOperator *op)
{
	SpaceImage *sima= CTX_wm_space_image(C);
	Scene *scene= CTX_data_scene(C);
	Object *obedit= CTX_data_edit_object(C);
	Image *ima= CTX_data_edit_image(C);
	int change= 0;

	switch(RNA_enum_get(op->ptr, "target")) {
		case 0:
			snap_cursor_to_pixels(sima);
			change= 1;
			break;
		case 1:
			change= snap_cursor_to_selection(scene, ima, obedit, sima);
			break;
	}

	if (!change)
		return OPERATOR_CANCELLED;
	
	WM_event_add_notifier(C, NC_SPACE|ND_SPACE_IMAGE, sima);

	return OPERATOR_FINISHED;
}

static void UV_OT_snap_cursor(wmOperatorType *ot)
{
	static EnumPropertyItem target_items[] = {
		{0, "PIXELS", 0, "Pixels", ""},
		{1, "SELECTED", 0, "Selected", ""},
		{0, NULL, 0, NULL, NULL}};

	/* identifiers */
	ot->name = "Snap Cursor";
	ot->description = "Snap cursor to target type";
	ot->idname = "UV_OT_snap_cursor";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = snap_cursor_exec;
	ot->poll = ED_operator_image_active;	/* requires space image */;

	/* properties */
	RNA_def_enum(ot->srna, "target", target_items, 0, "Target", "Target to snap the selected UVs to");
}

/* ******************** snap selection operator **************** */

static int snap_uvs_to_cursor(Scene *scene, Image *ima, Object *obedit, SpaceImage *sima)
{
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tface;
	MLoopUV *luv;
	short change= 0;

	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tface= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tface))
			continue;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			if (uvedit_uv_selected(em, scene, l)) {
				luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
				copy_v2_v2(luv->uv, sima->cursor);
				change= 1;
			}
		}
	}

	return change;
}

static int snap_uvs_to_adjacent_unselected(Scene *scene, Image *ima, Object *obedit)
{
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	BMVert *eve;
	MTexPoly *tface;
	MLoopUV *luv;
	short change = 0;
	int count = 0;
	float *coords;
	short *usercount, users;

	/* BMESH_TODO - stop setting the index, bad juju
	 * not totally simple because 3 states and because the count is not
	 * based on the global vertex index :S - campbell */

	/* set all verts to -1 : an unused index*/
	BM_ITER(eve, &iter, em->bm, BM_VERTS_OF_MESH, NULL)
		BM_elem_index_set(eve, -1); /* set_dirty! */
	em->bm->elem_index_dirty |= BM_VERT;
	
	/* index every vert that has a selected UV using it, but only once so as to
	 * get unique indices and to count how much to malloc */
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tface= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tface)) {
			BM_elem_flag_disable(efa, BM_ELEM_TAG);
			continue;
		}
		else {
			BM_elem_flag_enable(efa, BM_ELEM_TAG);
		}

		change = 1;
		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			if (uvedit_uv_selected(em, scene, l) && BM_elem_index_get(l->v) == -1) {
				BM_elem_index_set(l->v, count); /* set_dirty! */
				count++;
			}
		}
	}
	em->bm->elem_index_dirty |= BM_VERT; /* set above but include for completeness since they are made dirty again */
	
	coords = MEM_callocN(sizeof(float)*count*2, "snap to adjacent coords");
	usercount = MEM_callocN(sizeof(short)*count, "snap to adjacent counts");
	
	/* add all UV coords from visible, unselected UV coords as well as counting them to average later */
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		if (!BM_elem_flag_test(efa, BM_ELEM_TAG))
			continue;

		tface= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tface))
			continue;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			if (BM_elem_index_get(l->v) >= 0 && 
			    (!uvedit_uv_selected(em, scene, l))) {
				    luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
					add_v2_v2(&coords[BM_elem_index_get(l->v) * 2], luv->uv);
				    change = 1;
			}
		}
	}
	
	/* no other verts selected, bail out */
	if (!change) {
		MEM_freeN(coords);
		MEM_freeN(usercount);
		return change;
	}
	
	/* copy the averaged unselected UVs back to the selected UVs */
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		if (!BM_elem_flag_test(efa, BM_ELEM_TAG))
			continue;

		tface= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tface))
			continue;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			if (uvedit_uv_selected(em, scene, l) && BM_elem_index_get(l->v) >= 0
			    && (users = usercount[BM_elem_index_get(l->v)])) {
				luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
				copy_v2_v2(luv->uv, &coords[BM_elem_index_get(l->v) * 2]);
			}
		}
	}
	
	MEM_freeN(coords);
	MEM_freeN(usercount);

	return change;
}

static int snap_uvs_to_pixels(SpaceImage *sima, Scene *scene, Object *obedit)
{
	BMEditMesh *em = BMEdit_FromObject(obedit);
	Image *ima = sima->image;
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tface;
	MLoopUV *luv;
	int width = 0, height = 0;
	float w, h;
	short change = 0;

	ED_space_image_size(sima, &width, &height);
	w = (float)width;
	h = (float)height;
	
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tface= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tface))
			continue;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			if (uvedit_uv_selected(em, scene, l)) {
				luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
				snap_uv_to_pixel(luv->uv, w, h);
			}
		}

		change = 1;
	}

	return change;
}

static int snap_selection_exec(bContext *C, wmOperator *op)
{
	SpaceImage *sima= CTX_wm_space_image(C);
	Scene *scene= CTX_data_scene(C);
	Object *obedit= CTX_data_edit_object(C);
	Image *ima= CTX_data_edit_image(C);
	int change= 0;

	switch(RNA_enum_get(op->ptr, "target")) {
		case 0:
			change= snap_uvs_to_pixels(sima, scene, obedit);
			break;
		case 1:
			change= snap_uvs_to_cursor(scene, ima, obedit, sima);
			break;
		case 2:
			change= snap_uvs_to_adjacent_unselected(scene, ima, obedit);
			break;
	}

	if (!change)
		return OPERATOR_CANCELLED;

	uvedit_live_unwrap_update(sima, scene, obedit);
	DAG_id_tag_update(obedit->data, 0);
	WM_event_add_notifier(C, NC_GEOM|ND_DATA, obedit->data);

	return OPERATOR_FINISHED;
}

static void UV_OT_snap_selected(wmOperatorType *ot)
{
	static EnumPropertyItem target_items[] = {
		{0, "PIXELS", 0, "Pixels", ""},
		{1, "CURSOR", 0, "Cursor", ""},
		{2, "ADJACENT_UNSELECTED", 0, "Adjacent Unselected", ""},
		{0, NULL, 0, NULL, NULL}};

	/* identifiers */
	ot->name = "Snap Selection";
	ot->description = "Snap selected UV vertices to target type";
	ot->idname = "UV_OT_snap_selected";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = snap_selection_exec;
	ot->poll = ED_operator_image_active;	/* requires space image */;

	/* properties */
	RNA_def_enum(ot->srna, "target", target_items, 0, "Target", "Target to snap the selected UVs to");
}

/* ******************** pin operator **************** */

static int pin_exec(bContext *C, wmOperator *op)
{
	Scene *scene = CTX_data_scene(C);
	Object *obedit = CTX_data_edit_object(C);
	Image *ima = CTX_data_edit_image(C);
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tface;
	MLoopUV *luv;
	int clear = RNA_boolean_get(op->ptr, "clear");
	
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tface= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tface))
			continue;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			
			if (!clear) {
				if (uvedit_uv_selected(em, scene, l))
					luv->flag |= MLOOPUV_PINNED;
			}
			else {
				if (uvedit_uv_selected(em, scene, l))
					luv->flag &= ~MLOOPUV_PINNED;
			}
		}
	}
	
	WM_event_add_notifier(C, NC_GEOM|ND_DATA, obedit->data);

	return OPERATOR_FINISHED;
}

static void UV_OT_pin(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Pin";
	ot->description = "Set/clear selected UV vertices as anchored between multiple unwrap operations";
	ot->idname = "UV_OT_pin";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = pin_exec;
	ot->poll = ED_operator_uvedit;

	/* properties */
	RNA_def_boolean(ot->srna, "clear", 0, "Clear", "Clear pinning for the selection instead of setting it");
}

/******************* select pinned operator ***************/

static int select_pinned_exec(bContext *C, wmOperator *UNUSED(op))
{
	Scene *scene = CTX_data_scene(C);
	Object *obedit = CTX_data_edit_object(C);
	Image *ima = CTX_data_edit_image(C);
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MTexPoly *tface;
	MLoopUV *luv;
	
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		tface= CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
		if (!uvedit_face_visible(scene, ima, efa, tface))
			continue;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
			
			if (luv->flag & MLOOPUV_PINNED)
				uvedit_uv_select(em, scene, l);
		}
	}
	
	WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);

	return OPERATOR_FINISHED;
}

static void UV_OT_select_pinned(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Selected Pinned";
	ot->description = "Select all pinned UV vertices";
	ot->idname = "UV_OT_select_pinned";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = select_pinned_exec;
	ot->poll = ED_operator_uvedit;
}

/********************** hide operator *********************/

static int hide_exec(bContext *C, wmOperator *op)
{
	SpaceImage *sima = CTX_wm_space_image(C);
	ToolSettings *ts = CTX_data_tool_settings(C);
	Object *obedit = CTX_data_edit_object(C);
	Scene *scene = CTX_data_scene(C);
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MLoopUV *luv;
	int swap = RNA_boolean_get(op->ptr, "unselected");
	int facemode= sima ? sima->flag & SI_SELACTFACE : 0;

	if (ts->uv_flag & UV_SYNC_SELECTION) {
		EDBM_hide_mesh(em, swap);
		WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);

		return OPERATOR_FINISHED;
	}
	
	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		int hide = 0;

		BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
			luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);

			if (luv->flag & MLOOPUV_VERTSEL) {
				hide = 1;
				break;
			}
		}

		if (swap)
			hide = !hide;
		
		if (hide) {
			if (facemode) {
				/*check that every UV is selected*/
				luv = NULL;
				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
					if (!(luv->flag & MLOOPUV_VERTSEL))
						break;
				}
				
				if (!luv) {
					BM_elem_select_set(em->bm, efa, FALSE);
					uvedit_face_deselect(scene, em, efa);
				}
			}
			else if (em->selectmode == SCE_SELECT_FACE) {
				/*check if a UV is selected*/
				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
					if (luv->flag & MLOOPUV_VERTSEL) {
						BM_elem_select_set(em->bm, efa, FALSE);
					}
					luv->flag &= ~MLOOPUV_VERTSEL;
				}
			}
			else {
				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
					if (luv->flag & MLOOPUV_VERTSEL) {
						BM_elem_select_set(em->bm, l->v, FALSE);
						luv->flag &= ~MLOOPUV_VERTSEL;
					}
				}
			}
		}
	}
	
	
	EDBM_validate_selections(em);
	WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);

	return OPERATOR_FINISHED;
}

static void UV_OT_hide(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Hide Selected";
	ot->description = "Hide (un)selected UV vertices";
	ot->idname = "UV_OT_hide";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = hide_exec;
	ot->poll = ED_operator_uvedit;

	/* props */
	RNA_def_boolean(ot->srna, "unselected", 0, "Unselected", "Hide unselected rather than selected");
}

/****************** reveal operator ******************/

static int reveal_exec(bContext *C, wmOperator *UNUSED(op))
{
	SpaceImage *sima= CTX_wm_space_image(C);
	ToolSettings *ts= CTX_data_tool_settings(C);
	Object *obedit= CTX_data_edit_object(C);
	/*Scene *scene = CTX_data_scene(C);*/ /*UNUSED*/
	BMEditMesh *em = BMEdit_FromObject(obedit);
	BMFace *efa;
	BMLoop *l;
	BMIter iter, liter;
	MLoopUV *luv;
	int facemode= sima ? sima->flag & SI_SELACTFACE : 0;
	int stickymode= sima ? (sima->sticky != SI_STICKY_DISABLE) : 1;

	/* call the mesh function if we are in mesh sync sel */
	if (ts->uv_flag & UV_SYNC_SELECTION) {
		EDBM_reveal_mesh(em);
		WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);

		return OPERATOR_FINISHED;
	}
	if (facemode) {
		if (em->selectmode == SCE_SELECT_FACE) {
			BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
				if (!BM_elem_flag_test(efa, BM_ELEM_HIDDEN) && !BM_elem_flag_test(efa, BM_ELEM_SELECT)) {
					BM_elem_select_set(em->bm, efa, TRUE);
					BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
						luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
						luv->flag |= MLOOPUV_VERTSEL;
					}
				}
			}
		}
		else {
			/* enable adjacent faces to have disconnected UV selections if sticky is disabled */
			if (!stickymode) {
				BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
					if (!BM_elem_flag_test(efa, BM_ELEM_HIDDEN) && !BM_elem_flag_test(efa, BM_ELEM_SELECT)) {
						int totsel=0;
						BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
							totsel += BM_elem_flag_test(l->v, BM_ELEM_SELECT);
						}
						
						if (!totsel) {
							BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
								luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
								luv->flag |= MLOOPUV_VERTSEL;
							}
							
							BM_elem_select_set(em->bm, efa, TRUE);
						}
					}
				}
			}
			else {
				BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
					if (!BM_elem_flag_test(efa, BM_ELEM_HIDDEN) && !BM_elem_flag_test(efa, BM_ELEM_SELECT)) {
						BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
							if (BM_elem_flag_test(l->v, BM_ELEM_SELECT)==0) {
								luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
								luv->flag |= MLOOPUV_VERTSEL;
							}
						}
						
						BM_elem_select_set(em->bm, efa, TRUE);
					}
				}
			}
		}
	}
	else if (em->selectmode == SCE_SELECT_FACE) {
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			if (!BM_elem_flag_test(efa, BM_ELEM_HIDDEN) && !BM_elem_flag_test(efa, BM_ELEM_SELECT)) {
				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
					luv->flag |= MLOOPUV_VERTSEL;
				}
				
				BM_elem_select_set(em->bm, efa, TRUE);
			}
		}
	}
	else {
		BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
			if (!BM_elem_flag_test(efa, BM_ELEM_HIDDEN) && !BM_elem_flag_test(efa, BM_ELEM_SELECT)) {
				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_FACE, efa) {
					if (BM_elem_flag_test(l->v, BM_ELEM_SELECT)==0) {
						luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
						luv->flag |= MLOOPUV_VERTSEL;
					}
				}
				
				BM_elem_select_set(em->bm, efa, TRUE);
			}
		}
	}
	
	WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);

	return OPERATOR_FINISHED;
}

static void UV_OT_reveal(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Reveal Hidden";
	ot->description = "Reveal all hidden UV vertices";
	ot->idname = "UV_OT_reveal";
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* api callbacks */
	ot->exec = reveal_exec;
	ot->poll = ED_operator_uvedit;
}

/******************** set 3d cursor operator ********************/

static int set_2d_cursor_exec(bContext *C, wmOperator *op)
{
	SpaceImage *sima = CTX_wm_space_image(C);
	float location[2];

	if (!sima)
		return OPERATOR_CANCELLED;

	RNA_float_get_array(op->ptr, "location", location);
	sima->cursor[0]= location[0];
	sima->cursor[1]= location[1];
	
	WM_event_add_notifier(C, NC_SPACE|ND_SPACE_IMAGE, NULL);
	
	return OPERATOR_FINISHED;
}

static int set_2d_cursor_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
	ARegion *ar= CTX_wm_region(C);
	float location[2];

	UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &location[0], &location[1]);
	RNA_float_set_array(op->ptr, "location", location);

	return set_2d_cursor_exec(C, op);
}

static void UV_OT_cursor_set(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Set 2D Cursor";
	ot->description = "Set 2D cursor location";
	ot->idname = "UV_OT_cursor_set";
	
	/* api callbacks */
	ot->exec = set_2d_cursor_exec;
	ot->invoke = set_2d_cursor_invoke;
	ot->poll = ED_operator_image_active;	/* requires space image */;

	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;

	/* properties */
	RNA_def_float_vector(ot->srna, "location", 2, NULL, -FLT_MAX, FLT_MAX, "Location", "Cursor location in normalised (0.0-1.0) coordinates", -10.0f, 10.0f);
}

/********************** set tile operator **********************/

static int set_tile_exec(bContext *C, wmOperator *op)
{
	Image *ima= CTX_data_edit_image(C);
	int tile[2];
	Object *obedit= CTX_data_edit_object(C);

	RNA_int_get_array(op->ptr, "tile", tile);

	if (uvedit_set_tile(obedit, ima, tile[0] + ima->xrep*tile[1])) {
		WM_event_add_notifier(C, NC_GEOM|ND_DATA, obedit->data);
		WM_event_add_notifier(C, NC_SPACE|ND_SPACE_IMAGE, NULL);

		return OPERATOR_FINISHED;
	}
	
	return OPERATOR_CANCELLED;
}

static int set_tile_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
	SpaceImage *sima= CTX_wm_space_image(C);
	Image *ima= CTX_data_edit_image(C);
	ARegion *ar= CTX_wm_region(C);
	float fx, fy;
	int tile[2];

	if (!ima || !(ima->tpageflag & IMA_TILES))
		return OPERATOR_CANCELLED;

	UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &fx, &fy);

	if (fx >= 0.0f && fy >= 0.0f && fx < 1.0f && fy < 1.0f) {
		fx= fx*ima->xrep;
		fy= fy*ima->yrep;
		
		tile[0]= fx;
		tile[1]= fy;
		
		sima->curtile= tile[1]*ima->xrep + tile[0];
		RNA_int_set_array(op->ptr, "tile", tile);
	}

	return set_tile_exec(C, op);
}

static void UV_OT_tile_set(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Set Tile";
	ot->description = "Set UV image tile coordinates";
	ot->idname = "UV_OT_tile_set";
	
	/* api callbacks */
	ot->exec = set_tile_exec;
	ot->invoke = set_tile_invoke;
	ot->poll = ED_operator_image_active;	/* requires space image */;

	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;

	/* properties */
	RNA_def_int_vector(ot->srna, "tile", 2, NULL, 0, INT_MAX, "Tile", "Tile coordinate", 0, 10);
}


static int seams_from_islands_exec(bContext *C, wmOperator *op)
{
	UvVertMap *vmap;
	Object *ob = CTX_data_edit_object(C);
	Mesh *me= (Mesh*)ob->data;
	BMEditMesh *em;
	BMEdge *editedge;
	float limit[2] = {STD_UV_CONNECT_LIMIT, STD_UV_CONNECT_LIMIT};
	char mark_seams = RNA_boolean_get(op->ptr, "mark_seams");
	char mark_sharp = RNA_boolean_get(op->ptr, "mark_sharp");

	BMesh *bm;
	BMIter iter;

	em = me->edit_btmesh;
	bm = em->bm;

	if (!EDBM_texFaceCheck(em)) {
		return OPERATOR_CANCELLED;
	}

	/* This code sets editvert->tmp.l to the index. This will be useful later on. */
	EDBM_init_index_arrays(em, 0, 0, 1);
	vmap = EDBM_make_uv_vert_map(em, 0, 0, limit);

	BM_ITER(editedge, &iter, bm, BM_EDGES_OF_MESH, NULL) {
		/* flags to determine if we uv is separated from first editface match */
		char separated1 = 0, separated2;
		/* set to denote edge must be flagged as seam */
		char faces_separated = 0;
		/* flag to keep track if uv1 is disconnected from first editface match */
		char v1coincident = 1;
		/* For use with v1coincident. v1coincident will change only if we've had commonFaces */
		int commonFaces = 0;

		BMFace *efa1, *efa2;

		UvMapVert *mv1, *mvinit1, *mv2, *mvinit2, *mviter;
		/* mv2cache stores the first of the list of coincident uv's for later comparison
		 * mv2sep holds the last separator and is copied to mv2cache when a hit is first found */
		UvMapVert *mv2cache = NULL, *mv2sep = NULL;

		mvinit1 = vmap->vert[BM_elem_index_get(editedge->v1)];
		if (mark_seams)
			BM_elem_flag_disable(editedge, BM_ELEM_SEAM);

		for (mv1 = mvinit1; mv1 && !faces_separated; mv1 = mv1->next) {
			if (mv1->separate && commonFaces)
				v1coincident = 0;

			separated2 = 0;
			efa1 = EDBM_get_face_for_index(em, mv1->f);
			mvinit2 = vmap->vert[BM_elem_index_get(editedge->v2)];

			for (mv2 = mvinit2; mv2; mv2 = mv2->next) {
				if (mv2->separate)
					mv2sep = mv2;

				efa2 = EDBM_get_face_for_index(em, mv2->f);
				if (efa1 == efa2) {
					/* if v1 is not coincident no point in comparing */
					if (v1coincident) {
						/* have we found previously anything? */
						if (mv2cache) {
							/* flag seam unless proved to be coincident with previous hit */
							separated2 = 1;
							for (mviter = mv2cache; mviter; mviter = mviter->next) {
								if (mviter->separate && mviter != mv2cache)
									break;
								/* coincident with previous hit, do not flag seam */
								if (mviter == mv2)
									separated2 = 0;
							}
						}
						/* First hit case, store the hit in the cache */
						else {
							mv2cache = mv2sep;
							commonFaces = 1;
						}
					}
					else
						separated1 = 1;

					if (separated1 || separated2) {
						faces_separated = 1;
						break;
					}
				}
			}
		}

		if (faces_separated) {
			if (mark_seams)
				BM_elem_flag_enable(editedge, BM_ELEM_SEAM);
			if (mark_sharp)
				BM_elem_flag_disable(editedge, BM_ELEM_SMOOTH);
		}
	}

	me->drawflag |= ME_DRAWSEAMS;

	EDBM_free_uv_vert_map(vmap);
	EDBM_free_index_arrays(em);

	DAG_id_tag_update(&me->id, 0);
	WM_event_add_notifier(C, NC_GEOM|ND_DATA, me);

	return OPERATOR_FINISHED;
}


static void UV_OT_seams_from_islands(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Seams From Islands";
	ot->description = "Set mesh seams according to island setup in the UV editor";
	ot->idname = "UV_OT_seams_from_islands";

	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;

	/* api callbacks */
	ot->exec = seams_from_islands_exec;
	ot->poll = ED_operator_uvedit;

	RNA_def_boolean(ot->srna, "mark_seams", 1, "Mark Seams", "Mark boundary edges as seams");
	RNA_def_boolean(ot->srna, "mark_sharp", 0, "Mark Sharp", "Mark boundary edges as sharp");
}

static int mark_seam_exec(bContext *C, wmOperator *UNUSED(op))
{
	Object *ob = CTX_data_edit_object(C);
	Scene *scene = CTX_data_scene(C);
	Mesh *me= (Mesh*)ob->data;
	BMEditMesh *em= me->edit_btmesh;
	BMesh *bm = em->bm;
	BMFace *efa;
	BMLoop *loop;

	BMIter iter, liter;

	BM_ITER(efa, &iter, em->bm, BM_FACES_OF_MESH, NULL) {
		BM_ITER(loop, &liter, bm, BM_LOOPS_OF_FACE, efa) {
			if (uvedit_edge_selected(em, scene, loop)) {
				BM_elem_flag_enable(loop, BM_ELEM_SEAM);
			}
		}
	}

	me->drawflag |= ME_DRAWSEAMS;

	if (scene->toolsettings->edge_mode_live_unwrap)
		ED_unwrap_lscm(scene, ob, FALSE);

	DAG_id_tag_update(&me->id, 0);
	WM_event_add_notifier(C, NC_GEOM|ND_DATA, me);

	return OPERATOR_FINISHED;
}

static void UV_OT_mark_seam(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Mark Seams";
	ot->description = "Mark selected UV edges as seams";
	ot->idname = "UV_OT_mark_seam";

	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;

	/* api callbacks */
	ot->exec = mark_seam_exec;
	ot->poll = ED_operator_uvedit;
}


/* ************************** registration **********************************/

void ED_operatortypes_uvedit(void)
{
	WM_operatortype_append(UV_OT_select_all);
	WM_operatortype_append(UV_OT_select);
	WM_operatortype_append(UV_OT_select_loop);
	WM_operatortype_append(UV_OT_select_linked);
	WM_operatortype_append(UV_OT_select_linked_pick);
	WM_operatortype_append(UV_OT_unlink_selected);
	WM_operatortype_append(UV_OT_select_pinned);
	WM_operatortype_append(UV_OT_select_border);
	WM_operatortype_append(UV_OT_circle_select);

	WM_operatortype_append(UV_OT_snap_cursor);
	WM_operatortype_append(UV_OT_snap_selected);

	WM_operatortype_append(UV_OT_align);

	WM_operatortype_append(UV_OT_stitch);

	WM_operatortype_append(UV_OT_seams_from_islands);
	WM_operatortype_append(UV_OT_mark_seam);
	WM_operatortype_append(UV_OT_weld);
	WM_operatortype_append(UV_OT_pin);

	WM_operatortype_append(UV_OT_average_islands_scale);
	WM_operatortype_append(UV_OT_cube_project);
	WM_operatortype_append(UV_OT_cylinder_project);
	WM_operatortype_append(UV_OT_from_view);
	WM_operatortype_append(UV_OT_minimize_stretch);
	WM_operatortype_append(UV_OT_pack_islands);
	WM_operatortype_append(UV_OT_reset);
	WM_operatortype_append(UV_OT_sphere_project);
	WM_operatortype_append(UV_OT_unwrap);

	WM_operatortype_append(UV_OT_reveal);
	WM_operatortype_append(UV_OT_hide);

	WM_operatortype_append(UV_OT_cursor_set);
	WM_operatortype_append(UV_OT_tile_set);
}

void ED_keymap_uvedit(wmKeyConfig *keyconf)
{
	wmKeyMap *keymap;
	wmKeyMapItem *kmi;
	
	keymap = WM_keymap_find(keyconf, "UV Editor", 0, 0);
	keymap->poll = ED_operator_uvedit_can_uv_sculpt;

	/* Uv sculpt toggle */
	kmi = WM_keymap_add_item(keymap, "WM_OT_context_toggle", QKEY, KM_PRESS, 0, 0);
	RNA_string_set(kmi->ptr, "data_path", "tool_settings.use_uv_sculpt");

	/* Mark edge seam */
	WM_keymap_add_item(keymap, "UV_OT_mark_seam", EKEY, KM_PRESS, KM_CTRL, 0);
	
	/* pick selection */
	RNA_boolean_set(WM_keymap_add_item(keymap, "UV_OT_select", SELECTMOUSE, KM_PRESS, 0, 0)->ptr, "extend", FALSE);
	RNA_boolean_set(WM_keymap_add_item(keymap, "UV_OT_select", SELECTMOUSE, KM_PRESS, KM_SHIFT, 0)->ptr, "extend", TRUE);
	RNA_boolean_set(WM_keymap_add_item(keymap, "UV_OT_select_loop", SELECTMOUSE, KM_PRESS, KM_ALT, 0)->ptr, "extend", FALSE);
	RNA_boolean_set(WM_keymap_add_item(keymap, "UV_OT_select_loop", SELECTMOUSE, KM_PRESS, KM_SHIFT|KM_ALT, 0)->ptr, "extend", TRUE);

	/* border/circle selection */
	kmi = WM_keymap_add_item(keymap, "UV_OT_select_border", BKEY, KM_PRESS, 0, 0);
	RNA_boolean_set(kmi->ptr, "pinned", FALSE);
	kmi = WM_keymap_add_item(keymap, "UV_OT_select_border", BKEY, KM_PRESS, KM_SHIFT, 0);
	RNA_boolean_set(kmi->ptr, "pinned", TRUE);

	WM_keymap_add_item(keymap, "UV_OT_circle_select", CKEY, KM_PRESS, 0, 0);

	/* selection manipulation */
	RNA_boolean_set(WM_keymap_add_item(keymap, "UV_OT_select_linked", LKEY, KM_PRESS, KM_CTRL, 0)->ptr, "extend", FALSE);
	RNA_boolean_set(WM_keymap_add_item(keymap, "UV_OT_select_linked_pick", LKEY, KM_PRESS, 0, 0)->ptr, "extend", FALSE);
	RNA_boolean_set(WM_keymap_add_item(keymap, "UV_OT_select_linked", LKEY, KM_PRESS, KM_CTRL|KM_SHIFT, 0)->ptr, "extend", TRUE);
	RNA_boolean_set(WM_keymap_add_item(keymap, "UV_OT_select_linked_pick", LKEY, KM_PRESS, KM_SHIFT, 0)->ptr, "extend", TRUE);

	WM_keymap_add_item(keymap, "UV_OT_unlink_selected", LKEY, KM_PRESS, KM_ALT, 0);
	kmi = WM_keymap_add_item(keymap, "UV_OT_select_all", AKEY, KM_PRESS, 0, 0);
	RNA_enum_set(kmi->ptr, "action", SEL_TOGGLE);
	kmi = WM_keymap_add_item(keymap, "UV_OT_select_all", IKEY, KM_PRESS, KM_CTRL, 0);
	RNA_enum_set(kmi->ptr, "action", SEL_INVERT);

	WM_keymap_add_item(keymap, "UV_OT_select_pinned", PKEY, KM_PRESS, KM_SHIFT, 0);

	WM_keymap_add_menu(keymap, "IMAGE_MT_uvs_weldalign", WKEY, KM_PRESS, 0, 0);

	/* uv operations */
	WM_keymap_add_item(keymap, "UV_OT_stitch", VKEY, KM_PRESS, 0, 0);
	kmi = WM_keymap_add_item(keymap, "UV_OT_pin", PKEY, KM_PRESS, 0, 0);
	RNA_boolean_set(kmi->ptr, "clear", FALSE);
	kmi = WM_keymap_add_item(keymap, "UV_OT_pin", PKEY, KM_PRESS, KM_ALT, 0);
	RNA_boolean_set(kmi->ptr, "clear", TRUE);

	/* unwrap */
	WM_keymap_add_item(keymap, "UV_OT_unwrap", EKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "UV_OT_minimize_stretch", VKEY, KM_PRESS, KM_CTRL, 0);
	WM_keymap_add_item(keymap, "UV_OT_pack_islands", PKEY, KM_PRESS, KM_CTRL, 0);
	WM_keymap_add_item(keymap, "UV_OT_average_islands_scale", AKEY, KM_PRESS, KM_CTRL, 0);

	/* hide */
	kmi = WM_keymap_add_item(keymap, "UV_OT_hide", HKEY, KM_PRESS, 0, 0);
	RNA_boolean_set(kmi->ptr, "unselected", FALSE);
	kmi = WM_keymap_add_item(keymap, "UV_OT_hide", HKEY, KM_PRESS, KM_SHIFT, 0);
	RNA_boolean_set(kmi->ptr, "unselected", TRUE);

	WM_keymap_add_item(keymap, "UV_OT_reveal", HKEY, KM_PRESS, KM_ALT, 0);

	/* cursor */
	WM_keymap_add_item(keymap, "UV_OT_cursor_set", ACTIONMOUSE, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "UV_OT_tile_set", ACTIONMOUSE, KM_PRESS, KM_SHIFT, 0);
	
	/* menus */
	WM_keymap_add_menu(keymap, "IMAGE_MT_uvs_snap", SKEY, KM_PRESS, KM_SHIFT, 0);
	WM_keymap_add_menu(keymap, "IMAGE_MT_uvs_select_mode", TABKEY, KM_PRESS, KM_CTRL, 0);

	/* pivot */
	kmi = WM_keymap_add_item(keymap, "WM_OT_context_set_enum", COMMAKEY, KM_PRESS, 0, 0);
	RNA_string_set(kmi->ptr, "data_path", "space_data.uv_editor.pivot_point");
	RNA_string_set(kmi->ptr, "value", "CENTER");

	kmi = WM_keymap_add_item(keymap, "WM_OT_context_set_enum", COMMAKEY, KM_PRESS, KM_CTRL, 0);
	RNA_string_set(kmi->ptr, "data_path", "space_data.uv_editor.pivot_point");
	RNA_string_set(kmi->ptr, "value", "MEDIAN");

	kmi = WM_keymap_add_item(keymap, "WM_OT_context_set_enum", PERIODKEY, KM_PRESS, 0, 0);
	RNA_string_set(kmi->ptr, "data_path", "space_data.uv_editor.pivot_point");
	RNA_string_set(kmi->ptr, "value", "CURSOR");

	ED_object_generic_keymap(keyconf, keymap, 2);

	transform_keymap_for_space(keyconf, keymap, SPACE_IMAGE);
}