/**
 * $Id$
 *
 * ***** BEGIN GPL/BL DUAL 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. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, 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): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 */

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

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#ifndef WIN32
#include <unistd.h>
#else
#include <io.h>
#endif   
#include "MEM_guardedalloc.h"

#include "BLI_blenlib.h"
#include "BLI_arithb.h"

#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"

#include "DNA_image_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_node_types.h"
#include "DNA_object_types.h" // only for uvedit_selectionCB() (struct Object)
#include "DNA_packedFile_types.h"
#include "DNA_scene_types.h"
#include "DNA_space_types.h"
#include "DNA_screen_types.h"
#include "DNA_texture_types.h"
#include "DNA_userdef_types.h"
#include "DNA_view3d_types.h"

#include "BKE_colortools.h"
#include "BKE_depsgraph.h"
#include "BKE_displist.h"
#include "BKE_image.h"
#include "BKE_global.h"
#include "BKE_library.h"
#include "BKE_main.h"
#include "BKE_mesh.h"
#include "BKE_node.h"
#include "BKE_object.h"
#include "BKE_packedFile.h"
#include "BKE_utildefines.h"

#include "BIF_gl.h"
#include "BIF_glutil.h"
#include "BIF_interface.h"
#include "BIF_drawimage.h"
#include "BIF_editview.h"
#include "BIF_editsima.h"
#include "BIF_mywindow.h"
#include "BIF_previewrender.h"
#include "BIF_screen.h"
#include "BIF_space.h"
#include "BIF_toolbox.h"
#include "BIF_transform.h"
#include "BIF_writeimage.h"

#include "BSE_drawipo.h"
#include "BSE_edit.h"
#include "BSE_filesel.h"
#include "BSE_trans_types.h"

#include "BDR_editobject.h"
#include "BDR_unwrapper.h"

#include "BMF_Api.h"

#include "RE_pipeline.h"

#include "blendef.h"
#include "multires.h"
#include "mydevice.h"

/* local prototypes */
void clever_numbuts_sima(void);
void sel_uvco_inside_radius(short , MTFace *, int , float *, float *, short);
void uvedit_selectionCB(short , Object *, short *, float ); /* used in edit.c*/ 

void object_uvs_changed(Object *ob)
{
	DAG_object_flush_update(G.scene, ob, OB_RECALC_DATA);

	allqueue(REDRAWVIEW3D, 0);
	allqueue(REDRAWIMAGE, 0);
}

void object_tface_flags_changed(Object *ob, int updateButtons)
{
	if (updateButtons) allqueue(REDRAWBUTSEDIT, 0);
	allqueue(REDRAWVIEW3D, 0);
	allqueue(REDRAWIMAGE, 0);
}

int is_uv_tface_editing_allowed_silent(void)
{
	Mesh *me;

	if(G.obedit) return 0;
	if(G.sima->mode!=SI_TEXTURE) return 0;
	if(!(G.f & G_FACESELECT)) return 0;  
	me= get_mesh(OBACT);
	if(me==0 || me->mtface==0) return 0;
	if(multires_level1_test()) return 0;
	
	return 1;
}

int is_uv_tface_editing_allowed(void)
{
	if(G.obedit) error("Unable to perform action in Edit Mode");

	return is_uv_tface_editing_allowed_silent();
}

void get_connected_limit_tface_uv(float *limit)
{
	ImBuf *ibuf= BKE_image_get_ibuf(G.sima->image, &G.sima->iuser);
	if(ibuf && ibuf->x > 0 && ibuf->y > 0) {
		limit[0]= 0.05/(float)ibuf->x;
		limit[1]= 0.05/(float)ibuf->y;
	}
	else
		limit[0]= limit[1]= 0.05/256.0;
}

void clever_numbuts_sima(void)
{
	float ocent[2], cent[2]= {0.0, 0.0};
	int imx= 256, imy= 256;
	int i, nactive= 0;
	Mesh *me;
	
	if( is_uv_tface_editing_allowed()==0 ) return;
	me= get_mesh(OBACT);
	
	if (G.sima->image) {
		ImBuf *ibuf= BKE_image_get_ibuf(G.sima->image, &G.sima->iuser);
		if(ibuf) {
			imx= ibuf->x;
			imy= ibuf->y;
		}
	}
	
	for (i=0; i<me->totface; i++) {
		MFace *mf= &((MFace*) me->mface)[i];
		MTFace *tf= &((MTFace*) me->mtface)[i];
		
		if (!(mf->flag & ME_FACE_SEL))
			continue;
		
		if (tf->flag & TF_SEL1) {
			cent[0]+= tf->uv[0][0];
			cent[1]+= tf->uv[0][1];
			nactive++;
		}
		if (tf->flag & TF_SEL2) {
			cent[0]+= tf->uv[1][0];
			cent[1]+= tf->uv[1][1];
			nactive++;
		}
		if (tf->flag & TF_SEL3) {
			cent[0]+= tf->uv[2][0];
			cent[1]+= tf->uv[2][1];
			nactive++;
		}
		if (mf->v4 && (tf->flag & TF_SEL4)) {
			cent[0]+= tf->uv[3][0];
			cent[1]+= tf->uv[3][1];
			nactive++;
		}
	}
	
	if (nactive) {
		cent[0]= (cent[0]*imx)/nactive;
		cent[1]= (cent[1]*imy)/nactive;

		add_numbut(0, NUM|FLO, "LocX:", -imx*20, imx*20, &cent[0], NULL);
		add_numbut(1, NUM|FLO, "LocY:", -imy*20, imy*20, &cent[1], NULL);
		
		ocent[0]= cent[0];
		ocent[1]= cent[1];
		if (do_clever_numbuts((nactive==1)?"Active Vertex":"Selected Center", 2, REDRAW)) {
			float delta[2];
			
			delta[0]= (cent[0]-ocent[0])/imx;
			delta[1]= (cent[1]-ocent[1])/imy;

			for (i=0; i<me->totface; i++) {
				MFace *mf= &((MFace*) me->mface)[i];
				MTFace *tf= &((MTFace*) me->mtface)[i];
			
				if (!(mf->flag & ME_FACE_SEL))
					continue;
			
				if (tf->flag & TF_SEL1) {
					tf->uv[0][0]+= delta[0];
					tf->uv[0][1]+= delta[1];
				}
				if (tf->flag & TF_SEL2) {
					tf->uv[1][0]+= delta[0];
					tf->uv[1][1]+= delta[1];
				}
				if (tf->flag & TF_SEL3) {
					tf->uv[2][0]+= delta[0];
					tf->uv[2][1]+= delta[1];
				}
				if (mf->v4 && (tf->flag & TF_SEL4)) {
					tf->uv[3][0]+= delta[0];
					tf->uv[3][1]+= delta[1];
				}
			}
			
			object_uvs_changed(OBACT);
		}
	}
}

void be_square_tface_uv(Mesh *me)
{
	MTFace *tface;
	MFace *mface;
	int a;
	
	/* if 1 vertex selected: doit (with the selected vertex) */
	mface= (MFace*)me->mface;
	tface= (MTFace*)me->mtface;
	for(a=me->totface; a>0; a--, tface++, mface++) {
		if(mface->v4) {
			if(mface->flag & ME_FACE_SEL) {
				if(tface->flag & TF_SEL1) {
					if( tface->uv[1][0] == tface->uv[2][0] ) {
						tface->uv[1][1]= tface->uv[0][1];
						tface->uv[3][0]= tface->uv[0][0];
					}
					else {	
						tface->uv[1][0]= tface->uv[0][0];
						tface->uv[3][1]= tface->uv[0][1];
					}
					
				}
				if(tface->flag & TF_SEL2) {
					if( tface->uv[2][1] == tface->uv[3][1] ) {
						tface->uv[2][0]= tface->uv[1][0];
						tface->uv[0][1]= tface->uv[1][1];
					}
					else {
						tface->uv[2][1]= tface->uv[1][1];
						tface->uv[0][0]= tface->uv[1][0];
					}

				}
				if(tface->flag & TF_SEL3) {
					if( tface->uv[3][0] == tface->uv[0][0] ) {
						tface->uv[3][1]= tface->uv[2][1];
						tface->uv[1][0]= tface->uv[2][0];
					}
					else {
						tface->uv[3][0]= tface->uv[2][0];
						tface->uv[1][1]= tface->uv[2][1];
					}
				}
				if(tface->flag & TF_SEL4) {
					if( tface->uv[0][1] == tface->uv[1][1] ) {
						tface->uv[0][0]= tface->uv[3][0];
						tface->uv[2][1]= tface->uv[3][1];
					}
					else  {
						tface->uv[0][1]= tface->uv[3][1];
						tface->uv[2][0]= tface->uv[3][0];
					}

				}
			}
		}
	}
}

void transform_aspect_ratio_tface_uv(float *aspx, float *aspy)
{
	int w, h;

	transform_width_height_tface_uv(&w, &h);
	*aspx= (float)w/256.0f;
	*aspy= (float)h/256.0f;
}

void transform_width_height_tface_uv(int *width, int *height)
{
	ImBuf *ibuf= BKE_image_get_ibuf(G.sima->image, &G.sima->iuser);

	if(ibuf) {
		*width= ibuf->x;
		*height= ibuf->y;
	}
	else {
		*width= 256;
		*height= 256;
	}
}

void mirror_tface_uv(char mirroraxis)
{
	if (mirroraxis == 'x')
		Mirror(1); /* global x */
	else if (mirroraxis == 'y')
		Mirror(2); /* global y */
}

void mirrormenu_tface_uv(void)
{
	short mode= 0;

	if( is_uv_tface_editing_allowed()==0 ) return;

	mode= pupmenu("Mirror%t|X Axis%x1|Y Axis%x2|");

	if(mode==-1) return;

	if(mode==1) mirror_tface_uv('x');
	else if(mode==2) mirror_tface_uv('y');

	BIF_undo_push("Mirror UV");
}

void weld_align_tface_uv(char tool)
{
	MFace *mface;
	MTFace *tface;
	Mesh *me;
	float min[2], max[2], cent[2];
	int a;
	
	if( is_uv_tface_editing_allowed()==0 ) return;
	me= get_mesh(OBACT);

	if (!minmax_tface_uv(min, max))
		return;

	cent[0]= (min[0]+max[0])/2.0;
	cent[1]= (min[1]+max[1])/2.0;

	if(tool == 'x' || tool == 'w') {
		tface= me->mtface;
		mface= me->mface;
		for(a=me->totface; a>0; a--, tface++, mface++) {
			if(mface->flag & ME_FACE_SEL) {
				if(tface->flag & TF_SEL1)
					tface->uv[0][0]= cent[0];
				if(tface->flag & TF_SEL2)
					tface->uv[1][0]= cent[0];
				if(tface->flag & TF_SEL3)
					tface->uv[2][0]= cent[0];
				if(mface->v4 && (tface->flag & TF_SEL4))
					tface->uv[3][0]= cent[0];
			}
		}
	}

	if(tool == 'y' || tool == 'w') {
		tface= me->mtface;
		mface= me->mface;
		for(a=me->totface; a>0; a--, tface++, mface++) {
			if(mface->flag & ME_FACE_SEL) {
				if(tface->flag & TF_SEL1)
					tface->uv[0][1]= cent[1];
				if(tface->flag & TF_SEL2)
					tface->uv[1][1]= cent[1];
				if(tface->flag & TF_SEL3)
					tface->uv[2][1]= cent[1];
				if(mface->v4 && (tface->flag & TF_SEL4))
					tface->uv[3][1]= cent[1];
			}
		}
	}

	object_uvs_changed(OBACT);
}

void weld_align_menu_tface_uv(void)
{
	short mode= 0;

	if( is_uv_tface_editing_allowed()==0 ) return;

	mode= pupmenu("Weld/Align%t|Weld%x1|Align X%x2|Align Y%x3|");

	if(mode==-1) return;

	if(mode==1) weld_align_tface_uv('w');
	else if(mode==2) weld_align_tface_uv('x');
	else if(mode==3) weld_align_tface_uv('y');

	if(mode==1) BIF_undo_push("Weld UV");
	else if(mode==2 || mode==3) BIF_undo_push("Align UV");
}

void select_swap_tface_uv(void)
{
	Mesh *me;
	MTFace *tface;
	MFace *mface;
	int a, sel=0;
	
	if( is_uv_tface_editing_allowed()==0 ) return;
	me= get_mesh(OBACT);

	mface= me->mface;
	for(a=me->totface, tface= me->mtface; a>0; a--, tface++, mface++) {
		if(mface->flag & ME_FACE_SEL) {	
			if(tface->flag & (TF_SEL1+TF_SEL2+TF_SEL3+TF_SEL4)) {
				sel= 1;
				break;
			}
		}
	}
	
	mface= me->mface;
	for(a=me->totface, tface= me->mtface; a>0; a--, tface++, mface++) {
		if(mface->flag & ME_FACE_SEL) {
			if(mface->v4) {
				if(sel) tface->flag &= ~(TF_SEL1+TF_SEL2+TF_SEL3+TF_SEL4);
				else tface->flag |= (TF_SEL1+TF_SEL2+TF_SEL3+TF_SEL4);
			}
			else {
				if(sel) tface->flag &= ~(TF_SEL1+TF_SEL2+TF_SEL3+TF_SEL4);
				else tface->flag |= (TF_SEL1+TF_SEL2+TF_SEL3);
			}
		}
	}
	
	BIF_undo_push("Select swap UV");

	allqueue(REDRAWIMAGE, 0);
}

static int msel_hit(float *limit, unsigned int *hitarray, unsigned int vertexid, float **uv, float *uv2, int sticky)
{
	int i;
	for(i=0; i< 4; i++) {
		if(hitarray[i] == vertexid) {
			if(sticky == 2) {
				if(fabs(uv[i][0]-uv2[0]) < limit[0] &&
			    fabs(uv[i][1]-uv2[1]) < limit[1])
					return 1;
			}
			else return 1;
		}
	}
	return 0;
}

static void find_nearest_tface(MTFace **nearesttf, MFace **nearestmf)
{
	Mesh *me;
	MTFace *tf;
	MFace *mf;
	int a, i, nverts, mindist, dist, fcenter[2], uval[2];
	short mval[2];

	getmouseco_areawin(mval);	

	mindist= 0x7FFFFFF;
	*nearesttf= NULL;
	*nearestmf= NULL;

	me= get_mesh(OBACT);
	mf= (MFace*)me	->mface;
	tf= (MTFace*)me->mtface;

	for(a=me->totface; a>0; a--, tf++, mf++) {
		if(mf->flag & ME_FACE_SEL) {

			fcenter[0]= fcenter[1]= 0;
			nverts= mf->v4? 4: 3;
			for(i=0; i<nverts; i++) {
				uvco_to_areaco_noclip(tf->uv[i], uval);
				fcenter[0] += uval[0];
				fcenter[1] += uval[1];
			}

			fcenter[0] /= nverts;
			fcenter[1] /= nverts;

			dist= abs(mval[0]- fcenter[0])+ abs(mval[1]- fcenter[1]);
			if (dist < mindist) {
				*nearesttf= tf;
				*nearestmf= mf;
				mindist= dist;
			}
		}
	}
}

static int nearest_uv_between(MTFace *tf, int nverts, int id, short *mval, int *uval)
{
	float m[3], v1[3], v2[3], c1, c2;
	int id1, id2;

	id1= (id+nverts-1)%nverts;
	id2= (id+nverts+1)%nverts;

	m[0] = (float)(mval[0]-uval[0]);
	m[1] = (float)(mval[1]-uval[1]);
	Vec2Subf(v1, tf->uv[id1], tf->uv[id]);
	Vec2Subf(v2, tf->uv[id2], tf->uv[id]);

	/* 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);
}

static void find_nearest_uv(MTFace **nearesttf, unsigned int *nearestv, int *nearestuv)
{
	Mesh *me;
	MTFace *tf;
	MFace *mf;
	int a, i, nverts, mindist, dist, uval[2];
	short mval[2];

	getmouseco_areawin(mval);	

	mindist= 0x7FFFFFF;
	*nearesttf= NULL;

	me= get_mesh(OBACT);
	mf= (MFace*)me->mface;
	tf= (MTFace*)me->mtface;

	for(a=me->totface; a>0; a--, tf++, mf++) {
		if(mf->flag & ME_FACE_SEL) {

			nverts= mf->v4? 4: 3;
			for(i=0; i<nverts; i++) {
				uvco_to_areaco_noclip(tf->uv[i], uval);
				dist= abs(mval[0]-uval[0]) + abs(mval[1]-uval[1]);

				if(tf->flag & TF_SEL_MASK(i))
					dist += 5;

				if(dist<=mindist) {
					if(dist==mindist)
						if (!nearest_uv_between(tf, nverts, i, mval, uval))
							continue;

					mindist= dist; 

					*nearesttf= tf;
					*nearestuv= i;

					if (i==0) *nearestv=  mf->v1;
					else if (i==1) *nearestv=  mf->v2;
					else if (i==2) *nearestv=  mf->v3;
					else *nearestv=  mf->v4;
				}
			}
		}
	}
}

void mouse_select_sima(void)
{
	Mesh *me;
	MTFace *tf, *nearesttf;
	MFace *mf, *nearestmf=NULL;
	int a, selectsticky, sticky, actface, nearestuv, i;
	unsigned int hitv[4], nearestv;
	float *hituv[4], limit[2];
	
	if( is_uv_tface_editing_allowed()==0 ) return;
	me= get_mesh(OBACT);

	get_connected_limit_tface_uv(limit);
	actface= (G.qual & LR_ALTKEY || G.sima->flag & SI_SELACTFACE);

	if(G.qual & LR_CTRLKEY) {
		if(G.sima->flag & SI_STICKYUVS) sticky= 0;
		else sticky= 1;
	}
	else {
		if(G.sima->flag & SI_STICKYUVS) sticky= 1;
		else if(G.sima->flag & SI_LOCALSTICKY) sticky= 2;
		else sticky= 0;
	}

	if(actface) {
		find_nearest_tface(&nearesttf, &nearestmf);
		if(nearesttf==NULL)
			return;

		nearesttf->flag |= TF_ACTIVE;

		for (i=0; i<4; i++)
			hituv[i]= nearesttf->uv[i];

		hitv[0]= nearestmf->v1;
		hitv[1]= nearestmf->v2;
		hitv[2]= nearestmf->v3;
		hitv[3]= nearestmf->v4? nearestmf->v4: 0xFFFFFFFF;
	}
	else {
		find_nearest_uv(&nearesttf, &nearestv, &nearestuv);
		if(nearesttf==NULL)
			return;

		if(sticky) {
			for(i=0; i<4; i++)
				hitv[i]= 0xFFFFFFFF;
			hitv[nearestuv]= nearestv;
			hituv[nearestuv]= nearesttf->uv[nearestuv];
		}
	}

	if(G.qual & LR_SHIFTKEY) {
		/* (de)select face */
		if(actface) {
			if(!(~nearesttf->flag & (TF_SEL1|TF_SEL2|TF_SEL3))
			   && (!nearestmf->v4 || nearesttf->flag & TF_SEL4)) {
				nearesttf->flag &= ~(TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4);
				selectsticky= 0;
			}
			else {
				nearesttf->flag |= TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4;
				selectsticky= 1;
			}
		}
		/* (de)select uv node */
		else {
			if(nearesttf->flag & TF_SEL_MASK(nearestuv)) {
				nearesttf->flag &= ~TF_SEL_MASK(nearestuv);
				selectsticky= 0;
			}
			else {
				nearesttf->flag |= TF_SEL_MASK(nearestuv);
				selectsticky= 1;
			}
		}

		/* (de)select sticky uv nodes */
		if(sticky || actface) {
			mf= (MFace*)me->mface;
			tf= (MTFace*)me->mtface;
			/* deselect */
			if(selectsticky==0) {
				for(a=me->totface; a>0; a--, tf++, mf++) {
					if(!(mf->flag & ME_FACE_SEL)) continue;
					if(nearesttf && tf!=nearesttf) tf->flag &=~ TF_ACTIVE;
					if (!sticky) continue;

					if(msel_hit(limit, hitv, mf->v1, hituv, tf->uv[0], sticky))
						tf->flag &= ~TF_SEL1;
					if(msel_hit(limit, hitv, mf->v2, hituv, tf->uv[1], sticky))
						tf->flag &= ~TF_SEL2;
					if(msel_hit(limit, hitv, mf->v3, hituv, tf->uv[2], sticky))
						tf->flag &= ~TF_SEL3;
					if (mf->v4)
						if(msel_hit(limit, hitv, mf->v4, hituv, tf->uv[3], sticky))
							tf->flag &= ~TF_SEL4;
				}
			}
			/* select */
			else {
				for(a=me->totface; a>0; a--, tf++, mf++) {
					if(!(mf->flag & ME_FACE_SEL)) continue;
					if(nearesttf && tf!=nearesttf)
						tf->flag &=~ TF_ACTIVE;
					if (!sticky) continue;

					if(msel_hit(limit, hitv, mf->v1, hituv, tf->uv[0], sticky))
						tf->flag |= TF_SEL1;
					if(msel_hit(limit, hitv, mf->v2, hituv, tf->uv[1], sticky))
						tf->flag |= TF_SEL2;
					if(msel_hit(limit, hitv, mf->v3, hituv, tf->uv[2], sticky))
						tf->flag |= TF_SEL3;
					if (mf->v4)
						if(msel_hit(limit, hitv, mf->v4, hituv, tf->uv[3], sticky))
							tf->flag |= TF_SEL4;
				}
			}
		}
	}
	else {
		/* select face and deselect other faces */ 
		if(actface) {
			mf= (MFace*)me->mface;
			tf= (MTFace*)me->mtface;
			for(a=me->totface; a>0; a--, tf++, mf++) {
				tf->flag &= ~(TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4);
				if(nearesttf && tf!=nearesttf)
					tf->flag &= ~TF_ACTIVE;
			}
			if(nearesttf)
				nearesttf->flag |= (TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4);
		}

		/* deselect uvs, and select sticky uvs */
		mf= (MFace*)me->mface;
		tf= (MTFace*)me->mtface;
		for(a=me->totface; a>0; a--, tf++, mf++) {
			if(mf->flag & ME_FACE_SEL) {
				if(!actface) tf->flag &= ~(TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4);
				if(!sticky) continue;

				if(msel_hit(limit, hitv, mf->v1, hituv, tf->uv[0], sticky))
					tf->flag |= TF_SEL1;
				if(msel_hit(limit, hitv, mf->v2, hituv, tf->uv[1], sticky))
					tf->flag |= TF_SEL2;
				if(msel_hit(limit, hitv, mf->v3, hituv, tf->uv[2], sticky))
					tf->flag |= TF_SEL3;
				if(mf->v4)
					if(msel_hit(limit, hitv, mf->v4, hituv, tf->uv[3], sticky))
						tf->flag |= TF_SEL4;
			}
		}
		
		if(!actface) 
			nearesttf->flag |= TF_SEL_MASK(nearestuv);
	}
	
	force_draw(1);
	
	BIF_undo_push("Select UV");
	rightmouse_transform();
}

void borderselect_sima(short whichuvs)
{
	Mesh *me;
	MTFace *tface;
	MFace *mface;
	rcti rect;
	rctf rectf;
	int a, val;
	short mval[2];

	if( is_uv_tface_editing_allowed()==0 ) return;
	me= get_mesh(OBACT);

	val= get_border(&rect, 3);

	if(val) {
		mval[0]= rect.xmin;
		mval[1]= rect.ymin;
		areamouseco_to_ipoco(G.v2d, mval, &rectf.xmin, &rectf.ymin);
		mval[0]= rect.xmax;
		mval[1]= rect.ymax;
		areamouseco_to_ipoco(G.v2d, mval, &rectf.xmax, &rectf.ymax);

		mface= me->mface;
		for(a=me->totface, tface= me->mtface; a>0; a--, tface++, mface++) {
		
			if(mface->flag & ME_FACE_SEL) {
				
				if (whichuvs == UV_SELECT_ALL) {
				
					if(BLI_in_rctf(&rectf, (float)tface->uv[0][0], (float)tface->uv[0][1])) {
						if(val==LEFTMOUSE) tface->flag |= TF_SEL1;
						else tface->flag &= ~TF_SEL1;
					}
					if(BLI_in_rctf(&rectf, (float)tface->uv[1][0], (float)tface->uv[1][1])) {
						if(val==LEFTMOUSE) tface->flag |= TF_SEL2;
						else tface->flag &= ~TF_SEL2;
					}
					if(BLI_in_rctf(&rectf, (float)tface->uv[2][0], (float)tface->uv[2][1])) {
						if(val==LEFTMOUSE) tface->flag |= TF_SEL3;
						else tface->flag &= ~TF_SEL3;
					}
					if(mface->v4 && BLI_in_rctf(&rectf, (float)tface->uv[3][0], (float)tface->uv[3][1])) {
						if(val==LEFTMOUSE) tface->flag |= TF_SEL4;
						else tface->flag &= ~TF_SEL4;
					}
				} else if (whichuvs == UV_SELECT_PINNED) {
					if ((tface->unwrap & TF_PIN1) && 
						BLI_in_rctf(&rectf, (float)tface->uv[0][0], (float)tface->uv[0][1])) {
						
						if(val==LEFTMOUSE) tface->flag |= TF_SEL1;
						else tface->flag &= ~TF_SEL1;
					}
					if ((tface->unwrap & TF_PIN2) && 
						BLI_in_rctf(&rectf, (float)tface->uv[1][0], (float)tface->uv[1][1])) {
						
						if(val==LEFTMOUSE) tface->flag |= TF_SEL2;
						else tface->flag &= ~TF_SEL2;
					}
					if ((tface->unwrap & TF_PIN3) && 
						BLI_in_rctf(&rectf, (float)tface->uv[2][0], (float)tface->uv[2][1])) {
						
						if(val==LEFTMOUSE) tface->flag |= TF_SEL3;
						else tface->flag &= ~TF_SEL3;
					}
					if ((mface->v4) && (tface->unwrap & TF_PIN4) && BLI_in_rctf(&rectf, (float)tface->uv[3][0], (float)tface->uv[3][1])) {
						if(val==LEFTMOUSE) tface->flag |= TF_SEL4;
						else tface->flag &= ~TF_SEL4;
					}
				}
			}
							
		}
		BIF_undo_push("Border select UV");
		scrarea_queue_winredraw(curarea);
	}
}

/** This is an ugly function to set the Tface selection flags depending
  * on whether its UV coordinates are inside the normalized 
  * area with radius rad and offset offset. These coordinates must be
  * normalized to 1.0 
  * Just for readability...
  */

void sel_uvco_inside_radius(short sel, MTFace *tface, int index, float *offset, float *ell, short select_mask)
{
	// normalized ellipse: ell[0] = scaleX,
	//                        [1] = scaleY

	float *uv = tface->uv[index];
	float x, y, r2;

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

	r2 = x * x + y * y;
	if (r2 < 1.0) {
		if (sel == LEFTMOUSE) tface->flag |= select_mask;
		else tface->flag &= ~select_mask;
	}
}

// see below:
/** gets image dimensions of the 2D view 'v' */
static void getSpaceImageDimension(SpaceImage *sima, float *xy)
{
	ImBuf *ibuf= BKE_image_get_ibuf(sima->image, &sima->iuser);
	float z;

	z = sima->zoom;

	if (ibuf) {
		xy[0] = ibuf->x * z;
		xy[1] = ibuf->y * z;
	} else {
		xy[0] = 256 * z;
		xy[1] = 256 * z;
	}
}

/** Callback function called by circle_selectCB to enable 
  * brush select in UV editor.
  */

void uvedit_selectionCB(short selecting, Object *editobj, short *mval, float rad) 
{
	float offset[2];
	Mesh *me;
	MFace *mface;
	MTFace *tface;
	int i;

	float ellipse[2]; // we need to deal with ellipses, as
	                  // non square textures require for circle
					  // selection. this ellipse is normalized; r = 1.0
	
	me = get_mesh(editobj);

	getSpaceImageDimension(curarea->spacedata.first, ellipse);
	ellipse[0] /= rad;
	ellipse[1] /= rad;

	areamouseco_to_ipoco(G.v2d, mval, &offset[0], &offset[1]);

	mface= me->mface;
	tface= me->mtface;

	if (selecting) {
		for(i = 0; i < me->totface; i++) {
			sel_uvco_inside_radius(selecting, tface, 0, offset, ellipse, TF_SEL1);
			sel_uvco_inside_radius(selecting, tface, 1, offset, ellipse, TF_SEL2);
			sel_uvco_inside_radius(selecting, tface, 2, offset, ellipse, TF_SEL3);
			if (mface->v4)
				sel_uvco_inside_radius(selecting, tface, 3, offset, ellipse, TF_SEL4);
			
			tface++; mface++;

		}

		if(G.f & G_DRAWFACES) { /* full redraw only if necessary */
			draw_sel_circle(0, 0, 0, 0, 0); /* signal */
			force_draw(0);
		}
		else { /* force_draw() is no good here... */
			glDrawBuffer(GL_FRONT);
			draw_tfaces();
			bglFlush();
			glDrawBuffer(GL_BACK);
		}
	}	
}


void mouseco_to_curtile(void)
{
	float fx, fy;
	short mval[2];
	
	if( is_uv_tface_editing_allowed()==0) return;

	if(G.sima->image && G.sima->image->tpageflag & IMA_TILES) {
		
		G.sima->flag |= SI_EDITTILE;
		
		while(get_mbut()&L_MOUSE) {
			
			calc_image_view(G.sima, 'f');
			
			getmouseco_areawin(mval);
			areamouseco_to_ipoco(G.v2d, mval, &fx, &fy);

			if(fx>=0.0 && fy>=0.0 && fx<1.0 && fy<1.0) {
			
				fx= (fx)*G.sima->image->xrep;
				fy= (fy)*G.sima->image->yrep;
				
				mval[0]= fx;
				mval[1]= fy;
				
				G.sima->curtile= mval[1]*G.sima->image->xrep + mval[0];
			}

			scrarea_do_windraw(curarea);
			screen_swapbuffers();
		}
		
		G.sima->flag &= ~SI_EDITTILE;

		image_changed(G.sima, 1);

		allqueue(REDRAWVIEW3D, 0);
		scrarea_queue_winredraw(curarea);
	}
}

void hide_tface_uv(int swap)
{
	Mesh *me;
	MTFace *tface;
	MFace *mface;
	int a;

	if( is_uv_tface_editing_allowed()==0 ) return;
	me= get_mesh(OBACT);

	if(swap) {
		mface= me->mface;
		for(a=me->totface, tface= me->mtface; a>0; a--, tface++, mface++) {
			if(mface->flag & ME_FACE_SEL) {
				if((tface->flag & (TF_SEL1|TF_SEL2|TF_SEL3))==0) {
					if(!mface->v4)
						mface->flag &= ~ME_FACE_SEL;
					else if(!(tface->flag & TF_SEL4))
						mface->flag &= ~ME_FACE_SEL;
				}
			}
		}
	} else {
		mface= me->mface;
		for(a=me->totface, tface= me->mtface; a>0; a--, tface++, mface++) {
			if(mface->flag & ME_FACE_SEL) {
				if(tface->flag & (TF_SEL1|TF_SEL2|TF_SEL3))
						mface->flag &= ~ME_FACE_SEL;
				else if(mface->v4 && tface->flag & TF_SEL4)
						mface->flag &= ~ME_FACE_SEL;
			}
		}
	}

	BIF_undo_push("Hide UV");

	object_tface_flags_changed(OBACT, 0);
}

void reveal_tface_uv(void)
{
	Mesh *me;
	MTFace *tface;
	MFace *mface;
	int a;

	if( is_uv_tface_editing_allowed()==0 ) return;
	me= get_mesh(OBACT);

	mface= me->mface;
	for(a=me->totface, tface= me->mtface; a>0; a--, tface++, mface++)
		if(!(mface->flag & ME_HIDE))
			if(!(mface->flag & ME_FACE_SEL))
				tface->flag |= (TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4);
	
	BIF_undo_push("Reveal UV");

	object_tface_flags_changed(OBACT, 0);
}

void stitch_uv_tface(int mode)
{
	Mesh *me;
	MTFace *tf;
	int a, vtot;
	float newuv[2], limit[2];
	UvMapVert *vlist, *iterv, *v;
	UvVertMap *vmap;
	
	if(is_uv_tface_editing_allowed()==0)
		return;

	limit[0]= limit[1]= 20.0;
	if(mode==1) {
		add_numbut(0, NUM|FLO, "Limit:", 0.1, 1000.0, &limit[0], NULL);
		if (!do_clever_numbuts("Stitch UVs", 1, REDRAW))
			return;
	}

	limit[0]= limit[1]= limit[0]/256.0;
	if(G.sima->image) {
		ImBuf *ibuf= BKE_image_get_ibuf(G.sima->image, &G.sima->iuser);

		if(ibuf && ibuf->x > 0 && ibuf->y > 0) {
			limit[1]= limit[0]/(float)ibuf->y;
			limit[0]= limit[0]/(float)ibuf->x;
		}
	}

	me= get_mesh(OBACT);
	tf= me->mtface;

	vmap= make_uv_vert_map(me->mface, tf, me->totface, me->totvert, 1, limit);
	if(vmap == NULL)
		return;

	if(mode==0) {
		for(a=0; a<me->totvert; a++) {
			v = get_uv_map_vert(vmap, a);

			if(v == NULL)
				continue;

			newuv[0]= 0; newuv[1]= 0;
			vtot= 0;

			for(iterv=v; iterv; iterv=iterv->next) {
				if (tf[iterv->f].flag & TF_SEL_MASK(iterv->tfindex)) {
					newuv[0] += tf[iterv->f].uv[iterv->tfindex][0];
					newuv[1] += tf[iterv->f].uv[iterv->tfindex][1];
					vtot++;
				}
			}

			if (vtot > 1) {
				newuv[0] /= vtot; newuv[1] /= vtot;

				for(iterv=v; iterv; iterv=iterv->next) {
					if (tf[iterv->f].flag & TF_SEL_MASK(iterv->tfindex)) {
						tf[iterv->f].uv[iterv->tfindex][0]= newuv[0];
						tf[iterv->f].uv[iterv->tfindex][1]= newuv[1];
					}
				}
			}
		}
	} else if(mode==1) {
		for(a=0; a<me->totvert; a++) {
			vlist= get_uv_map_vert(vmap, a);

			while(vlist) {
				newuv[0]= 0; newuv[1]= 0;
				vtot= 0;

				for(iterv=vlist; iterv; iterv=iterv->next) {
					if((iterv != vlist) && iterv->separate)
						break;
					if (tf[iterv->f].flag & TF_SEL_MASK(iterv->tfindex)) {
						newuv[0] += tf[iterv->f].uv[iterv->tfindex][0];
						newuv[1] += tf[iterv->f].uv[iterv->tfindex][1];
						vtot++;
					}
				}

				if (vtot > 1) {
					newuv[0] /= vtot; newuv[1] /= vtot;

					for(iterv=vlist; iterv; iterv=iterv->next) {
						if((iterv != vlist) && iterv->separate)
							break;
						if (tf[iterv->f].flag & TF_SEL_MASK(iterv->tfindex)) {
							tf[iterv->f].uv[iterv->tfindex][0]= newuv[0];
							tf[iterv->f].uv[iterv->tfindex][1]= newuv[1];
						}
					}
				}

				vlist= iterv;
			}
		}
	}

	free_uv_vert_map(vmap);

	if(G.sima->flag & SI_BE_SQUARE) be_square_tface_uv(me);

	BIF_undo_push("Stitch UV");

	object_uvs_changed(OBACT);
}

void select_linked_tface_uv(int mode)
{
	Mesh *me;
	MFace *mf;
	MTFace *tf, *nearesttf=NULL;
	UvVertMap *vmap;
	UvMapVert *vlist, *iterv, *startv;
	unsigned int *stack, stacksize= 0, nearestv;
	char *flag;
	int a, nearestuv, i, nverts;
	float limit[2];
	
	if(is_uv_tface_editing_allowed()==0)
		return;

	me= get_mesh(OBACT);

	if (mode == 2) {
		nearesttf= NULL;
		nearestuv= 0;
	}
	if (mode!=2) {
		find_nearest_uv(&nearesttf, &nearestv, &nearestuv);
		if(nearesttf==NULL)
			return;
	}

	get_connected_limit_tface_uv(limit);
	vmap= make_uv_vert_map(me->mface, me->mtface, me->totface, me->totvert, 1, limit);
	if(vmap == NULL)
		return;

	stack= MEM_mallocN(sizeof(*stack)*me->totface, "UvLinkStack");
	flag= MEM_callocN(sizeof(*flag)*me->totface, "UvLinkFlag");

	if (mode == 2) {
		tf= me->mtface;
		mf= me->mface;
		for(a=0; a<me->totface; a++, tf++, mf++)
			if(!(mf->flag & ME_HIDE) && (mf->flag & ME_FACE_SEL))
				if(tf->flag & (TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4)) {
					stack[stacksize]= a;
					stacksize++;
					flag[a]= 1;
				}
	}
	else {
		tf= me->mtface;
		for(a=0; a<me->totface; a++, tf++)
			if(tf == nearesttf) {
				stack[stacksize]= a;
				stacksize++;
				flag[a]= 1;
				break;
			}
	}

	while(stacksize > 0) {
		stacksize--;
		a= stack[stacksize];
		mf= me->mface+a;
		tf= me->mtface+a;

		nverts= mf->v4? 4: 3;

		for(i=0; i<nverts; i++) {
			vlist= get_uv_map_vert(vmap, *(&mf->v1 + i));
			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++;
				}
			}
		}
	}

	if(mode==0 || mode==2) {
		for(a=0, tf=me->mtface; a<me->totface; a++, tf++)
			if(flag[a])
				tf->flag |= (TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4);
			else
				tf->flag &= ~(TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4);
	}
	else if(mode==1) {
		mf= me->mface;
		for(a=0, tf=me->mtface; a<me->totface; a++, tf++, mf++) {
			if(flag[a]) {
				if (mf->v4) {
					if((tf->flag & (TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4)))
						break;
				}
				else if(tf->flag & (TF_SEL1|TF_SEL2|TF_SEL3))
					break;
			}
		}

		if (a<me->totface) {
			for(a=0, tf=me->mtface; a<me->totface; a++, tf++)
				if(flag[a])
					tf->flag &= ~(TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4);
		}
		else {
			for(a=0, tf=me->mtface; a<me->totface; a++, tf++)
				if(flag[a])
					tf->flag |= (TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4);
		}
	}
	
	MEM_freeN(stack);
	MEM_freeN(flag);
	free_uv_vert_map(vmap);

	BIF_undo_push("Select linked UV");
	scrarea_queue_winredraw(curarea);
}

void unlink_selection(void)
{
	Mesh *me;
	MTFace *tface;
	MFace *mface;
	int a;

	if( is_uv_tface_editing_allowed()==0 ) return;
	me= get_mesh(OBACT);

	mface= me->mface;
	for(a=me->totface, tface= me->mtface; a>0; a--, tface++, mface++) {
		if(mface->flag & ME_FACE_SEL) {
			if(mface->v4) {
				if(~tface->flag & (TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4))
					tface->flag &= ~(TF_SEL1|TF_SEL2|TF_SEL3|TF_SEL4);
			} else {
				if(~tface->flag & (TF_SEL1|TF_SEL2|TF_SEL3))
					tface->flag &= ~(TF_SEL1|TF_SEL2|TF_SEL3);
			}
		}
	}
	
	BIF_undo_push("Unlink UV selection");
	scrarea_queue_winredraw(curarea);
}

void toggle_uv_select(int mode)
{
	switch(mode){
	case 'f':
		G.sima->flag ^= SI_SELACTFACE;
		break;
	case 's':
		G.sima->flag ^= SI_STICKYUVS; 
		if (G.sima->flag & SI_STICKYUVS) G.sima->flag &= ~SI_LOCALSTICKY;
		else G.sima->flag |= SI_LOCALSTICKY;
		break;
	case 'l': 
		 G.sima->flag ^= SI_LOCALSTICKY;
		 if (G.sima->flag & SI_LOCALSTICKY) G.sima->flag &= ~SI_STICKYUVS;
		break;
	case 'o':
		G.sima->flag &= ~SI_STICKYUVS; 
		G.sima->flag &= ~SI_LOCALSTICKY;
		break;
	}
	allqueue(REDRAWIMAGE, 0);
}

void pin_tface_uv(int mode)
{
	Mesh *me;
	MTFace *tface;
	MFace *mface;
	int a;
	
	if( is_uv_tface_editing_allowed()==0 ) return;
	me= get_mesh(OBACT);
	
	mface= me->mface;
	tface= me->mtface;
	for(a=me->totface; a>0; a--, tface++, mface++) {
		if(mface->flag & ME_FACE_SEL) {
			if(mode ==1){
				if(tface->flag & TF_SEL1) tface->unwrap |= TF_PIN1;
				if(tface->flag & TF_SEL2) tface->unwrap |= TF_PIN2;
				if(tface->flag & TF_SEL3) tface->unwrap |= TF_PIN3;
				if(mface->v4)
					if(tface->flag & TF_SEL4) tface->unwrap |= TF_PIN4;
			}
			else if (mode ==0){
				if(tface->flag & TF_SEL1) tface->unwrap &= ~TF_PIN1;
				if(tface->flag & TF_SEL2) tface->unwrap &= ~TF_PIN2;
				if(tface->flag & TF_SEL3) tface->unwrap &= ~TF_PIN3;
				if(mface->v4)
					if(tface->flag & TF_SEL4) tface->unwrap &= ~TF_PIN4;
			}
		}
	}
	
	BIF_undo_push("Pin UV");
	scrarea_queue_winredraw(curarea);
}

void select_pinned_tface_uv(void)
{
	Mesh *me;
	MTFace *tface;
	MFace *mface;
	int a;
	
	if( is_uv_tface_editing_allowed()==0 ) return;
	me= get_mesh(OBACT);
	
	mface= me->mface;
	tface= me->mtface;
	for(a=me->totface; a>0; a--, tface++, mface++) {
		if(mface->flag & ME_FACE_SEL) {
		
			if (tface->unwrap & TF_PIN1) tface->flag |= TF_SEL1;
			if (tface->unwrap & TF_PIN2) tface->flag |= TF_SEL2;
			if (tface->unwrap & TF_PIN3) tface->flag |= TF_SEL3;
			if(mface->v4) {
				if (tface->unwrap & TF_PIN4) tface->flag |= TF_SEL4;
			}
			
		}
	}
	
	BIF_undo_push("Select Pinned UVs");
	scrarea_queue_winredraw(curarea);
}

int minmax_tface_uv(float *min, float *max)
{
	Mesh *me;
	MTFace *tf;
	MFace *mf;
	int a, sel;

	if( is_uv_tface_editing_allowed()==0 ) return 0;
	me= get_mesh(OBACT);

	INIT_MINMAX2(min, max);

	sel= 0;
	mf= (MFace*)me->mface;
	tf= (MTFace*)me->mtface;
	for(a=me->totface; a>0; a--, tf++, mf++) {
		if(mf->flag & ME_HIDE);
		else if(mf->flag & ME_FACE_SEL) {

			if (tf->flag & TF_SEL1) {
				DO_MINMAX2(tf->uv[0], min, max);
			}
			if (tf->flag & TF_SEL2) {
				DO_MINMAX2(tf->uv[1], min, max);
			}
			if (tf->flag & TF_SEL3) {
				DO_MINMAX2(tf->uv[2], min, max);
			}
			if (mf->v4 && tf->flag & TF_SEL4) {
				DO_MINMAX2(tf->uv[3], min, max);
			}

			sel = 1;
		}
	}

	return sel;
}

static void sima_show_info(int channels, int x, int y, char *cp, float *fp, int *zp, float *zpf)
{
	short ofs;
	char str[256];
	
	ofs= sprintf(str, "X: %d Y: %d ", x, y);
	if(cp)
		ofs+= sprintf(str+ofs, "| R: %d G: %d B: %d A: %d ", cp[0], cp[1], cp[2], cp[3]);
	if(fp) {
		if(channels==4)
			ofs+= sprintf(str+ofs, "| R: %.3f G: %.3f B: %.3f A: %.3f ", fp[0], fp[1], fp[2], fp[3]);
		else if(channels==1)
			ofs+= sprintf(str+ofs, "| Val: %.3f ", fp[0]);
		else if(channels==3)
			ofs+= sprintf(str+ofs, "| R: %.3f G: %.3f B: %.3f ", fp[0], fp[1], fp[2]);
	}
	if(zp)
		ofs+= sprintf(str+ofs, "| Z: %.4f ", 0.5+0.5*( ((float)*zp)/(float)0x7fffffff));
	if(zpf)
		ofs+= sprintf(str+ofs, "| Z: %.3f ", *zpf);
	
	glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
	glEnable(GL_BLEND);
	
	glColor4f(.0,.0,.0,.25);
	glRectf(0.0, 0.0, curarea->winx, 30.0);
	glDisable(GL_BLEND);
	
	glColor3ub(255, 255, 255);
	glRasterPos2i(10, 10);
	
	BMF_DrawString(G.fonts, str);

}

void sima_sample_color(void)
{
	ImBuf *ibuf= BKE_image_get_ibuf(G.sima->image, &G.sima->iuser);
	float fx, fy;
	short mval[2], mvalo[2], firsttime=1;
	
	if(ibuf==NULL)
		return;
	
	calc_image_view(G.sima, 'f');
	getmouseco_areawin(mvalo);
	
	while(get_mbut() & L_MOUSE) {
		
		getmouseco_areawin(mval);
		if(mval[0]!=mvalo[0] || mval[1]!=mvalo[1] || firsttime) {
			firsttime= 0;
			areamouseco_to_ipoco(G.v2d, mval, &fx, &fy);
			
			if(fx>=0.0 && fy>=0.0 && fx<1.0 && fy<1.0) {
				float *fp= NULL, *zpf= NULL;
				int *zp= NULL;
				char *cp= NULL;
				
				int x= (int) (fx*ibuf->x);
				int y= (int) (fy*ibuf->y);
				
				if(x>=ibuf->x) x= ibuf->x-1;
				if(y>=ibuf->y) y= ibuf->y-1;
				
				if(ibuf->rect)
					cp= (char *)(ibuf->rect + y*ibuf->x + x);
				if(ibuf->zbuf)
					zp= ibuf->zbuf + y*ibuf->x + x;
				if(ibuf->zbuf_float)
					zpf= ibuf->zbuf_float + y*ibuf->x + x;
				if(ibuf->rect_float)
					fp= (ibuf->rect_float + (ibuf->channels)*(y*ibuf->x + x));
					
				if(G.sima->cumap) {
					float vec[3];
					if(fp==NULL) {
						fp= vec;
						vec[0]= (float)cp[0]/255.0f;
						vec[1]= (float)cp[1]/255.0f;
						vec[2]= (float)cp[2]/255.0f;
					}
					
					if(ibuf->channels==4) {
						if(G.qual & LR_CTRLKEY) {
							curvemapping_set_black_white(G.sima->cumap, NULL, fp);
							curvemapping_do_ibuf(G.sima->cumap, ibuf);
						}
						else if(G.qual & LR_SHIFTKEY) {
							curvemapping_set_black_white(G.sima->cumap, fp, NULL);
							curvemapping_do_ibuf(G.sima->cumap, ibuf);
						}
					}
				}
				
				scrarea_do_windraw(curarea);
				myortho2(-0.375, curarea->winx-0.375, -0.375, curarea->winy-0.375);
				glLoadIdentity();
				sima_show_info(ibuf->channels, x, y, cp, fp, zp, zpf);
				screen_swapbuffers();
			}
			
		}
		BIF_wait_for_statechange();
	}
	
	scrarea_queue_winredraw(curarea);
}

/* Image functions */

static void load_image_filesel(char *str)	/* called from fileselect */
{
	Image *ima= NULL;
 
	if(G.obedit) {
		error("Can't perfom this in editmode");
		return;
	}

	ima= BKE_add_image_file(str);
	if(ima) {

		G.sima->image= ima;

		BKE_image_signal(ima, &G.sima->iuser, IMA_SIGNAL_RELOAD);
		image_changed(G.sima, 0);

	}
	BIF_undo_push("Load image UV");
	allqueue(REDRAWIMAGE, 0);
}

static void image_replace(Image *old, Image *new)
{
	MTFace *tface;
	Mesh *me;
	int a, rep=0;

	new->tpageflag= old->tpageflag;
	new->twsta= old->twsta;
	new->twend= old->twend;
	new->xrep= old->xrep;
	new->yrep= old->yrep;
 
	me= G.main->mesh.first;
	while(me) {

		if(me->id.lib==NULL && me->mtface) {
			tface= me->mtface;
			a= me->totface;
			while(a--) {
				if(tface->tpage==old) {
					tface->tpage= new;
					rep++;
				}
				tface++;
			}
		}
		me= me->id.next;
 
	}
	if(rep) {
		if(new->id.us==0) id_us_plus(&new->id);
		else id_lib_extern(&new->id);
		
	}
	else error("Nothing replaced");
}

static void replace_image_filesel(char *str)		/* called from fileselect */
{
	Image *ima=0;

	if(G.obedit) {
		error("Can't perfom this in editmode");
		return;
	}

	ima= BKE_add_image_file(str);
	if(ima) {
 
		if(G.sima->image && G.sima->image != ima) {
			image_replace(G.sima->image, ima);
		}
 
		G.sima->image= ima;

		BKE_image_signal(ima, &G.sima->iuser, IMA_SIGNAL_RELOAD);

		/* replace also assigns: */
		image_changed(G.sima, 0);

	}
	BIF_undo_push("Replace image UV");
	allqueue(REDRAWIMAGE, 0);
}


static void save_image_doit(char *name)
{
	Image *ima= G.sima->image;
	ImBuf *ibuf= BKE_image_get_ibuf(ima, &G.sima->iuser);
	int len;
	char str[FILE_MAXDIR+FILE_MAXFILE];

	if (ibuf) {
		BLI_strncpy(str, name, sizeof(str));

		BLI_convertstringcode(str, G.sce, G.scene->r.cfra);
		
		if(G.scene->r.scemode & R_EXTENSION) 
			BKE_add_image_extension(str, G.sima->imtypenr);
		
		if (saveover(str)) {
			
			/* enforce user setting for RGB or RGBA, but skip BW */
			if(G.scene->r.planes==32)
				ibuf->depth= 32;
			else if(G.scene->r.planes==24)
				ibuf->depth= 24;
			
			waitcursor(1);
			if(G.sima->imtypenr==R_MULTILAYER) {
				RenderResult *rr= BKE_image_get_renderresult(ima);
				if(rr) {
					RE_WriteRenderResult(rr, str, G.scene->r.quality);
					
					BLI_strncpy(ima->name, name, sizeof(ima->name));
					BLI_strncpy(ibuf->name, str, sizeof(ibuf->name));
					
					/* should be function? nevertheless, saving only happens here */
					for(ibuf= ima->ibufs.first; ibuf; ibuf= ibuf->next)
						ibuf->userflags &= ~IB_BITMAPDIRTY;
					
				}
				else error("Did not write, no Multilayer Image");
			}
			else if (BKE_write_ibuf(ibuf, str, G.sima->imtypenr, G.scene->r.subimtype, G.scene->r.quality)) {
				BLI_strncpy(ima->name, name, sizeof(ima->name));
				BLI_strncpy(ibuf->name, str, sizeof(ibuf->name));
				
				ibuf->userflags &= ~IB_BITMAPDIRTY;
				
				/* change type? */
				if( ELEM(ima->source, IMA_SRC_GENERATED, IMA_SRC_VIEWER)) {
					ima->source= IMA_SRC_FILE;
					ima->type= IMA_TYPE_IMAGE;
				}
				if(ima->type==IMA_TYPE_R_RESULT)
					ima->type= IMA_TYPE_IMAGE;
				
				/* name image as how we saved it */
				len= strlen(str);
				while (len > 0 && str[len - 1] != '/' && str[len - 1] != '\\') len--;
				rename_id(&ima->id, str+len);
			} 
			else {
				error("Couldn't write image: %s", str);
			}

			allqueue(REDRAWHEADERS, 0);
			allqueue(REDRAWBUTSSHADING, 0);

			waitcursor(0);
		}
	}
}

void open_image_sima(short imageselect)
{
	char name[FILE_MAXDIR+FILE_MAXFILE];

	if(G.sima->image)
		strcpy(name, G.sima->image->name);
	else
		strcpy(name, U.textudir);

	if(imageselect)
		activate_imageselect(FILE_SPECIAL, "Open Image", name, load_image_filesel);
	else
		activate_fileselect(FILE_SPECIAL, "Open Image", name, load_image_filesel);
}

void replace_image_sima(short imageselect)
{
	char name[FILE_MAXDIR+FILE_MAXFILE];

	if(G.sima->image)
		strcpy(name, G.sima->image->name);
	else
		strcpy(name, U.textudir);
	
	if(imageselect)
		activate_imageselect(FILE_SPECIAL, "Replace Image", name, replace_image_filesel);
	else
		activate_fileselect(FILE_SPECIAL, "Replace Image", name, replace_image_filesel);
}


static char *filesel_imagetype_string(Image *ima)
{
	char *strp, *str= MEM_callocN(14*32, "menu for filesel");
	
	strp= str;
	str += sprintf(str, "Save Image as: %%t|");
	str += sprintf(str, "Targa %%x%d|", R_TARGA);
	str += sprintf(str, "Targa Raw %%x%d|", R_RAWTGA);
	str += sprintf(str, "PNG %%x%d|", R_PNG);
	str += sprintf(str, "BMP %%x%d|", R_BMP);
	str += sprintf(str, "Jpeg %%x%d|", R_JPEG90);
	str += sprintf(str, "Iris %%x%d|", R_IRIS);
	if(G.have_libtiff)
		str += sprintf(str, "Tiff %%x%d|", R_TIFF);
	str += sprintf(str, "Radiance HDR %%x%d|", R_RADHDR);
	str += sprintf(str, "Cineon %%x%d|", R_CINEON);
	str += sprintf(str, "DPX %%x%d|", R_DPX);
#ifdef WITH_OPENEXR
	str += sprintf(str, "OpenEXR %%x%d|", R_OPENEXR);
	/* saving sequences of multilayer won't work, they copy buffers  */
	if(ima->source==IMA_SRC_SEQUENCE && ima->type==IMA_TYPE_MULTILAYER);
	else str += sprintf(str, "MultiLayer %%x%d|", R_MULTILAYER);
#endif	
	return strp;
}

/* always opens fileselect */
void save_as_image_sima(void)
{
	Image *ima = G.sima->image;
	ImBuf *ibuf= BKE_image_get_ibuf(ima, &G.sima->iuser);
	char name[FILE_MAXDIR+FILE_MAXFILE];

	if (ima) {
		strcpy(name, ima->name);

		if (ibuf) {
			char *strp;
			
			strp= filesel_imagetype_string(ima);
			
			/* cant save multilayer sequence, ima->rr isn't valid for a specific frame */
			if(ima->rr && !(ima->source==IMA_SRC_SEQUENCE && ima->type==IMA_TYPE_MULTILAYER))
				G.sima->imtypenr= R_MULTILAYER;
			else if(ima->type==IMA_TYPE_R_RESULT)
				G.sima->imtypenr= R_MULTILAYER;
			else G.sima->imtypenr= BKE_ftype_to_imtype(ibuf->ftype);
			
			activate_fileselect_menu(FILE_SPECIAL, "Save Image", name, strp, &G.sima->imtypenr, save_image_doit);
		}
	}
}

/* if exists, saves over without fileselect */
void save_image_sima(void)
{
	Image *ima = G.sima->image;
	ImBuf *ibuf= BKE_image_get_ibuf(ima, &G.sima->iuser);
	char name[FILE_MAXDIR+FILE_MAXFILE];

	if (ima) {
		strcpy(name, ima->name);

		if (ibuf) {
			if (BLI_exists(ibuf->name)) {
				if(BKE_image_get_renderresult(ima)) 
					G.sima->imtypenr= R_MULTILAYER;
				else 
					G.sima->imtypenr= BKE_ftype_to_imtype(ibuf->ftype);
				
				save_image_doit(ibuf->name);
			}
			else
				save_as_image_sima();
		}
	}
}

void save_image_sequence_sima(void)
{
	ImBuf *ibuf;
	int tot= 0;
	char di[FILE_MAX], fi[FILE_MAX];
	
	if(G.sima->image==NULL)
		return;
	if(G.sima->image->source!=IMA_SRC_SEQUENCE)
		return;
	if(G.sima->image->type==IMA_TYPE_MULTILAYER) {
		error("Cannot save Multilayer Sequences");
		return;
	}
	
	/* get total */
	for(ibuf= G.sima->image->ibufs.first; ibuf; ibuf= ibuf->next) 
		if(ibuf->userflags & IB_BITMAPDIRTY)
			tot++;
	
	if(tot==0) {
		notice("No Images have been changed");
		return;
	}
	/* get a filename for menu */
	for(ibuf= G.sima->image->ibufs.first; ibuf; ibuf= ibuf->next) 
		if(ibuf->userflags & IB_BITMAPDIRTY)
			break;
	
	BLI_strncpy(di, ibuf->name, FILE_MAX);
	BLI_splitdirstring(di, fi);
	
	sprintf(fi, "%d Image(s) will be saved in %s", tot, di);
	if(okee(fi)) {
		
		for(ibuf= G.sima->image->ibufs.first; ibuf; ibuf= ibuf->next) {
			if(ibuf->userflags & IB_BITMAPDIRTY) {
				char name[FILE_MAX];
				BLI_strncpy(name, ibuf->name, sizeof(name));
				
				BLI_convertstringcode(name, G.sce, 0);

				if(0 == IMB_saveiff(ibuf, name, IB_rect | IB_zbuf | IB_zbuffloat)) {
					error("Could not write image", name);
					break;
				}
				printf("Saved: %s\n", ibuf->name);
				ibuf->userflags &= ~IB_BITMAPDIRTY;
			}
		}
	}
}

void reload_image_sima(void)
{

	if (G.sima ) {
		BKE_image_signal(G.sima->image, &G.sima->iuser, IMA_SIGNAL_RELOAD);
		image_changed(G.sima, 0);
	}

	allqueue(REDRAWIMAGE, 0);
	allqueue(REDRAWVIEW3D, 0);
	BIF_preview_changed(ID_TE);
}

void new_image_sima(void)
{
	static int width= 256, height= 256;
	static short uvtestgrid= 0;
	static float color[] = {0, 0, 0, 1};
	char name[22];

	strcpy(name, "Untitled");

	add_numbut(0, TEX, "Name:", 0, 21, name, NULL);
	add_numbut(1, NUM|INT, "Width:", 1, 5000, &width, NULL);
	add_numbut(2, NUM|INT, "Height:", 1, 5000, &height, NULL);
	add_numbut(3, COL, "", 0, 0, &color, NULL);
	add_numbut(4, NUM|FLO, "Alpha:", 0.0, 1.0, &color[3], NULL);
	add_numbut(5, TOG|SHO, "UV Test Grid", 0, 0, &uvtestgrid, NULL);
	if (!do_clever_numbuts("New Image", 6, REDRAW))
 		return;

	G.sima->image= BKE_add_image_size(width, height, name, uvtestgrid, color);
	BKE_image_signal(G.sima->image, &G.sima->iuser, IMA_SIGNAL_USER_NEW_IMAGE);
	image_changed(G.sima, 0);

	BIF_undo_push("Add image");

	allqueue(REDRAWIMAGE, 0);
	allqueue(REDRAWVIEW3D, 0);
}

void pack_image_sima()
{
	Image *ima = G.sima->image;

	if (ima) {
		if(ima->source!=IMA_SRC_SEQUENCE && ima->source!=IMA_SRC_MOVIE) {
			if (ima->packedfile) {
				if (G.fileflags & G_AUTOPACK)
					if (okee("Disable AutoPack?"))
						G.fileflags &= ~G_AUTOPACK;
				
				if ((G.fileflags & G_AUTOPACK) == 0) {
					unpackImage(ima, PF_ASK);
					BIF_undo_push("Unpack image");
				}
			}
			else {
				ImBuf *ibuf= BKE_image_get_ibuf(ima, &G.sima->iuser);
				if (ibuf && (ibuf->userflags & IB_BITMAPDIRTY)) {
					if(okee("Can't pack painted image. Use Repack as PNG?"))
						BKE_image_memorypack(ima);
				}
				else {
					ima->packedfile = newPackedFile(ima->name);
					BIF_undo_push("Pack image");
				}
			}

			allqueue(REDRAWBUTSSHADING, 0);
			allqueue(REDRAWHEADERS, 0);
		}
	}
}



/* goes over all ImageUsers, and sets frame numbers if auto-refresh is set */
void BIF_image_update_frame(void)
{
	Tex *tex;
	
	/* texture users */
	for(tex= G.main->tex.first; tex; tex= tex->id.next) {
		if(tex->type==TEX_IMAGE && tex->ima)
			if(ELEM(tex->ima->source, IMA_SRC_MOVIE, IMA_SRC_SEQUENCE))
				if(tex->iuser.flag & IMA_ANIM_ALWAYS)
					BKE_image_user_calc_imanr(&tex->iuser, G.scene->r.cfra, 0);
		
	}
	/* image window, compo node users */
	if(G.curscreen) {
		ScrArea *sa;
		for(sa= G.curscreen->areabase.first; sa; sa= sa->next) {
			if(sa->spacetype==SPACE_VIEW3D) {
				View3D *v3d= sa->spacedata.first;
				if(v3d->bgpic)
					if(v3d->bgpic->iuser.flag & IMA_ANIM_ALWAYS)
						BKE_image_user_calc_imanr(&v3d->bgpic->iuser, G.scene->r.cfra, 0);
			}
			else if(sa->spacetype==SPACE_IMAGE) {
				SpaceImage *sima= sa->spacedata.first;
				if(sima->iuser.flag & IMA_ANIM_ALWAYS)
					BKE_image_user_calc_imanr(&sima->iuser, G.scene->r.cfra, 0);
			}
			else if(sa->spacetype==SPACE_NODE) {
				SpaceNode *snode= sa->spacedata.first;
				if((snode->treetype==NTREE_COMPOSIT) && (snode->nodetree)) {
					bNode *node;
					for(node= snode->nodetree->nodes.first; node; node= node->next) {
						if(node->id && node->type==CMP_NODE_IMAGE) {
							Image *ima= (Image *)node->id;
							ImageUser *iuser= node->storage;
							if(ELEM(ima->source, IMA_SRC_MOVIE, IMA_SRC_SEQUENCE))
								if(iuser->flag & IMA_ANIM_ALWAYS)
									BKE_image_user_calc_imanr(iuser, G.scene->r.cfra, 0);
						}
					}
				}
			}
		}
	}
}