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/*
* ***** 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) Blender Foundation, 2002-2009
* All rights reserved.
*
* Contributor(s): Antony Riakiotakis
*
* ***** END GPL LICENSE BLOCK *****
*
* UV Sculpt tools
*
*/
/** \file blender/editors/sculpt_paint/sculpt_uv.c
* \ingroup edsculpt
*/
#include "MEM_guardedalloc.h"
#include "BLI_utildefines.h"
#include "BLI_math.h"
#include "BLI_ghash.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_brush_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "BKE_brush.h"
#include "BKE_paint.h"
#include "BKE_context.h"
#include "BKE_main.h"
#include "BKE_depsgraph.h"
#include "BKE_mesh.h"
#include "BKE_customdata.h"
#include "BKE_tessmesh.h"
#include "ED_screen.h"
#include "ED_image.h"
#include "ED_mesh.h"
#include "WM_api.h"
#include "WM_types.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "RNA_enum_types.h"
#include "paint_intern.h"
#include "uvedit_intern.h"
#include "UI_view2d.h"
#define MARK_BOUNDARY 1
typedef struct UvAdjacencyElement {
/* pointer to original uvelement */
UvElement *element;
/* uv pointer for convenience. Caution, this points to the original UVs! */
float *uv;
/* general use flag (Used to check if Element is boundary here) */
char flag;
} UvAdjacencyElement;
typedef struct UvEdge {
unsigned int uv1;
unsigned int uv2;
/* general use flag (Used to check if edge is boundary here, and propagates to adjacency elements) */
char flag;
} UvEdge;
typedef struct UVInitialStrokeElement {
/* index to unique uv */
int uv;
/* strength of brush on initial position */
float strength;
/* initial uv position */
float initial_uv[2];
} UVInitialStrokeElement;
typedef struct UVInitialStroke {
/* Initial Selection,for grab brushes for instance */
UVInitialStrokeElement *initialSelection;
/* total initially selected UVs*/
int totalInitialSelected;
/* initial mouse coordinates */
float init_coord[2];
} UVInitialStroke;
/* custom data for uv smoothing brush */
typedef struct UvSculptData {
/* Contains the first of each set of coincident uvs.
* These will be used to perform smoothing on and propagate the changes
* to their coincident uvs */
UvAdjacencyElement *uv;
/* ...Is what it says */
int totalUniqueUvs;
/* Edges used for adjacency info, used with laplacian smoothing */
UvEdge *uvedges;
/* need I say more? */
int totalUvEdges;
/* data for initial stroke, used by tools like grab */
UVInitialStroke *initial_stroke;
/* timer to be used for airbrush-type brush */
wmTimer *timer;
/* to determine quickly adjacent uvs */
UvElementMap *elementMap;
/* uvsmooth Paint for fast reference */
Paint *uvsculpt;
/* tool to use. duplicating here to change if modifier keys are pressed */
char tool;
/* store invert flag here */
char invert;
} UvSculptData;
/*********** Improved Laplacian Relaxation Operator ************************/
/* original code by Raul Fernandez Hernandez "farsthary" *
* adapted to uv smoothing by Antony Riakiatakis *
***************************************************************************/
typedef struct Temp_UvData {
float sum_co[2], p[2], b[2], sum_b[2];
int ncounter;
} Temp_UVData;
void HC_relaxation_iteration_uv(BMEditMesh *em, UvSculptData *sculptdata, float mouse_coord[2],
float alpha, float radius, float aspectRatio)
{
Temp_UVData *tmp_uvdata;
float diff[2];
int i;
float radius_root = sqrt(radius);
Brush *brush = paint_brush(sculptdata->uvsculpt);
tmp_uvdata = (Temp_UVData *)MEM_callocN(sculptdata->totalUniqueUvs * sizeof(Temp_UVData), "Temporal data");
/* counting neighbors */
for (i = 0; i < sculptdata->totalUvEdges; i++) {
UvEdge *tmpedge = sculptdata->uvedges + i;
tmp_uvdata[tmpedge->uv1].ncounter++;
tmp_uvdata[tmpedge->uv2].ncounter++;
add_v2_v2(tmp_uvdata[tmpedge->uv2].sum_co, sculptdata->uv[tmpedge->uv1].uv);
add_v2_v2(tmp_uvdata[tmpedge->uv1].sum_co, sculptdata->uv[tmpedge->uv2].uv);
}
for (i = 0; i < sculptdata->totalUniqueUvs; i++) {
copy_v2_v2(diff, tmp_uvdata[i].sum_co);
mul_v2_fl(diff, 1.f / tmp_uvdata[i].ncounter);
copy_v2_v2(tmp_uvdata[i].p, diff);
tmp_uvdata[i].b[0] = diff[0] - sculptdata->uv[i].uv[0];
tmp_uvdata[i].b[1] = diff[1] - sculptdata->uv[i].uv[1];
}
for (i = 0; i < sculptdata->totalUvEdges; i++) {
UvEdge *tmpedge = sculptdata->uvedges + i;
add_v2_v2(tmp_uvdata[tmpedge->uv1].sum_b, tmp_uvdata[tmpedge->uv2].b);
add_v2_v2(tmp_uvdata[tmpedge->uv2].sum_b, tmp_uvdata[tmpedge->uv1].b);
}
for (i = 0; i < sculptdata->totalUniqueUvs; i++) {
float dist;
/* This is supposed to happen only if "Pin Edges" is on, since we have initialization on stroke start
* If ever uv brushes get their own mode we should check for toolsettings option too */
if ((sculptdata->uv[i].flag & MARK_BOUNDARY)) {
continue;
}
sub_v2_v2v2(diff, sculptdata->uv[i].uv, mouse_coord);
diff[1] /= aspectRatio;
if ((dist = dot_v2v2(diff, diff)) <= radius) {
UvElement *element;
float strength;
strength = alpha * brush_curve_strength(brush, sqrt(dist), radius_root);
sculptdata->uv[i].uv[0] = (1.0 - strength) * sculptdata->uv[i].uv[0] + strength * (tmp_uvdata[i].p[0] - 0.5f * (tmp_uvdata[i].b[0] + tmp_uvdata[i].sum_b[0] / tmp_uvdata[i].ncounter));
sculptdata->uv[i].uv[1] = (1.0 - strength) * sculptdata->uv[i].uv[1] + strength * (tmp_uvdata[i].p[1] - 0.5f * (tmp_uvdata[i].b[1] + tmp_uvdata[i].sum_b[1] / tmp_uvdata[i].ncounter));
for (element = sculptdata->uv[i].element; element; element = element->next) {
MLoopUV *luv;
BMLoop *l;
if (element->separate && element != sculptdata->uv[i].element)
break;
l = element->l;
luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
copy_v2_v2(luv->uv, sculptdata->uv[i].uv);
}
}
}
MEM_freeN(tmp_uvdata);
return;
}
static void laplacian_relaxation_iteration_uv(BMEditMesh *em, UvSculptData *sculptdata, float mouse_coord[2], float alpha, float radius, float aspectRatio)
{
Temp_UVData *tmp_uvdata;
float diff[2];
int i;
float radius_root = sqrt(radius);
Brush *brush = paint_brush(sculptdata->uvsculpt);
tmp_uvdata = (Temp_UVData *)MEM_callocN(sculptdata->totalUniqueUvs * sizeof(Temp_UVData), "Temporal data");
/* counting neighbors */
for (i = 0; i < sculptdata->totalUvEdges; i++) {
UvEdge *tmpedge = sculptdata->uvedges + i;
tmp_uvdata[tmpedge->uv1].ncounter++;
tmp_uvdata[tmpedge->uv2].ncounter++;
add_v2_v2(tmp_uvdata[tmpedge->uv2].sum_co, sculptdata->uv[tmpedge->uv1].uv);
add_v2_v2(tmp_uvdata[tmpedge->uv1].sum_co, sculptdata->uv[tmpedge->uv2].uv);
}
/* Original Lacplacian algorithm included removal of normal component of translation. here it is not
* needed since we translate along the UV plane always.*/
for (i = 0; i < sculptdata->totalUniqueUvs; i++) {
copy_v2_v2(tmp_uvdata[i].p, tmp_uvdata[i].sum_co);
mul_v2_fl(tmp_uvdata[i].p, 1.f / tmp_uvdata[i].ncounter);
}
for (i = 0; i < sculptdata->totalUniqueUvs; i++) {
float dist;
/* This is supposed to happen only if "Pin Edges" is on, since we have initialization on stroke start
* If ever uv brushes get their own mode we should check for toolsettings option too */
if ((sculptdata->uv[i].flag & MARK_BOUNDARY)) {
continue;
}
sub_v2_v2v2(diff, sculptdata->uv[i].uv, mouse_coord);
diff[1] /= aspectRatio;
if ((dist = dot_v2v2(diff, diff)) <= radius) {
UvElement *element;
float strength;
strength = alpha * brush_curve_strength(brush, sqrt(dist), radius_root);
sculptdata->uv[i].uv[0] = (1.0 - strength) * sculptdata->uv[i].uv[0] + strength * tmp_uvdata[i].p[0];
sculptdata->uv[i].uv[1] = (1.0 - strength) * sculptdata->uv[i].uv[1] + strength * tmp_uvdata[i].p[1];
for (element = sculptdata->uv[i].element; element; element = element->next) {
MLoopUV *luv;
BMLoop *l;
if (element->separate && element != sculptdata->uv[i].element)
break;
l = element->l;
luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
copy_v2_v2(luv->uv, sculptdata->uv[i].uv);
}
}
}
MEM_freeN(tmp_uvdata);
return;
}
static void uv_sculpt_stroke_apply(bContext *C, wmOperator *op, wmEvent *event, Object *obedit)
{
float co[2], radius, radius_root;
Scene *scene = CTX_data_scene(C);
ARegion *ar = CTX_wm_region(C);
BMEditMesh *em = BMEdit_FromObject(obedit);
unsigned int tool;
UvSculptData *sculptdata = (UvSculptData *)op->customdata;
SpaceImage *sima;
int invert;
int width, height;
float aspectRatio;
float alpha, zoomx, zoomy;
Brush *brush = paint_brush(sculptdata->uvsculpt);
ToolSettings *toolsettings = CTX_data_tool_settings(C);
tool = sculptdata->tool;
invert = sculptdata->invert ? -1 : 1;
alpha = brush_alpha(scene, brush);
UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &co[0], &co[1]);
sima = CTX_wm_space_image(C);
ED_space_image_size(sima, &width, &height);
ED_space_image_zoom(sima, ar, &zoomx, &zoomy);
radius = brush_size(scene, brush) / (width * zoomx);
aspectRatio = width / (float)height;
/* We will compare squares to save some computation */
radius = radius * radius;
radius_root = sqrt(radius);
/*
* Pinch Tool
*/
if (tool == UV_SCULPT_TOOL_PINCH) {
int i;
alpha *= invert;
for (i = 0; i < sculptdata->totalUniqueUvs; i++) {
float dist, diff[2];
/* This is supposed to happen only if "Lock Borders" is on, since we have initialization on stroke start
* If ever uv brushes get their own mode we should check for toolsettings option too */
if (sculptdata->uv[i].flag & MARK_BOUNDARY) {
continue;
}
sub_v2_v2v2(diff, sculptdata->uv[i].uv, co);
diff[1] /= aspectRatio;
if ((dist = dot_v2v2(diff, diff)) <= radius) {
UvElement *element;
float strength;
strength = alpha * brush_curve_strength(brush, sqrt(dist), radius_root);
normalize_v2(diff);
sculptdata->uv[i].uv[0] -= strength * diff[0] * 0.001;
sculptdata->uv[i].uv[1] -= strength * diff[1] * 0.001;
for (element = sculptdata->uv[i].element; element; element = element->next) {
MLoopUV *luv;
BMLoop *l;
if (element->separate && element != sculptdata->uv[i].element)
break;
l = element->l;
luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
copy_v2_v2(luv->uv, sculptdata->uv[i].uv);
}
}
}
}
/*
* Smooth Tool
*/
else if (tool == UV_SCULPT_TOOL_RELAX) {
unsigned int method = toolsettings->uv_relax_method;
if (method == UV_SCULPT_TOOL_RELAX_HC) {
HC_relaxation_iteration_uv(em, sculptdata, co, alpha, radius, aspectRatio);
}
else {
laplacian_relaxation_iteration_uv(em, sculptdata, co, alpha, radius, aspectRatio);
}
}
/*
* Grab Tool
*/
else if (tool == UV_SCULPT_TOOL_GRAB) {
int i;
float diff[2];
sub_v2_v2v2(diff, co, sculptdata->initial_stroke->init_coord);
for (i = 0; i < sculptdata->initial_stroke->totalInitialSelected; i++) {
UvElement *element;
int uvindex = sculptdata->initial_stroke->initialSelection[i].uv;
float strength = sculptdata->initial_stroke->initialSelection[i].strength;
sculptdata->uv[uvindex].uv[0] = sculptdata->initial_stroke->initialSelection[i].initial_uv[0] + strength * diff[0];
sculptdata->uv[uvindex].uv[1] = sculptdata->initial_stroke->initialSelection[i].initial_uv[1] + strength * diff[1];
for (element = sculptdata->uv[uvindex].element; element; element = element->next) {
MLoopUV *luv;
BMLoop *l;
if (element->separate && element != sculptdata->uv[uvindex].element)
break;
l = element->l;
luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
copy_v2_v2(luv->uv, sculptdata->uv[uvindex].uv);
}
}
}
}
static void uv_sculpt_stroke_exit(bContext *C, wmOperator *op)
{
UvSculptData *data = op->customdata;
if (data->timer) {
WM_event_remove_timer(CTX_wm_manager(C), CTX_wm_window(C), data->timer);
}
if (data->elementMap) {
EDBM_uv_element_map_free(data->elementMap);
}
if (data->uv) {
MEM_freeN(data->uv);
}
if (data->uvedges) {
MEM_freeN(data->uvedges);
}
if (data->initial_stroke) {
if (data->initial_stroke->initialSelection) {
MEM_freeN(data->initial_stroke->initialSelection);
}
MEM_freeN(data->initial_stroke);
}
MEM_freeN(data);
op->customdata = NULL;
}
static int uv_element_offset_from_face_get(UvElementMap *map, BMFace *efa, BMLoop *l, int island_index, int doIslands)
{
UvElement *element = ED_uv_element_get(map, efa, l);
if (!element || (doIslands && element->island != island_index)) {
return -1;
}
return element - map->buf;
}
static unsigned int uv_edge_hash(const void *key)
{
UvEdge *edge = (UvEdge *)key;
return (BLI_ghashutil_inthash(SET_INT_IN_POINTER(edge->uv2)) +
BLI_ghashutil_inthash(SET_INT_IN_POINTER(edge->uv1)));
}
static int uv_edge_compare(const void *a, const void *b)
{
UvEdge *edge1 = (UvEdge *)a;
UvEdge *edge2 = (UvEdge *)b;
if ((edge1->uv1 == edge2->uv1) && (edge1->uv2 == edge2->uv2)) {
return 0;
}
return 1;
}
static UvSculptData *uv_sculpt_stroke_init(bContext *C, wmOperator *op, wmEvent *event)
{
Scene *scene = CTX_data_scene(C);
Object *obedit = CTX_data_edit_object(C);
ToolSettings *ts = scene->toolsettings;
UvSculptData *data = MEM_callocN(sizeof(*data), "UV Smooth Brush Data");
BMEditMesh *em = BMEdit_FromObject(obedit);
BMesh *bm = em->bm;
op->customdata = data;
if (data) {
int counter = 0, i;
ARegion *ar = CTX_wm_region(C);
float co[2];
BMFace *efa;
MLoopUV *luv;
BMLoop *l;
BMIter iter, liter;
UvEdge *edges;
GHash *edgeHash;
GHashIterator *ghi;
int do_island_optimization = !(ts->uv_sculpt_settings & UV_SCULPT_ALL_ISLANDS);
int island_index = 0;
/* Holds, for each UvElement in elementMap, a pointer to its unique uv.*/
int *uniqueUv;
data->tool = (RNA_enum_get(op->ptr, "mode") == BRUSH_STROKE_SMOOTH) ? UV_SCULPT_TOOL_RELAX : ts->uv_sculpt_tool;
data->invert = (RNA_enum_get(op->ptr, "mode") == BRUSH_STROKE_INVERT) ? 1 : 0;
data->uvsculpt = &ts->uvsculpt->paint;
if (do_island_optimization) {
/* We will need island information */
if (ts->uv_flag & UV_SYNC_SELECTION) {
data->elementMap = EDBM_uv_element_map_create(em, 0, 1);
}
else {
data->elementMap = EDBM_uv_element_map_create(em, 1, 1);
}
}
else {
if (ts->uv_flag & UV_SYNC_SELECTION) {
data->elementMap = EDBM_uv_element_map_create(em, 0, 0);
}
else {
data->elementMap = EDBM_uv_element_map_create(em, 1, 0);
}
}
if (!data->elementMap) {
uv_sculpt_stroke_exit(C, op);
return NULL;
}
/* Mouse coordinates, useful for some functions like grab and sculpt all islands */
UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &co[0], &co[1]);
/* we need to find the active island here */
if (do_island_optimization) {
UvElement *element;
NearestHit hit;
Image *ima = CTX_data_edit_image(C);
uv_find_nearest_vert(scene, ima, em, co, NULL, &hit);
element = ED_uv_element_get(data->elementMap, hit.efa, hit.l);
island_index = element->island;
}
/* Count 'unique' uvs */
for (i = 0; i < data->elementMap->totalUVs; i++) {
if (data->elementMap->buf[i].separate &&
(!do_island_optimization || data->elementMap->buf[i].island == island_index))
{
counter++;
}
}
/* Allocate the unique uv buffers */
data->uv = MEM_mallocN(sizeof(*data->uv) * counter, "uv_brush_unique_uvs");
uniqueUv = MEM_mallocN(sizeof(*uniqueUv) * data->elementMap->totalUVs, "uv_brush_unique_uv_map");
edgeHash = BLI_ghash_new(uv_edge_hash, uv_edge_compare, "uv_brush_edge_hash");
/* we have at most totalUVs edges */
edges = MEM_mallocN(sizeof(*edges) * data->elementMap->totalUVs, "uv_brush_all_edges");
if (!data->uv || !uniqueUv || !edgeHash || !edges) {
if (edges) {
MEM_freeN(edges);
}
if (uniqueUv) {
MEM_freeN(uniqueUv);
}
if (edgeHash) {
MEM_freeN(edgeHash);
}
uv_sculpt_stroke_exit(C, op);
return NULL;
}
data->totalUniqueUvs = counter;
/* So that we can use this as index for the UvElements */
counter = -1;
/* initialize the unique UVs */
for (i = 0; i < bm->totvert; i++) {
UvElement *element = data->elementMap->vert[i];
for (; element; element = element->next) {
if (element->separate) {
if (do_island_optimization && (element->island != island_index)) {
/* skip this uv if not on the active island */
for (; element->next && !(element->next->separate); element = element->next)
;
continue;
}
l = element->l;
luv = CustomData_bmesh_get(&em->bm->ldata, l->head.data, CD_MLOOPUV);
counter++;
data->uv[counter].element = element;
data->uv[counter].flag = 0;
data->uv[counter].uv = luv->uv;
}
/* pointer arithmetic to the rescue, as always :)*/
uniqueUv[element - data->elementMap->buf] = counter;
}
}
/* Now, on to generate our uv connectivity data */
counter = 0;
BM_ITER_MESH (efa, &iter, em->bm, BM_FACES_OF_MESH) {
BM_ITER_ELEM (l, &liter, efa, BM_LOOPS_OF_FACE) {
int offset1, itmp1 = uv_element_offset_from_face_get(data->elementMap, efa, l, island_index, do_island_optimization);
int offset2, itmp2 = uv_element_offset_from_face_get(data->elementMap, efa, l->next, island_index, do_island_optimization);
/* Skip edge if not found(unlikely) or not on valid island */
if (itmp1 == -1 || itmp2 == -1)
continue;
offset1 = uniqueUv[itmp1];
offset2 = uniqueUv[itmp2];
edges[counter].flag = 0;
/* using an order policy, sort uvs according to address space. This avoids
* Having two different UvEdges with the same uvs on different positions */
if (offset1 < offset2) {
edges[counter].uv1 = offset1;
edges[counter].uv2 = offset2;
}
else {
edges[counter].uv1 = offset2;
edges[counter].uv2 = offset1;
}
/* Hack! Set the value of the key to its flag. Now we can set the flag when an edge exists twice :) */
if (BLI_ghash_haskey(edgeHash, &edges[counter])) {
char *flag = BLI_ghash_lookup(edgeHash, &edges[counter]);
*flag = 1;
}
else {
/* Hack mentioned */
BLI_ghash_insert(edgeHash, &edges[counter], &edges[counter].flag);
}
counter++;
}
}
MEM_freeN(uniqueUv);
/* Allocate connectivity data, we allocate edges once */
data->uvedges = MEM_mallocN(sizeof(*data->uvedges) * BLI_ghash_size(edgeHash), "uv_brush_edge_connectivity_data");
if (!data->uvedges) {
BLI_ghash_free(edgeHash, NULL, NULL);
MEM_freeN(edges);
uv_sculpt_stroke_exit(C, op);
return NULL;
}
ghi = BLI_ghashIterator_new(edgeHash);
if (!ghi) {
BLI_ghash_free(edgeHash, NULL, NULL);
MEM_freeN(edges);
uv_sculpt_stroke_exit(C, op);
return NULL;
}
/* fill the edges with data */
for (i = 0; !BLI_ghashIterator_isDone(ghi); BLI_ghashIterator_step(ghi)) {
data->uvedges[i++] = *((UvEdge *)BLI_ghashIterator_getKey(ghi));
}
data->totalUvEdges = BLI_ghash_size(edgeHash);
/* cleanup temporary stuff */
BLI_ghashIterator_free(ghi);
BLI_ghash_free(edgeHash, NULL, NULL);
MEM_freeN(edges);
/* transfer boundary edge property to uvs */
if (ts->uv_sculpt_settings & UV_SCULPT_LOCK_BORDERS) {
for (i = 0; i < data->totalUvEdges; i++) {
if (!data->uvedges[i].flag) {
data->uv[data->uvedges[i].uv1].flag |= MARK_BOUNDARY;
data->uv[data->uvedges[i].uv2].flag |= MARK_BOUNDARY;
}
}
}
/* Allocate initial selection for grab tool */
if (data->tool == UV_SCULPT_TOOL_GRAB) {
float radius, radius_root;
UvSculptData *sculptdata = (UvSculptData *)op->customdata;
SpaceImage *sima;
int width, height;
float aspectRatio;
float alpha, zoomx, zoomy;
Brush *brush = paint_brush(sculptdata->uvsculpt);
alpha = brush_alpha(scene, brush);
radius = brush_size(scene, brush);
sima = CTX_wm_space_image(C);
ED_space_image_size(sima, &width, &height);
ED_space_image_zoom(sima, ar, &zoomx, &zoomy);
aspectRatio = width / (float)height;
radius /= (width * zoomx);
radius = radius * radius;
radius_root = sqrt(radius);
/* Allocate selection stack */
data->initial_stroke = MEM_mallocN(sizeof(*data->initial_stroke), "uv_sculpt_initial_stroke");
if (!data->initial_stroke) {
uv_sculpt_stroke_exit(C, op);
}
data->initial_stroke->initialSelection = MEM_mallocN(sizeof(*data->initial_stroke->initialSelection) * data->totalUniqueUvs, "uv_sculpt_initial_selection");
if (!data->initial_stroke->initialSelection) {
uv_sculpt_stroke_exit(C, op);
}
copy_v2_v2(data->initial_stroke->init_coord, co);
counter = 0;
for (i = 0; i < data->totalUniqueUvs; i++) {
float dist, diff[2];
if (data->uv[i].flag & MARK_BOUNDARY) {
continue;
}
sub_v2_v2v2(diff, data->uv[i].uv, co);
diff[1] /= aspectRatio;
if ((dist = dot_v2v2(diff, diff)) <= radius) {
float strength;
strength = alpha * brush_curve_strength(brush, sqrt(dist), radius_root);
data->initial_stroke->initialSelection[counter].uv = i;
data->initial_stroke->initialSelection[counter].strength = strength;
copy_v2_v2(data->initial_stroke->initialSelection[counter].initial_uv, data->uv[i].uv);
counter++;
}
}
data->initial_stroke->totalInitialSelected = counter;
}
}
return op->customdata;
}
static int uv_sculpt_stroke_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
UvSculptData *data;
Object *obedit = CTX_data_edit_object(C);
if (!(data = uv_sculpt_stroke_init(C, op, event))) {
return OPERATOR_CANCELLED;
}
uv_sculpt_stroke_apply(C, op, event, obedit);
data->timer = WM_event_add_timer(CTX_wm_manager(C), CTX_wm_window(C), TIMER, 0.001f);
if (!data->timer) {
uv_sculpt_stroke_exit(C, op);
return OPERATOR_CANCELLED;
}
WM_event_add_modal_handler(C, op);
return OPERATOR_RUNNING_MODAL;
}
static int uv_sculpt_stroke_modal(bContext *C, wmOperator *op, wmEvent *event)
{
UvSculptData *data = (UvSculptData *)op->customdata;
Object *obedit = CTX_data_edit_object(C);
switch (event->type) {
case LEFTMOUSE:
case MIDDLEMOUSE:
case RIGHTMOUSE:
uv_sculpt_stroke_exit(C, op);
return OPERATOR_FINISHED;
case MOUSEMOVE:
case INBETWEEN_MOUSEMOVE:
uv_sculpt_stroke_apply(C, op, event, obedit);
break;
case TIMER:
if (event->customdata == data->timer)
uv_sculpt_stroke_apply(C, op, event, obedit);
break;
default:
return OPERATOR_RUNNING_MODAL;
}
ED_region_tag_redraw(CTX_wm_region(C));
WM_event_add_notifier(C, NC_GEOM | ND_DATA, obedit->data);
DAG_id_tag_update(obedit->data, 0);
return OPERATOR_RUNNING_MODAL;
}
void SCULPT_OT_uv_sculpt_stroke(wmOperatorType *ot)
{
static EnumPropertyItem stroke_mode_items[] = {
{BRUSH_STROKE_NORMAL, "NORMAL", 0, "Normal", "Apply brush normally"},
{BRUSH_STROKE_INVERT, "INVERT", 0, "Invert", "Invert action of brush for duration of stroke"},
{BRUSH_STROKE_SMOOTH, "RELAX", 0, "Relax", "Switch brush to relax mode for duration of stroke"},
{0}
};
/* identifiers */
ot->name = "Sculpt UVs";
ot->description = "Sculpt UVs using a brush";
ot->idname = "SCULPT_OT_uv_sculpt_stroke";
/* api callbacks */
ot->invoke = uv_sculpt_stroke_invoke;
ot->modal = uv_sculpt_stroke_modal;
ot->poll = uv_sculpt_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* props */
RNA_def_enum(ot->srna, "mode", stroke_mode_items, BRUSH_STROKE_NORMAL, "Mode", "Stroke Mode");
}
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