/
paint_image.c
1534 lines (1227 loc) · 40.9 KB
/
paint_image.c
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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.
*
* 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: some of this file.
*
* Contributor(s): Jens Ole Wund (bjornmose), Campbell Barton (ideasman42)
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/sculpt_paint/paint_image.c
* \ingroup edsculpt
* \brief Functions to paint images in 2D and 3D.
*/
#include <float.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include "MEM_guardedalloc.h"
#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_utildefines.h"
#include "BLI_threads.h"
#include "BLT_translation.h"
#include "IMB_imbuf.h"
#include "IMB_imbuf_types.h"
#include "DNA_brush_types.h"
#include "DNA_node_types.h"
#include "DNA_object_types.h"
#include "BKE_context.h"
#include "BKE_depsgraph.h"
#include "BKE_DerivedMesh.h"
#include "BKE_brush.h"
#include "BKE_image.h"
#include "BKE_main.h"
#include "BKE_material.h"
#include "BKE_node.h"
#include "BKE_paint.h"
#include "BKE_texture.h"
#include "UI_interface.h"
#include "UI_view2d.h"
#include "ED_image.h"
#include "ED_object.h"
#include "ED_paint.h"
#include "ED_screen.h"
#include "ED_view3d.h"
#include "WM_api.h"
#include "WM_types.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "GPU_draw.h"
#include "GPU_buffers.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
#include "IMB_colormanagement.h"
#include "paint_intern.h"
typedef struct UndoImageTile {
struct UndoImageTile *next, *prev;
char idname[MAX_ID_NAME]; /* name instead of pointer*/
char ibufname[IMB_FILENAME_SIZE];
union {
float *fp;
unsigned int *uint;
void *pt;
} rect;
unsigned short *mask;
int x, y;
Image *ima;
short source, use_float;
char gen_type;
bool valid;
} UndoImageTile;
/* this is a static resource for non-globality,
* Maybe it should be exposed as part of the
* paint operation, but for now just give a public interface */
static ImagePaintPartialRedraw imapaintpartial = {0, 0, 0, 0, 0};
static SpinLock undolock;
void image_undo_init_locks(void)
{
BLI_spin_init(&undolock);
}
void image_undo_end_locks(void)
{
BLI_spin_end(&undolock);
}
ImagePaintPartialRedraw *get_imapaintpartial(void)
{
return &imapaintpartial;
}
void set_imapaintpartial(struct ImagePaintPartialRedraw *ippr)
{
imapaintpartial = *ippr;
}
/* UNDO */
typedef enum {
COPY = 0,
RESTORE = 1,
RESTORE_COPY = 2
} CopyMode;
static void undo_copy_tile(UndoImageTile *tile, ImBuf *tmpibuf, ImBuf *ibuf, CopyMode mode)
{
if (mode == COPY) {
/* copy or swap contents of tile->rect and region in ibuf->rect */
IMB_rectcpy(tmpibuf, ibuf, 0, 0, tile->x * IMAPAINT_TILE_SIZE,
tile->y * IMAPAINT_TILE_SIZE, IMAPAINT_TILE_SIZE, IMAPAINT_TILE_SIZE);
if (ibuf->rect_float) {
SWAP(float *, tmpibuf->rect_float, tile->rect.fp);
}
else {
SWAP(unsigned int *, tmpibuf->rect, tile->rect.uint);
}
}
else {
if (mode == RESTORE_COPY) {
IMB_rectcpy(tmpibuf, ibuf, 0, 0, tile->x * IMAPAINT_TILE_SIZE,
tile->y * IMAPAINT_TILE_SIZE, IMAPAINT_TILE_SIZE, IMAPAINT_TILE_SIZE);
}
/* swap to the tmpbuf for easy copying */
if (ibuf->rect_float) {
SWAP(float *, tmpibuf->rect_float, tile->rect.fp);
}
else {
SWAP(unsigned int *, tmpibuf->rect, tile->rect.uint);
}
IMB_rectcpy(ibuf, tmpibuf, tile->x * IMAPAINT_TILE_SIZE,
tile->y * IMAPAINT_TILE_SIZE, 0, 0, IMAPAINT_TILE_SIZE, IMAPAINT_TILE_SIZE);
if (mode == RESTORE) {
if (ibuf->rect_float) {
SWAP(float *, tmpibuf->rect_float, tile->rect.fp);
}
else {
SWAP(unsigned int *, tmpibuf->rect, tile->rect.uint);
}
}
}
}
void *image_undo_find_tile(Image *ima, ImBuf *ibuf, int x_tile, int y_tile, unsigned short **mask, bool validate)
{
ListBase *lb = undo_paint_push_get_list(UNDO_PAINT_IMAGE);
UndoImageTile *tile;
short use_float = ibuf->rect_float ? 1 : 0;
for (tile = lb->first; tile; tile = tile->next) {
if (tile->x == x_tile && tile->y == y_tile && ima->gen_type == tile->gen_type && ima->source == tile->source) {
if (tile->use_float == use_float) {
if (STREQ(tile->idname, ima->id.name) && STREQ(tile->ibufname, ibuf->name)) {
if (mask) {
/* allocate mask if requested */
if (!tile->mask) {
tile->mask = MEM_callocN(sizeof(unsigned short) * IMAPAINT_TILE_SIZE * IMAPAINT_TILE_SIZE,
"UndoImageTile.mask");
}
*mask = tile->mask;
}
if (validate)
tile->valid = true;
return tile->rect.pt;
}
}
}
}
return NULL;
}
void *image_undo_push_tile(Image *ima, ImBuf *ibuf, ImBuf **tmpibuf, int x_tile, int y_tile, unsigned short **mask, bool **valid, bool proj, bool find_prev)
{
ListBase *lb = undo_paint_push_get_list(UNDO_PAINT_IMAGE);
UndoImageTile *tile;
int allocsize;
short use_float = ibuf->rect_float ? 1 : 0;
void *data;
/* check if tile is already pushed */
/* in projective painting we keep accounting of tiles, so if we need one pushed, just push! */
if (find_prev) {
data = image_undo_find_tile(ima, ibuf, x_tile, y_tile, mask, true);
if (data)
return data;
}
if (*tmpibuf == NULL)
*tmpibuf = IMB_allocImBuf(IMAPAINT_TILE_SIZE, IMAPAINT_TILE_SIZE, 32, IB_rectfloat | IB_rect);
tile = MEM_callocN(sizeof(UndoImageTile), "UndoImageTile");
BLI_strncpy(tile->idname, ima->id.name, sizeof(tile->idname));
tile->x = x_tile;
tile->y = y_tile;
/* add mask explicitly here */
if (mask)
*mask = tile->mask = MEM_callocN(sizeof(unsigned short) * IMAPAINT_TILE_SIZE * IMAPAINT_TILE_SIZE,
"UndoImageTile.mask");
allocsize = IMAPAINT_TILE_SIZE * IMAPAINT_TILE_SIZE * 4;
allocsize *= (ibuf->rect_float) ? sizeof(float) : sizeof(char);
tile->rect.pt = MEM_mapallocN(allocsize, "UndeImageTile.rect");
BLI_strncpy(tile->ibufname, ibuf->name, sizeof(tile->ibufname));
tile->gen_type = ima->gen_type;
tile->source = ima->source;
tile->use_float = use_float;
tile->valid = true;
tile->ima = ima;
if (valid)
*valid = &tile->valid;
undo_copy_tile(tile, *tmpibuf, ibuf, COPY);
if (proj)
BLI_spin_lock(&undolock);
undo_paint_push_count_alloc(UNDO_PAINT_IMAGE, allocsize);
BLI_addtail(lb, tile);
if (proj)
BLI_spin_unlock(&undolock);
return tile->rect.pt;
}
void image_undo_remove_masks(void)
{
ListBase *lb = undo_paint_push_get_list(UNDO_PAINT_IMAGE);
UndoImageTile *tile;
for (tile = lb->first; tile; tile = tile->next) {
if (tile->mask) {
MEM_freeN(tile->mask);
tile->mask = NULL;
}
}
}
static void image_undo_restore_runtime(ListBase *lb)
{
ImBuf *ibuf, *tmpibuf;
UndoImageTile *tile;
tmpibuf = IMB_allocImBuf(IMAPAINT_TILE_SIZE, IMAPAINT_TILE_SIZE, 32,
IB_rectfloat | IB_rect);
for (tile = lb->first; tile; tile = tile->next) {
Image *ima = tile->ima;
ibuf = BKE_image_acquire_ibuf(ima, NULL, NULL);
undo_copy_tile(tile, tmpibuf, ibuf, RESTORE);
GPU_free_image(ima); /* force OpenGL reload (maybe partial update will operate better?) */
if (ibuf->rect_float)
ibuf->userflags |= IB_RECT_INVALID; /* force recreate of char rect */
if (ibuf->mipmap[0])
ibuf->userflags |= IB_MIPMAP_INVALID; /* force mipmap recreatiom */
ibuf->userflags |= IB_DISPLAY_BUFFER_INVALID;
BKE_image_release_ibuf(ima, ibuf, NULL);
}
IMB_freeImBuf(tmpibuf);
}
void ED_image_undo_restore(bContext *C, ListBase *lb)
{
Main *bmain = CTX_data_main(C);
Image *ima = NULL;
ImBuf *ibuf, *tmpibuf;
UndoImageTile *tile;
tmpibuf = IMB_allocImBuf(IMAPAINT_TILE_SIZE, IMAPAINT_TILE_SIZE, 32,
IB_rectfloat | IB_rect);
for (tile = lb->first; tile; tile = tile->next) {
short use_float;
/* find image based on name, pointer becomes invalid with global undo */
if (ima && STREQ(tile->idname, ima->id.name)) {
/* ima is valid */
}
else {
ima = BLI_findstring(&bmain->image, tile->idname, offsetof(ID, name));
}
ibuf = BKE_image_acquire_ibuf(ima, NULL, NULL);
if (ima && ibuf && !STREQ(tile->ibufname, ibuf->name)) {
/* current ImBuf filename was changed, probably current frame
* was changed when painting on image sequence, rather than storing
* full image user (which isn't so obvious, btw) try to find ImBuf with
* matched file name in list of already loaded images */
BKE_image_release_ibuf(ima, ibuf, NULL);
ibuf = BKE_image_get_ibuf_with_name(ima, tile->ibufname);
}
if (!ima || !ibuf || !(ibuf->rect || ibuf->rect_float)) {
BKE_image_release_ibuf(ima, ibuf, NULL);
continue;
}
if (ima->gen_type != tile->gen_type || ima->source != tile->source) {
BKE_image_release_ibuf(ima, ibuf, NULL);
continue;
}
use_float = ibuf->rect_float ? 1 : 0;
if (use_float != tile->use_float) {
BKE_image_release_ibuf(ima, ibuf, NULL);
continue;
}
undo_copy_tile(tile, tmpibuf, ibuf, RESTORE_COPY);
GPU_free_image(ima); /* force OpenGL reload */
if (ibuf->rect_float)
ibuf->userflags |= IB_RECT_INVALID; /* force recreate of char rect */
if (ibuf->mipmap[0])
ibuf->userflags |= IB_MIPMAP_INVALID; /* force mipmap recreatiom */
ibuf->userflags |= IB_DISPLAY_BUFFER_INVALID;
DAG_id_tag_update(&ima->id, 0);
BKE_image_release_ibuf(ima, ibuf, NULL);
}
IMB_freeImBuf(tmpibuf);
}
void ED_image_undo_free(ListBase *lb)
{
UndoImageTile *tile;
for (tile = lb->first; tile; tile = tile->next)
MEM_freeN(tile->rect.pt);
}
static void image_undo_end(void)
{
ListBase *lb = undo_paint_push_get_list(UNDO_PAINT_IMAGE);
UndoImageTile *tile;
int deallocsize = 0;
int allocsize = IMAPAINT_TILE_SIZE * IMAPAINT_TILE_SIZE * 4;
/* first dispose of invalid tiles (may happen due to drag dot for instance) */
for (tile = lb->first; tile;) {
if (!tile->valid) {
UndoImageTile *tmp_tile = tile->next;
deallocsize += allocsize * ((tile->use_float) ? sizeof(float) : sizeof(char));
MEM_freeN(tile->rect.pt);
BLI_freelinkN(lb, tile);
tile = tmp_tile;
}
else {
tile = tile->next;
}
}
/* don't forget to remove the size of deallocated tiles */
undo_paint_push_count_alloc(UNDO_PAINT_IMAGE, -deallocsize);
ED_undo_paint_push_end(UNDO_PAINT_IMAGE);
}
static void image_undo_invalidate(void)
{
UndoImageTile *tile;
ListBase *lb = undo_paint_push_get_list(UNDO_PAINT_IMAGE);
for (tile = lb->first; tile; tile = tile->next)
tile->valid = false;
}
/* Imagepaint Partial Redraw & Dirty Region */
void ED_imapaint_clear_partial_redraw(void)
{
memset(&imapaintpartial, 0, sizeof(imapaintpartial));
}
void imapaint_region_tiles(ImBuf *ibuf, int x, int y, int w, int h, int *tx, int *ty, int *tw, int *th)
{
int srcx = 0, srcy = 0;
IMB_rectclip(ibuf, NULL, &x, &y, &srcx, &srcy, &w, &h);
*tw = ((x + w - 1) >> IMAPAINT_TILE_BITS);
*th = ((y + h - 1) >> IMAPAINT_TILE_BITS);
*tx = (x >> IMAPAINT_TILE_BITS);
*ty = (y >> IMAPAINT_TILE_BITS);
}
void ED_imapaint_dirty_region(Image *ima, ImBuf *ibuf, int x, int y, int w, int h, bool find_old)
{
ImBuf *tmpibuf = NULL;
int tilex, tiley, tilew, tileh, tx, ty;
int srcx = 0, srcy = 0;
IMB_rectclip(ibuf, NULL, &x, &y, &srcx, &srcy, &w, &h);
if (w == 0 || h == 0)
return;
if (!imapaintpartial.enabled) {
imapaintpartial.x1 = x;
imapaintpartial.y1 = y;
imapaintpartial.x2 = x + w;
imapaintpartial.y2 = y + h;
imapaintpartial.enabled = 1;
}
else {
imapaintpartial.x1 = min_ii(imapaintpartial.x1, x);
imapaintpartial.y1 = min_ii(imapaintpartial.y1, y);
imapaintpartial.x2 = max_ii(imapaintpartial.x2, x + w);
imapaintpartial.y2 = max_ii(imapaintpartial.y2, y + h);
}
imapaint_region_tiles(ibuf, x, y, w, h, &tilex, &tiley, &tilew, &tileh);
for (ty = tiley; ty <= tileh; ty++)
for (tx = tilex; tx <= tilew; tx++)
image_undo_push_tile(ima, ibuf, &tmpibuf, tx, ty, NULL, NULL, false, find_old);
ibuf->userflags |= IB_BITMAPDIRTY;
if (tmpibuf)
IMB_freeImBuf(tmpibuf);
}
void imapaint_image_update(SpaceImage *sima, Image *image, ImBuf *ibuf, short texpaint)
{
if (imapaintpartial.x1 != imapaintpartial.x2 &&
imapaintpartial.y1 != imapaintpartial.y2)
{
IMB_partial_display_buffer_update_delayed(ibuf, imapaintpartial.x1, imapaintpartial.y1,
imapaintpartial.x2, imapaintpartial.y2);
}
if (ibuf->mipmap[0])
ibuf->userflags |= IB_MIPMAP_INVALID;
/* todo: should set_tpage create ->rect? */
if (texpaint || (sima && sima->lock)) {
int w = imapaintpartial.x2 - imapaintpartial.x1;
int h = imapaintpartial.y2 - imapaintpartial.y1;
if (w && h) {
/* Testing with partial update in uv editor too */
GPU_paint_update_image(image, (sima ? &sima->iuser : NULL), imapaintpartial.x1, imapaintpartial.y1, w, h);
}
}
}
/* paint blur kernels. Projective painting enforces use of a 2x2 kernel due to lagging */
BlurKernel *paint_new_blur_kernel(Brush *br, bool proj)
{
int i, j;
BlurKernel *kernel = MEM_mallocN(sizeof(BlurKernel), "blur kernel");
float radius;
int side;
BlurKernelType type = br->blur_mode;
if (proj) {
radius = 0.5f;
side = kernel->side = 2;
kernel->side_squared = kernel->side * kernel->side;
kernel->wdata = MEM_mallocN(sizeof(float) * kernel->side_squared, "blur kernel data");
kernel->pixel_len = radius;
}
else {
if (br->blur_kernel_radius <= 0)
br->blur_kernel_radius = 1;
radius = br->blur_kernel_radius;
side = kernel->side = radius * 2 + 1;
kernel->side_squared = kernel->side * kernel->side;
kernel->wdata = MEM_mallocN(sizeof(float) * kernel->side_squared, "blur kernel data");
kernel->pixel_len = br->blur_kernel_radius;
}
switch (type) {
case KERNEL_BOX:
for (i = 0; i < kernel->side_squared; i++)
kernel->wdata[i] = 1.0;
break;
case KERNEL_GAUSSIAN:
{
/* at 3.0 standard deviations distance, kernel is about zero */
float standard_dev = radius / 3.0f;
/* make the necessary adjustment to the value for use in the normal distribution formula */
standard_dev = -standard_dev * standard_dev * 2;
for (i = 0; i < side; i++) {
for (j = 0; j < side; j++) {
float idist = radius - i;
float jdist = radius - j;
float value = exp((idist * idist + jdist * jdist) / standard_dev);
kernel->wdata[i + j * side] = value;
}
}
break;
}
default:
printf("unidentified kernel type, aborting\n");
MEM_freeN(kernel->wdata);
MEM_freeN(kernel);
return NULL;
}
return kernel;
}
void paint_delete_blur_kernel(BlurKernel *kernel)
{
if (kernel->wdata)
MEM_freeN(kernel->wdata);
}
/************************ image paint poll ************************/
static Brush *image_paint_brush(bContext *C)
{
Scene *scene = CTX_data_scene(C);
ToolSettings *settings = scene->toolsettings;
return BKE_paint_brush(&settings->imapaint.paint);
}
static int image_paint_poll(bContext *C)
{
Object *obact;
if (!image_paint_brush(C))
return 0;
obact = CTX_data_active_object(C);
if ((obact && obact->mode & OB_MODE_TEXTURE_PAINT) && CTX_wm_region_view3d(C)) {
return 1;
}
else {
SpaceImage *sima = CTX_wm_space_image(C);
if (sima) {
ARegion *ar = CTX_wm_region(C);
if ((sima->mode == SI_MODE_PAINT) && ar->regiontype == RGN_TYPE_WINDOW) {
return 1;
}
}
}
return 0;
}
static int image_paint_2d_clone_poll(bContext *C)
{
Brush *brush = image_paint_brush(C);
if (!CTX_wm_region_view3d(C) && image_paint_poll(C))
if (brush && (brush->imagepaint_tool == PAINT_TOOL_CLONE))
if (brush->clone.image)
return 1;
return 0;
}
/************************ paint operator ************************/
typedef enum TexPaintMode {
PAINT_MODE_2D,
PAINT_MODE_3D_PROJECT
} TexPaintMode;
typedef struct PaintOperation {
TexPaintMode mode;
void *custom_paint;
float prevmouse[2];
float startmouse[2];
double starttime;
void *cursor;
ViewContext vc;
} PaintOperation;
bool paint_use_opacity_masking(Brush *brush)
{
return (brush->flag & BRUSH_AIRBRUSH) ||
(brush->flag & BRUSH_DRAG_DOT) ||
(brush->flag & BRUSH_ANCHORED) ||
(brush->imagepaint_tool == PAINT_TOOL_SMEAR) ||
(brush->imagepaint_tool == PAINT_TOOL_SOFTEN) ||
(brush->imagepaint_tool == PAINT_TOOL_FILL) ||
(brush->flag & BRUSH_USE_GRADIENT) ||
(brush->mtex.tex && !ELEM(brush->mtex.brush_map_mode, MTEX_MAP_MODE_TILED, MTEX_MAP_MODE_STENCIL, MTEX_MAP_MODE_3D)) ?
false : true;
}
void paint_brush_color_get(struct Scene *scene, struct Brush *br, bool color_correction, bool invert, float distance,
float pressure, float color[3], struct ColorManagedDisplay *display)
{
if (invert)
copy_v3_v3(color, BKE_brush_secondary_color_get(scene, br));
else {
if (br->flag & BRUSH_USE_GRADIENT) {
float color_gr[4];
switch (br->gradient_stroke_mode) {
case BRUSH_GRADIENT_PRESSURE:
do_colorband(br->gradient, pressure, color_gr);
break;
case BRUSH_GRADIENT_SPACING_REPEAT:
{
float coord = fmod(distance / br->gradient_spacing, 1.0);
do_colorband(br->gradient, coord, color_gr);
break;
}
case BRUSH_GRADIENT_SPACING_CLAMP:
{
do_colorband(br->gradient, distance / br->gradient_spacing, color_gr);
break;
}
}
copy_v3_v3(color, color_gr);
}
else
copy_v3_v3(color, BKE_brush_color_get(scene, br));
}
if (color_correction)
IMB_colormanagement_display_to_scene_linear_v3(color, display);
}
void paint_brush_init_tex(Brush *brush)
{
/* init mtex nodes */
if (brush) {
MTex *mtex = &brush->mtex;
if (mtex->tex && mtex->tex->nodetree)
ntreeTexBeginExecTree(mtex->tex->nodetree); /* has internal flag to detect it only does it once */
mtex = &brush->mask_mtex;
if (mtex->tex && mtex->tex->nodetree)
ntreeTexBeginExecTree(mtex->tex->nodetree);
}
}
void paint_brush_exit_tex(Brush *brush)
{
if (brush) {
MTex *mtex = &brush->mtex;
if (mtex->tex && mtex->tex->nodetree)
ntreeTexEndExecTree(mtex->tex->nodetree->execdata);
mtex = &brush->mask_mtex;
if (mtex->tex && mtex->tex->nodetree)
ntreeTexEndExecTree(mtex->tex->nodetree->execdata);
}
}
static void gradient_draw_line(bContext *UNUSED(C), int x, int y, void *customdata)
{
PaintOperation *pop = (PaintOperation *)customdata;
if (pop) {
glEnable(GL_LINE_SMOOTH);
glEnable(GL_BLEND);
glLineWidth(4.0);
glColor4ub(0, 0, 0, 255);
sdrawline(x, y, pop->startmouse[0], pop->startmouse[1]);
glLineWidth(2.0);
glColor4ub(255, 255, 255, 255);
sdrawline(x, y, pop->startmouse[0], pop->startmouse[1]);
glDisable(GL_BLEND);
glDisable(GL_LINE_SMOOTH);
}
}
static PaintOperation *texture_paint_init(bContext *C, wmOperator *op, const float mouse[2])
{
Scene *scene = CTX_data_scene(C);
ToolSettings *settings = scene->toolsettings;
PaintOperation *pop = MEM_callocN(sizeof(PaintOperation), "PaintOperation"); /* caller frees */
Brush *brush = BKE_paint_brush(&settings->imapaint.paint);
int mode = RNA_enum_get(op->ptr, "mode");
view3d_set_viewcontext(C, &pop->vc);
copy_v2_v2(pop->prevmouse, mouse);
copy_v2_v2(pop->startmouse, mouse);
/* initialize from context */
if (CTX_wm_region_view3d(C)) {
Object *ob = OBACT;
bool uvs, mat, tex, stencil;
if (!BKE_paint_proj_mesh_data_check(scene, ob, &uvs, &mat, &tex, &stencil)) {
BKE_paint_data_warning(op->reports, uvs, mat, tex, stencil);
MEM_freeN(pop);
WM_event_add_notifier(C, NC_SCENE | ND_TOOLSETTINGS, NULL);
return NULL;
}
pop->mode = PAINT_MODE_3D_PROJECT;
pop->custom_paint = paint_proj_new_stroke(C, ob, mouse, mode);
}
else {
pop->mode = PAINT_MODE_2D;
pop->custom_paint = paint_2d_new_stroke(C, op, mode);
}
if (!pop->custom_paint) {
MEM_freeN(pop);
return NULL;
}
if ((brush->imagepaint_tool == PAINT_TOOL_FILL) && (brush->flag & BRUSH_USE_GRADIENT)) {
pop->cursor = WM_paint_cursor_activate(CTX_wm_manager(C), image_paint_poll, gradient_draw_line, pop);
}
settings->imapaint.flag |= IMAGEPAINT_DRAWING;
ED_undo_paint_push_begin(UNDO_PAINT_IMAGE, op->type->name,
ED_image_undo_restore, ED_image_undo_free, NULL);
return pop;
}
/* restore painting image to previous state. Used for anchored and drag-dot style brushes*/
static void paint_stroke_restore(void)
{
ListBase *lb = undo_paint_push_get_list(UNDO_PAINT_IMAGE);
image_undo_restore_runtime(lb);
image_undo_invalidate();
}
static void paint_stroke_update_step(bContext *C, struct PaintStroke *stroke, PointerRNA *itemptr)
{
PaintOperation *pop = paint_stroke_mode_data(stroke);
Scene *scene = CTX_data_scene(C);
ToolSettings *toolsettings = CTX_data_tool_settings(C);
UnifiedPaintSettings *ups = &toolsettings->unified_paint_settings;
Brush *brush = BKE_paint_brush(&toolsettings->imapaint.paint);
float alphafac = (brush->flag & BRUSH_ACCUMULATE) ? ups->overlap_factor : 1.0f;
/* initial brush values. Maybe it should be considered moving these to stroke system */
float startalpha = BKE_brush_alpha_get(scene, brush);
float mouse[2];
float pressure;
float size;
float distance = paint_stroke_distance_get(stroke);
int eraser;
RNA_float_get_array(itemptr, "mouse", mouse);
pressure = RNA_float_get(itemptr, "pressure");
eraser = RNA_boolean_get(itemptr, "pen_flip");
size = max_ff(1.0f, RNA_float_get(itemptr, "size"));
/* stroking with fill tool only acts on stroke end */
if (brush->imagepaint_tool == PAINT_TOOL_FILL) {
copy_v2_v2(pop->prevmouse, mouse);
return;
}
if (BKE_brush_use_alpha_pressure(scene, brush))
BKE_brush_alpha_set(scene, brush, max_ff(0.0f, startalpha * pressure * alphafac));
else
BKE_brush_alpha_set(scene, brush, max_ff(0.0f, startalpha * alphafac));
if ((brush->flag & BRUSH_DRAG_DOT) || (brush->flag & BRUSH_ANCHORED)) {
paint_stroke_restore();
}
if (pop->mode == PAINT_MODE_3D_PROJECT) {
paint_proj_stroke(C, pop->custom_paint, pop->prevmouse, mouse, eraser, pressure, distance, size);
}
else {
paint_2d_stroke(pop->custom_paint, pop->prevmouse, mouse, eraser, pressure, distance, size);
}
copy_v2_v2(pop->prevmouse, mouse);
/* restore brush values */
BKE_brush_alpha_set(scene, brush, startalpha);
}
static void paint_stroke_redraw(const bContext *C, struct PaintStroke *stroke, bool final)
{
PaintOperation *pop = paint_stroke_mode_data(stroke);
if (pop->mode == PAINT_MODE_3D_PROJECT) {
paint_proj_redraw(C, pop->custom_paint, final);
}
else {
paint_2d_redraw(C, pop->custom_paint, final);
}
}
static void paint_stroke_done(const bContext *C, struct PaintStroke *stroke)
{
Scene *scene = CTX_data_scene(C);
ToolSettings *toolsettings = scene->toolsettings;
PaintOperation *pop = paint_stroke_mode_data(stroke);
Brush *brush = BKE_paint_brush(&toolsettings->imapaint.paint);
toolsettings->imapaint.flag &= ~IMAGEPAINT_DRAWING;
if (brush->imagepaint_tool == PAINT_TOOL_FILL) {
if (brush->flag & BRUSH_USE_GRADIENT) {
if (pop->mode == PAINT_MODE_2D) {
paint_2d_gradient_fill(C, brush, pop->startmouse, pop->prevmouse, pop->custom_paint);
}
else {
paint_proj_stroke(C, pop->custom_paint, pop->startmouse, pop->prevmouse, paint_stroke_flipped(stroke),
1.0, 0.0, BKE_brush_size_get(scene, brush));
/* two redraws, one for GPU update, one for notification */
paint_proj_redraw(C, pop->custom_paint, false);
paint_proj_redraw(C, pop->custom_paint, true);
}
}
else {
if (pop->mode == PAINT_MODE_2D) {
float color[3];
srgb_to_linearrgb_v3_v3(color, BKE_brush_color_get(scene, brush));
paint_2d_bucket_fill(C, color, brush, pop->prevmouse, pop->custom_paint);
}
else {
paint_proj_stroke(C, pop->custom_paint, pop->startmouse, pop->prevmouse, paint_stroke_flipped(stroke),
1.0, 0.0, BKE_brush_size_get(scene, brush));
/* two redraws, one for GPU update, one for notification */
paint_proj_redraw(C, pop->custom_paint, false);
paint_proj_redraw(C, pop->custom_paint, true);
}
}
}
if (pop->mode == PAINT_MODE_3D_PROJECT) {
paint_proj_stroke_done(pop->custom_paint);
}
else {
paint_2d_stroke_done(pop->custom_paint);
}
if (pop->cursor) {
WM_paint_cursor_end(CTX_wm_manager(C), pop->cursor);
}
image_undo_end();
/* duplicate warning, see texpaint_init */
#if 0
if (pop->s.warnmultifile)
BKE_reportf(op->reports, RPT_WARNING, "Image requires 4 color channels to paint: %s", pop->s.warnmultifile);
if (pop->s.warnpackedfile)
BKE_reportf(op->reports, RPT_WARNING, "Packed MultiLayer files cannot be painted: %s", pop->s.warnpackedfile);
#endif
MEM_freeN(pop);
}
static bool paint_stroke_test_start(bContext *C, wmOperator *op, const float mouse[2])
{
PaintOperation *pop;
/* TODO Should avoid putting this here. Instead, last position should be requested
* from stroke system. */
if (!(pop = texture_paint_init(C, op, mouse))) {
return false;
}
paint_stroke_set_mode_data(op->customdata, pop);
return true;
}
static int paint_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
int retval;
op->customdata = paint_stroke_new(C, op, NULL, paint_stroke_test_start,
paint_stroke_update_step,
paint_stroke_redraw,
paint_stroke_done, event->type);
if ((retval = op->type->modal(C, op, event)) == OPERATOR_FINISHED) {
paint_stroke_data_free(op);
return OPERATOR_FINISHED;
}
/* add modal handler */
WM_event_add_modal_handler(C, op);
OPERATOR_RETVAL_CHECK(retval);
BLI_assert(retval == OPERATOR_RUNNING_MODAL);
return OPERATOR_RUNNING_MODAL;
}
static int paint_exec(bContext *C, wmOperator *op)
{
PropertyRNA *strokeprop;
PointerRNA firstpoint;
float mouse[2];
strokeprop = RNA_struct_find_property(op->ptr, "stroke");
if (!RNA_property_collection_lookup_int(op->ptr, strokeprop, 0, &firstpoint))
return OPERATOR_CANCELLED;
RNA_float_get_array(&firstpoint, "mouse", mouse);
op->customdata = paint_stroke_new(C, op, NULL, paint_stroke_test_start,
paint_stroke_update_step,
paint_stroke_redraw,
paint_stroke_done, 0);
/* frees op->customdata */
return paint_stroke_exec(C, op);
}
void PAINT_OT_image_paint(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Image Paint";
ot->idname = "PAINT_OT_image_paint";
ot->description = "Image Paint\nPaint a stroke into the image";
/* api callbacks */
ot->invoke = paint_invoke;
ot->modal = paint_stroke_modal;
ot->exec = paint_exec;
ot->poll = image_paint_poll;
ot->cancel = paint_stroke_cancel;
/* flags */
ot->flag = OPTYPE_BLOCKING;
paint_stroke_operator_properties(ot);
}
int get_imapaint_zoom(bContext *C, float *zoomx, float *zoomy)
{
RegionView3D *rv3d = CTX_wm_region_view3d(C);