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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2017 Blender Foundation. */
/** \file
* \ingroup edgpencil
*/
#include <stdio.h>
#include "MEM_guardedalloc.h"
#include "BLI_blenlib.h"
#include "BLI_ghash.h"
#include "BLI_math.h"
#include "BLI_stack.h"
#include "BLI_utildefines.h"
#include "BLT_translation.h"
#include "DNA_brush_types.h"
#include "DNA_gpencil_types.h"
#include "DNA_image_types.h"
#include "DNA_material_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_windowmanager_types.h"
#include "BKE_brush.h"
#include "BKE_context.h"
#include "BKE_deform.h"
#include "BKE_gpencil.h"
#include "BKE_gpencil_geom.h"
#include "BKE_image.h"
#include "BKE_lib_id.h"
#include "BKE_main.h"
#include "BKE_material.h"
#include "BKE_paint.h"
#include "BKE_report.h"
#include "BKE_screen.h"
#include "ED_gpencil.h"
#include "ED_keyframing.h"
#include "ED_screen.h"
#include "ED_space_api.h"
#include "ED_view3d.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "IMB_imbuf.h"
#include "IMB_imbuf_types.h"
#include "GPU_framebuffer.h"
#include "GPU_immediate.h"
#include "GPU_matrix.h"
#include "GPU_state.h"
#include "UI_interface.h"
#include "WM_api.h"
#include "WM_types.h"
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_query.h"
#include "gpencil_intern.h"
#define LEAK_HORZ 0
#define LEAK_VERT 1
#define MIN_WINDOW_SIZE 128
/* Set to 1 to debug filling internal image. By default, the value must be 0. */
#define FILL_DEBUG 0
/* Duplicated: etempFlags */
enum {
GP_DRAWFILLS_NOSTATUS = (1 << 0), /* don't draw status info */
GP_DRAWFILLS_ONLY3D = (1 << 1), /* only draw 3d-strokes */
};
/* Temporary fill operation data `op->customdata`. */
typedef struct tGPDfill {
bContext *C;
struct Main *bmain;
struct Depsgraph *depsgraph;
/** window where painting originated */
struct wmWindow *win;
/** current scene from context */
struct Scene *scene;
/** current active gp object */
struct Object *ob;
/** area where painting originated */
struct ScrArea *area;
/** region where painting originated */
struct RegionView3D *rv3d;
/** view3 where painting originated */
struct View3D *v3d;
/** region where painting originated */
struct ARegion *region;
/** Current GP data-block. */
struct bGPdata *gpd;
/** current material */
struct Material *mat;
/** current brush */
struct Brush *brush;
/** layer */
struct bGPDlayer *gpl;
/** frame */
struct bGPDframe *gpf;
/** Temp mouse position stroke. */
struct bGPDstroke *gps_mouse;
/** Pointer to report messages. */
struct ReportList *reports;
/** For operations that require occlusion testing. */
struct ViewDepths *depths;
/** flags */
short flag;
/** avoid too fast events */
short oldkey;
/** send to back stroke */
bool on_back;
/** Flag for render mode */
bool is_render;
/** Flag to check something was done. */
bool done;
/** mouse fill center position */
int mouse[2];
/** windows width */
int sizex;
/** window height */
int sizey;
/** lock to viewport axis */
int lock_axis;
/** number of pixel to consider the leak is too small (x 2) */
short fill_leak;
/** factor for transparency */
float fill_threshold;
/** number of simplify steps */
int fill_simplylvl;
/** boundary limits drawing mode */
int fill_draw_mode;
/* scaling factor */
float fill_factor;
/* Frame to use. */
int active_cfra;
/** number of elements currently in cache */
short sbuffer_used;
/** temporary points */
void *sbuffer;
/** depth array for reproject */
float *depth_arr;
/** temp image */
Image *ima;
/** temp points data */
BLI_Stack *stack;
/** handle for drawing strokes while operator is running 3d stuff */
void *draw_handle_3d;
/* Temporary size x. */
int bwinx;
/* Temporary size y. */
int bwiny;
rcti brect;
/* Space Conversion Data */
GP_SpaceConversion gsc;
/** Zoom factor. */
float zoom;
/** Factor of extension. */
float fill_extend_fac;
} tGPDfill;
bool skip_layer_check(short fill_layer_mode, int gpl_active_index, int gpl_index);
static void gpencil_draw_boundary_lines(const struct bContext *UNUSED(C), struct tGPDfill *tgpf);
/* Delete any temporary stroke. */
static void gpencil_delete_temp_stroke_extension(tGPDfill *tgpf, const bool all_frames)
{
LISTBASE_FOREACH (bGPDlayer *, gpl, &tgpf->gpd->layers) {
if (gpl->flag & GP_LAYER_HIDE) {
continue;
}
bGPDframe *init_gpf = (all_frames) ? gpl->frames.first :
BKE_gpencil_layer_frame_get(
gpl, tgpf->active_cfra, GP_GETFRAME_USE_PREV);
if (init_gpf == NULL) {
continue;
}
for (bGPDframe *gpf = init_gpf; gpf; gpf = gpf->next) {
LISTBASE_FOREACH_MUTABLE (bGPDstroke *, gps, &gpf->strokes) {
/* free stroke */
if ((gps->flag & GP_STROKE_NOFILL) && (gps->flag & GP_STROKE_TAG)) {
BLI_remlink(&gpf->strokes, gps);
BKE_gpencil_free_stroke(gps);
}
}
if (!all_frames) {
break;
}
}
}
}
static void extrapolate_points_by_length(bGPDspoint *a,
bGPDspoint *b,
float length,
float r_point[3])
{
float ab[3];
sub_v3_v3v3(ab, &b->x, &a->x);
normalize_v3(ab);
mul_v3_fl(ab, length);
add_v3_v3v3(r_point, &b->x, ab);
}
/* Loop all layers create stroke extensions. */
static void gpencil_create_extensions(tGPDfill *tgpf)
{
Object *ob = tgpf->ob;
bGPdata *gpd = tgpf->gpd;
Brush *brush = tgpf->brush;
BrushGpencilSettings *brush_settings = brush->gpencil_settings;
bGPDlayer *gpl_active = BKE_gpencil_layer_active_get(gpd);
BLI_assert(gpl_active != NULL);
const int gpl_active_index = BLI_findindex(&gpd->layers, gpl_active);
BLI_assert(gpl_active_index >= 0);
LISTBASE_FOREACH (bGPDlayer *, gpl, &gpd->layers) {
if (gpl->flag & GP_LAYER_HIDE) {
continue;
}
/* Decide if the strokes of layers are included or not depending on the layer mode. */
const int gpl_index = BLI_findindex(&gpd->layers, gpl);
bool skip = skip_layer_check(brush_settings->fill_layer_mode, gpl_active_index, gpl_index);
if (skip) {
continue;
}
bGPDframe *gpf = BKE_gpencil_layer_frame_get(gpl, tgpf->active_cfra, GP_GETFRAME_USE_PREV);
if (gpf == NULL) {
continue;
}
LISTBASE_FOREACH (bGPDstroke *, gps, &gpf->strokes) {
/* Check if stroke can be drawn. */
if ((gps->points == NULL) || (gps->totpoints < 2)) {
continue;
}
if (gps->flag & (GP_STROKE_NOFILL | GP_STROKE_TAG)) {
continue;
}
/* Check if the color is visible. */
MaterialGPencilStyle *gp_style = BKE_gpencil_material_settings(ob, gps->mat_nr + 1);
if ((gp_style == NULL) || (gp_style->flag & GP_MATERIAL_HIDE)) {
continue;
}
/* Extend start. */
bGPDspoint *pt0 = &gps->points[1];
bGPDspoint *pt1 = &gps->points[0];
bGPDstroke *gps_new = BKE_gpencil_stroke_new(gps->mat_nr, 2, gps->thickness);
gps_new->flag |= GP_STROKE_NOFILL | GP_STROKE_TAG;
BLI_addtail(&gpf->strokes, gps_new);
bGPDspoint *pt = &gps_new->points[0];
copy_v3_v3(&pt->x, &pt1->x);
pt->strength = 1.0f;
pt->pressure = 1.0f;
pt = &gps_new->points[1];
pt->strength = 1.0f;
pt->pressure = 1.0f;
extrapolate_points_by_length(pt0, pt1, tgpf->fill_extend_fac * 0.1f, &pt->x);
/* Extend end. */
pt0 = &gps->points[gps->totpoints - 2];
pt1 = &gps->points[gps->totpoints - 1];
gps_new = BKE_gpencil_stroke_new(gps->mat_nr, 2, gps->thickness);
gps_new->flag |= GP_STROKE_NOFILL | GP_STROKE_TAG;
BLI_addtail(&gpf->strokes, gps_new);
pt = &gps_new->points[0];
copy_v3_v3(&pt->x, &pt1->x);
pt->strength = 1.0f;
pt->pressure = 1.0f;
pt = &gps_new->points[1];
pt->strength = 1.0f;
pt->pressure = 1.0f;
extrapolate_points_by_length(pt0, pt1, tgpf->fill_extend_fac * 0.1f, &pt->x);
}
}
}
static void gpencil_update_extend(tGPDfill *tgpf)
{
gpencil_delete_temp_stroke_extension(tgpf, false);
if (tgpf->fill_extend_fac > 0.0f) {
gpencil_create_extensions(tgpf);
}
WM_event_add_notifier(tgpf->C, NC_GPENCIL | NA_EDITED, NULL);
}
static bool gpencil_stroke_is_drawable(tGPDfill *tgpf, bGPDstroke *gps)
{
if (tgpf->is_render) {
return true;
}
const bool show_help = (tgpf->flag & GP_BRUSH_FILL_SHOW_HELPLINES) != 0;
const bool show_extend = (tgpf->flag & GP_BRUSH_FILL_SHOW_EXTENDLINES) != 0;
const bool is_extend = (gps->flag & GP_STROKE_NOFILL) && (gps->flag & GP_STROKE_TAG);
if ((!show_help) && (show_extend)) {
if (!is_extend) {
return false;
}
}
if ((show_help) && (!show_extend)) {
if (is_extend) {
return false;
}
}
return true;
}
/* draw a given stroke using same thickness and color for all points */
static void gpencil_draw_basic_stroke(tGPDfill *tgpf,
bGPDstroke *gps,
const float diff_mat[4][4],
const bool cyclic,
const float ink[4],
const int flag,
const float thershold,
const float thickness)
{
bGPDspoint *points = gps->points;
Material *ma = tgpf->mat;
MaterialGPencilStyle *gp_style = ma->gp_style;
int totpoints = gps->totpoints;
float fpt[3];
float col[4];
const float extend_col[4] = {0.0f, 1.0f, 1.0f, 1.0f};
const bool is_extend = (gps->flag & GP_STROKE_NOFILL) && (gps->flag & GP_STROKE_TAG);
if (!gpencil_stroke_is_drawable(tgpf, gps)) {
return;
}
if ((is_extend) && (!tgpf->is_render)) {
copy_v4_v4(col, extend_col);
}
else {
copy_v4_v4(col, ink);
}
/* if cyclic needs more vertex */
int cyclic_add = (cyclic) ? 1 : 0;
GPUVertFormat *format = immVertexFormat();
uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
uint color = GPU_vertformat_attr_add(format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_FLAT_COLOR);
/* draw stroke curve */
GPU_line_width((!is_extend) ? thickness : thickness * 2.0f);
immBeginAtMost(GPU_PRIM_LINE_STRIP, totpoints + cyclic_add);
const bGPDspoint *pt = points;
for (int i = 0; i < totpoints; i++, pt++) {
if (flag & GP_BRUSH_FILL_HIDE) {
float alpha = gp_style->stroke_rgba[3] * pt->strength;
CLAMP(alpha, 0.0f, 1.0f);
col[3] = alpha <= thershold ? 0.0f : 1.0f;
}
else {
col[3] = 1.0f;
}
/* set point */
immAttr4fv(color, col);
mul_v3_m4v3(fpt, diff_mat, &pt->x);
immVertex3fv(pos, fpt);
}
if (cyclic && totpoints > 2) {
/* draw line to first point to complete the cycle */
immAttr4fv(color, col);
mul_v3_m4v3(fpt, diff_mat, &points->x);
immVertex3fv(pos, fpt);
}
immEnd();
immUnbindProgram();
}
static void draw_mouse_position(tGPDfill *tgpf)
{
if (tgpf->gps_mouse == NULL) {
return;
}
uchar mouse_color[4] = {0, 0, 255, 255};
bGPDspoint *pt = &tgpf->gps_mouse->points[0];
float point_size = (tgpf->zoom == 1.0f) ? 4.0f * tgpf->fill_factor :
(0.5f * tgpf->zoom) + tgpf->fill_factor;
GPUVertFormat *format = immVertexFormat();
uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
uint col = GPU_vertformat_attr_add(format, "color", GPU_COMP_U8, 4, GPU_FETCH_INT_TO_FLOAT_UNIT);
/* Draw mouse click position in Blue. */
immBindBuiltinProgram(GPU_SHADER_3D_POINT_FIXED_SIZE_VARYING_COLOR);
GPU_point_size(point_size);
immBegin(GPU_PRIM_POINTS, 1);
immAttr4ubv(col, mouse_color);
immVertex3fv(pos, &pt->x);
immEnd();
immUnbindProgram();
}
/* Helper: Check if must skip the layer */
bool skip_layer_check(short fill_layer_mode, int gpl_active_index, int gpl_index)
{
bool skip = false;
switch (fill_layer_mode) {
case GP_FILL_GPLMODE_ACTIVE: {
if (gpl_index != gpl_active_index) {
skip = true;
}
break;
}
case GP_FILL_GPLMODE_ABOVE: {
if (gpl_index != gpl_active_index + 1) {
skip = true;
}
break;
}
case GP_FILL_GPLMODE_BELOW: {
if (gpl_index != gpl_active_index - 1) {
skip = true;
}
break;
}
case GP_FILL_GPLMODE_ALL_ABOVE: {
if (gpl_index <= gpl_active_index) {
skip = true;
}
break;
}
case GP_FILL_GPLMODE_ALL_BELOW: {
if (gpl_index >= gpl_active_index) {
skip = true;
}
break;
}
case GP_FILL_GPLMODE_VISIBLE:
default:
break;
}
return skip;
}
/* Loop all layers to draw strokes. */
static void gpencil_draw_datablock(tGPDfill *tgpf, const float ink[4])
{
Object *ob = tgpf->ob;
bGPdata *gpd = tgpf->gpd;
Brush *brush = tgpf->brush;
BrushGpencilSettings *brush_settings = brush->gpencil_settings;
ToolSettings *ts = tgpf->scene->toolsettings;
tGPDdraw tgpw;
tgpw.rv3d = tgpf->rv3d;
tgpw.depsgraph = tgpf->depsgraph;
tgpw.ob = ob;
tgpw.gpd = gpd;
tgpw.offsx = 0;
tgpw.offsy = 0;
tgpw.winx = tgpf->sizex;
tgpw.winy = tgpf->sizey;
tgpw.dflag = 0;
tgpw.disable_fill = 1;
tgpw.dflag |= (GP_DRAWFILLS_ONLY3D | GP_DRAWFILLS_NOSTATUS);
GPU_blend(GPU_BLEND_ALPHA);
bGPDlayer *gpl_active = BKE_gpencil_layer_active_get(gpd);
BLI_assert(gpl_active != NULL);
const int gpl_active_index = BLI_findindex(&gpd->layers, gpl_active);
BLI_assert(gpl_active_index >= 0);
/* Draw blue point where click with mouse. */
draw_mouse_position(tgpf);
LISTBASE_FOREACH (bGPDlayer *, gpl, &gpd->layers) {
/* do not draw layer if hidden */
if (gpl->flag & GP_LAYER_HIDE) {
continue;
}
/* calculate parent position */
BKE_gpencil_layer_transform_matrix_get(tgpw.depsgraph, ob, gpl, tgpw.diff_mat);
/* Decide if the strokes of layers are included or not depending on the layer mode.
* Cannot skip the layer because it can use boundary strokes and must be used. */
const int gpl_index = BLI_findindex(&gpd->layers, gpl);
bool skip = skip_layer_check(brush_settings->fill_layer_mode, gpl_active_index, gpl_index);
/* if active layer and no keyframe, create a new one */
if (gpl == tgpf->gpl) {
if ((gpl->actframe == NULL) || (gpl->actframe->framenum != tgpf->active_cfra)) {
short add_frame_mode;
if (IS_AUTOKEY_ON(tgpf->scene)) {
if (ts->gpencil_flags & GP_TOOL_FLAG_RETAIN_LAST) {
add_frame_mode = GP_GETFRAME_ADD_COPY;
}
else {
add_frame_mode = GP_GETFRAME_ADD_NEW;
}
}
else {
add_frame_mode = GP_GETFRAME_USE_PREV;
}
BKE_gpencil_layer_frame_get(gpl, tgpf->active_cfra, add_frame_mode);
}
}
/* get frame to draw */
bGPDframe *gpf = BKE_gpencil_layer_frame_get(gpl, tgpf->active_cfra, GP_GETFRAME_USE_PREV);
if (gpf == NULL) {
continue;
}
LISTBASE_FOREACH (bGPDstroke *, gps, &gpf->strokes) {
/* check if stroke can be drawn */
if ((gps->points == NULL) || (gps->totpoints < 2)) {
continue;
}
/* check if the color is visible */
MaterialGPencilStyle *gp_style = BKE_gpencil_material_settings(ob, gps->mat_nr + 1);
if ((gp_style == NULL) || (gp_style->flag & GP_MATERIAL_HIDE)) {
continue;
}
/* If the layer must be skipped, but the stroke is not boundary, skip stroke. */
if ((skip) && ((gps->flag & GP_STROKE_NOFILL) == 0)) {
continue;
}
tgpw.gps = gps;
tgpw.gpl = gpl;
tgpw.gpf = gpf;
tgpw.t_gpf = gpf;
tgpw.is_fill_stroke = (tgpf->fill_draw_mode == GP_FILL_DMODE_CONTROL) ? false : true;
/* Reduce thickness to avoid gaps. */
tgpw.lthick = gpl->line_change;
tgpw.opacity = 1.0;
copy_v4_v4(tgpw.tintcolor, ink);
tgpw.onion = true;
tgpw.custonion = true;
/* Normal strokes. */
if (ELEM(tgpf->fill_draw_mode, GP_FILL_DMODE_STROKE, GP_FILL_DMODE_BOTH)) {
if (gpencil_stroke_is_drawable(tgpf, gps) && ((gps->flag & GP_STROKE_TAG) == 0)) {
ED_gpencil_draw_fill(&tgpw);
}
}
/* 3D Lines with basic shapes and invisible lines */
if (ELEM(tgpf->fill_draw_mode, GP_FILL_DMODE_CONTROL, GP_FILL_DMODE_BOTH)) {
gpencil_draw_basic_stroke(tgpf,
gps,
tgpw.diff_mat,
gps->flag & GP_STROKE_CYCLIC,
ink,
tgpf->flag,
tgpf->fill_threshold,
1.0f);
}
}
}
GPU_blend(GPU_BLEND_NONE);
}
/* Draw strokes in off-screen buffer. */
static bool gpencil_render_offscreen(tGPDfill *tgpf)
{
bool is_ortho = false;
float winmat[4][4];
if (!tgpf->gpd) {
return false;
}
/* set temporary new size */
tgpf->bwinx = tgpf->region->winx;
tgpf->bwiny = tgpf->region->winy;
tgpf->brect = tgpf->region->winrct;
/* resize region */
tgpf->region->winrct.xmin = 0;
tgpf->region->winrct.ymin = 0;
tgpf->region->winrct.xmax = max_ii((int)tgpf->region->winx * tgpf->fill_factor, MIN_WINDOW_SIZE);
tgpf->region->winrct.ymax = max_ii((int)tgpf->region->winy * tgpf->fill_factor, MIN_WINDOW_SIZE);
tgpf->region->winx = (short)abs(tgpf->region->winrct.xmax - tgpf->region->winrct.xmin);
tgpf->region->winy = (short)abs(tgpf->region->winrct.ymax - tgpf->region->winrct.ymin);
/* save new size */
tgpf->sizex = (int)tgpf->region->winx;
tgpf->sizey = (int)tgpf->region->winy;
char err_out[256] = "unknown";
GPUOffScreen *offscreen = GPU_offscreen_create(
tgpf->sizex, tgpf->sizey, true, GPU_RGBA8, err_out);
if (offscreen == NULL) {
printf("GPencil - Fill - Unable to create fill buffer\n");
return false;
}
GPU_offscreen_bind(offscreen, true);
uint flag = IB_rectfloat;
ImBuf *ibuf = IMB_allocImBuf(tgpf->sizex, tgpf->sizey, 32, flag);
rctf viewplane;
float clip_start, clip_end;
is_ortho = ED_view3d_viewplane_get(tgpf->depsgraph,
tgpf->v3d,
tgpf->rv3d,
tgpf->sizex,
tgpf->sizey,
&viewplane,
&clip_start,
&clip_end,
NULL);
/* Rescale `viewplane` to fit all strokes. */
float width = viewplane.xmax - viewplane.xmin;
float height = viewplane.ymax - viewplane.ymin;
float width_new = width * tgpf->zoom;
float height_new = height * tgpf->zoom;
float scale_x = (width_new - width) / 2.0f;
float scale_y = (height_new - height) / 2.0f;
viewplane.xmin -= scale_x;
viewplane.xmax += scale_x;
viewplane.ymin -= scale_y;
viewplane.ymax += scale_y;
if (is_ortho) {
orthographic_m4(winmat,
viewplane.xmin,
viewplane.xmax,
viewplane.ymin,
viewplane.ymax,
-clip_end,
clip_end);
}
else {
perspective_m4(winmat,
viewplane.xmin,
viewplane.xmax,
viewplane.ymin,
viewplane.ymax,
clip_start,
clip_end);
}
GPU_matrix_push_projection();
GPU_matrix_identity_projection_set();
GPU_matrix_push();
GPU_matrix_identity_set();
GPU_depth_mask(true);
GPU_clear_color(0.0f, 0.0f, 0.0f, 0.0f);
GPU_clear_depth(1.0f);
ED_view3d_update_viewmat(
tgpf->depsgraph, tgpf->scene, tgpf->v3d, tgpf->region, NULL, winmat, NULL, true);
/* set for opengl */
GPU_matrix_projection_set(tgpf->rv3d->winmat);
GPU_matrix_set(tgpf->rv3d->viewmat);
/* draw strokes */
const float ink[4] = {1.0f, 0.0f, 0.0f, 1.0f};
gpencil_draw_datablock(tgpf, ink);
GPU_depth_mask(false);
GPU_matrix_pop_projection();
GPU_matrix_pop();
/* create a image to see result of template */
if (ibuf->rect_float) {
GPU_offscreen_read_pixels(offscreen, GPU_DATA_FLOAT, ibuf->rect_float);
}
else if (ibuf->rect) {
GPU_offscreen_read_pixels(offscreen, GPU_DATA_UBYTE, ibuf->rect);
}
if (ibuf->rect_float && ibuf->rect) {
IMB_rect_from_float(ibuf);
}
tgpf->ima = BKE_image_add_from_imbuf(tgpf->bmain, ibuf, "GP_fill");
tgpf->ima->id.tag |= LIB_TAG_DOIT;
BKE_image_release_ibuf(tgpf->ima, ibuf, NULL);
/* Switch back to window-system-provided frame-buffer. */
GPU_offscreen_unbind(offscreen, true);
GPU_offscreen_free(offscreen);
return true;
}
/* Return pixel data (RGBA) at index. */
static void get_pixel(const ImBuf *ibuf, const int idx, float r_col[4])
{
BLI_assert(ibuf->rect_float != NULL);
memcpy(r_col, &ibuf->rect_float[idx * 4], sizeof(float[4]));
}
/* Set pixel data (RGBA) at index. */
static void set_pixel(ImBuf *ibuf, int idx, const float col[4])
{
BLI_assert(ibuf->rect_float != NULL);
float *rrectf = &ibuf->rect_float[idx * 4];
copy_v4_v4(rrectf, col);
}
/* Helper: Check if one image row is empty. */
static bool is_row_filled(const ImBuf *ibuf, const int row_index)
{
float *row = &ibuf->rect_float[ibuf->x * 4 * row_index];
return (row[0] == 0.0f && memcmp(row, row + 1, ((ibuf->x * 4) - 1) * sizeof(float)) != 0);
}
/**
* Check if the size of the leak is narrow to determine if the stroke is closed
* this is used for strokes with small gaps between them to get a full fill
* and do not get a full screen fill.
*
* This function assumes that if the furthest pixel is occupied,
* the other pixels are occupied.
*
* \param ibuf: Image pixel data.
* \param maxpixel: Maximum index.
* \param limit: Limit of pixels to analyze.
* \param index: Index of current pixel.
* \param type: 0-Horizontal 1-Vertical.
*/
static bool is_leak_narrow(ImBuf *ibuf, const int maxpixel, int limit, int index, int type)
{
float rgba[4];
int pt;
bool t_a = false;
bool t_b = false;
const int extreme = limit - 1;
/* Horizontal leak (check vertical pixels)
* X
* X
* xB7
* X
* X
*/
if (type == LEAK_HORZ) {
/* pixels on top */
pt = index + (ibuf->x * extreme);
if (pt <= maxpixel) {
get_pixel(ibuf, pt, rgba);
if (rgba[0] == 1.0f) {
t_a = true;
}
}
else {
/* Edge of image. */
t_a = true;
}
/* pixels on bottom */
pt = index - (ibuf->x * extreme);
if (pt >= 0) {
get_pixel(ibuf, pt, rgba);
if (rgba[0] == 1.0f) {
t_b = true;
}
}
else {
/* Edge of image. */
t_b = true;
}
}
/* Vertical leak (check horizontal pixels)
*
* XXXxB7XX
*/
if (type == LEAK_VERT) {
/* get pixel range of the row */
int row = index / ibuf->x;
int lowpix = row * ibuf->x;
int higpix = lowpix + ibuf->x - 1;
/* pixels to right */
pt = index - extreme;
if (pt >= lowpix) {
get_pixel(ibuf, pt, rgba);
if (rgba[0] == 1.0f) {
t_a = true;
}
}
else {
t_a = true; /* Edge of image. */
}
/* pixels to left */
pt = index + extreme;
if (pt <= higpix) {
get_pixel(ibuf, pt, rgba);
if (rgba[0] == 1.0f) {
t_b = true;
}
}
else {
t_b = true; /* edge of image */
}
}
return (bool)(t_a && t_b);
}
/**
* Boundary fill inside strokes
* Fills the space created by a set of strokes using the stroke color as the boundary
* of the shape to fill.
*
* \param tgpf: Temporary fill data.
*/
static bool gpencil_boundaryfill_area(tGPDfill *tgpf)
{
ImBuf *ibuf;
float rgba[4];
void *lock;
const float fill_col[4] = {0.0f, 1.0f, 0.0f, 1.0f};
ibuf = BKE_image_acquire_ibuf(tgpf->ima, NULL, &lock);
const int maxpixel = (ibuf->x * ibuf->y) - 1;
bool border_contact = false;
BLI_Stack *stack = BLI_stack_new(sizeof(int), __func__);
/* Calculate index of the seed point using the position of the mouse looking
* for a blue pixel. */
int index = -1;
for (int i = 0; i < maxpixel; i++) {
get_pixel(ibuf, i, rgba);
if (rgba[2] == 1.0f) {
index = i;
break;
}
}
if ((index >= 0) && (index <= maxpixel)) {
if (!FILL_DEBUG) {
BLI_stack_push(stack, &index);
}
}
/**
* The fill use a stack to save the pixel list instead of the common recursive
* 4-contact point method.
* The problem with recursive calls is that for big fill areas, we can get max limit
* of recursive calls and STACK_OVERFLOW error.
*
* The 4-contact point analyze the pixels to the left, right, bottom and top
* <pre>
* -----------
* | X |
* | XoX |
* | X |
* -----------
* </pre>
*/
while (!BLI_stack_is_empty(stack)) {
int v;
BLI_stack_pop(stack, &v);
get_pixel(ibuf, v, rgba);
/* Determine if the flood contacts with external borders. */
if (rgba[3] == 0.5f) {
border_contact = true;
}
/* check if no border(red) or already filled color(green) */
if ((rgba[0] != 1.0f) && (rgba[1] != 1.0f)) {
/* fill current pixel with green */
set_pixel(ibuf, v, fill_col);
/* add contact pixels */
/* pixel left */
if (v - 1 >= 0) {
index = v - 1;
if (!is_leak_narrow(ibuf, maxpixel, tgpf->fill_leak, v, LEAK_HORZ)) {
BLI_stack_push(stack, &index);
}
}
/* pixel right */
if (v + 1 <= maxpixel) {
index = v + 1;
if (!is_leak_narrow(ibuf, maxpixel, tgpf->fill_leak, v, LEAK_HORZ)) {
BLI_stack_push(stack, &index);
}
}
/* pixel top */
if (v + ibuf->x <= maxpixel) {
index = v + ibuf->x;
if (!is_leak_narrow(ibuf, maxpixel, tgpf->fill_leak, v, LEAK_VERT)) {
BLI_stack_push(stack, &index);
}
}
/* pixel bottom */
if (v - ibuf->x >= 0) {
index = v - ibuf->x;
if (!is_leak_narrow(ibuf, maxpixel, tgpf->fill_leak, v, LEAK_VERT)) {
BLI_stack_push(stack, &index);
}
}
}
}
/* release ibuf */
BKE_image_release_ibuf(tgpf->ima, ibuf, lock);
tgpf->ima->id.tag |= LIB_TAG_DOIT;
/* free temp stack data */
BLI_stack_free(stack);
return border_contact;
}
/* Set a border to create image limits. */
static void gpencil_set_borders(tGPDfill *tgpf, const bool transparent)
{
ImBuf *ibuf;
void *lock;
const float fill_col[2][4] = {{1.0f, 0.0f, 0.0f, 0.5f}, {0.0f, 0.0f, 0.0f, 0.0f}};
ibuf = BKE_image_acquire_ibuf(tgpf->ima, NULL, &lock);
int idx;
int pixel = 0;
const int coloridx = transparent ? 0 : 1;
/* horizontal lines */
for (idx = 0; idx < ibuf->x; idx++) {
/* bottom line */
set_pixel(ibuf, idx, fill_col[coloridx]);
/* top line */
pixel = idx + (ibuf->x * (ibuf->y - 1));
set_pixel(ibuf, pixel, fill_col[coloridx]);
}
/* vertical lines */
for (idx = 0; idx < ibuf->y; idx++) {
/* left line */
set_pixel(ibuf, ibuf->x * idx, fill_col[coloridx]);
/* right line */
pixel = ibuf->x * idx + (ibuf->x - 1);
set_pixel(ibuf, pixel, fill_col[coloridx]);
}
/* release ibuf */
BKE_image_release_ibuf(tgpf->ima, ibuf, lock);
tgpf->ima->id.tag |= LIB_TAG_DOIT;
}
/* Invert image to paint inverse area. */
static void gpencil_invert_image(tGPDfill *tgpf)
{
ImBuf *ibuf;
void *lock;
const float fill_col[3][4] = {
{1.0f, 0.0f, 0.0f, 1.0f}, {0.0f, 1.0f, 0.0f, 1.0f}, {0.0f, 0.0f, 0.0f, 0.0f}};
ibuf = BKE_image_acquire_ibuf(tgpf->ima, NULL, &lock);
const int maxpixel = (ibuf->x * ibuf->y) - 1;
for (int v = maxpixel; v != 0; v--) {
float color[4];
get_pixel(ibuf, v, color);
/* Green->Red. */
if (color[1] == 1.0f) {
set_pixel(ibuf, v, fill_col[0]);
}
/* Red->Green */
else if (color[0] == 1.0f) {
set_pixel(ibuf, v, fill_col[1]);
}
else {
/* Set to Transparent. */
set_pixel(ibuf, v, fill_col[2]);
}
}
/* release ibuf */
BKE_image_release_ibuf(tgpf->ima, ibuf, lock);
tgpf->ima->id.tag |= LIB_TAG_DOIT;
}
/* Mark and clear processed areas. */
static void gpencil_erase_processed_area(tGPDfill *tgpf)
{
ImBuf *ibuf;
void *lock;
const float blue_col[4] = {0.0f, 0.0f, 1.0f, 1.0f};
const float clear_col[4] = {1.0f, 0.0f, 0.0f, 1.0f};
tGPspoint *point2D;
if (tgpf->sbuffer_used == 0) {
return;
}
ibuf = BKE_image_acquire_ibuf(tgpf->ima, NULL, &lock);
point2D = (tGPspoint *)tgpf->sbuffer;
/* First set in blue the perimeter. */
for (int i = 0; i < tgpf->sbuffer_used && point2D; i++, point2D++) {
int image_idx = ibuf->x * (int)point2D->m_xy[1] + (int)point2D->m_xy[0];
set_pixel(ibuf, image_idx, blue_col);
}
/* Second, clean by lines any pixel between blue pixels. */
float rgba[4];
for (int idy = 0; idy < ibuf->y; idy++) {
int init = -1;
int end = -1;
for (int idx = 0; idx < ibuf->x; idx++) {
int image_idx = ibuf->x * idy + idx;
get_pixel(ibuf, image_idx, rgba);
/* Blue. */
if (rgba[2] == 1.0f) {
if (init < 0) {
init = image_idx;
}
else {
end = image_idx;
}
}
/* Red. */
else if (rgba[0] == 1.0f) {
if (init > -1) {
for (int i = init; i <= max_ii(init, end); i++) {
set_pixel(ibuf, i, clear_col);
}
init = -1;
end = -1;
}
}
}
/* Check last segment. */
if (init > -1) {
for (int i = init; i <= max_ii(init, end); i++) {
set_pixel(ibuf, i, clear_col);
}
set_pixel(ibuf, init, clear_col);
}
}
/* release ibuf */
BKE_image_release_ibuf(tgpf->ima, ibuf, lock);
tgpf->ima->id.tag |= LIB_TAG_DOIT;
}
/**
* Naive dilate
*
* Expand green areas into enclosing red areas.
* Using stack prevents creep when replacing colors directly.
* <pre>
* -----------
* XXXXXXX
* XoooooX
* XXooXXX
* XXXX
* -----------
* </pre>
*/
static bool dilate_shape(ImBuf *ibuf)
{
#define IS_RED (color[0] == 1.0f)
#define IS_GREEN (color[1] == 1.0f)
bool done = false;
BLI_Stack *stack = BLI_stack_new(sizeof(int), __func__);
const float green[4] = {0.0f, 1.0f, 0.0f, 1.0f};
const int max_size = (ibuf->x * ibuf->y) - 1;
/* detect pixels and expand into red areas */
for (int row = 0; row < ibuf->y; row++) {
if (!is_row_filled(ibuf, row)) {
continue;
}
int maxpixel = (ibuf->x * (row + 1)) - 1;
int minpixel = ibuf->x * row;
for (int v = maxpixel; v != minpixel; v--) {
float color[4];
int index;
get_pixel(ibuf, v, color);
if (IS_GREEN) {
int tp = 0;
int bm = 0;
int lt = 0;
int rt = 0;
/* pixel left */
if (v - 1 >= 0) {
index = v - 1;
get_pixel(ibuf, index, color);
if (IS_RED) {
BLI_stack_push(stack, &index);
lt = index;
}
}
/* pixel right */
if (v + 1 <= maxpixel) {
index = v + 1;
get_pixel(ibuf, index, color);
if (IS_RED) {
BLI_stack_push(stack, &index);
rt = index;
}
}
/* pixel top */
if (v + ibuf->x <= max_size) {
index = v + ibuf->x;
get_pixel(ibuf, index, color);
if (IS_RED) {
BLI_stack_push(stack, &index);
tp = index;
}
}
/* pixel bottom */
if (v - ibuf->x >= 0) {
index = v - ibuf->x;
get_pixel(ibuf, index, color);
if (IS_RED) {
BLI_stack_push(stack, &index);
bm = index;
}
}
/* pixel top-left */
if (tp && lt) {
index = tp - 1;
get_pixel(ibuf, index, color);
if (IS_RED) {
BLI_stack_push(stack, &index);
}
}
/* pixel top-right */
if (tp && rt) {
index = tp + 1;
get_pixel(ibuf, index, color);
if (IS_RED) {
BLI_stack_push(stack, &index);
}
}
/* pixel bottom-left */
if (bm && lt) {
index = bm - 1;
get_pixel(ibuf, index, color);
if (IS_RED) {
BLI_stack_push(stack, &index);
}
}
/* pixel bottom-right */
if (bm && rt) {
index = bm + 1;
get_pixel(ibuf, index, color);
if (IS_RED) {
BLI_stack_push(stack, &index);
}
}
}
}
}
/* set dilated pixels */
while (!BLI_stack_is_empty(stack)) {
int v;
BLI_stack_pop(stack, &v);
set_pixel(ibuf, v, green);
done = true;
}
BLI_stack_free(stack);
return done;
#undef IS_RED
#undef IS_GREEN
}
/**
* Contract
*
* Contract green areas to scale down the size.
* Using stack prevents creep when replacing colors directly.
*/
static bool contract_shape(ImBuf *ibuf)
{
#define IS_GREEN (color[1] == 1.0f)
#define IS_NOT_GREEN (color[1] != 1.0f)
bool done = false;
BLI_Stack *stack = BLI_stack_new(sizeof(int), __func__);
const float clear[4] = {0.0f, 0.0f, 0.0f, 0.0f};
const int max_size = (ibuf->x * ibuf->y) - 1;
/* detect pixels and expand into red areas */
for (int row = 0; row < ibuf->y; row++) {
if (!is_row_filled(ibuf, row)) {
continue;
}
int maxpixel = (ibuf->x * (row + 1)) - 1;
int minpixel = ibuf->x * row;
for (int v = maxpixel; v != minpixel; v--) {
float color[4];
get_pixel(ibuf, v, color);
if (IS_GREEN) {
/* pixel left */
if (v - 1 >= 0) {
get_pixel(ibuf, v - 1, color);
if (IS_NOT_GREEN) {
BLI_stack_push(stack, &v);
continue;
}
}
/* pixel right */
if (v + 1 <= maxpixel) {
get_pixel(ibuf, v + 1, color);
if (IS_NOT_GREEN) {
BLI_stack_push(stack, &v);
continue;
}
}
/* pixel top */
if (v + ibuf->x <= max_size) {
get_pixel(ibuf, v + ibuf->x, color);
if (IS_NOT_GREEN) {
BLI_stack_push(stack, &v);
continue;
}
}
/* pixel bottom */
if (v - ibuf->x >= 0) {
get_pixel(ibuf, v - ibuf->x, color);
if (IS_NOT_GREEN) {
BLI_stack_push(stack, &v);
continue;
}
}
}
}
}
/* Clear pixels. */
while (!BLI_stack_is_empty(stack)) {
int v;
BLI_stack_pop(stack, &v);
set_pixel(ibuf, v, clear);
done = true;
}
BLI_stack_free(stack);
return done;
#undef IS_GREEN
#undef IS_NOT_GREEN
}
/* Get the outline points of a shape using Moore Neighborhood algorithm
*
* This is a Blender customized version of the general algorithm described
* in https://en.wikipedia.org/wiki/Moore_neighborhood
*/
static void gpencil_get_outline_points(tGPDfill *tgpf, const bool dilate)
{
ImBuf *ibuf;
Brush *brush = tgpf->brush;
float rgba[4];
void *lock;
int v[2];
int boundary_co[2];
int start_co[2];
int first_co[2] = {-1, -1};
int backtracked_co[2];
int current_check_co[2];
int prev_check_co[2];
int backtracked_offset[1][2] = {{0, 0}};
bool first_pixel = false;
bool start_found = false;
const int NEIGHBOR_COUNT = 8;
const int offset[8][2] = {
{-1, -1},
{0, -1},
{1, -1},
{1, 0},
{1, 1},
{0, 1},
{-1, 1},
{-1, 0},
};
tgpf->stack = BLI_stack_new(sizeof(int[2]), __func__);
ibuf = BKE_image_acquire_ibuf(tgpf->ima, NULL, &lock);
int imagesize = ibuf->x * ibuf->y;
/* Dilate or contract. */
if (dilate) {
for (int i = 0; i < abs(brush->gpencil_settings->dilate_pixels); i++) {
if (brush->gpencil_settings->dilate_pixels > 0) {
dilate_shape(ibuf);
}
else {
contract_shape(ibuf);
}
}
}
for (int idx = imagesize - 1; idx != 0; idx--) {
get_pixel(ibuf, idx, rgba);
if (rgba[1] == 1.0f) {
boundary_co[0] = idx % ibuf->x;
boundary_co[1] = idx / ibuf->x;
copy_v2_v2_int(start_co, boundary_co);
backtracked_co[0] = (idx - 1) % ibuf->x;
backtracked_co[1] = (idx - 1) / ibuf->x;
backtracked_offset[0][0] = backtracked_co[0] - boundary_co[0];
backtracked_offset[0][1] = backtracked_co[1] - boundary_co[1];
copy_v2_v2_int(prev_check_co, start_co);
BLI_stack_push(tgpf->stack, &boundary_co);
start_found = true;
break;
}
}
while (start_found) {
int cur_back_offset = -1;
for (int i = 0; i < NEIGHBOR_COUNT; i++) {
if (backtracked_offset[0][0] == offset[i][0] && backtracked_offset[0][1] == offset[i][1]) {
/* Finding the back-tracked pixel offset index */
cur_back_offset = i;
break;
}
}
int loop = 0;
while (loop < (NEIGHBOR_COUNT - 1) && cur_back_offset != -1) {
int offset_idx = (cur_back_offset + 1) % NEIGHBOR_COUNT;
current_check_co[0] = boundary_co[0] + offset[offset_idx][0];
current_check_co[1] = boundary_co[1] + offset[offset_idx][1];
int image_idx = ibuf->x * current_check_co[1] + current_check_co[0];
get_pixel(ibuf, image_idx, rgba);
/* find next boundary pixel */
if (rgba[1] == 1.0f) {
copy_v2_v2_int(boundary_co, current_check_co);
copy_v2_v2_int(backtracked_co, prev_check_co);
backtracked_offset[0][0] = backtracked_co[0] - boundary_co[0];
backtracked_offset[0][1] = backtracked_co[1] - boundary_co[1];
BLI_stack_push(tgpf->stack, &boundary_co);
break;
}
copy_v2_v2_int(prev_check_co, current_check_co);
cur_back_offset++;
loop++;
}
/* Current pixel is equal to starting or first pixel. */
if ((boundary_co[0] == start_co[0] && boundary_co[1] == start_co[1]) ||
(boundary_co[0] == first_co[0] && boundary_co[1] == first_co[1])) {
BLI_stack_pop(tgpf->stack, &v);
break;
}
if (!first_pixel) {
first_pixel = true;
copy_v2_v2_int(first_co, boundary_co);
}
}
/* release ibuf */
BKE_image_release_ibuf(tgpf->ima, ibuf, lock);
}
/* Get z-depth array to reproject on surface. */
static void gpencil_get_depth_array(tGPDfill *tgpf)
{
tGPspoint *ptc;
ToolSettings *ts = tgpf->scene->toolsettings;
int totpoints = tgpf->sbuffer_used;
int i = 0;
if (totpoints == 0) {
return;
}
/* for surface sketching, need to set the right OpenGL context stuff so that
* the conversions will project the values correctly...
*/
if (ts->gpencil_v3d_align & GP_PROJECT_DEPTH_VIEW) {
/* need to restore the original projection settings before packing up */
view3d_region_operator_needs_opengl(tgpf->win, tgpf->region);
ED_view3d_depth_override(
tgpf->depsgraph, tgpf->region, tgpf->v3d, NULL, V3D_DEPTH_NO_GPENCIL, &tgpf->depths);
/* Since strokes are so fine, when using their depth we need a margin
* otherwise they might get missed. */
int depth_margin = 0;
/* get an array of depths, far depths are blended */
int mval_prev[2] = {0};
int interp_depth = 0;
int found_depth = 0;
const ViewDepths *depths = tgpf->depths;
tgpf->depth_arr = MEM_mallocN(sizeof(float) * totpoints, "depth_points");
for (i = 0, ptc = tgpf->sbuffer; i < totpoints; i++, ptc++) {
int mval_i[2];
round_v2i_v2fl(mval_i, ptc->m_xy);
if ((ED_view3d_depth_read_cached(depths, mval_i, depth_margin, tgpf->depth_arr + i) == 0) &&
(i && (ED_view3d_depth_read_cached_seg(
depths, mval_i, mval_prev, depth_margin + 1, tgpf->depth_arr + i) == 0))) {
interp_depth = true;
}
else {
found_depth = true;
}
copy_v2_v2_int(mval_prev, mval_i);
}
if (found_depth == false) {
/* Sigh! not much we can do here. Ignore depth in this case. */
for (i = totpoints - 1; i >= 0; i--) {
tgpf->depth_arr[i] = 0.9999f;
}
}
else {
if (interp_depth) {
interp_sparse_array(tgpf->depth_arr, totpoints, DEPTH_INVALID);
}
}
}
}
/* create array of points using stack as source */
static int gpencil_points_from_stack(tGPDfill *tgpf)
{
tGPspoint *point2D;
int totpoints = BLI_stack_count(tgpf->stack);
if (totpoints == 0) {
return 0;
}
tgpf->sbuffer_used = (short)totpoints;
tgpf->sbuffer = MEM_callocN(sizeof(tGPspoint) * totpoints, __func__);
point2D = tgpf->sbuffer;
while (!BLI_stack_is_empty(tgpf->stack)) {
int v[2];
BLI_stack_pop(tgpf->stack, &v);
copy_v2fl_v2i(point2D->m_xy, v);
/* shift points to center of pixel */
add_v2_fl(point2D->m_xy, 0.5f);
point2D->pressure = 1.0f;
point2D->strength = 1.0f;
point2D->time = 0.0f;
point2D++;
}
return totpoints;
}
/* create a grease pencil stroke using points in buffer */
static void gpencil_stroke_from_buffer(tGPDfill *tgpf)
{
ToolSettings *ts = tgpf->scene->toolsettings;
const char align_flag = ts->gpencil_v3d_align;
const bool is_depth = (bool)(align_flag & (GP_PROJECT_DEPTH_VIEW | GP_PROJECT_DEPTH_STROKE));
const bool is_lock_axis_view = (bool)(ts->gp_sculpt.lock_axis == 0);
const bool is_camera = is_lock_axis_view && (tgpf->rv3d->persp == RV3D_CAMOB) && (!is_depth);
Brush *brush = BKE_paint_brush(&ts->gp_paint->paint);
if (brush == NULL) {
return;
}
bGPDspoint *pt;
MDeformVert *dvert = NULL;
tGPspoint *point2D;
if (tgpf->sbuffer_used == 0) {
return;
}
/* Set as done. */
tgpf->done = true;
/* Get frame or create a new one. */
tgpf->gpf = BKE_gpencil_layer_frame_get(tgpf->gpl,
tgpf->active_cfra,
IS_AUTOKEY_ON(tgpf->scene) ? GP_GETFRAME_ADD_NEW :
GP_GETFRAME_USE_PREV);
/* Set frame as selected. */
tgpf->gpf->flag |= GP_FRAME_SELECT;
/* create new stroke */
bGPDstroke *gps = MEM_callocN(sizeof(bGPDstroke), "bGPDstroke");
gps->thickness = brush->size;
gps->fill_opacity_fac = 1.0f;
gps->hardeness = brush->gpencil_settings->hardeness;
copy_v2_v2(gps->aspect_ratio, brush->gpencil_settings->aspect_ratio);
gps->inittime = 0.0f;
/* Apply the vertex color to fill. */
ED_gpencil_fill_vertex_color_set(ts, brush, gps);
/* the polygon must be closed, so enabled cyclic */
gps->flag |= GP_STROKE_CYCLIC;
gps->flag |= GP_STROKE_3DSPACE;
gps->mat_nr = BKE_gpencil_object_material_get_index_from_brush(tgpf->ob, brush);
if (gps->mat_nr < 0) {
if (tgpf->ob->actcol - 1 < 0) {
gps->mat_nr = 0;
}
else {
gps->mat_nr = tgpf->ob->actcol - 1;
}
}
/* allocate memory for storage points */
gps->totpoints = tgpf->sbuffer_used;
gps->points = MEM_callocN(sizeof(bGPDspoint) * tgpf->sbuffer_used, "gp_stroke_points");
/* add stroke to frame */
if ((ts->gpencil_flags & GP_TOOL_FLAG_PAINT_ONBACK) || (tgpf->on_back == true)) {
BLI_addhead(&tgpf->gpf->strokes, gps);
}
else {
BLI_addtail(&tgpf->gpf->strokes, gps);
}
/* add points */
pt = gps->points;
point2D = (tGPspoint *)tgpf->sbuffer;
const int def_nr = tgpf->gpd->vertex_group_active_index - 1;
const bool have_weight = (bool)BLI_findlink(&tgpf->gpd->vertex_group_names, def_nr);
if ((ts->gpencil_flags & GP_TOOL_FLAG_CREATE_WEIGHTS) && (have_weight)) {
BKE_gpencil_dvert_ensure(gps);
dvert = gps->dvert;
}
for (int i = 0; i < tgpf->sbuffer_used && point2D; i++, point2D++, pt++) {
/* convert screen-coordinates to 3D coordinates */
gpencil_stroke_convertcoords_tpoint(tgpf->scene,
tgpf->region,
tgpf->ob,
point2D,
tgpf->depth_arr ? tgpf->depth_arr + i : NULL,
&pt->x);
pt->pressure = 1.0f;
pt->strength = 1.0f;
pt->time = 0.0f;
/* Apply the vertex color to point. */
ED_gpencil_point_vertex_color_set(ts, brush, pt, NULL);
if ((ts->gpencil_flags & GP_TOOL_FLAG_CREATE_WEIGHTS) && (have_weight)) {
MDeformWeight *dw = BKE_defvert_ensure_index(dvert, def_nr);
if (dw) {
dw->weight = ts->vgroup_weight;
}
dvert++;
}
else {
if (dvert != NULL) {
dvert->totweight = 0;
dvert->dw = NULL;
dvert++;
}
}
}
/* smooth stroke */
float reduce = 0.0f;
float smoothfac = 1.0f;
for (int r = 0; r < 1; r++) {
for (int i = 0; i < gps->totpoints; i++) {
BKE_gpencil_stroke_smooth_point(gps, i, smoothfac - reduce, false);
}
reduce += 0.25f; /* reduce the factor */
}
/* if axis locked, reproject to plane locked */
if ((tgpf->lock_axis > GP_LOCKAXIS_VIEW) &&
((ts->gpencil_v3d_align & GP_PROJECT_DEPTH_VIEW) == 0)) {
float origin[3];
ED_gpencil_drawing_reference_get(tgpf->scene, tgpf->ob, ts->gpencil_v3d_align, origin);
ED_gpencil_project_stroke_to_plane(
tgpf->scene, tgpf->ob, tgpf->rv3d, tgpf->gpl, gps, origin, tgpf->lock_axis - 1);
}
/* if parented change position relative to parent object */
for (int a = 0; a < tgpf->sbuffer_used; a++) {
pt = &gps->points[a];
gpencil_apply_parent_point(tgpf->depsgraph, tgpf->ob, tgpf->gpl, pt);
}
/* If camera view or view projection, reproject flat to view to avoid perspective effect. */
if ((!is_depth) && (((align_flag & GP_PROJECT_VIEWSPACE) && is_lock_axis_view) || (is_camera))) {
ED_gpencil_project_stroke_to_view(tgpf->C, tgpf->gpl, gps);
}
/* simplify stroke */
for (int b = 0; b < tgpf->fill_simplylvl; b++) {
BKE_gpencil_stroke_simplify_fixed(tgpf->gpd, gps);
}
/* Calc geometry data. */
BKE_gpencil_stroke_geometry_update(tgpf->gpd, gps);
}
/* ----------------------- */
/* Drawing */
/* Helper: Draw status message while the user is running the operator */
static void gpencil_fill_status_indicators(bContext *C)
{
const char *status_str = TIP_("Fill: ESC/RMB cancel, LMB Fill, Shift Draw on Back");
ED_workspace_status_text(C, status_str);
}
/* draw boundary lines to see fill limits */
static void gpencil_draw_boundary_lines(const bContext *UNUSED(C), tGPDfill *tgpf)
{
if (!tgpf->gpd) {
return;
}
const float ink[4] = {1.0f, 0.0f, 0.0f, 1.0f};
gpencil_draw_datablock(tgpf, ink);
}
/* Drawing callback for modal operator in 3d mode */
static void gpencil_fill_draw_3d(const bContext *C, ARegion *UNUSED(region), void *arg)
{
tGPDfill *tgpf = (tGPDfill *)arg;
/* Draw only in the region that originated operator. This is required for multi-window. */
ARegion *region = CTX_wm_region(C);
if (region != tgpf->region) {
return;
}
gpencil_draw_boundary_lines(C, tgpf);
}
/* check if context is suitable for filling */
static bool gpencil_fill_poll(bContext *C)
{
Object *obact = CTX_data_active_object(C);
if (ED_operator_regionactive(C)) {
ScrArea *area = CTX_wm_area(C);
if (area->spacetype == SPACE_VIEW3D) {
if ((obact == NULL) || (obact->type != OB_GPENCIL) ||
(obact->mode != OB_MODE_PAINT_GPENCIL)) {
return false;
}
return true;
}
CTX_wm_operator_poll_msg_set(C, "Active region not valid for filling operator");
return false;
}
CTX_wm_operator_poll_msg_set(C, "Active region not set");
return false;
}
/* Allocate memory and initialize values */
static tGPDfill *gpencil_session_init_fill(bContext *C, wmOperator *op)
{
tGPDfill *tgpf = MEM_callocN(sizeof(tGPDfill), "GPencil Fill Data");
/* define initial values */
ToolSettings *ts = CTX_data_tool_settings(C);
bGPdata *gpd = CTX_data_gpencil_data(C);
Main *bmain = CTX_data_main(C);
Scene *scene = CTX_data_scene(C);
/* set current scene and window info */
tgpf->C = C;
tgpf->bmain = CTX_data_main(C);
tgpf->scene = scene;
tgpf->ob = CTX_data_active_object(C);
tgpf->area = CTX_wm_area(C);
tgpf->region = CTX_wm_region(C);
tgpf->rv3d = tgpf->region->regiondata;
tgpf->v3d = tgpf->area->spacedata.first;
tgpf->depsgraph = CTX_data_ensure_evaluated_depsgraph(C);
tgpf->win = CTX_wm_window(C);
tgpf->active_cfra = CFRA;
tgpf->reports = op->reports;
/* Setup space conversions. */
gpencil_point_conversion_init(C, &tgpf->gsc);
tgpf->zoom = 1.0f;
/* set GP datablock */
tgpf->gpd = gpd;
tgpf->gpl = BKE_gpencil_layer_active_get(gpd);
if (tgpf->gpl == NULL) {
tgpf->gpl = BKE_gpencil_layer_addnew(tgpf->gpd, DATA_("GP_Layer"), true, false);
}
tgpf->lock_axis = ts->gp_sculpt.lock_axis;
tgpf->oldkey = -1;
tgpf->is_render = false;
tgpf->sbuffer_used = 0;
tgpf->sbuffer = NULL;
tgpf->depth_arr = NULL;
/* save filling parameters */
Brush *brush = BKE_paint_brush(&ts->gp_paint->paint);
tgpf->brush = brush;
tgpf->flag = brush->gpencil_settings->flag;
tgpf->fill_threshold = brush->gpencil_settings->fill_threshold;
tgpf->fill_simplylvl = brush->gpencil_settings->fill_simplylvl;
tgpf->fill_draw_mode = brush->gpencil_settings->fill_draw_mode;
tgpf->fill_extend_fac = brush->gpencil_settings->fill_extend_fac;
tgpf->fill_factor = max_ff(GPENCIL_MIN_FILL_FAC,
min_ff(brush->gpencil_settings->fill_factor, GPENCIL_MAX_FILL_FAC));
tgpf->fill_leak = (int)ceil((float)brush->gpencil_settings->fill_leak * tgpf->fill_factor);
int totcol = tgpf->ob->totcol;
/* get color info */
Material *ma = BKE_gpencil_object_material_ensure_from_active_input_brush(
bmain, tgpf->ob, brush);
tgpf->mat = ma;
/* Untag strokes to be sure nothing is pending due any canceled process. */
LISTBASE_FOREACH (bGPDlayer *, gpl, &tgpf->gpd->layers) {
LISTBASE_FOREACH (bGPDframe *, gpf, &gpl->frames) {
LISTBASE_FOREACH (bGPDstroke *, gps, &gpf->strokes) {
gps->flag &= ~GP_STROKE_TAG;
}
}
}
/* check whether the material was newly added */
if (totcol != tgpf->ob->totcol) {
WM_event_add_notifier(C, NC_SPACE | ND_SPACE_PROPERTIES, NULL);
}
/* init undo */
gpencil_undo_init(tgpf->gpd);
/* return context data for running operator */
return tgpf;
}
/* end operator */
static void gpencil_fill_exit(bContext *C, wmOperator *op)
{
Object *ob = CTX_data_active_object(C);
/* clear undo stack */
gpencil_undo_finish();
/* restore cursor to indicate end of fill */
WM_cursor_modal_restore(CTX_wm_window(C));
tGPDfill *tgpf = op->customdata;
/* don't assume that operator data exists at all */
if (tgpf) {
/* clear status message area */
ED_workspace_status_text(C, NULL);
MEM_SAFE_FREE(tgpf->sbuffer);
MEM_SAFE_FREE(tgpf->depth_arr);
/* Remove any temp stroke. */
gpencil_delete_temp_stroke_extension(tgpf, true);
/* remove drawing handler */
if (tgpf->draw_handle_3d) {
ED_region_draw_cb_exit(tgpf->region->type, tgpf->draw_handle_3d);
}
/* Remove depth buffer in cache. */
if (tgpf->depths) {
ED_view3d_depths_free(tgpf->depths);
}
/* finally, free memory used by temp data */
MEM_freeN(tgpf);
}
/* clear pointer */
op->customdata = NULL;
/* drawing batch cache is dirty now */
if ((ob) && (ob->type == OB_GPENCIL) && (ob->data)) {
bGPdata *gpd2 = ob->data;
DEG_id_tag_update(&gpd2->id, ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY);
gpd2->flag |= GP_DATA_CACHE_IS_DIRTY;
}
WM_event_add_notifier(C, NC_GPENCIL | NA_EDITED, NULL);
}
static void gpencil_fill_cancel(bContext *C, wmOperator *op)
{
/* this is just a wrapper around exit() */
gpencil_fill_exit(C, op);
}
/* Init: Allocate memory and set init values */
static int gpencil_fill_init(bContext *C, wmOperator *op)
{
tGPDfill *tgpf;
/* cannot paint in locked layer */
bGPdata *gpd = CTX_data_gpencil_data(C);
bGPDlayer *gpl = BKE_gpencil_layer_active_get(gpd);
if ((gpl) && (gpl->flag & GP_LAYER_LOCKED)) {
return 0;
}
/* check context */
tgpf = op->customdata = gpencil_session_init_fill(C, op);
if (tgpf == NULL) {
/* something wasn't set correctly in context */
gpencil_fill_exit(C, op);
return 0;
}
/* everything is now setup ok */
return 1;
}
/* start of interactive part of operator */
static int gpencil_fill_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
Object *ob = CTX_data_active_object(C);
ToolSettings *ts = CTX_data_tool_settings(C);
Brush *brush = BKE_paint_brush(&ts->gp_paint->paint);
tGPDfill *tgpf = NULL;
/* Fill tool needs a material (cannot use default material) */
bool valid = true;
if ((brush) && (brush->gpencil_settings->flag & GP_BRUSH_MATERIAL_PINNED)) {
if (brush->gpencil_settings->material == NULL) {
valid = false;
}
}
else {
if (BKE_object_material_get(ob, ob->actcol) == NULL) {
valid = false;
}
}
if (!valid) {
BKE_report(op->reports, RPT_ERROR, "Fill tool needs active material");
return OPERATOR_CANCELLED;
}
/* try to initialize context data needed */
if (!gpencil_fill_init(C, op)) {
gpencil_fill_exit(C, op);
if (op->customdata) {
MEM_freeN(op->customdata);
}
return OPERATOR_CANCELLED;
}
tgpf = op->customdata;
/* Enable custom drawing handlers to show help lines */
const bool do_extend = (tgpf->fill_extend_fac > 0.0f);
const bool help_lines = ((tgpf->flag & GP_BRUSH_FILL_SHOW_HELPLINES) ||
((tgpf->flag & GP_BRUSH_FILL_SHOW_EXTENDLINES) && (do_extend)));
if (help_lines) {
tgpf->draw_handle_3d = ED_region_draw_cb_activate(
tgpf->region->type, gpencil_fill_draw_3d, tgpf, REGION_DRAW_POST_VIEW);
}
WM_cursor_modal_set(CTX_wm_window(C), WM_CURSOR_PAINT_BRUSH);
gpencil_fill_status_indicators(C);
DEG_id_tag_update(&tgpf->gpd->id, ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_GPENCIL | NA_EDITED, NULL);
/* Add a modal handler for this operator. */
WM_event_add_modal_handler(C, op);
return OPERATOR_RUNNING_MODAL;
}
/* Helper: Calc the maximum bounding box size of strokes to get the zoom level of the viewport.
* For each stroke, the 2D projected bounding box is calculated and using this data, the total
* object bounding box (all strokes) is calculated. */
static void gpencil_zoom_level_set(tGPDfill *tgpf)
{
Brush *brush = tgpf->brush;
if (brush->gpencil_settings->flag & GP_BRUSH_FILL_FIT_DISABLE) {
tgpf->zoom = 1.0f;
return;
}
Object *ob = tgpf->ob;
bGPdata *gpd = tgpf->gpd;
BrushGpencilSettings *brush_settings = tgpf->brush->gpencil_settings;
bGPDlayer *gpl_active = BKE_gpencil_layer_active_get(gpd);
BLI_assert(gpl_active != NULL);
const int gpl_active_index = BLI_findindex(&gpd->layers, gpl_active);
BLI_assert(gpl_active_index >= 0);
/* Init maximum boundbox size. */
rctf rect_max;
const float winx_half = tgpf->region->winx / 2.0f;
const float winy_half = tgpf->region->winy / 2.0f;
BLI_rctf_init(&rect_max,
0.0f - winx_half,
tgpf->region->winx + winx_half,
0.0f - winy_half,
tgpf->region->winy + winy_half);
float objectbox_min[2], objectbox_max[2];
INIT_MINMAX2(objectbox_min, objectbox_max);
rctf rect_bound;
LISTBASE_FOREACH (bGPDlayer *, gpl, &gpd->layers) {
if (gpl->flag & GP_LAYER_HIDE) {
continue;
}
float diff_mat[4][4];
/* calculate parent matrix */
BKE_gpencil_layer_transform_matrix_get(tgpf->depsgraph, ob, gpl, diff_mat);
/* Decide if the strokes of layers are included or not depending on the layer mode.
* Cannot skip the layer because it can use boundary strokes and must be used. */
const int gpl_index = BLI_findindex(&gpd->layers, gpl);
bool skip = skip_layer_check(brush_settings->fill_layer_mode, gpl_active_index, gpl_index);
/* Get frame to check. */
bGPDframe *gpf = BKE_gpencil_layer_frame_get(gpl, tgpf->active_cfra, GP_GETFRAME_USE_PREV);
if (gpf == NULL) {
continue;
}
/* Read all strokes. */
LISTBASE_FOREACH (bGPDstroke *, gps, &gpf->strokes) {
/* check if stroke can be drawn */
if ((gps->points == NULL) || (gps->totpoints < 2)) {
continue;
}
/* check if the color is visible */
MaterialGPencilStyle *gp_style = BKE_gpencil_material_settings(ob, gps->mat_nr + 1);
if ((gp_style == NULL) || (gp_style->flag & GP_MATERIAL_HIDE)) {
continue;
}
/* If the layer must be skipped, but the stroke is not boundary, skip stroke. */
if ((skip) && ((gps->flag & GP_STROKE_NOFILL) == 0)) {
continue;
}
float boundbox_min[2];
float boundbox_max[2];
ED_gpencil_projected_2d_bound_box(&tgpf->gsc, gps, diff_mat, boundbox_min, boundbox_max);
minmax_v2v2_v2(objectbox_min, objectbox_max, boundbox_min);
minmax_v2v2_v2(objectbox_min, objectbox_max, boundbox_max);
}
}
/* Clamp max bound box. */
BLI_rctf_init(
&rect_bound, objectbox_min[0], objectbox_max[0], objectbox_min[1], objectbox_max[1]);
float r_xy[2];
BLI_rctf_clamp(&rect_bound, &rect_max, r_xy);
/* Calculate total width used. */
float width = tgpf->region->winx;
if (rect_bound.xmin < 0.0f) {
width -= rect_bound.xmin;
}
if (rect_bound.xmax > tgpf->region->winx) {
width += rect_bound.xmax - tgpf->region->winx;
}
/* Calculate total height used. */
float height = tgpf->region->winy;
if (rect_bound.ymin < 0.0f) {
height -= rect_bound.ymin;
}
if (rect_bound.ymax > tgpf->region->winy) {
height += rect_bound.ymax - tgpf->region->winy;
}
width = ceilf(width);
height = ceilf(height);
float zoomx = (width > tgpf->region->winx) ? width / (float)tgpf->region->winx : 1.0f;
float zoomy = (height > tgpf->region->winy) ? height / (float)tgpf->region->winy : 1.0f;
if ((zoomx != 1.0f) || (zoomy != 1.0f)) {
tgpf->zoom = min_ff(max_ff(zoomx, zoomy) * 1.5f, 5.0f);
}
}
static bool gpencil_find_and_mark_empty_areas(tGPDfill *tgpf)
{
ImBuf *ibuf;
void *lock;
const float blue_col[4] = {0.0f, 0.0f, 1.0f, 1.0f};
ibuf = BKE_image_acquire_ibuf(tgpf->ima, NULL, &lock);
const int maxpixel = (ibuf->x * ibuf->y) - 1;
float rgba[4];
for (int i = 0; i < maxpixel; i++) {
get_pixel(ibuf, i, rgba);
if (rgba[3] == 0.0f) {
set_pixel(ibuf, i, blue_col);
return true;
}
}
return false;
}
static bool gpencil_do_frame_fill(tGPDfill *tgpf, const bool is_inverted)
{
wmWindow *win = CTX_wm_window(tgpf->C);
/* render screen to temp image */
int totpoints = 1;
if (gpencil_render_offscreen(tgpf)) {
/* Set red borders to create a external limit. */
gpencil_set_borders(tgpf, true);
/* apply boundary fill */
const bool border_contact = gpencil_boundaryfill_area(tgpf);
/* Fill only if it never comes in contact with an edge. It is better not to fill than
* to fill the entire area, as this is confusing for the artist. */
if ((!border_contact) || (is_inverted)) {
/* Invert direction if press Ctrl. */
if (is_inverted) {
gpencil_invert_image(tgpf);
while (gpencil_find_and_mark_empty_areas(tgpf)) {
gpencil_boundaryfill_area(tgpf);
}
}
/* Clean borders to avoid infinite loops. */
gpencil_set_borders(tgpf, false);
WM_cursor_time(win, 50);
int totpoints_prv = 0;
int loop_limit = 0;
while (totpoints > 0) {
/* analyze outline */
gpencil_get_outline_points(tgpf, (totpoints == 1) ? true : false);
/* create array of points from stack */
totpoints = gpencil_points_from_stack(tgpf);
/* create z-depth array for reproject */
gpencil_get_depth_array(tgpf);
/* create stroke and reproject */
gpencil_stroke_from_buffer(tgpf);
if (is_inverted) {
gpencil_erase_processed_area(tgpf);
}
else {
/* Exit of the loop. */
totpoints = 0;
}
/* free temp stack data */
if (tgpf->stack) {
BLI_stack_free(tgpf->stack);
}
WM_cursor_time(win, 100);
/* Free memory. */
MEM_SAFE_FREE(tgpf->sbuffer);
MEM_SAFE_FREE(tgpf->depth_arr);
/* Limit very small areas. */
if (totpoints < 3) {
break;
}
/* Limit infinite loops is some corner cases. */
if (totpoints_prv == totpoints) {
loop_limit++;
if (loop_limit > 3) {
break;
}
}
totpoints_prv = totpoints;
}
}
else {
BKE_report(tgpf->reports, RPT_INFO, "Unable to fill unclosed areas");
}
/* Delete temp image. */
if ((tgpf->ima) && (!FILL_DEBUG)) {
BKE_id_free(tgpf->bmain, tgpf->ima);
}
return true;
}
return false;
}
/* events handling during interactive part of operator */
static int gpencil_fill_modal(bContext *C, wmOperator *op, const wmEvent *event)
{
tGPDfill *tgpf = op->customdata;
Brush *brush = tgpf->brush;
BrushGpencilSettings *brush_settings = brush->gpencil_settings;
tgpf->on_back = RNA_boolean_get(op->ptr, "on_back");
const bool is_brush_inv = brush_settings->fill_direction == BRUSH_DIR_IN;
const bool is_inverted = (is_brush_inv && !event->ctrl) || (!is_brush_inv && event->ctrl);
const bool is_multiedit = (bool)GPENCIL_MULTIEDIT_SESSIONS_ON(tgpf->gpd);
const bool do_extend = (tgpf->fill_extend_fac > 0.0f);
const bool help_lines = ((tgpf->flag & GP_BRUSH_FILL_SHOW_HELPLINES) ||
((tgpf->flag & GP_BRUSH_FILL_SHOW_EXTENDLINES) && (do_extend)));
int estate = OPERATOR_RUNNING_MODAL;
switch (event->type) {
case EVT_ESCKEY:
case RIGHTMOUSE:
estate = OPERATOR_CANCELLED;
break;
case LEFTMOUSE:
if (!IS_AUTOKEY_ON(tgpf->scene) && (!is_multiedit) && (tgpf->gpl->actframe == NULL)) {
BKE_report(op->reports, RPT_INFO, "No available frame for creating stroke");
estate = OPERATOR_CANCELLED;
break;
}
/* first time the event is not enabled to show help lines. */
if ((tgpf->oldkey != -1) || (!help_lines)) {
ARegion *region = BKE_area_find_region_xy(CTX_wm_area(C), RGN_TYPE_ANY, event->xy);
if (region) {
bool in_bounds = false;
/* Perform bounds check */
in_bounds = BLI_rcti_isect_pt_v(®ion->winrct, event->xy);
if ((in_bounds) && (region->regiontype == RGN_TYPE_WINDOW)) {
tgpf->mouse[0] = event->mval[0];
tgpf->mouse[1] = event->mval[1];
tgpf->is_render = true;
/* Define Zoom level. */
gpencil_zoom_level_set(tgpf);
/* Create Temp stroke. */
tgpf->gps_mouse = BKE_gpencil_stroke_new(0, 1, 10.0f);
tGPspoint point2D;
bGPDspoint *pt = &tgpf->gps_mouse->points[0];
copy_v2fl_v2i(point2D.m_xy, tgpf->mouse);
gpencil_stroke_convertcoords_tpoint(
tgpf->scene, tgpf->region, tgpf->ob, &point2D, NULL, &pt->x);
/* Hash of selected frames. */
GHash *frame_list = BLI_ghash_int_new_ex(__func__, 64);
/* If not multiframe and there is no frame in CFRA for the active layer, create
* a new frame. */
if (!is_multiedit) {
tgpf->gpf = BKE_gpencil_layer_frame_get(
tgpf->gpl,
tgpf->active_cfra,
IS_AUTOKEY_ON(tgpf->scene) ? GP_GETFRAME_ADD_NEW : GP_GETFRAME_USE_PREV);
tgpf->gpf->flag |= GP_FRAME_SELECT;
BLI_ghash_insert(
frame_list, POINTER_FROM_INT(tgpf->active_cfra), tgpf->gpl->actframe);
}
else {
BKE_gpencil_frame_selected_hash(tgpf->gpd, frame_list);
}
/* Loop all frames. */
wmWindow *win = CTX_wm_window(C);
GHashIterator gh_iter;
int total = BLI_ghash_len(frame_list);
int i = 1;
GHASH_ITER (gh_iter, frame_list) {
/* Set active frame as current for filling. */
tgpf->active_cfra = POINTER_AS_INT(BLI_ghashIterator_getKey(&gh_iter));
int step = ((float)i / (float)total) * 100.0f;
WM_cursor_time(win, step);
if (do_extend) {
gpencil_update_extend(tgpf);
}
/* Repeat loop until get something. */
tgpf->done = false;
int loop_limit = 0;
while ((!tgpf->done) && (loop_limit < 2)) {
WM_cursor_time(win, loop_limit + 1);
/* Render screen to temp image and do fill. */
gpencil_do_frame_fill(tgpf, is_inverted);
/* restore size */
tgpf->region->winx = (short)tgpf->bwinx;
tgpf->region->winy = (short)tgpf->bwiny;
tgpf->region->winrct = tgpf->brect;
if (!tgpf->done) {
/* If the zoom was not set before, avoid a loop. */
if (tgpf->zoom == 1.0f) {
loop_limit++;
}
else {
tgpf->zoom = 1.0f;
tgpf->fill_factor = max_ff(
GPENCIL_MIN_FILL_FAC,
min_ff(brush->gpencil_settings->fill_factor, GPENCIL_MAX_FILL_FAC));
}
}
loop_limit++;
}
if (do_extend) {
gpencil_delete_temp_stroke_extension(tgpf, true);
}
i++;
}
WM_cursor_modal_restore(win);
/* Free hash table. */
BLI_ghash_free(frame_list, NULL, NULL);
/* Free temp stroke. */
BKE_gpencil_free_stroke(tgpf->gps_mouse);
/* push undo data */
gpencil_undo_push(tgpf->gpd);
/* Save extend value for next operation. */
brush_settings->fill_extend_fac = tgpf->fill_extend_fac;
estate = OPERATOR_FINISHED;
}
else {
estate = OPERATOR_CANCELLED;
}
}
else {
estate = OPERATOR_CANCELLED;
}
}
else if (do_extend) {
gpencil_update_extend(tgpf);
}
tgpf->oldkey = event->type;
break;
case EVT_PAGEUPKEY:
case WHEELUPMOUSE:
if (tgpf->oldkey == 1) {
tgpf->fill_extend_fac -= (event->shift) ? 0.01f : 0.1f;
CLAMP_MIN(tgpf->fill_extend_fac, 0.0f);
gpencil_update_extend(tgpf);
}
break;
case EVT_PAGEDOWNKEY:
case WHEELDOWNMOUSE:
if (tgpf->oldkey == 1) {
tgpf->fill_extend_fac += (event->shift) ? 0.01f : 0.1f;
CLAMP_MAX(tgpf->fill_extend_fac, 100.0f);
gpencil_update_extend(tgpf);
}
break;
default:
break;
}
/* process last operations before exiting */
switch (estate) {
case OPERATOR_FINISHED:
gpencil_fill_exit(C, op);
WM_event_add_notifier(C, NC_GPENCIL | NA_EDITED, NULL);
break;
case OPERATOR_CANCELLED:
gpencil_fill_exit(C, op);
break;
default:
break;
}
/* return status code */
return estate;
}
void GPENCIL_OT_fill(wmOperatorType *ot)
{
PropertyRNA *prop;
/* identifiers */
ot->name = "Grease Pencil Fill";
ot->idname = "GPENCIL_OT_fill";
ot->description = "Fill with color the shape formed by strokes";
/* api callbacks */
ot->invoke = gpencil_fill_invoke;
ot->modal = gpencil_fill_modal;
ot->poll = gpencil_fill_poll;
ot->cancel = gpencil_fill_cancel;
/* flags */
ot->flag = OPTYPE_UNDO | OPTYPE_BLOCKING;
prop = RNA_def_boolean(ot->srna, "on_back", false, "Draw on Back", "Send new stroke to back");
RNA_def_property_flag(prop, PROP_SKIP_SAVE);
}
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