1017 lines
28 KiB
C
1017 lines
28 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/blenkernel/intern/brush.c
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* \ingroup bke
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*/
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#include "MEM_guardedalloc.h"
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#include "DNA_brush_types.h"
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#include "DNA_scene_types.h"
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#include "DNA_object_types.h"
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#include "BLI_math.h"
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#include "BLI_blenlib.h"
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#include "BLI_rand.h"
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#include "BKE_brush.h"
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#include "BKE_colortools.h"
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#include "BKE_global.h"
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#include "BKE_library.h"
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#include "BKE_library_query.h"
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#include "BKE_library_remap.h"
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#include "BKE_main.h"
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#include "BKE_paint.h"
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#include "BKE_texture.h"
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#include "BKE_icons.h"
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#include "IMB_colormanagement.h"
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#include "IMB_imbuf.h"
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#include "IMB_imbuf_types.h"
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#include "RE_render_ext.h" /* externtex */
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static RNG *brush_rng;
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void BKE_brush_system_init(void)
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{
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brush_rng = BLI_rng_new(0);
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BLI_rng_srandom(brush_rng, 31415682);
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}
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void BKE_brush_system_exit(void)
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{
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BLI_rng_free(brush_rng);
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}
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static void brush_defaults(Brush *brush)
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{
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brush->blend = 0;
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brush->flag = 0;
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brush->ob_mode = OB_MODE_ALL_PAINT;
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/* BRUSH SCULPT TOOL SETTINGS */
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brush->weight = 1.0f; /* weight of brush 0 - 1.0 */
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brush->size = 35; /* radius of the brush in pixels */
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brush->alpha = 0.5f; /* brush strength/intensity probably variable should be renamed? */
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brush->autosmooth_factor = 0.0f;
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brush->crease_pinch_factor = 0.5f;
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brush->sculpt_plane = SCULPT_DISP_DIR_AREA;
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brush->plane_offset = 0.0f; /* how far above or below the plane that is found by averaging the faces */
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brush->plane_trim = 0.5f;
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brush->clone.alpha = 0.5f;
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brush->normal_weight = 0.0f;
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brush->fill_threshold = 0.2f;
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brush->flag |= BRUSH_ALPHA_PRESSURE;
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/* BRUSH PAINT TOOL SETTINGS */
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brush->rgb[0] = 1.0f; /* default rgb color of the brush when painting - white */
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brush->rgb[1] = 1.0f;
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brush->rgb[2] = 1.0f;
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zero_v3(brush->secondary_rgb);
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/* BRUSH STROKE SETTINGS */
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brush->flag |= (BRUSH_SPACE | BRUSH_SPACE_ATTEN);
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brush->spacing = 10; /* how far each brush dot should be spaced as a percentage of brush diameter */
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brush->smooth_stroke_radius = 75;
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brush->smooth_stroke_factor = 0.9f;
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brush->rate = 0.1f; /* time delay between dots of paint or sculpting when doing airbrush mode */
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brush->jitter = 0.0f;
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/* BRUSH TEXTURE SETTINGS */
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BKE_texture_mtex_default(&brush->mtex);
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BKE_texture_mtex_default(&brush->mask_mtex);
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brush->texture_sample_bias = 0; /* value to added to texture samples */
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brush->texture_overlay_alpha = 33;
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brush->mask_overlay_alpha = 33;
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brush->cursor_overlay_alpha = 33;
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brush->overlay_flags = 0;
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/* brush appearance */
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brush->add_col[0] = 1.00; /* add mode color is light red */
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brush->add_col[1] = 0.39;
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brush->add_col[2] = 0.39;
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brush->sub_col[0] = 0.39; /* subtract mode color is light blue */
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brush->sub_col[1] = 0.39;
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brush->sub_col[2] = 1.00;
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brush->stencil_pos[0] = 256;
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brush->stencil_pos[1] = 256;
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brush->stencil_dimension[0] = 256;
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brush->stencil_dimension[1] = 256;
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}
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/* Datablock add/copy/free/make_local */
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void BKE_brush_init(Brush *brush)
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{
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BLI_assert(MEMCMP_STRUCT_OFS_IS_ZERO(brush, id));
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/* enable fake user by default */
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id_fake_user_set(&brush->id);
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brush_defaults(brush);
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brush->sculpt_tool = SCULPT_TOOL_DRAW; /* sculpting defaults to the draw tool for new brushes */
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/* the default alpha falloff curve */
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BKE_brush_curve_preset(brush, CURVE_PRESET_SMOOTH);
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}
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/**
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* \note Resulting brush will have two users: one as a fake user, another is assumed to be used by the caller.
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*/
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Brush *BKE_brush_add(Main *bmain, const char *name, const eObjectMode ob_mode)
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{
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Brush *brush;
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brush = BKE_libblock_alloc(bmain, ID_BR, name, 0);
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BKE_brush_init(brush);
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brush->ob_mode = ob_mode;
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return brush;
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}
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struct Brush *BKE_brush_first_search(struct Main *bmain, const eObjectMode ob_mode)
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{
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Brush *brush;
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for (brush = bmain->brush.first; brush; brush = brush->id.next) {
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if (brush->ob_mode & ob_mode)
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return brush;
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}
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return NULL;
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}
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/**
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* Only copy internal data of Brush ID from source to already allocated/initialized destination.
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* You probably nerver want to use that directly, use id_copy or BKE_id_copy_ex for typical needs.
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*
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* WARNING! This function will not handle ID user count!
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*
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* \param flag Copying options (see BKE_library.h's LIB_ID_COPY_... flags for more).
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*/
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void BKE_brush_copy_data(Main *UNUSED(bmain), Brush *brush_dst, const Brush *brush_src, const int flag)
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{
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if (brush_src->icon_imbuf) {
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brush_dst->icon_imbuf = IMB_dupImBuf(brush_src->icon_imbuf);
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}
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if ((flag & LIB_ID_COPY_NO_PREVIEW) == 0) {
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BKE_previewimg_id_copy(&brush_dst->id, &brush_src->id);
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}
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else {
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brush_dst->preview = NULL;
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}
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brush_dst->curve = curvemapping_copy(brush_src->curve);
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/* enable fake user by default */
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id_fake_user_set(&brush_dst->id);
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}
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Brush *BKE_brush_copy(Main *bmain, const Brush *brush)
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{
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Brush *brush_copy;
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BKE_id_copy_ex(bmain, &brush->id, (ID **)&brush_copy, 0, false);
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return brush_copy;
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}
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/** Free (or release) any data used by this brush (does not free the brush itself). */
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void BKE_brush_free(Brush *brush)
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{
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if (brush->icon_imbuf) {
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IMB_freeImBuf(brush->icon_imbuf);
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}
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curvemapping_free(brush->curve);
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MEM_SAFE_FREE(brush->gradient);
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BKE_previewimg_free(&(brush->preview));
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}
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void BKE_brush_make_local(Main *bmain, Brush *brush, const bool lib_local)
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{
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bool is_local = false, is_lib = false;
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/* - only lib users: do nothing (unless force_local is set)
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* - only local users: set flag
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* - mixed: make copy
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*/
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if (!ID_IS_LINKED(brush)) {
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return;
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}
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if (brush->clone.image) {
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/* Special case: ima always local immediately. Clone image should only have one user anyway. */
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id_make_local(bmain, &brush->clone.image->id, false, false);
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}
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BKE_library_ID_test_usages(bmain, brush, &is_local, &is_lib);
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if (lib_local || is_local) {
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if (!is_lib) {
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id_clear_lib_data(bmain, &brush->id);
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BKE_id_expand_local(bmain, &brush->id);
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/* enable fake user by default */
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id_fake_user_set(&brush->id);
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}
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else {
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Brush *brush_new = BKE_brush_copy(bmain, brush); /* Ensures FAKE_USER is set */
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brush_new->id.us = 0;
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/* setting newid is mandatory for complex make_lib_local logic... */
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ID_NEW_SET(brush, brush_new);
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if (!lib_local) {
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BKE_libblock_remap(bmain, brush, brush_new, ID_REMAP_SKIP_INDIRECT_USAGE);
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}
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}
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}
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}
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void BKE_brush_debug_print_state(Brush *br)
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{
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/* create a fake brush and set it to the defaults */
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Brush def = {{NULL}};
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brush_defaults(&def);
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#define BR_TEST(field, t) \
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if (br->field != def.field) \
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printf("br->" #field " = %" #t ";\n", br->field)
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#define BR_TEST_FLAG(_f) \
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if ((br->flag & _f) && !(def.flag & _f)) \
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printf("br->flag |= " #_f ";\n"); \
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else if (!(br->flag & _f) && (def.flag & _f)) \
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printf("br->flag &= ~" #_f ";\n")
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#define BR_TEST_FLAG_OVERLAY(_f) \
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if ((br->overlay_flags & _f) && !(def.overlay_flags & _f)) \
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printf("br->overlay_flags |= " #_f ";\n"); \
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else if (!(br->overlay_flags & _f) && (def.overlay_flags & _f)) \
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printf("br->overlay_flags &= ~" #_f ";\n")
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/* print out any non-default brush state */
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BR_TEST(normal_weight, f);
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BR_TEST(blend, d);
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BR_TEST(size, d);
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/* br->flag */
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BR_TEST_FLAG(BRUSH_AIRBRUSH);
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BR_TEST_FLAG(BRUSH_ALPHA_PRESSURE);
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BR_TEST_FLAG(BRUSH_SIZE_PRESSURE);
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BR_TEST_FLAG(BRUSH_JITTER_PRESSURE);
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BR_TEST_FLAG(BRUSH_SPACING_PRESSURE);
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BR_TEST_FLAG(BRUSH_ANCHORED);
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BR_TEST_FLAG(BRUSH_DIR_IN);
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BR_TEST_FLAG(BRUSH_SPACE);
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BR_TEST_FLAG(BRUSH_SMOOTH_STROKE);
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BR_TEST_FLAG(BRUSH_PERSISTENT);
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BR_TEST_FLAG(BRUSH_ACCUMULATE);
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BR_TEST_FLAG(BRUSH_LOCK_ALPHA);
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BR_TEST_FLAG(BRUSH_ORIGINAL_NORMAL);
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BR_TEST_FLAG(BRUSH_OFFSET_PRESSURE);
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BR_TEST_FLAG(BRUSH_SPACE_ATTEN);
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BR_TEST_FLAG(BRUSH_ADAPTIVE_SPACE);
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BR_TEST_FLAG(BRUSH_LOCK_SIZE);
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BR_TEST_FLAG(BRUSH_EDGE_TO_EDGE);
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BR_TEST_FLAG(BRUSH_DRAG_DOT);
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BR_TEST_FLAG(BRUSH_INVERSE_SMOOTH_PRESSURE);
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BR_TEST_FLAG(BRUSH_PLANE_TRIM);
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BR_TEST_FLAG(BRUSH_FRONTFACE);
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BR_TEST_FLAG(BRUSH_CUSTOM_ICON);
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BR_TEST_FLAG_OVERLAY(BRUSH_OVERLAY_CURSOR);
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BR_TEST_FLAG_OVERLAY(BRUSH_OVERLAY_PRIMARY);
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BR_TEST_FLAG_OVERLAY(BRUSH_OVERLAY_SECONDARY);
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BR_TEST_FLAG_OVERLAY(BRUSH_OVERLAY_CURSOR_OVERRIDE_ON_STROKE);
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BR_TEST_FLAG_OVERLAY(BRUSH_OVERLAY_PRIMARY_OVERRIDE_ON_STROKE);
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BR_TEST_FLAG_OVERLAY(BRUSH_OVERLAY_SECONDARY_OVERRIDE_ON_STROKE);
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BR_TEST(jitter, f);
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BR_TEST(spacing, d);
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BR_TEST(smooth_stroke_radius, d);
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BR_TEST(smooth_stroke_factor, f);
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BR_TEST(rate, f);
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BR_TEST(alpha, f);
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BR_TEST(sculpt_plane, d);
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BR_TEST(plane_offset, f);
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BR_TEST(autosmooth_factor, f);
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BR_TEST(crease_pinch_factor, f);
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BR_TEST(plane_trim, f);
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BR_TEST(texture_sample_bias, f);
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BR_TEST(texture_overlay_alpha, d);
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BR_TEST(add_col[0], f);
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BR_TEST(add_col[1], f);
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BR_TEST(add_col[2], f);
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BR_TEST(sub_col[0], f);
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BR_TEST(sub_col[1], f);
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BR_TEST(sub_col[2], f);
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printf("\n");
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#undef BR_TEST
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#undef BR_TEST_FLAG
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}
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void BKE_brush_sculpt_reset(Brush *br)
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{
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/* enable this to see any non-default
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* settings used by a brush: */
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// BKE_brush_debug_print_state(br);
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brush_defaults(br);
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BKE_brush_curve_preset(br, CURVE_PRESET_SMOOTH);
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switch (br->sculpt_tool) {
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case SCULPT_TOOL_CLAY:
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br->flag |= BRUSH_FRONTFACE;
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break;
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case SCULPT_TOOL_CREASE:
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br->flag |= BRUSH_DIR_IN;
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br->alpha = 0.25;
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break;
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case SCULPT_TOOL_FILL:
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br->add_col[1] = 1;
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br->sub_col[0] = 0.25;
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br->sub_col[1] = 1;
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break;
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case SCULPT_TOOL_FLATTEN:
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br->add_col[1] = 1;
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br->sub_col[0] = 0.25;
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br->sub_col[1] = 1;
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break;
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case SCULPT_TOOL_INFLATE:
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br->add_col[0] = 0.750000;
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br->add_col[1] = 0.750000;
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br->add_col[2] = 0.750000;
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br->sub_col[0] = 0.250000;
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br->sub_col[1] = 0.250000;
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br->sub_col[2] = 0.250000;
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break;
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case SCULPT_TOOL_NUDGE:
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br->add_col[0] = 0.250000;
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br->add_col[1] = 1.000000;
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br->add_col[2] = 0.250000;
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break;
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case SCULPT_TOOL_PINCH:
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br->add_col[0] = 0.750000;
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br->add_col[1] = 0.750000;
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br->add_col[2] = 0.750000;
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br->sub_col[0] = 0.250000;
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br->sub_col[1] = 0.250000;
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br->sub_col[2] = 0.250000;
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break;
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case SCULPT_TOOL_SCRAPE:
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br->add_col[1] = 1.000000;
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br->sub_col[0] = 0.250000;
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br->sub_col[1] = 1.000000;
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break;
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case SCULPT_TOOL_ROTATE:
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br->alpha = 1.0;
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break;
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case SCULPT_TOOL_SMOOTH:
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br->flag &= ~BRUSH_SPACE_ATTEN;
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br->spacing = 5;
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br->add_col[0] = 0.750000;
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br->add_col[1] = 0.750000;
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br->add_col[2] = 0.750000;
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break;
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case SCULPT_TOOL_GRAB:
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case SCULPT_TOOL_SNAKE_HOOK:
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case SCULPT_TOOL_THUMB:
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br->size = 75;
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br->flag &= ~BRUSH_ALPHA_PRESSURE;
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br->flag &= ~BRUSH_SPACE;
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br->flag &= ~BRUSH_SPACE_ATTEN;
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br->add_col[0] = 0.250000;
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br->add_col[1] = 1.000000;
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br->add_col[2] = 0.250000;
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break;
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default:
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break;
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}
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}
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/**
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* Library Operations
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*/
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void BKE_brush_curve_preset(Brush *b, eCurveMappingPreset preset)
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{
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CurveMap *cm = NULL;
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if (!b->curve)
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b->curve = curvemapping_add(1, 0, 0, 1, 1);
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cm = b->curve->cm;
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cm->flag &= ~CUMA_EXTEND_EXTRAPOLATE;
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b->curve->preset = preset;
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curvemap_reset(cm, &b->curve->clipr, b->curve->preset, CURVEMAP_SLOPE_NEGATIVE);
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curvemapping_changed(b->curve, false);
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}
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/* Generic texture sampler for 3D painting systems. point has to be either in
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* region space mouse coordinates, or 3d world coordinates for 3D mapping.
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*
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* rgba outputs straight alpha. */
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float BKE_brush_sample_tex_3D(const Scene *scene, const Brush *br,
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const float point[3],
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float rgba[4], const int thread,
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struct ImagePool *pool)
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{
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UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
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const MTex *mtex = &br->mtex;
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float intensity = 1.0;
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bool hasrgb = false;
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if (!mtex->tex) {
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intensity = 1;
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}
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else if (mtex->brush_map_mode == MTEX_MAP_MODE_3D) {
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/* Get strength by feeding the vertex
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* location directly into a texture */
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hasrgb = externtex(mtex, point, &intensity,
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rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
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}
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else if (mtex->brush_map_mode == MTEX_MAP_MODE_STENCIL) {
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float rotation = -mtex->rot;
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float point_2d[2] = {point[0], point[1]};
|
|
float x, y;
|
|
float co[3];
|
|
|
|
x = point_2d[0] - br->stencil_pos[0];
|
|
y = point_2d[1] - br->stencil_pos[1];
|
|
|
|
if (rotation > 0.001f || rotation < -0.001f) {
|
|
const float angle = atan2f(y, x) + rotation;
|
|
const float flen = sqrtf(x * x + y * y);
|
|
|
|
x = flen * cosf(angle);
|
|
y = flen * sinf(angle);
|
|
}
|
|
|
|
if (fabsf(x) > br->stencil_dimension[0] || fabsf(y) > br->stencil_dimension[1]) {
|
|
zero_v4(rgba);
|
|
return 0.0f;
|
|
}
|
|
x /= (br->stencil_dimension[0]);
|
|
y /= (br->stencil_dimension[1]);
|
|
|
|
co[0] = x;
|
|
co[1] = y;
|
|
co[2] = 0.0f;
|
|
|
|
hasrgb = externtex(mtex, co, &intensity,
|
|
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
|
|
}
|
|
else {
|
|
float rotation = -mtex->rot;
|
|
float point_2d[2] = {point[0], point[1]};
|
|
float x = 0.0f, y = 0.0f; /* Quite warnings */
|
|
float invradius = 1.0f; /* Quite warnings */
|
|
float co[3];
|
|
|
|
if (mtex->brush_map_mode == MTEX_MAP_MODE_VIEW) {
|
|
/* keep coordinates relative to mouse */
|
|
|
|
rotation += ups->brush_rotation;
|
|
|
|
x = point_2d[0] - ups->tex_mouse[0];
|
|
y = point_2d[1] - ups->tex_mouse[1];
|
|
|
|
/* use pressure adjusted size for fixed mode */
|
|
invradius = 1.0f / ups->pixel_radius;
|
|
}
|
|
else if (mtex->brush_map_mode == MTEX_MAP_MODE_TILED) {
|
|
/* leave the coordinates relative to the screen */
|
|
|
|
/* use unadjusted size for tiled mode */
|
|
invradius = 1.0f / BKE_brush_size_get(scene, br);
|
|
|
|
x = point_2d[0];
|
|
y = point_2d[1];
|
|
}
|
|
else if (mtex->brush_map_mode == MTEX_MAP_MODE_RANDOM) {
|
|
rotation += ups->brush_rotation;
|
|
/* these contain a random coordinate */
|
|
x = point_2d[0] - ups->tex_mouse[0];
|
|
y = point_2d[1] - ups->tex_mouse[1];
|
|
|
|
invradius = 1.0f / ups->pixel_radius;
|
|
}
|
|
|
|
x *= invradius;
|
|
y *= invradius;
|
|
|
|
/* it is probably worth optimizing for those cases where
|
|
* the texture is not rotated by skipping the calls to
|
|
* atan2, sqrtf, sin, and cos. */
|
|
if (rotation > 0.001f || rotation < -0.001f) {
|
|
const float angle = atan2f(y, x) + rotation;
|
|
const float flen = sqrtf(x * x + y * y);
|
|
|
|
x = flen * cosf(angle);
|
|
y = flen * sinf(angle);
|
|
}
|
|
|
|
co[0] = x;
|
|
co[1] = y;
|
|
co[2] = 0.0f;
|
|
|
|
hasrgb = externtex(mtex, co, &intensity,
|
|
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
|
|
}
|
|
|
|
intensity += br->texture_sample_bias;
|
|
|
|
if (!hasrgb) {
|
|
rgba[0] = intensity;
|
|
rgba[1] = intensity;
|
|
rgba[2] = intensity;
|
|
rgba[3] = 1.0f;
|
|
}
|
|
/* For consistency, sampling always returns color in linear space */
|
|
else if (ups->do_linear_conversion) {
|
|
IMB_colormanagement_colorspace_to_scene_linear_v3(rgba, ups->colorspace);
|
|
}
|
|
|
|
return intensity;
|
|
}
|
|
|
|
float BKE_brush_sample_masktex(const Scene *scene, Brush *br,
|
|
const float point[2],
|
|
const int thread,
|
|
struct ImagePool *pool)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
MTex *mtex = &br->mask_mtex;
|
|
float rgba[4], intensity;
|
|
|
|
if (!mtex->tex) {
|
|
return 1.0f;
|
|
}
|
|
if (mtex->brush_map_mode == MTEX_MAP_MODE_STENCIL) {
|
|
float rotation = -mtex->rot;
|
|
float point_2d[2] = {point[0], point[1]};
|
|
float x, y;
|
|
float co[3];
|
|
|
|
x = point_2d[0] - br->mask_stencil_pos[0];
|
|
y = point_2d[1] - br->mask_stencil_pos[1];
|
|
|
|
if (rotation > 0.001f || rotation < -0.001f) {
|
|
const float angle = atan2f(y, x) + rotation;
|
|
const float flen = sqrtf(x * x + y * y);
|
|
|
|
x = flen * cosf(angle);
|
|
y = flen * sinf(angle);
|
|
}
|
|
|
|
if (fabsf(x) > br->mask_stencil_dimension[0] || fabsf(y) > br->mask_stencil_dimension[1]) {
|
|
zero_v4(rgba);
|
|
return 0.0f;
|
|
}
|
|
x /= (br->mask_stencil_dimension[0]);
|
|
y /= (br->mask_stencil_dimension[1]);
|
|
|
|
co[0] = x;
|
|
co[1] = y;
|
|
co[2] = 0.0f;
|
|
|
|
externtex(mtex, co, &intensity,
|
|
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
|
|
}
|
|
else {
|
|
float rotation = -mtex->rot;
|
|
float point_2d[2] = {point[0], point[1]};
|
|
float x = 0.0f, y = 0.0f; /* Quite warnings */
|
|
float invradius = 1.0f; /* Quite warnings */
|
|
float co[3];
|
|
|
|
if (mtex->brush_map_mode == MTEX_MAP_MODE_VIEW) {
|
|
/* keep coordinates relative to mouse */
|
|
|
|
rotation += ups->brush_rotation_sec;
|
|
|
|
x = point_2d[0] - ups->mask_tex_mouse[0];
|
|
y = point_2d[1] - ups->mask_tex_mouse[1];
|
|
|
|
/* use pressure adjusted size for fixed mode */
|
|
invradius = 1.0f / ups->pixel_radius;
|
|
}
|
|
else if (mtex->brush_map_mode == MTEX_MAP_MODE_TILED) {
|
|
/* leave the coordinates relative to the screen */
|
|
|
|
/* use unadjusted size for tiled mode */
|
|
invradius = 1.0f / BKE_brush_size_get(scene, br);
|
|
|
|
x = point_2d[0];
|
|
y = point_2d[1];
|
|
}
|
|
else if (mtex->brush_map_mode == MTEX_MAP_MODE_RANDOM) {
|
|
rotation += ups->brush_rotation_sec;
|
|
/* these contain a random coordinate */
|
|
x = point_2d[0] - ups->mask_tex_mouse[0];
|
|
y = point_2d[1] - ups->mask_tex_mouse[1];
|
|
|
|
invradius = 1.0f / ups->pixel_radius;
|
|
}
|
|
|
|
x *= invradius;
|
|
y *= invradius;
|
|
|
|
/* it is probably worth optimizing for those cases where
|
|
* the texture is not rotated by skipping the calls to
|
|
* atan2, sqrtf, sin, and cos. */
|
|
if (rotation > 0.001f || rotation < -0.001f) {
|
|
const float angle = atan2f(y, x) + rotation;
|
|
const float flen = sqrtf(x * x + y * y);
|
|
|
|
x = flen * cosf(angle);
|
|
y = flen * sinf(angle);
|
|
}
|
|
|
|
co[0] = x;
|
|
co[1] = y;
|
|
co[2] = 0.0f;
|
|
|
|
externtex(mtex, co, &intensity,
|
|
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
|
|
}
|
|
|
|
CLAMP(intensity, 0.0f, 1.0f);
|
|
|
|
switch (br->mask_pressure) {
|
|
case BRUSH_MASK_PRESSURE_CUTOFF:
|
|
intensity = ((1.0f - intensity) < ups->size_pressure_value) ? 1.0f : 0.0f;
|
|
break;
|
|
case BRUSH_MASK_PRESSURE_RAMP:
|
|
intensity = ups->size_pressure_value + intensity * (1.0f - ups->size_pressure_value);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return intensity;
|
|
}
|
|
|
|
/* Unified Size / Strength / Color */
|
|
|
|
/* XXX: be careful about setting size and unprojected radius
|
|
* because they depend on one another
|
|
* these functions do not set the other corresponding value
|
|
* this can lead to odd behavior if size and unprojected
|
|
* radius become inconsistent.
|
|
* the biggest problem is that it isn't possible to change
|
|
* unprojected radius because a view context is not
|
|
* available. my usual solution to this is to use the
|
|
* ratio of change of the size to change the unprojected
|
|
* radius. Not completely convinced that is correct.
|
|
* In any case, a better solution is needed to prevent
|
|
* inconsistency. */
|
|
|
|
|
|
const float *BKE_brush_color_get(const struct Scene *scene, const struct Brush *brush)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
return (ups->flag & UNIFIED_PAINT_COLOR) ? ups->rgb : brush->rgb;
|
|
}
|
|
|
|
const float *BKE_brush_secondary_color_get(const struct Scene *scene, const struct Brush *brush)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
return (ups->flag & UNIFIED_PAINT_COLOR) ? ups->secondary_rgb : brush->secondary_rgb;
|
|
}
|
|
|
|
void BKE_brush_color_set(struct Scene *scene, struct Brush *brush, const float color[3])
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
|
|
if (ups->flag & UNIFIED_PAINT_COLOR)
|
|
copy_v3_v3(ups->rgb, color);
|
|
else
|
|
copy_v3_v3(brush->rgb, color);
|
|
}
|
|
|
|
void BKE_brush_size_set(Scene *scene, Brush *brush, int size)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
|
|
/* make sure range is sane */
|
|
CLAMP(size, 1, MAX_BRUSH_PIXEL_RADIUS);
|
|
|
|
if (ups->flag & UNIFIED_PAINT_SIZE)
|
|
ups->size = size;
|
|
else
|
|
brush->size = size;
|
|
}
|
|
|
|
int BKE_brush_size_get(const Scene *scene, const Brush *brush)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
int size = (ups->flag & UNIFIED_PAINT_SIZE) ? ups->size : brush->size;
|
|
|
|
return size;
|
|
}
|
|
|
|
bool BKE_brush_use_locked_size(const Scene *scene, const Brush *brush)
|
|
{
|
|
const short us_flag = scene->toolsettings->unified_paint_settings.flag;
|
|
|
|
return (us_flag & UNIFIED_PAINT_SIZE) ?
|
|
(us_flag & UNIFIED_PAINT_BRUSH_LOCK_SIZE) :
|
|
(brush->flag & BRUSH_LOCK_SIZE);
|
|
}
|
|
|
|
bool BKE_brush_use_size_pressure(const Scene *scene, const Brush *brush)
|
|
{
|
|
const short us_flag = scene->toolsettings->unified_paint_settings.flag;
|
|
|
|
return (us_flag & UNIFIED_PAINT_SIZE) ?
|
|
(us_flag & UNIFIED_PAINT_BRUSH_SIZE_PRESSURE) :
|
|
(brush->flag & BRUSH_SIZE_PRESSURE);
|
|
}
|
|
|
|
bool BKE_brush_use_alpha_pressure(const Scene *scene, const Brush *brush)
|
|
{
|
|
const short us_flag = scene->toolsettings->unified_paint_settings.flag;
|
|
|
|
return (us_flag & UNIFIED_PAINT_ALPHA) ?
|
|
(us_flag & UNIFIED_PAINT_BRUSH_ALPHA_PRESSURE) :
|
|
(brush->flag & BRUSH_ALPHA_PRESSURE);
|
|
}
|
|
|
|
bool BKE_brush_sculpt_has_secondary_color(const Brush *brush)
|
|
{
|
|
return ELEM(
|
|
brush->sculpt_tool, SCULPT_TOOL_BLOB, SCULPT_TOOL_DRAW,
|
|
SCULPT_TOOL_INFLATE, SCULPT_TOOL_CLAY, SCULPT_TOOL_CLAY_STRIPS,
|
|
SCULPT_TOOL_PINCH, SCULPT_TOOL_CREASE, SCULPT_TOOL_LAYER,
|
|
SCULPT_TOOL_FLATTEN, SCULPT_TOOL_FILL, SCULPT_TOOL_SCRAPE,
|
|
SCULPT_TOOL_MASK);
|
|
}
|
|
|
|
void BKE_brush_unprojected_radius_set(Scene *scene, Brush *brush, float unprojected_radius)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
|
|
if (ups->flag & UNIFIED_PAINT_SIZE)
|
|
ups->unprojected_radius = unprojected_radius;
|
|
else
|
|
brush->unprojected_radius = unprojected_radius;
|
|
}
|
|
|
|
float BKE_brush_unprojected_radius_get(const Scene *scene, const Brush *brush)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
|
|
return (ups->flag & UNIFIED_PAINT_SIZE) ?
|
|
ups->unprojected_radius :
|
|
brush->unprojected_radius;
|
|
}
|
|
|
|
void BKE_brush_alpha_set(Scene *scene, Brush *brush, float alpha)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
|
|
if (ups->flag & UNIFIED_PAINT_ALPHA)
|
|
ups->alpha = alpha;
|
|
else
|
|
brush->alpha = alpha;
|
|
}
|
|
|
|
float BKE_brush_alpha_get(const Scene *scene, const Brush *brush)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
|
|
return (ups->flag & UNIFIED_PAINT_ALPHA) ? ups->alpha : brush->alpha;
|
|
}
|
|
|
|
float BKE_brush_weight_get(const Scene *scene, const Brush *brush)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
|
|
return (ups->flag & UNIFIED_PAINT_WEIGHT) ? ups->weight : brush->weight;
|
|
}
|
|
|
|
void BKE_brush_weight_set(const Scene *scene, Brush *brush, float value)
|
|
{
|
|
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
|
|
|
|
if (ups->flag & UNIFIED_PAINT_WEIGHT)
|
|
ups->weight = value;
|
|
else
|
|
brush->weight = value;
|
|
}
|
|
|
|
/* scale unprojected radius to reflect a change in the brush's 2D size */
|
|
void BKE_brush_scale_unprojected_radius(float *unprojected_radius,
|
|
int new_brush_size,
|
|
int old_brush_size)
|
|
{
|
|
float scale = new_brush_size;
|
|
/* avoid division by zero */
|
|
if (old_brush_size != 0)
|
|
scale /= (float)old_brush_size;
|
|
(*unprojected_radius) *= scale;
|
|
}
|
|
|
|
/* scale brush size to reflect a change in the brush's unprojected radius */
|
|
void BKE_brush_scale_size(
|
|
int *r_brush_size,
|
|
float new_unprojected_radius,
|
|
float old_unprojected_radius)
|
|
{
|
|
float scale = new_unprojected_radius;
|
|
/* avoid division by zero */
|
|
if (old_unprojected_radius != 0)
|
|
scale /= new_unprojected_radius;
|
|
(*r_brush_size) = (int)((float)(*r_brush_size) * scale);
|
|
}
|
|
|
|
void BKE_brush_jitter_pos(const Scene *scene, Brush *brush, const float pos[2], float jitterpos[2])
|
|
{
|
|
float rand_pos[2];
|
|
float spread;
|
|
int diameter;
|
|
|
|
do {
|
|
rand_pos[0] = BLI_rng_get_float(brush_rng) - 0.5f;
|
|
rand_pos[1] = BLI_rng_get_float(brush_rng) - 0.5f;
|
|
} while (len_squared_v2(rand_pos) > SQUARE(0.5f));
|
|
|
|
|
|
if (brush->flag & BRUSH_ABSOLUTE_JITTER) {
|
|
diameter = 2 * brush->jitter_absolute;
|
|
spread = 1.0;
|
|
}
|
|
else {
|
|
diameter = 2 * BKE_brush_size_get(scene, brush);
|
|
spread = brush->jitter;
|
|
}
|
|
/* find random position within a circle of diameter 1 */
|
|
jitterpos[0] = pos[0] + 2 * rand_pos[0] * diameter * spread;
|
|
jitterpos[1] = pos[1] + 2 * rand_pos[1] * diameter * spread;
|
|
}
|
|
|
|
void BKE_brush_randomize_texture_coords(UnifiedPaintSettings *ups, bool mask)
|
|
{
|
|
/* we multiply with brush radius as an optimization for the brush
|
|
* texture sampling functions */
|
|
if (mask) {
|
|
ups->mask_tex_mouse[0] = BLI_rng_get_float(brush_rng) * ups->pixel_radius;
|
|
ups->mask_tex_mouse[1] = BLI_rng_get_float(brush_rng) * ups->pixel_radius;
|
|
}
|
|
else {
|
|
ups->tex_mouse[0] = BLI_rng_get_float(brush_rng) * ups->pixel_radius;
|
|
ups->tex_mouse[1] = BLI_rng_get_float(brush_rng) * ups->pixel_radius;
|
|
}
|
|
}
|
|
|
|
/* Uses the brush curve control to find a strength value */
|
|
float BKE_brush_curve_strength(const Brush *br, float p, const float len)
|
|
{
|
|
float strength;
|
|
|
|
if (p >= len) return 0;
|
|
else p = p / len;
|
|
|
|
strength = curvemapping_evaluateF(br->curve, 0, p);
|
|
|
|
return strength;
|
|
}
|
|
|
|
|
|
/* Uses the brush curve control to find a strength value between 0 and 1 */
|
|
float BKE_brush_curve_strength_clamped(Brush *br, float p, const float len)
|
|
{
|
|
float strength = BKE_brush_curve_strength(br, p, len);
|
|
|
|
CLAMP(strength, 0.0f, 1.0f);
|
|
|
|
return strength;
|
|
}
|
|
|
|
/* TODO: should probably be unified with BrushPainter stuff? */
|
|
unsigned int *BKE_brush_gen_texture_cache(Brush *br, int half_side, bool use_secondary)
|
|
{
|
|
unsigned int *texcache = NULL;
|
|
MTex *mtex = (use_secondary) ? &br->mask_mtex : &br->mtex;
|
|
float intensity;
|
|
float rgba[4];
|
|
int ix, iy;
|
|
int side = half_side * 2;
|
|
|
|
if (mtex->tex) {
|
|
float x, y, step = 2.0 / side, co[3];
|
|
|
|
texcache = MEM_callocN(sizeof(int) * side * side, "Brush texture cache");
|
|
|
|
/* do normalized cannonical view coords for texture */
|
|
for (y = -1.0, iy = 0; iy < side; iy++, y += step) {
|
|
for (x = -1.0, ix = 0; ix < side; ix++, x += step) {
|
|
co[0] = x;
|
|
co[1] = y;
|
|
co[2] = 0.0f;
|
|
|
|
/* This is copied from displace modifier code */
|
|
/* TODO(sergey): brush are always cacheing with CM enabled for now. */
|
|
externtex(mtex, co, &intensity,
|
|
rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false, false);
|
|
|
|
((char *)texcache)[(iy * side + ix) * 4] =
|
|
((char *)texcache)[(iy * side + ix) * 4 + 1] =
|
|
((char *)texcache)[(iy * side + ix) * 4 + 2] =
|
|
((char *)texcache)[(iy * side + ix) * 4 + 3] = (char)(intensity * 255.0f);
|
|
}
|
|
}
|
|
}
|
|
|
|
return texcache;
|
|
}
|
|
|
|
|
|
/**** Radial Control ****/
|
|
struct ImBuf *BKE_brush_gen_radial_control_imbuf(Brush *br, bool secondary)
|
|
{
|
|
ImBuf *im = MEM_callocN(sizeof(ImBuf), "radial control texture");
|
|
unsigned int *texcache;
|
|
int side = 128;
|
|
int half = side / 2;
|
|
int i, j;
|
|
|
|
curvemapping_initialize(br->curve);
|
|
texcache = BKE_brush_gen_texture_cache(br, half, secondary);
|
|
im->rect_float = MEM_callocN(sizeof(float) * side * side, "radial control rect");
|
|
im->x = im->y = side;
|
|
|
|
for (i = 0; i < side; ++i) {
|
|
for (j = 0; j < side; ++j) {
|
|
float magn = sqrtf(pow2f(i - half) + pow2f(j - half));
|
|
im->rect_float[i * side + j] = BKE_brush_curve_strength_clamped(br, magn, half);
|
|
}
|
|
}
|
|
|
|
/* Modulate curve with texture */
|
|
if (texcache) {
|
|
for (i = 0; i < side; ++i) {
|
|
for (j = 0; j < side; ++j) {
|
|
const int col = texcache[i * side + j];
|
|
im->rect_float[i * side + j] *=
|
|
(((char *)&col)[0] + ((char *)&col)[1] + ((char *)&col)[2]) / 3.0f / 255.0f;
|
|
}
|
|
}
|
|
|
|
MEM_freeN(texcache);
|
|
}
|
|
|
|
return im;
|
|
}
|