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blender-archive/source/blender/blenkernel/intern/brush.c
Campbell Barton 599cd56f53 minor edits / cleanup - no functional changes.
- use 'const float *' and array size in some function declarations.
- replace macros for BLI_math functions INPF, VECCOPY, VECADD etc.
- remove unused VertRen.clip struct member.
- remove static squared_dist() from 2 files, replace with BLI_math function len_squared_v3v3().
- use vertex arrays for drawing clipping background in the 3D viewport.
2011-09-11 02:50:01 +00:00

1473 lines
38 KiB
C

/*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/blenkernel/intern/brush.c
* \ingroup bke
*/
#include <math.h>
#include <string.h>
#include "MEM_guardedalloc.h"
#include "DNA_brush_types.h"
#include "DNA_color_types.h"
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#include "DNA_windowmanager_types.h"
#include "WM_types.h"
#include "RNA_access.h"
#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_rand.h"
#include "BLI_utildefines.h"
#include "BKE_brush.h"
#include "BKE_colortools.h"
#include "BKE_global.h"
#include "BKE_image.h"
#include "BKE_library.h"
#include "BKE_main.h"
#include "BKE_paint.h"
#include "BKE_texture.h"
#include "BKE_icons.h"
#include "IMB_imbuf.h"
#include "IMB_imbuf_types.h"
#include "RE_render_ext.h" /* externtex */
#include "RE_shader_ext.h"
static void brush_set_defaults(Brush *brush)
{
brush->blend = 0;
brush->flag = 0;
brush->ob_mode = OB_MODE_ALL_PAINT;
/* BRUSH SCULPT TOOL SETTINGS */
brush->size= 35; /* radius of the brush in pixels */
brush->alpha= 0.5f; /* brush strength/intensity probably variable should be renamed? */
brush->autosmooth_factor= 0.0f;
brush->crease_pinch_factor= 0.5f;
brush->sculpt_plane = SCULPT_DISP_DIR_AREA;
brush->plane_offset= 0.0f; /* how far above or below the plane that is found by averaging the faces */
brush->plane_trim= 0.5f;
brush->clone.alpha= 0.5f;
brush->normal_weight= 0.0f;
brush->flag |= BRUSH_ALPHA_PRESSURE;
/* BRUSH PAINT TOOL SETTINGS */
brush->rgb[0]= 1.0f; /* default rgb color of the brush when painting - white */
brush->rgb[1]= 1.0f;
brush->rgb[2]= 1.0f;
/* BRUSH STROKE SETTINGS */
brush->flag |= (BRUSH_SPACE|BRUSH_SPACE_ATTEN);
brush->spacing= 10; /* how far each brush dot should be spaced as a percentage of brush diameter */
brush->smooth_stroke_radius= 75;
brush->smooth_stroke_factor= 0.9f;
brush->rate= 0.1f; /* time delay between dots of paint or sculpting when doing airbrush mode */
brush->jitter= 0.0f;
/* BRUSH TEXTURE SETTINGS */
default_mtex(&brush->mtex);
brush->texture_sample_bias= 0; /* value to added to texture samples */
brush->texture_overlay_alpha= 33;
/* brush appearance */
brush->add_col[0]= 1.00; /* add mode color is light red */
brush->add_col[1]= 0.39;
brush->add_col[2]= 0.39;
brush->sub_col[0]= 0.39; /* subtract mode color is light blue */
brush->sub_col[1]= 0.39;
brush->sub_col[2]= 1.00;
}
/* Datablock add/copy/free/make_local */
Brush *add_brush(const char *name)
{
Brush *brush;
brush= alloc_libblock(&G.main->brush, ID_BR, name);
/* enable fake user by default */
brush->id.flag |= LIB_FAKEUSER;
brush_set_defaults(brush);
brush->sculpt_tool = SCULPT_TOOL_DRAW; /* sculpting defaults to the draw tool for new brushes */
/* the default alpha falloff curve */
brush_curve_preset(brush, CURVE_PRESET_SMOOTH);
return brush;
}
Brush *copy_brush(Brush *brush)
{
Brush *brushn;
brushn= copy_libblock(brush);
if (brush->mtex.tex)
id_us_plus((ID*)brush->mtex.tex);
if (brush->icon_imbuf)
brushn->icon_imbuf= IMB_dupImBuf(brush->icon_imbuf);
brushn->preview = NULL;
brushn->curve= curvemapping_copy(brush->curve);
/* enable fake user by default */
if (!(brushn->id.flag & LIB_FAKEUSER)) {
brushn->id.flag |= LIB_FAKEUSER;
brushn->id.us++;
}
return brushn;
}
/* not brush itself */
void free_brush(Brush *brush)
{
if (brush->mtex.tex)
brush->mtex.tex->id.us--;
if (brush->icon_imbuf)
IMB_freeImBuf(brush->icon_imbuf);
BKE_previewimg_free(&(brush->preview));
curvemapping_free(brush->curve);
}
static void extern_local_brush(Brush *brush)
{
id_lib_extern((ID *)brush->mtex.tex);
}
void make_local_brush(Brush *brush)
{
/* - only lib users: do nothing
* - only local users: set flag
* - mixed: make copy
*/
Main *bmain= G.main;
Scene *scene;
int local= 0, lib= 0;
if(brush->id.lib==NULL) return;
if(brush->clone.image) {
/* special case: ima always local immediately */
brush->clone.image->id.lib= NULL;
brush->clone.image->id.flag= LIB_LOCAL;
new_id(&bmain->brush, (ID *)brush->clone.image, NULL);
extern_local_brush(brush);
}
for(scene= bmain->scene.first; scene && ELEM(0, lib, local); scene=scene->id.next) {
if(paint_brush(&scene->toolsettings->imapaint.paint)==brush) {
if(scene->id.lib) lib= 1;
else local= 1;
}
}
if(local && lib==0) {
brush->id.lib= NULL;
brush->id.flag= LIB_LOCAL;
new_id(&bmain->brush, (ID *)brush, NULL);
extern_local_brush(brush);
/* enable fake user by default */
if (!(brush->id.flag & LIB_FAKEUSER)) {
brush->id.flag |= LIB_FAKEUSER;
brush->id.us++;
}
}
else if(local && lib) {
Brush *brushn= copy_brush(brush);
brushn->id.us= 1; /* only keep fake user */
brushn->id.flag |= LIB_FAKEUSER;
for(scene= bmain->scene.first; scene; scene=scene->id.next) {
if(paint_brush(&scene->toolsettings->imapaint.paint)==brush) {
if(scene->id.lib==NULL) {
paint_brush_set(&scene->toolsettings->imapaint.paint, brushn);
}
}
}
}
}
void brush_debug_print_state(Brush *br)
{
/* create a fake brush and set it to the defaults */
Brush def= {{NULL}};
brush_set_defaults(&def);
#define BR_TEST(field, t) \
if(br->field != def.field) \
printf("br->" #field " = %" #t ";\n", br->field)
#define BR_TEST_FLAG(_f) \
if((br->flag & _f) && !(def.flag & _f)) \
printf("br->flag |= " #_f ";\n"); \
else if(!(br->flag & _f) && (def.flag & _f)) \
printf("br->flag &= ~" #_f ";\n")
/* print out any non-default brush state */
BR_TEST(normal_weight, f);
BR_TEST(blend, d);
BR_TEST(size, d);
/* br->flag */
BR_TEST_FLAG(BRUSH_AIRBRUSH);
BR_TEST_FLAG(BRUSH_TORUS);
BR_TEST_FLAG(BRUSH_ALPHA_PRESSURE);
BR_TEST_FLAG(BRUSH_SIZE_PRESSURE);
BR_TEST_FLAG(BRUSH_JITTER_PRESSURE);
BR_TEST_FLAG(BRUSH_SPACING_PRESSURE);
BR_TEST_FLAG(BRUSH_FIXED_TEX);
BR_TEST_FLAG(BRUSH_RAKE);
BR_TEST_FLAG(BRUSH_ANCHORED);
BR_TEST_FLAG(BRUSH_DIR_IN);
BR_TEST_FLAG(BRUSH_SPACE);
BR_TEST_FLAG(BRUSH_SMOOTH_STROKE);
BR_TEST_FLAG(BRUSH_PERSISTENT);
BR_TEST_FLAG(BRUSH_ACCUMULATE);
BR_TEST_FLAG(BRUSH_LOCK_ALPHA);
BR_TEST_FLAG(BRUSH_ORIGINAL_NORMAL);
BR_TEST_FLAG(BRUSH_OFFSET_PRESSURE);
BR_TEST_FLAG(BRUSH_SPACE_ATTEN);
BR_TEST_FLAG(BRUSH_ADAPTIVE_SPACE);
BR_TEST_FLAG(BRUSH_LOCK_SIZE);
BR_TEST_FLAG(BRUSH_TEXTURE_OVERLAY);
BR_TEST_FLAG(BRUSH_EDGE_TO_EDGE);
BR_TEST_FLAG(BRUSH_RESTORE_MESH);
BR_TEST_FLAG(BRUSH_INVERSE_SMOOTH_PRESSURE);
BR_TEST_FLAG(BRUSH_RANDOM_ROTATION);
BR_TEST_FLAG(BRUSH_PLANE_TRIM);
BR_TEST_FLAG(BRUSH_FRONTFACE);
BR_TEST_FLAG(BRUSH_CUSTOM_ICON);
BR_TEST(jitter, f);
BR_TEST(spacing, d);
BR_TEST(smooth_stroke_radius, d);
BR_TEST(smooth_stroke_factor, f);
BR_TEST(rate, f);
BR_TEST(alpha, f);
BR_TEST(sculpt_plane, d);
BR_TEST(plane_offset, f);
BR_TEST(autosmooth_factor, f);
BR_TEST(crease_pinch_factor, f);
BR_TEST(plane_trim, f);
BR_TEST(texture_sample_bias, f);
BR_TEST(texture_overlay_alpha, d);
BR_TEST(add_col[0], f);
BR_TEST(add_col[1], f);
BR_TEST(add_col[2], f);
BR_TEST(sub_col[0], f);
BR_TEST(sub_col[1], f);
BR_TEST(sub_col[2], f);
printf("\n");
#undef BR_TEST
#undef BR_TEST_FLAG
}
void brush_reset_sculpt(Brush *br)
{
/* enable this to see any non-default
settings used by a brush:
brush_debug_print_state(br);
*/
brush_set_defaults(br);
brush_curve_preset(br, CURVE_PRESET_SMOOTH);
switch(br->sculpt_tool) {
case SCULPT_TOOL_CLAY:
br->flag |= BRUSH_FRONTFACE;
break;
case SCULPT_TOOL_CREASE:
br->flag |= BRUSH_DIR_IN;
br->alpha = 0.25;
break;
case SCULPT_TOOL_FILL:
br->add_col[1] = 1;
br->sub_col[0] = 0.25;
br->sub_col[1] = 1;
break;
case SCULPT_TOOL_FLATTEN:
br->add_col[1] = 1;
br->sub_col[0] = 0.25;
br->sub_col[1] = 1;
break;
case SCULPT_TOOL_INFLATE:
br->add_col[0] = 0.750000;
br->add_col[1] = 0.750000;
br->add_col[2] = 0.750000;
br->sub_col[0] = 0.250000;
br->sub_col[1] = 0.250000;
br->sub_col[2] = 0.250000;
break;
case SCULPT_TOOL_NUDGE:
br->add_col[0] = 0.250000;
br->add_col[1] = 1.000000;
br->add_col[2] = 0.250000;
break;
case SCULPT_TOOL_PINCH:
br->add_col[0] = 0.750000;
br->add_col[1] = 0.750000;
br->add_col[2] = 0.750000;
br->sub_col[0] = 0.250000;
br->sub_col[1] = 0.250000;
br->sub_col[2] = 0.250000;
break;
case SCULPT_TOOL_SCRAPE:
br->add_col[1] = 1.000000;
br->sub_col[0] = 0.250000;
br->sub_col[1] = 1.000000;
break;
case SCULPT_TOOL_ROTATE:
break;
case SCULPT_TOOL_SMOOTH:
br->flag &= ~BRUSH_SPACE_ATTEN;
br->spacing = 5;
br->add_col[0] = 0.750000;
br->add_col[1] = 0.750000;
br->add_col[2] = 0.750000;
break;
case SCULPT_TOOL_GRAB:
case SCULPT_TOOL_SNAKE_HOOK:
case SCULPT_TOOL_THUMB:
br->size = 75;
br->flag &= ~BRUSH_ALPHA_PRESSURE;
br->flag &= ~BRUSH_SPACE;
br->flag &= ~BRUSH_SPACE_ATTEN;
br->add_col[0] = 0.250000;
br->add_col[1] = 1.000000;
br->add_col[2] = 0.250000;
break;
default:
break;
}
}
/* Library Operations */
void brush_curve_preset(Brush *b, /*CurveMappingPreset*/int preset)
{
CurveMap *cm = NULL;
if(!b->curve)
b->curve = curvemapping_add(1, 0, 0, 1, 1);
cm = b->curve->cm;
cm->flag &= ~CUMA_EXTEND_EXTRAPOLATE;
b->curve->preset = preset;
curvemap_reset(cm, &b->curve->clipr, b->curve->preset, CURVEMAP_SLOPE_NEGATIVE);
curvemapping_changed(b->curve, 0);
}
int brush_texture_set_nr(Brush *brush, int nr)
{
ID *idtest, *id=NULL;
id= (ID *)brush->mtex.tex;
idtest= (ID*)BLI_findlink(&G.main->tex, nr-1);
if(idtest==NULL) { /* new tex */
if(id) idtest= (ID *)copy_texture((Tex *)id);
else idtest= (ID *)add_texture("Tex");
idtest->us--;
}
if(idtest!=id) {
brush_texture_delete(brush);
brush->mtex.tex= (Tex*)idtest;
id_us_plus(idtest);
return 1;
}
return 0;
}
int brush_texture_delete(Brush *brush)
{
if(brush->mtex.tex)
brush->mtex.tex->id.us--;
return 1;
}
int brush_clone_image_set_nr(Brush *brush, int nr)
{
if(brush && nr > 0) {
Image *ima= (Image*)BLI_findlink(&G.main->image, nr-1);
if(ima) {
brush_clone_image_delete(brush);
brush->clone.image= ima;
id_us_plus(&ima->id);
brush->clone.offset[0]= brush->clone.offset[1]= 0.0f;
return 1;
}
}
return 0;
}
int brush_clone_image_delete(Brush *brush)
{
if (brush && brush->clone.image) {
brush->clone.image->id.us--;
brush->clone.image= NULL;
return 1;
}
return 0;
}
/* Brush Sampling */
void brush_sample_tex(Brush *brush, float *xy, float *rgba, const int thread)
{
MTex *mtex= &brush->mtex;
if (mtex && mtex->tex) {
float co[3], tin, tr, tg, tb, ta;
int hasrgb;
const int radius= brush_size(brush);
co[0]= xy[0]/radius;
co[1]= xy[1]/radius;
co[2]= 0.0f;
hasrgb= externtex(mtex, co, &tin, &tr, &tg, &tb, &ta, thread);
if (hasrgb) {
rgba[0]= tr;
rgba[1]= tg;
rgba[2]= tb;
rgba[3]= ta;
}
else {
rgba[0]= tin;
rgba[1]= tin;
rgba[2]= tin;
rgba[3]= 1.0f;
}
}
else if (rgba)
rgba[0]= rgba[1]= rgba[2]= rgba[3]= 1.0f;
}
void brush_imbuf_new(Brush *brush, short flt, short texfall, int bufsize, ImBuf **outbuf, int use_color_correction)
{
ImBuf *ibuf;
float xy[2], dist, rgba[4], *dstf;
int x, y, rowbytes, xoff, yoff, imbflag;
const int radius= brush_size(brush);
char *dst, crgb[3];
const float alpha= brush_alpha(brush);
float brush_rgb[3];
imbflag= (flt)? IB_rectfloat: IB_rect;
xoff = -bufsize/2.0f + 0.5f;
yoff = -bufsize/2.0f + 0.5f;
rowbytes= bufsize*4;
if (*outbuf)
ibuf= *outbuf;
else
ibuf= IMB_allocImBuf(bufsize, bufsize, 32, imbflag);
if (flt) {
copy_v3_v3(brush_rgb, brush->rgb);
if(use_color_correction){
srgb_to_linearrgb_v3_v3(brush_rgb, brush_rgb);
}
for (y=0; y < ibuf->y; y++) {
dstf = ibuf->rect_float + y*rowbytes;
for (x=0; x < ibuf->x; x++, dstf+=4) {
xy[0] = x + xoff;
xy[1] = y + yoff;
if (texfall == 0) {
dist = sqrt(xy[0]*xy[0] + xy[1]*xy[1]);
copy_v3_v3(dstf, brush_rgb);
dstf[3]= alpha*brush_curve_strength_clamp(brush, dist, radius);
}
else if (texfall == 1) {
brush_sample_tex(brush, xy, dstf, 0);
}
else {
dist = sqrt(xy[0]*xy[0] + xy[1]*xy[1]);
brush_sample_tex(brush, xy, rgba, 0);
mul_v3_v3v3(dstf, rgba, brush_rgb);
dstf[3] = rgba[3]*alpha*brush_curve_strength_clamp(brush, dist, radius);
}
}
}
}
else {
crgb[0]= FTOCHAR(brush->rgb[0]);
crgb[1]= FTOCHAR(brush->rgb[1]);
crgb[2]= FTOCHAR(brush->rgb[2]);
for (y=0; y < ibuf->y; y++) {
dst = (char*)ibuf->rect + y*rowbytes;
for (x=0; x < ibuf->x; x++, dst+=4) {
xy[0] = x + xoff;
xy[1] = y + yoff;
if (texfall == 0) {
dist = sqrt(xy[0]*xy[0] + xy[1]*xy[1]);
dst[0]= crgb[0];
dst[1]= crgb[1];
dst[2]= crgb[2];
dst[3]= FTOCHAR(alpha*brush_curve_strength(brush, dist, radius));
}
else if (texfall == 1) {
brush_sample_tex(brush, xy, rgba, 0);
dst[0]= FTOCHAR(rgba[0]);
dst[1]= FTOCHAR(rgba[1]);
dst[2]= FTOCHAR(rgba[2]);
dst[3]= FTOCHAR(rgba[3]);
}
else if (texfall == 2) {
dist = sqrt(xy[0]*xy[0] + xy[1]*xy[1]);
brush_sample_tex(brush, xy, rgba, 0);
dst[0] = FTOCHAR(rgba[0]*brush->rgb[0]);
dst[1] = FTOCHAR(rgba[1]*brush->rgb[1]);
dst[2] = FTOCHAR(rgba[2]*brush->rgb[2]);
dst[3] = FTOCHAR(rgba[3]*alpha*brush_curve_strength_clamp(brush, dist, radius));
} else {
dist = sqrt(xy[0]*xy[0] + xy[1]*xy[1]);
brush_sample_tex(brush, xy, rgba, 0);
dst[0]= crgb[0];
dst[1]= crgb[1];
dst[2]= crgb[2];
dst[3] = FTOCHAR(rgba[3]*alpha*brush_curve_strength_clamp(brush, dist, radius));
}
}
}
}
*outbuf= ibuf;
}
/* Brush Painting */
typedef struct BrushPainterCache {
short enabled;
int size; /* size override, if 0 uses 2*brush_size(brush) */
short flt; /* need float imbuf? */
short texonly; /* no alpha, color or fallof, only texture in imbuf */
int lastsize;
float lastalpha;
float lastjitter;
ImBuf *ibuf;
ImBuf *texibuf;
ImBuf *maskibuf;
} BrushPainterCache;
struct BrushPainter {
Brush *brush;
float lastmousepos[2]; /* mouse position of last paint call */
float accumdistance; /* accumulated distance of brush since last paint op */
float lastpaintpos[2]; /* position of last paint op */
float startpaintpos[2]; /* position of first paint */
double accumtime; /* accumulated time since last paint op (airbrush) */
double lasttime; /* time of last update */
float lastpressure;
short firsttouch; /* first paint op */
float startsize;
float startalpha;
float startjitter;
float startspacing;
BrushPainterCache cache;
};
BrushPainter *brush_painter_new(Brush *brush)
{
BrushPainter *painter= MEM_callocN(sizeof(BrushPainter), "BrushPainter");
painter->brush= brush;
painter->firsttouch= 1;
painter->cache.lastsize= -1; /* force ibuf create in refresh */
painter->startsize = brush_size(brush);
painter->startalpha = brush_alpha(brush);
painter->startjitter = brush->jitter;
painter->startspacing = brush->spacing;
return painter;
}
void brush_painter_require_imbuf(BrushPainter *painter, short flt, short texonly, int size)
{
if ((painter->cache.flt != flt) || (painter->cache.size != size) ||
((painter->cache.texonly != texonly) && texonly)) {
if (painter->cache.ibuf) IMB_freeImBuf(painter->cache.ibuf);
if (painter->cache.maskibuf) IMB_freeImBuf(painter->cache.maskibuf);
painter->cache.ibuf= painter->cache.maskibuf= NULL;
painter->cache.lastsize= -1; /* force ibuf create in refresh */
}
if (painter->cache.flt != flt) {
if (painter->cache.texibuf) IMB_freeImBuf(painter->cache.texibuf);
painter->cache.texibuf= NULL;
painter->cache.lastsize= -1; /* force ibuf create in refresh */
}
painter->cache.size= size;
painter->cache.flt= flt;
painter->cache.texonly= texonly;
painter->cache.enabled= 1;
}
void brush_painter_free(BrushPainter *painter)
{
Brush *brush = painter->brush;
brush_set_size(brush, painter->startsize);
brush_set_alpha(brush, painter->startalpha);
brush->jitter = painter->startjitter;
brush->spacing = painter->startspacing;
if (painter->cache.ibuf) IMB_freeImBuf(painter->cache.ibuf);
if (painter->cache.texibuf) IMB_freeImBuf(painter->cache.texibuf);
if (painter->cache.maskibuf) IMB_freeImBuf(painter->cache.maskibuf);
MEM_freeN(painter);
}
static void brush_painter_do_partial(BrushPainter *painter, ImBuf *oldtexibuf, int x, int y, int w, int h, int xt, int yt, float *pos)
{
Brush *brush= painter->brush;
ImBuf *ibuf, *maskibuf, *texibuf;
float *bf, *mf, *tf, *otf=NULL, xoff, yoff, xy[2], rgba[4];
char *b, *m, *t, *ot= NULL;
int dotexold, origx= x, origy= y;
const int radius= brush_size(brush);
xoff = -radius + 0.5f;
yoff = -radius + 0.5f;
xoff += (int)pos[0] - (int)painter->startpaintpos[0];
yoff += (int)pos[1] - (int)painter->startpaintpos[1];
ibuf = painter->cache.ibuf;
texibuf = painter->cache.texibuf;
maskibuf = painter->cache.maskibuf;
dotexold = (oldtexibuf != NULL);
/* not sure if it's actually needed or it's a mistake in coords/sizes
calculation in brush_painter_fixed_tex_partial_update(), but without this
limitation memory gets corrupted at fast strokes with quite big spacing (sergey) */
w = MIN2(w, ibuf->x);
h = MIN2(h, ibuf->y);
if (painter->cache.flt) {
for (; y < h; y++) {
bf = ibuf->rect_float + (y*ibuf->x + origx)*4;
tf = texibuf->rect_float + (y*texibuf->x + origx)*4;
mf = maskibuf->rect_float + (y*maskibuf->x + origx)*4;
if (dotexold)
otf = oldtexibuf->rect_float + ((y - origy + yt)*oldtexibuf->x + xt)*4;
for (x=origx; x < w; x++, bf+=4, mf+=4, tf+=4) {
if (dotexold) {
copy_v3_v3(tf, otf);
tf[3] = otf[3];
otf += 4;
}
else {
xy[0] = x + xoff;
xy[1] = y + yoff;
brush_sample_tex(brush, xy, tf, 0);
}
bf[0] = tf[0]*mf[0];
bf[1] = tf[1]*mf[1];
bf[2] = tf[2]*mf[2];
bf[3] = tf[3]*mf[3];
}
}
}
else {
for (; y < h; y++) {
b = (char*)ibuf->rect + (y*ibuf->x + origx)*4;
t = (char*)texibuf->rect + (y*texibuf->x + origx)*4;
m = (char*)maskibuf->rect + (y*maskibuf->x + origx)*4;
if (dotexold)
ot = (char*)oldtexibuf->rect + ((y - origy + yt)*oldtexibuf->x + xt)*4;
for (x=origx; x < w; x++, b+=4, m+=4, t+=4) {
if (dotexold) {
t[0] = ot[0];
t[1] = ot[1];
t[2] = ot[2];
t[3] = ot[3];
ot += 4;
}
else {
xy[0] = x + xoff;
xy[1] = y + yoff;
brush_sample_tex(brush, xy, rgba, 0);
t[0]= FTOCHAR(rgba[0]);
t[1]= FTOCHAR(rgba[1]);
t[2]= FTOCHAR(rgba[2]);
t[3]= FTOCHAR(rgba[3]);
}
b[0] = t[0]*m[0]/255;
b[1] = t[1]*m[1]/255;
b[2] = t[2]*m[2]/255;
b[3] = t[3]*m[3]/255;
}
}
}
}
static void brush_painter_fixed_tex_partial_update(BrushPainter *painter, float *pos)
{
Brush *brush= painter->brush;
BrushPainterCache *cache= &painter->cache;
ImBuf *oldtexibuf, *ibuf;
int imbflag, destx, desty, srcx, srcy, w, h, x1, y1, x2, y2;
const int diameter= 2*brush_size(brush);
imbflag= (cache->flt)? IB_rectfloat: IB_rect;
if (!cache->ibuf)
cache->ibuf= IMB_allocImBuf(diameter, diameter, 32, imbflag);
ibuf= cache->ibuf;
oldtexibuf= cache->texibuf;
cache->texibuf= IMB_allocImBuf(diameter, diameter, 32, imbflag);
if (oldtexibuf) {
srcx= srcy= 0;
destx= (int)painter->lastpaintpos[0] - (int)pos[0];
desty= (int)painter->lastpaintpos[1] - (int)pos[1];
w= oldtexibuf->x;
h= oldtexibuf->y;
IMB_rectclip(cache->texibuf, oldtexibuf, &destx, &desty, &srcx, &srcy, &w, &h);
}
else {
srcx= srcy= 0;
destx= desty= 0;
w= h= 0;
}
x1= destx;
y1= desty;
x2= destx+w;
y2= desty+h;
/* blend existing texture in new position */
if ((x1 < x2) && (y1 < y2))
brush_painter_do_partial(painter, oldtexibuf, x1, y1, x2, y2, srcx, srcy, pos);
if (oldtexibuf)
IMB_freeImBuf(oldtexibuf);
/* sample texture in new areas */
if ((0 < x1) && (0 < ibuf->y))
brush_painter_do_partial(painter, NULL, 0, 0, x1, ibuf->y, 0, 0, pos);
if ((x2 < ibuf->x) && (0 < ibuf->y))
brush_painter_do_partial(painter, NULL, x2, 0, ibuf->x, ibuf->y, 0, 0, pos);
if ((x1 < x2) && (0 < y1))
brush_painter_do_partial(painter, NULL, x1, 0, x2, y1, 0, 0, pos);
if ((x1 < x2) && (y2 < ibuf->y))
brush_painter_do_partial(painter, NULL, x1, y2, x2, ibuf->y, 0, 0, pos);
}
static void brush_painter_refresh_cache(BrushPainter *painter, float *pos, int use_color_correction)
{
Brush *brush= painter->brush;
BrushPainterCache *cache= &painter->cache;
MTex *mtex= &brush->mtex;
int size;
short flt;
const int diameter= 2*brush_size(brush);
const float alpha= brush_alpha(brush);
if (diameter != cache->lastsize ||
alpha != cache->lastalpha ||
brush->jitter != cache->lastjitter)
{
if (cache->ibuf) {
IMB_freeImBuf(cache->ibuf);
cache->ibuf= NULL;
}
if (cache->maskibuf) {
IMB_freeImBuf(cache->maskibuf);
cache->maskibuf= NULL;
}
flt= cache->flt;
size= (cache->size)? cache->size: diameter;
if (brush->flag & BRUSH_FIXED_TEX) {
brush_imbuf_new(brush, flt, 3, size, &cache->maskibuf, use_color_correction);
brush_painter_fixed_tex_partial_update(painter, pos);
}
else
brush_imbuf_new(brush, flt, 2, size, &cache->ibuf, use_color_correction);
cache->lastsize= diameter;
cache->lastalpha= alpha;
cache->lastjitter= brush->jitter;
}
else if ((brush->flag & BRUSH_FIXED_TEX) && mtex && mtex->tex) {
int dx = (int)painter->lastpaintpos[0] - (int)pos[0];
int dy = (int)painter->lastpaintpos[1] - (int)pos[1];
if ((dx != 0) || (dy != 0))
brush_painter_fixed_tex_partial_update(painter, pos);
}
}
void brush_painter_break_stroke(BrushPainter *painter)
{
painter->firsttouch= 1;
}
static void brush_apply_pressure(BrushPainter *painter, Brush *brush, float pressure)
{
if (brush_use_alpha_pressure(brush))
brush_set_alpha(brush, MAX2(0.0f, painter->startalpha*pressure));
if (brush_use_size_pressure(brush))
brush_set_size(brush, MAX2(1.0f, painter->startsize*pressure));
if (brush->flag & BRUSH_JITTER_PRESSURE)
brush->jitter = MAX2(0.0f, painter->startjitter*pressure);
if (brush->flag & BRUSH_SPACING_PRESSURE)
brush->spacing = MAX2(1.0f, painter->startspacing*(1.5f-pressure));
}
void brush_jitter_pos(Brush *brush, float pos[2], float jitterpos[2])
{
int use_jitter= brush->jitter != 0;
/* jitter-ed brush gives wierd and unpredictable result for this
kinds of stroke, so manyally disable jitter usage (sergey) */
use_jitter&= (brush->flag & (BRUSH_RESTORE_MESH|BRUSH_ANCHORED)) == 0;
if(use_jitter){
float rand_pos[2];
const int radius= brush_size(brush);
const int diameter= 2*radius;
// find random position within a circle of diameter 1
do {
rand_pos[0] = BLI_frand()-0.5f;
rand_pos[1] = BLI_frand()-0.5f;
} while (len_v2(rand_pos) > 0.5f);
jitterpos[0] = pos[0] + 2*rand_pos[0]*diameter*brush->jitter;
jitterpos[1] = pos[1] + 2*rand_pos[1]*diameter*brush->jitter;
}
else {
copy_v2_v2(jitterpos, pos);
}
}
int brush_painter_paint(BrushPainter *painter, BrushFunc func, float *pos, double time, float pressure, void *user, int use_color_correction)
{
Brush *brush= painter->brush;
int totpaintops= 0;
if (pressure == 0.0f) {
if(painter->lastpressure) // XXX - hack, operator misses
pressure= painter->lastpressure;
else
pressure = 1.0f; /* zero pressure == not using tablet */
}
if (painter->firsttouch) {
/* paint exactly once on first touch */
painter->startpaintpos[0]= pos[0];
painter->startpaintpos[1]= pos[1];
brush_apply_pressure(painter, brush, pressure);
if (painter->cache.enabled)
brush_painter_refresh_cache(painter, pos, use_color_correction);
totpaintops += func(user, painter->cache.ibuf, pos, pos);
painter->lasttime= time;
painter->firsttouch= 0;
painter->lastpaintpos[0]= pos[0];
painter->lastpaintpos[1]= pos[1];
}
#if 0
else if (painter->brush->flag & BRUSH_AIRBRUSH) {
float spacing, step, paintpos[2], dmousepos[2], len;
double starttime, curtime= time;
/* compute brush spacing adapted to brush size */
spacing= brush->rate; //radius*brush->spacing*0.01f;
/* setup starting time, direction vector and accumulated time */
starttime= painter->accumtime;
sub_v2_v2v2(dmousepos, pos, painter->lastmousepos);
len= normalize_v2(dmousepos);
painter->accumtime += curtime - painter->lasttime;
/* do paint op over unpainted time distance */
while (painter->accumtime >= spacing) {
step= (spacing - starttime)*len;
paintpos[0]= painter->lastmousepos[0] + dmousepos[0]*step;
paintpos[1]= painter->lastmousepos[1] + dmousepos[1]*step;
if (painter->cache.enabled)
brush_painter_refresh_cache(painter);
totpaintops += func(user, painter->cache.ibuf,
painter->lastpaintpos, paintpos);
painter->lastpaintpos[0]= paintpos[0];
painter->lastpaintpos[1]= paintpos[1];
painter->accumtime -= spacing;
starttime -= spacing;
}
painter->lasttime= curtime;
}
#endif
else {
float startdistance, spacing, step, paintpos[2], dmousepos[2], finalpos[2];
float t, len, press;
const int radius= brush_size(brush);
/* compute brush spacing adapted to brush radius, spacing may depend
on pressure, so update it */
brush_apply_pressure(painter, brush, painter->lastpressure);
spacing= MAX2(1.0f, radius)*brush->spacing*0.01f;
/* setup starting distance, direction vector and accumulated distance */
startdistance= painter->accumdistance;
sub_v2_v2v2(dmousepos, pos, painter->lastmousepos);
len= normalize_v2(dmousepos);
painter->accumdistance += len;
if (brush->flag & BRUSH_SPACE) {
/* do paint op over unpainted distance */
while ((len > 0.0f) && (painter->accumdistance >= spacing)) {
step= spacing - startdistance;
paintpos[0]= painter->lastmousepos[0] + dmousepos[0]*step;
paintpos[1]= painter->lastmousepos[1] + dmousepos[1]*step;
t = step/len;
press= (1.0f-t)*painter->lastpressure + t*pressure;
brush_apply_pressure(painter, brush, press);
spacing= MAX2(1.0f, radius)*brush->spacing*0.01f;
brush_jitter_pos(brush, paintpos, finalpos);
if (painter->cache.enabled)
brush_painter_refresh_cache(painter, finalpos, use_color_correction);
totpaintops +=
func(user, painter->cache.ibuf, painter->lastpaintpos, finalpos);
painter->lastpaintpos[0]= paintpos[0];
painter->lastpaintpos[1]= paintpos[1];
painter->accumdistance -= spacing;
startdistance -= spacing;
}
} else {
brush_jitter_pos(brush, pos, finalpos);
if (painter->cache.enabled)
brush_painter_refresh_cache(painter, finalpos, use_color_correction);
totpaintops += func(user, painter->cache.ibuf, pos, finalpos);
painter->lastpaintpos[0]= pos[0];
painter->lastpaintpos[1]= pos[1];
painter->accumdistance= 0;
}
/* do airbrush paint ops, based on the number of paint ops left over
from regular painting. this is a temporary solution until we have
accurate time stamps for mouse move events */
if (brush->flag & BRUSH_AIRBRUSH) {
double curtime= time;
double painttime= brush->rate*totpaintops;
painter->accumtime += curtime - painter->lasttime;
if (painter->accumtime <= painttime)
painter->accumtime= 0.0;
else
painter->accumtime -= painttime;
while (painter->accumtime >= (double)brush->rate) {
brush_apply_pressure(painter, brush, pressure);
brush_jitter_pos(brush, pos, finalpos);
if (painter->cache.enabled)
brush_painter_refresh_cache(painter, finalpos, use_color_correction);
totpaintops +=
func(user, painter->cache.ibuf, painter->lastmousepos, finalpos);
painter->accumtime -= (double)brush->rate;
}
painter->lasttime= curtime;
}
}
painter->lastmousepos[0]= pos[0];
painter->lastmousepos[1]= pos[1];
painter->lastpressure= pressure;
brush_set_alpha(brush, painter->startalpha);
brush_set_size(brush, painter->startsize);
brush->jitter = painter->startjitter;
brush->spacing = painter->startspacing;
return totpaintops;
}
/* Uses the brush curve control to find a strength value between 0 and 1 */
float brush_curve_strength_clamp(Brush *br, float p, const float len)
{
if(p >= len) return 0;
else p= p/len;
p= curvemapping_evaluateF(br->curve, 0, p);
if(p < 0.0f) p= 0.0f;
else if(p > 1.0f) p= 1.0f;
return p;
}
/* same as above but can return negative values if the curve enables
* used for sculpt only */
float brush_curve_strength(Brush *br, float p, const float len)
{
if(p >= len)
p= 1.0f;
else
p= p/len;
return curvemapping_evaluateF(br->curve, 0, p);
}
/* TODO: should probably be unified with BrushPainter stuff? */
unsigned int *brush_gen_texture_cache(Brush *br, int half_side)
{
unsigned int *texcache = NULL;
MTex *mtex = &br->mtex;
TexResult texres= {0};
int hasrgb, 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");
BKE_image_get_ibuf(mtex->tex->ima, NULL);
/*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 */
hasrgb = multitex_ext(mtex->tex, co, NULL, NULL, 0, &texres);
/* if the texture gave an RGB value, we assume it didn't give a valid
* intensity, so calculate one (formula from do_material_tex).
* if the texture didn't give an RGB value, copy the intensity across
*/
if(hasrgb & TEX_RGB)
texres.tin = (0.35f * texres.tr + 0.45f *
texres.tg + 0.2f * texres.tb);
texres.tin = texres.tin * 255.0f;
((char*)texcache)[(iy*side+ix)*4] = (char)texres.tin;
((char*)texcache)[(iy*side+ix)*4+1] = (char)texres.tin;
((char*)texcache)[(iy*side+ix)*4+2] = (char)texres.tin;
((char*)texcache)[(iy*side+ix)*4+3] = (char)texres.tin;
}
}
}
return texcache;
}
/**** Radial Control ****/
struct ImBuf *brush_gen_radial_control_imbuf(Brush *br)
{
ImBuf *im = MEM_callocN(sizeof(ImBuf), "radial control texture");
unsigned int *texcache;
int side = 128;
int half = side / 2;
int i, j;
texcache = brush_gen_texture_cache(br, half);
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= sqrt(pow(i - half, 2) + pow(j - half, 2));
im->rect_float[i*side + j]= brush_curve_strength_clamp(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;
}
/* Unified Size and Strength */
static void set_unified_settings(Brush *brush, short flag, int value)
{
Scene *sce;
for (sce= G.main->scene.first; sce; sce= sce->id.next) {
if (sce->toolsettings &&
ELEM4(brush,
paint_brush(&(sce->toolsettings->imapaint.paint)),
paint_brush(&(sce->toolsettings->vpaint->paint)),
paint_brush(&(sce->toolsettings->wpaint->paint)),
paint_brush(&(sce->toolsettings->sculpt->paint))))
{
if (value)
sce->toolsettings->sculpt_paint_settings |= flag;
else
sce->toolsettings->sculpt_paint_settings &= ~flag;
}
}
}
static short unified_settings(Brush *brush)
{
Scene *sce;
for (sce= G.main->scene.first; sce; sce= sce->id.next) {
if (sce->toolsettings &&
ELEM4(brush,
paint_brush(&(sce->toolsettings->imapaint.paint)),
paint_brush(&(sce->toolsettings->vpaint->paint)),
paint_brush(&(sce->toolsettings->wpaint->paint)),
paint_brush(&(sce->toolsettings->sculpt->paint))))
{
return sce->toolsettings->sculpt_paint_settings;
}
}
return 0;
}
// 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 ussual 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 anycase, a better solution is needed to prevent
// inconsistency.
static void set_unified_size(Brush *brush, int value)
{
Scene *sce;
for (sce= G.main->scene.first; sce; sce= sce->id.next) {
if (sce->toolsettings &&
ELEM4(brush,
paint_brush(&(sce->toolsettings->imapaint.paint)),
paint_brush(&(sce->toolsettings->vpaint->paint)),
paint_brush(&(sce->toolsettings->wpaint->paint)),
paint_brush(&(sce->toolsettings->sculpt->paint))))
{
sce->toolsettings->sculpt_paint_unified_size= value;
}
}
}
static int unified_size(Brush *brush)
{
Scene *sce;
for (sce= G.main->scene.first; sce; sce= sce->id.next) {
if (sce->toolsettings &&
ELEM4(brush,
paint_brush(&(sce->toolsettings->imapaint.paint)),
paint_brush(&(sce->toolsettings->vpaint->paint)),
paint_brush(&(sce->toolsettings->wpaint->paint)),
paint_brush(&(sce->toolsettings->sculpt->paint))))
{
return sce->toolsettings->sculpt_paint_unified_size;
}
}
return 35; // XXX magic number
}
static void set_unified_alpha(Brush *brush, float value)
{
Scene *sce;
for (sce= G.main->scene.first; sce; sce= sce->id.next) {
if (sce->toolsettings &&
ELEM4(brush,
paint_brush(&(sce->toolsettings->imapaint.paint)),
paint_brush(&(sce->toolsettings->vpaint->paint)),
paint_brush(&(sce->toolsettings->wpaint->paint)),
paint_brush(&(sce->toolsettings->sculpt->paint))))
{
sce->toolsettings->sculpt_paint_unified_alpha= value;
}
}
}
static float unified_alpha(Brush *brush)
{
Scene *sce;
for (sce= G.main->scene.first; sce; sce= sce->id.next) {
if (sce->toolsettings &&
ELEM4(brush,
paint_brush(&(sce->toolsettings->imapaint.paint)),
paint_brush(&(sce->toolsettings->vpaint->paint)),
paint_brush(&(sce->toolsettings->wpaint->paint)),
paint_brush(&(sce->toolsettings->sculpt->paint))))
{
return sce->toolsettings->sculpt_paint_unified_alpha;
}
}
return 0.5f; // XXX magic number
}
static void set_unified_unprojected_radius(Brush *brush, float value)
{
Scene *sce;
for (sce= G.main->scene.first; sce; sce= sce->id.next) {
if (sce->toolsettings &&
ELEM4(brush,
paint_brush(&(sce->toolsettings->imapaint.paint)),
paint_brush(&(sce->toolsettings->vpaint->paint)),
paint_brush(&(sce->toolsettings->wpaint->paint)),
paint_brush(&(sce->toolsettings->sculpt->paint))))
{
sce->toolsettings->sculpt_paint_unified_unprojected_radius= value;
}
}
}
static float unified_unprojected_radius(Brush *brush)
{
Scene *sce;
for (sce= G.main->scene.first; sce; sce= sce->id.next) {
if (sce->toolsettings &&
ELEM4(brush,
paint_brush(&(sce->toolsettings->imapaint.paint)),
paint_brush(&(sce->toolsettings->vpaint->paint)),
paint_brush(&(sce->toolsettings->wpaint->paint)),
paint_brush(&(sce->toolsettings->sculpt->paint))))
{
return sce->toolsettings->sculpt_paint_unified_unprojected_radius;
}
}
return 0.125f; // XXX magic number
}
void brush_set_size(Brush *brush, int size)
{
if (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_SIZE)
set_unified_size(brush, size);
else
brush->size= size;
//WM_main_add_notifier(NC_BRUSH|NA_EDITED, brush);
}
int brush_size(Brush *brush)
{
return (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_SIZE) ? unified_size(brush) : brush->size;
}
void brush_set_use_locked_size(Brush *brush, int value)
{
if (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_SIZE) {
set_unified_settings(brush, SCULPT_PAINT_UNIFIED_LOCK_BRUSH_SIZE, value);
}
else {
if (value)
brush->flag |= BRUSH_LOCK_SIZE;
else
brush->flag &= ~BRUSH_LOCK_SIZE;
}
//WM_main_add_notifier(NC_BRUSH|NA_EDITED, brush);
}
int brush_use_locked_size(Brush *brush)
{
return (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_SIZE) ? (unified_settings(brush) & SCULPT_PAINT_UNIFIED_LOCK_BRUSH_SIZE) : (brush->flag & BRUSH_LOCK_SIZE);
}
void brush_set_use_size_pressure(Brush *brush, int value)
{
if (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_SIZE) {
set_unified_settings(brush, SCULPT_PAINT_UNIFIED_SIZE_PRESSURE, value);
}
else {
if (value)
brush->flag |= BRUSH_SIZE_PRESSURE;
else
brush->flag &= ~BRUSH_SIZE_PRESSURE;
}
//WM_main_add_notifier(NC_BRUSH|NA_EDITED, brush);
}
int brush_use_size_pressure(Brush *brush)
{
return (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_SIZE) ? (unified_settings(brush) & SCULPT_PAINT_UNIFIED_SIZE_PRESSURE) : (brush->flag & BRUSH_SIZE_PRESSURE);
}
void brush_set_use_alpha_pressure(Brush *brush, int value)
{
if (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_ALPHA) {
set_unified_settings(brush, SCULPT_PAINT_UNIFIED_ALPHA_PRESSURE, value);
}
else {
if (value)
brush->flag |= BRUSH_ALPHA_PRESSURE;
else
brush->flag &= ~BRUSH_ALPHA_PRESSURE;
}
//WM_main_add_notifier(NC_BRUSH|NA_EDITED, brush);
}
int brush_use_alpha_pressure(Brush *brush)
{
return (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_ALPHA) ? (unified_settings(brush) & SCULPT_PAINT_UNIFIED_ALPHA_PRESSURE) : (brush->flag & BRUSH_ALPHA_PRESSURE);
}
void brush_set_unprojected_radius(Brush *brush, float unprojected_radius)
{
if (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_SIZE)
set_unified_unprojected_radius(brush, unprojected_radius);
else
brush->unprojected_radius= unprojected_radius;
//WM_main_add_notifier(NC_BRUSH|NA_EDITED, brush);
}
float brush_unprojected_radius(Brush *brush)
{
return (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_SIZE) ? unified_unprojected_radius(brush) : brush->unprojected_radius;
}
void brush_set_alpha(Brush *brush, float alpha)
{
if (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_ALPHA)
set_unified_alpha(brush, alpha);
else
brush->alpha= alpha;
//WM_main_add_notifier(NC_BRUSH|NA_EDITED, brush);
}
float brush_alpha(Brush *brush)
{
return (unified_settings(brush) & SCULPT_PAINT_USE_UNIFIED_ALPHA) ? unified_alpha(brush) : brush->alpha;
}