diff options
Diffstat (limited to 'source/blender/nodes/composite/nodes/node_composite_diffMatte.c')
| -rw-r--r-- | source/blender/nodes/composite/nodes/node_composite_diffMatte.c | 97 |
1 files changed, 50 insertions, 47 deletions
diff --git a/source/blender/nodes/composite/nodes/node_composite_diffMatte.c b/source/blender/nodes/composite/nodes/node_composite_diffMatte.c index 027786d8b22..5dea0e1c067 100644 --- a/source/blender/nodes/composite/nodes/node_composite_diffMatte.c +++ b/source/blender/nodes/composite/nodes/node_composite_diffMatte.c @@ -1,33 +1,33 @@ /* - * ***** 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) 2006 Blender Foundation. - * All rights reserved. - * - * The Original Code is: all of this file. - * - * Contributor(s): Bob Holcomb - * - * ***** END GPL LICENSE BLOCK ***** - */ +* ***** 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) 2006 Blender Foundation. +* All rights reserved. +* +* The Original Code is: all of this file. +* +* Contributor(s): Bob Holcomb +* +* ***** END GPL LICENSE BLOCK ***** +*/ /** \file blender/nodes/composite/nodes/node_composite_diffMatte.c - * \ingroup cmpnodes - */ +* \ingroup cmpnodes +*/ #include "node_composite_util.h" @@ -49,39 +49,42 @@ static void do_diff_matte(bNode *node, float *outColor, float *inColor1, float * { NodeChroma *c= (NodeChroma *)node->storage; float tolerence=c->t1; - float falloff=c->t2; + float fper=c->t2; + /* get falloff amount over tolerence size */ + float falloff=(1.0f-fper) * tolerence; float difference; float alpha; + float maxInputAlpha; + /* average together the distances */ difference= fabs(inColor2[0]-inColor1[0]) + - fabs(inColor2[1]-inColor1[1]) + - fabs(inColor2[2]-inColor1[2]); - - /*average together the distances*/ + fabs(inColor2[1]-inColor1[1]) + + fabs(inColor2[2]-inColor1[2]); difference=difference/3.0f; copy_v3_v3(outColor, inColor1); - /*make 100% transparent*/ - if (difference < tolerence) { - outColor[3]=0.0; - } - /*in the falloff region, make partially transparent */ - else if (difference < falloff+tolerence) { - difference=difference-tolerence; - alpha=difference/falloff; - /*only change if more transparent than before */ - if (alpha < inColor1[3]) { + if (difference <= tolerence) { + if(difference<=falloff) { + alpha=0.0f; + } + else{ + /* alpha as percent (distance / tolerance), each modified by falloff amount (in pixels)*/ + alpha=(difference-falloff)/(tolerence-falloff); + } + + /*only change if more transparent than either image */ + maxInputAlpha=maxf(inColor1[3], inColor2[3]); + if (alpha < maxInputAlpha) { + /*clamp*/ + if(alpha<0.0f) alpha=0.0f; + if(alpha>1.0f) alpha=1.0f; outColor[3]=alpha; } else { /* leave as before */ - outColor[3]=inColor1[3]; + outColor[3]=maxInputAlpha; } } - else { - /*foreground object*/ - outColor[3]= inColor1[3]; - } } static void node_composit_exec_diff_matte(void *data, bNode *node, bNodeStack **in, bNodeStack **out) |