152 lines
4.1 KiB
C
152 lines
4.1 KiB
C
/*
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* $Id$
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*
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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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* The Original Code is Copyright (C) 2006 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): Bob Holcomb
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/nodes/intern/CMP_nodes/CMP_diffMatte.c
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* \ingroup cmpnodes
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*/
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#include "../CMP_util.h"
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/* ******************* channel Difference Matte ********************************* */
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static bNodeSocketType cmp_node_diff_matte_in[]={
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{SOCK_RGBA,1,"Image 1", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
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{SOCK_RGBA,1,"Image 2", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
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{-1,0,""}
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};
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static bNodeSocketType cmp_node_diff_matte_out[]={
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{SOCK_RGBA,0,"Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
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{SOCK_VALUE,0,"Matte",0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
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{-1,0,""}
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};
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static void do_diff_matte(bNode *node, float *outColor, float *inColor1, float *inColor2)
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{
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NodeChroma *c= (NodeChroma *)node->storage;
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float tolerence=c->t1;
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float falloff=c->t2;
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float difference;
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float alpha;
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difference=fabs(inColor2[0]-inColor1[0])+
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fabs(inColor2[1]-inColor1[1])+
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fabs(inColor2[2]-inColor1[2]);
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/*average together the distances*/
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difference=difference/3.0;
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VECCOPY(outColor, inColor1);
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/*make 100% transparent*/
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if(difference < tolerence){
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outColor[3]=0.0;
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}
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/*in the falloff region, make partially transparent */
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else if(difference < falloff+tolerence){
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difference=difference-tolerence;
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alpha=difference/falloff;
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/*only change if more transparent than before */
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if(alpha < inColor1[3]) {
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outColor[3]=alpha;
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}
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else { /* leave as before */
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outColor[3]=inColor1[3];
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}
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}
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else {
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/*foreground object*/
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outColor[3]= inColor1[3];
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}
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}
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static void node_composit_exec_diff_matte(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
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{
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CompBuf *outbuf=0;
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CompBuf *imbuf1=0;
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CompBuf *imbuf2=0;
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NodeChroma *c;
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/*is anything connected?*/
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if(out[0]->hasoutput==0 && out[1]->hasoutput==0) return;
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/*must have an image imput*/
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if(in[0]->data==NULL) return;
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imbuf1=typecheck_compbuf(in[0]->data, CB_RGBA);
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/* if there's an image, use that, if not use the color */
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if(in[1]->data) {
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imbuf2=typecheck_compbuf(in[1]->data, CB_RGBA);
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}
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c=node->storage;
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outbuf=dupalloc_compbuf(imbuf1);
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/* note, processor gets a keyvals array passed on as buffer constant */
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composit2_pixel_processor(node, outbuf, imbuf1, in[0]->vec, imbuf2, in[1]->vec, do_diff_matte, CB_RGBA, CB_RGBA);
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out[0]->data=outbuf;
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if(out[1]->hasoutput)
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out[1]->data=valbuf_from_rgbabuf(outbuf, CHAN_A);
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generate_preview(data, node, outbuf);
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if(imbuf1!=in[0]->data)
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free_compbuf(imbuf1);
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if(imbuf2!=in[1]->data)
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free_compbuf(imbuf2);
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}
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static void node_composit_init_diff_matte(bNode *node)
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{
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NodeChroma *c= MEM_callocN(sizeof(NodeChroma), "node chroma");
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node->storage= c;
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c->t1= 0.1f;
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c->t2= 0.1f;
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}
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void register_node_type_cmp_diff_matte(ListBase *lb)
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{
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static bNodeType ntype;
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node_type_base(&ntype, CMP_NODE_DIFF_MATTE, "Difference Key", NODE_CLASS_MATTE, NODE_PREVIEW|NODE_OPTIONS,
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cmp_node_diff_matte_in, cmp_node_diff_matte_out);
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node_type_size(&ntype, 200, 80, 250);
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node_type_init(&ntype, node_composit_init_diff_matte);
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node_type_storage(&ntype, "NodeChroma", node_free_standard_storage, node_copy_standard_storage);
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node_type_exec(&ntype, node_composit_exec_diff_matte);
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nodeRegisterType(lb, &ntype);
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}
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