diff options
Diffstat (limited to 'source/blender/nodes/intern/CMP_nodes/CMP_distanceMatte.c')
| -rw-r--r-- | source/blender/nodes/intern/CMP_nodes/CMP_distanceMatte.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/source/blender/nodes/intern/CMP_nodes/CMP_distanceMatte.c b/source/blender/nodes/intern/CMP_nodes/CMP_distanceMatte.c new file mode 100644 index 00000000000..f24aedd6661 --- /dev/null +++ b/source/blender/nodes/intern/CMP_nodes/CMP_distanceMatte.c @@ -0,0 +1,145 @@ +/** + * $Id$ + * + * ***** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 ***** + */ + +#include "../CMP_util.h" + +/* ******************* channel Distance Matte ********************************* */ +static bNodeSocketType cmp_node_distance_matte_in[]={ + {SOCK_RGBA,1,"Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f}, + {SOCK_RGBA,1,"Key Color", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f}, + {-1,0,""} +}; + +static bNodeSocketType cmp_node_distance_matte_out[]={ + {SOCK_RGBA,0,"Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f}, + {SOCK_VALUE,0,"Matte",0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f}, + {-1,0,""} +}; + +/* note, keyvals is passed on from caller as stack array */ +/* might have been nicer as temp struct though... */ +static void do_distance_matte(bNode *node, float *out, float *in) +{ + NodeChroma *c= (NodeChroma *)node->storage; + float tolerence=c->t1; + float falloff=c->t2; + float distance; + float alpha; + + distance=sqrt((c->key[0]-in[0])*(c->key[0]-in[0]) + + (c->key[1]-in[1])*(c->key[1]-in[1]) + + (c->key[2]-in[2])*(c->key[2]-in[2])); + + VECCOPY(out, in); + + /*make 100% transparent */ + if(distance < tolerence) { + out[3]=0.0; + } + /*in the falloff region, make partially transparent */ + else if(distance < falloff+tolerence){ + distance=distance-tolerence; + alpha=distance/falloff; + /*only change if more transparent than before */ + if(alpha < in[3]) { + out[3]=alpha; + } + else { /* leave as before */ + out[3]=in[3]; + } + } + else { + out[3]=in[3]; + } +} + +static void node_composit_exec_distance_matte(void *data, bNode *node, bNodeStack **in, bNodeStack **out) +{ + /* + Losely based on the Sequencer chroma key plug-in, but enhanced to work in other color spaces and + uses a differnt difference function (suggested in forums of vfxtalk.com). + */ + CompBuf *workbuf; + CompBuf *inbuf; + NodeChroma *c; + + /*is anything connected?*/ + if(out[0]->hasoutput==0 && out[1]->hasoutput==0) return; + /*must have an image imput*/ + if(in[0]->data==NULL) return; + + inbuf=typecheck_compbuf(in[0]->data, CB_RGBA); + + c=node->storage; + workbuf=dupalloc_compbuf(inbuf); + + /*use the input color*/ + c->key[0]= in[1]->vec[0]; + c->key[1]= in[1]->vec[1]; + c->key[2]= in[1]->vec[2]; + + /* note, processor gets a keyvals array passed on as buffer constant */ + composit1_pixel_processor(node, workbuf, workbuf, in[0]->vec, do_distance_matte, CB_RGBA); + + + out[0]->data=workbuf; + if(out[1]->hasoutput) + out[1]->data=valbuf_from_rgbabuf(workbuf, CHAN_A); + generate_preview(node, workbuf); + + if(inbuf!=in[0]->data) + free_compbuf(inbuf); +} + +static void node_composit_init_distance_matte(bNode *node) +{ + NodeChroma *c= MEM_callocN(sizeof(NodeChroma), "node chroma"); + node->storage= c; + c->t1= 0.1f; + c->t2= 0.1f; +} + +bNodeType cmp_node_distance_matte={ + /* *next,*prev */ NULL, NULL, + /* type code */ CMP_NODE_DIST_MATTE, + /* name */ "Distance Key", + /* width+range */ 200, 80, 250, + /* class+opts */ NODE_CLASS_MATTE, NODE_PREVIEW|NODE_OPTIONS, + /* input sock */ cmp_node_distance_matte_in, + /* output sock */ cmp_node_distance_matte_out, + /* storage */ "NodeChroma", + /* execfunc */ node_composit_exec_distance_matte, + /* butfunc */ NULL, + /* initfunc */ node_composit_init_distance_matte, + /* freestoragefunc */ node_free_standard_storage, + /* copystoragefunc */ node_copy_standard_storage, + /* id */ NULL +}; + + |