converted more mixed tab/space indentations to tabs. only whitespace changes.
[blender.git] / source / blender / nodes / intern / CMP_nodes / CMP_diffMatte.c
index ade2111..2960532 100644 (file)
@@ -1,4 +1,4 @@
-/**
+/*
  * $Id$
  *
  * ***** BEGIN GPL LICENSE BLOCK *****
  *
  * 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.
+ * 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): none yet.
+ * Contributor(s): Bob Holcomb
  *
  * ***** END GPL LICENSE BLOCK *****
  */
 
+/** \file blender/nodes/intern/CMP_nodes/CMP_diffMatte.c
+ *  \ingroup cmpnodes
+ */
+
+
 #include "../CMP_util.h"
 
 /* ******************* channel Difference Matte ********************************* */
 static bNodeSocketType cmp_node_diff_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},
+       {SOCK_RGBA,1,"Image 1", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
+       {SOCK_RGBA,1,"Image 2", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
        {-1,0,""}
 };
 
@@ -42,176 +47,105 @@ static bNodeSocketType cmp_node_diff_matte_out[]={
        {-1,0,""}
 };
 
-/* note, keyvals is passed on from caller as stack array */
-/* might have been nicer as temp struct though... */
-static void do_diff_matte(bNode *node, float *colorbuf, float *inbuf, float *keyvals)
+static void do_diff_matte(bNode *node, float *outColor, float *inColor1, float *inColor2)
 {
        NodeChroma *c= (NodeChroma *)node->storage;
-       float *keymin= keyvals;
-       float *keymax= keyvals+3;
-       float *key=    keyvals+6;
-       float tolerance= keyvals[9];
-       float distance, alpha;
-       
-       /*process the pixel if it is close to the key or already transparent*/
-       if(((colorbuf[0]>keymin[0] && colorbuf[0]<keymax[0]) &&
-               (colorbuf[1]>keymin[1] && colorbuf[1]<keymax[1]) &&
-               (colorbuf[2]>keymin[2] && colorbuf[2]<keymax[2])) || inbuf[3]<1.0f) {
-               
-               /*true distance from key*/
-               distance= sqrt((colorbuf[0]-key[0])*(colorbuf[0]-key[0])+
-                                         (colorbuf[1]-key[1])*(colorbuf[1]-key[1])+
-                                         (colorbuf[2]-key[2])*(colorbuf[2]-key[2]));
-               
-               /*is it less transparent than the prevous pixel*/
-               alpha= distance/tolerance;
-               if(alpha > inbuf[3]) alpha= inbuf[3];
-               if(alpha > c->fstrength) alpha= 0.0f;
-               
-               /*clamp*/
-               if (alpha>1.0f) alpha=1.0f;
-               if (alpha<0.0f) alpha=0.0f;
-               
-               /*premultiplied picture*/
-               colorbuf[3]= alpha;
+       float tolerence=c->t1;
+       float falloff=c->t2;
+       float difference;
+       float alpha;
+
+       difference= fabs(inColor2[0]-inColor1[0])+
+                          fabs(inColor2[1]-inColor1[1])+
+                          fabs(inColor2[2]-inColor1[2]);
+
+       /*average together the distances*/
+       difference=difference/3.0;
+
+       VECCOPY(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]) {
+                       outColor[3]=alpha;
+               }
+               else { /* leave as before */
+                       outColor[3]=inColor1[3];
+               }
        }
        else {
                /*foreground object*/
-               colorbuf[3]= inbuf[3];
+               outColor[3]= inColor1[3];
        }
 }
 
 static void node_composit_exec_diff_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;
+       CompBuf *outbuf=0;
+       CompBuf *imbuf1=0;
+       CompBuf *imbuf2=0;
        NodeChroma *c;
-       float keyvals[10];
-       float *keymin= keyvals;
-       float *keymax= keyvals+3;
-       float *key=    keyvals+6;
-       float *tolerance= keyvals+9;
-       float t[3];
-       
+
        /*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*/
-       key[0]= in[1]->vec[0];
-       key[1]= in[1]->vec[1];
-       key[2]= in[1]->vec[2];
-       
-       /*get the tolerances from the UI*/
-       t[0]=c->t1;
-       t[1]=c->t2;
-       t[2]=c->t3;
-       
-       /*convert to colorspace*/
-       switch(node->custom1) {
-               case 1: /*RGB*/
-                               break;
-               case 2: /*HSV*/
-               /*convert the key (in place)*/
-                       rgb_to_hsv(key[0], key[1], key[2], &key[0], &key[1], &key[2]);
-                       composit1_pixel_processor(node, workbuf, inbuf, in[1]->vec, do_rgba_to_hsva, CB_RGBA);
-                       break;
-               case 3: /*YUV*/
-                       rgb_to_yuv(key[0], key[1], key[2], &key[0], &key[1], &key[2]);
-                       composit1_pixel_processor(node, workbuf, inbuf, in[1]->vec, do_rgba_to_yuva, CB_RGBA);
-                       break;
-               case 4: /*YCC*/
-                       rgb_to_ycc(key[0], key[1], key[2], &key[0], &key[1], &key[2]);
-                       composit1_pixel_processor(node, workbuf, inbuf, in[1]->vec, do_rgba_to_ycca, CB_RGBA);
-                       /*account for ycc is on a 0..255 scale*/
-                       t[0]= c->t1*255.0;
-                       t[1]= c->t2*255.0;
-                       t[2]= c->t3*255.0;
-                       break;
-               default:
-                               break;
+
+
+       imbuf1=typecheck_compbuf(in[0]->data, CB_RGBA);
+
+       /* if there's an image, use that, if not use the color */
+       if(in[1]->data) {
+               imbuf2=typecheck_compbuf(in[1]->data, CB_RGBA);
        }
-       
-       /*find min/max tolerances*/
-       keymin[0]= key[0]-t[0];
-       keymin[1]= key[1]-t[1];
-       keymin[2]= key[2]-t[2];
-       keymax[0]= key[0]+t[0];
-       keymax[1]= key[1]+t[1];
-       keymax[2]= key[2]+t[2];
-       
-       /*tolerance*/
-       *tolerance= sqrt((t[0])*(t[0])+
-                                       (t[1])*(t[1])+
-                                       (t[2])*(t[2]));
-       
+
+       c=node->storage;
+       outbuf=dupalloc_compbuf(imbuf1);
+
        /* note, processor gets a keyvals array passed on as buffer constant */
-       composit2_pixel_processor(node, workbuf, workbuf, in[0]->vec, NULL, keyvals, do_diff_matte, CB_RGBA, CB_VAL);
-       
-       /*convert back to RGB colorspace*/
-       switch(node->custom1) {
-               case 1: /*RGB*/
-                       composit1_pixel_processor(node, workbuf, workbuf, in[1]->vec, do_copy_rgba, CB_RGBA);
-                       break;
-               case 2: /*HSV*/
-                       composit1_pixel_processor(node, workbuf, workbuf, in[1]->vec, do_hsva_to_rgba, CB_RGBA);
-                       break;
-               case 3: /*YUV*/
-                       composit1_pixel_processor(node, workbuf, workbuf, in[1]->vec, do_yuva_to_rgba, CB_RGBA);
-                       break;
-               case 4: /*YCC*/
-                       composit1_pixel_processor(node, workbuf, workbuf, in[1]->vec, do_ycca_to_rgba, CB_RGBA);
-                       break;
-               default:
-                       break;
-       }
-       
-       out[0]->data=workbuf;
+       composit2_pixel_processor(node, outbuf, imbuf1, in[0]->vec, imbuf2, in[1]->vec, do_diff_matte, CB_RGBA, CB_RGBA);
+
+       out[0]->data=outbuf;
        if(out[1]->hasoutput)
-               out[1]->data=valbuf_from_rgbabuf(workbuf, CHAN_A);
-       generate_preview(node, workbuf);
+               out[1]->data=valbuf_from_rgbabuf(outbuf, CHAN_A);
+       generate_preview(data, node, outbuf);
+
+       if(imbuf1!=in[0]->data)
+               free_compbuf(imbuf1);
 
-       if(inbuf!=in[0]->data)
-               free_compbuf(inbuf);
+       if(imbuf2!=in[1]->data)
+               free_compbuf(imbuf2);
 }
 
 static void node_composit_init_diff_matte(bNode *node)
 {
-   NodeChroma *c= MEM_callocN(sizeof(NodeChroma), "node chroma");
-   node->storage= c;
-   c->t1= 0.01f;
-   c->t2= 0.01f;
-   c->t3= 0.01f;
-   c->fsize= 0.0f;
-   c->fstrength= 0.0f;
-   node->custom1= 1; /* RGB */
+       NodeChroma *c= MEM_callocN(sizeof(NodeChroma), "node chroma");
+       node->storage= c;
+       c->t1= 0.1f;
+       c->t2= 0.1f;
+}
+
+void register_node_type_cmp_diff_matte(ListBase *lb)
+{
+       static bNodeType ntype;
+
+       node_type_base(&ntype, CMP_NODE_DIFF_MATTE, "Difference Key", NODE_CLASS_MATTE, NODE_PREVIEW|NODE_OPTIONS,
+               cmp_node_diff_matte_in, cmp_node_diff_matte_out);
+       node_type_size(&ntype, 200, 80, 250);
+       node_type_init(&ntype, node_composit_init_diff_matte);
+       node_type_storage(&ntype, "NodeChroma", node_free_standard_storage, node_copy_standard_storage);
+       node_type_exec(&ntype, node_composit_exec_diff_matte);
+
+       nodeRegisterType(lb, &ntype);
 }
 
-bNodeType cmp_node_diff_matte={
-       /* *next,*prev */       NULL, NULL,
-       /* type code   */       CMP_NODE_DIFF_MATTE,
-       /* name        */       "Difference Key",
-       /* width+range */       200, 80, 250,
-       /* class+opts  */       NODE_CLASS_MATTE, NODE_PREVIEW|NODE_OPTIONS,
-       /* input sock  */       cmp_node_diff_matte_in,
-       /* output sock */       cmp_node_diff_matte_out,
-       /* storage     */       "NodeChroma",
-       /* execfunc    */       node_composit_exec_diff_matte,
-       /* butfunc     */       NULL,
-       /* initfunc    */       node_composit_init_diff_matte,
-       /* freestoragefunc    */        node_free_standard_storage,
-       /* copystoragefunc    */        node_copy_standard_storage,
-       /* id          */       NULL
-};