Undo revision 23130 which was a merge with 2.5, a messy one because I did something...
[blender.git] / source / blender / nodes / intern / CMP_nodes / CMP_diffMatte.c
index 68a1bcd..ade2111 100644 (file)
@@ -22,7 +22,7 @@
  *
  * The Original Code is: all of this file.
  *
- * Contributor(s): Bob Holcomb
+ * Contributor(s): none yet.
  *
  * ***** END GPL LICENSE BLOCK *****
  */
@@ -31,8 +31,8 @@
 
 /* ******************* channel Difference Matte ********************************* */
 static bNodeSocketType cmp_node_diff_matte_in[]={
-       {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},
+       {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,""}
 };
 
@@ -44,85 +44,157 @@ static bNodeSocketType cmp_node_diff_matte_out[]={
 
 /* 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 *imbuf1, float *imbuf2)
+static void do_diff_matte(bNode *node, float *colorbuf, float *inbuf, float *keyvals)
 {
        NodeChroma *c= (NodeChroma *)node->storage;
-       float tolerence=c->t1;
-   float falloff=c->t2;
-       float difference;
-   float alpha;
+       float *keymin= keyvals;
+       float *keymax= keyvals+3;
+       float *key=    keyvals+6;
+       float tolerance= keyvals[9];
+       float distance, alpha;
        
-   difference=fabs(imbuf2[0]-imbuf1[0])+
-               fabs(imbuf2[1]-imbuf1[1])+
-               fabs(imbuf2[2]-imbuf1[2]);
-
-   /*average together the distances*/
-   difference=difference/3.0;
-
-   VECCOPY(colorbuf, imbuf1);
-
-   /*make 100% transparent*/
-       if(difference < tolerence){
-      colorbuf[3]=0.0;
+       /*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;
        }
-   /*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 < imbuf1[3]) {      
-         colorbuf[3]=alpha;
-      }
-      else { /* leave as before */
-         colorbuf[3]=imbuf1[3];
-      }
-   }
        else {
                /*foreground object*/
-               colorbuf[3]= imbuf1[3];
+               colorbuf[3]= inbuf[3];
        }
 }
 
 static void node_composit_exec_diff_matte(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-       CompBuf *outbuf;
-       CompBuf *imbuf1;
-   CompBuf *imbuf2;
+       /*
+       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;
+       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;
-   if(in[1]->data==NULL) return;
        
-       imbuf1=typecheck_compbuf(in[0]->data, CB_RGBA);
-   imbuf2=typecheck_compbuf(in[1]->data, CB_RGBA);
+       inbuf=typecheck_compbuf(in[0]->data, CB_RGBA);
        
        c=node->storage;
-       outbuf=dupalloc_compbuf(imbuf1);
+       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;
+       }
+       
+       /*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]));
        
        /* note, processor gets a keyvals array passed on as buffer constant */
-       composit2_pixel_processor(node, outbuf, imbuf1, in[0]->vec, imbuf2, in[1]->vec, do_diff_matte, CB_RGBA, CB_RGBA);
+       composit2_pixel_processor(node, workbuf, workbuf, in[0]->vec, NULL, keyvals, do_diff_matte, CB_RGBA, CB_VAL);
        
-       out[0]->data=outbuf;
+       /*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;
        if(out[1]->hasoutput)
-               out[1]->data=valbuf_from_rgbabuf(outbuf, CHAN_A);
-       generate_preview(node, outbuf);
-
-       if(imbuf1!=in[0]->data)
-               free_compbuf(imbuf1);
+               out[1]->data=valbuf_from_rgbabuf(workbuf, CHAN_A);
+       generate_preview(node, workbuf);
 
-       if(imbuf2!=in[1]->data)
-               free_compbuf(imbuf2);
+       if(inbuf!=in[0]->data)
+               free_compbuf(inbuf);
 }
 
 static void node_composit_init_diff_matte(bNode *node)
 {
    NodeChroma *c= MEM_callocN(sizeof(NodeChroma), "node chroma");
    node->storage= c;
-   c->t1= 0.1f;
-   c->t2= 0.1f;
+   c->t1= 0.01f;
+   c->t2= 0.01f;
+   c->t3= 0.01f;
+   c->fsize= 0.0f;
+   c->fstrength= 0.0f;
+   node->custom1= 1; /* RGB */
 }
 
 bNodeType cmp_node_diff_matte={