Initial commit. Not in build system so shouldn't interfere with anything at this point. Will commit modified versions of existing files once build system is tested.

1 files changed, 154 insertions, 0 deletions

diff --git a/source/blender/nodes/intern/CMP_nodes/CMP_mapUV.c b/source/blender/nodes/intern/CMP_nodes/CMP_mapUV.c
new file mode 100644
index 00000000000..a0b35ab5260
--- /dev/null
+++ b/source/blender/nodes/intern/CMP_nodes/CMP_mapUV.c
@@ -0,0 +1,154 @@
+/**
+ * $Id$
+ *
+ * ***** 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): none yet.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#include "../CMP_util.h"
+
+/* **************** Map UV  ******************** */
+
+static bNodeSocketType cmp_node_mapuv_in[]= {
+	{	SOCK_RGBA, 1, "Image",			0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
+	{	SOCK_VECTOR, 1, "UV",			1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
+	{	-1, 0, ""	}
+};
+static bNodeSocketType cmp_node_mapuv_out[]= {
+	{	SOCK_RGBA, 0, "Image",			0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
+	{	-1, 0, ""	}
+};
+
+/* foreach UV, use these values to read in cbuf and write to stackbuf */
+/* stackbuf should be zeroed */
+static void do_mapuv(CompBuf *stackbuf, CompBuf *cbuf, CompBuf *uvbuf, float threshold)
+{
+	ImBuf *ibuf;
+	float *out= stackbuf->rect, *uv, *uvnext, *uvprev;
+	float dx, dy, alpha;
+	int x, y, sx, sy, row= 3*stackbuf->x;
+	
+	/* ibuf needed for sampling */
+	ibuf= IMB_allocImBuf(cbuf->x, cbuf->y, 32, 0, 0);
+	ibuf->rect_float= cbuf->rect;
+	
+	/* vars for efficient looping */
+	uv= uvbuf->rect;
+	uvnext= uv+row;
+	uvprev= uv-row;
+	sx= stackbuf->x;
+	sy= stackbuf->y;
+	
+	for(y=0; y<sy; y++) {
+		for(x=0; x<sx; x++, out+=4, uv+=3, uvnext+=3, uvprev+=3) {
+			if(x>0 && x<sx-1 && y>0 && y<sy-1) {
+				if(uv[2]!=0.0f) {
+					
+					/* adaptive sampling, red (U) channel */
+					dx= 0.5f*(fabs(uv[0]-uv[-3]) + fabs(uv[0]-uv[3]));
+					
+					dx+= 0.25f*(fabs(uv[0]-uvprev[-3]) + fabs(uv[0]-uvnext[-3]));
+					dx+= 0.25f*(fabs(uv[0]-uvprev[+3]) + fabs(uv[0]-uvnext[+3]));
+					
+					/* adaptive sampling, green (V) channel */
+					dy= 0.5f*(fabs(uv[1]-uv[-row+1]) + fabs(uv[1]-uv[row+1]));
+							 
+					dy+= 0.25f*(fabs(uv[1]-uvprev[+1-3]) + fabs(uv[1]-uvnext[+1-3]));
+					dy+= 0.25f*(fabs(uv[1]-uvprev[+1+3]) + fabs(uv[1]-uvnext[+1+3]));
+					
+					/* UV to alpha threshold */
+					alpha= 1.0f - threshold*(dx+dy);
+					if(alpha<0.0f) alpha= 0.0f;
+					else alpha*= uv[2];
+					
+					/* should use mipmap */
+					if(dx > 0.20f) dx= 0.20f;
+					if(dy > 0.20f) dy= 0.20f;
+					
+					ibuf_sample(ibuf, uv[0], uv[1], dx, dy, out);
+					/* premul */
+					if(alpha<1.0f) {
+						out[0]*= alpha;
+						out[1]*= alpha;
+						out[2]*= alpha;
+						out[3]*= alpha;
+					}
+				}
+			}
+		}
+	}
+
+	IMB_freeImBuf(ibuf);	
+}
+
+
+static void node_composit_exec_mapuv(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
+{
+	if(out[0]->hasoutput==0)
+		return;
+	
+	if(in[0]->data && in[1]->data) {
+		CompBuf *cbuf= in[0]->data;
+		CompBuf *uvbuf= in[1]->data;
+		CompBuf *stackbuf;
+		
+		cbuf= typecheck_compbuf(cbuf, CB_RGBA);
+		uvbuf= typecheck_compbuf(uvbuf, CB_VEC3);
+		stackbuf= alloc_compbuf(uvbuf->x, uvbuf->y, CB_RGBA, 1); /* allocs */;
+		
+		do_mapuv(stackbuf, cbuf, uvbuf, 0.05f*(float)node->custom1);
+		
+		out[0]->data= stackbuf;
+		
+		if(cbuf!=in[0]->data)
+			free_compbuf(cbuf);
+		if(uvbuf!=in[1]->data)
+			free_compbuf(uvbuf);
+	}
+}
+
+static int node_composit_buts_map_uv(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
+{
+   if(block) {
+      uiDefButS(block, NUM, B_NODE_EXEC+node->nr, "Alpha:",
+         butr->xmin, butr->ymin, butr->xmax-butr->xmin, 20, 
+         &node->custom1, 0, 100, 0, 0, "Conversion percentage of UV differences to Alpha");
+   }
+   return 20;
+}
+
+bNodeType cmp_node_mapuv= {
+	/* type code   */	CMP_NODE_MAP_UV,
+	/* name        */	"Map UV",
+	/* width+range */	140, 100, 320,
+	/* class+opts  */	NODE_CLASS_DISTORT, NODE_OPTIONS,
+	/* input sock  */	cmp_node_mapuv_in,
+	/* output sock */	cmp_node_mapuv_out,
+	/* storage     */	"",
+	/* execfunc    */	node_composit_exec_mapuv,
+   /* butfunc     */ node_composit_buts_map_uv
+};
+
+