1 files changed, 83 insertions, 0 deletions
diff --git a/source/blender/nodes/intern/SHD_nodes/SHD_invert.c b/source/blender/nodes/intern/SHD_nodes/SHD_invert.c
new file mode 100644
index 00000000000..4d1ce282fce
--- /dev/null
+++ b/source/blender/nodes/intern/SHD_nodes/SHD_invert.c
@@ -0,0 +1,83 @@
+/**
+ * $Id: SHD_math.c,v 1.4 2007/04/04 13:58:12 jesterking Exp $
+ *
+ * ***** 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) 2005 Blender Foundation.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#include "../SHD_util.h"
+
+
+
+/* **************** INVERT ******************** */ 
+static bNodeSocketType sh_node_invert_in[]= { 
+	{ SOCK_VALUE, 1, "Fac", 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f}, 
+	{ SOCK_RGBA, 1, "Color", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f}, 
+	{ -1, 0, "" } 
+};
+
+static bNodeSocketType sh_node_invert_out[]= { 
+	{ SOCK_RGBA, 0, "Color", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f}, 
+	{ -1, 0, "" } 
+};
+
+static void node_shader_exec_invert(void *data, bNode *node, bNodeStack **in, 
+bNodeStack **out) 
+{
+	float col[3], facm;
+
+	col[0] = 1.0f - in[1]->vec[0];
+	col[1] = 1.0f - in[1]->vec[1];
+	col[2] = 1.0f - in[1]->vec[2];
+	
+	/* if fac, blend result against original input */
+	if (in[0]->vec[0] < 1.0f) {
+		facm = 1.0 - in[0]->vec[0];
+
+		col[0] = in[0]->vec[0]*col[0] + (facm*in[1]->vec[0]);
+		col[1] = in[0]->vec[0]*col[1] + (facm*in[1]->vec[1]);
+		col[2] = in[0]->vec[0]*col[2] + (facm*in[1]->vec[2]);
+	}
+	
+	VECCOPY(out[0]->vec, col);
+}
+
+bNodeType sh_node_invert= {
+	/* *next,*prev */	NULL, NULL,
+	/* type code   */	SH_NODE_INVERT, 
+	/* name        */	"Invert", 
+	/* width+range */	90, 80, 100, 
+	/* class+opts  */	NODE_CLASS_OP_COLOR, NODE_OPTIONS, 
+	/* input sock  */	sh_node_invert_in, 
+	/* output sock */	sh_node_invert_out, 
+	/* storage     */	"", 
+	/* execfunc    */	node_shader_exec_invert,
+	/* butfunc     */	NULL,
+	/* initfunc    */	NULL,
+	/* freestoragefunc    */	NULL,
+	/* copystoragefunc    */	NULL,
+	/* id          */	NULL
+};
+