1 files changed, 85 insertions, 0 deletions
diff --git a/source/blender/nodes/intern/TEX_nodes/TEX_checker.c b/source/blender/nodes/intern/TEX_nodes/TEX_checker.c
new file mode 100644
index 00000000000..60357782e25
--- /dev/null
+++ b/source/blender/nodes/intern/TEX_nodes/TEX_checker.c
@@ -0,0 +1,85 @@
+/**
+ *
+ * ***** 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 "../TEX_util.h"                                                   
+#include <math.h>
+
+static bNodeSocketType inputs[]= {
+	{ SOCK_RGBA, 1, "Color1", 1.0f, 0.0f, 0.0f, 1.0f,  0.0f, 1.0f },
+	{ SOCK_RGBA, 1, "Color2", 1.0f, 1.0f, 1.0f, 1.0f,  0.0f, 1.0f },
+	{ SOCK_VALUE, 1, "Size",   0.5f, 0.0f, 0.0f, 0.0f,  0.0f, 100.0f },
+	{ -1, 0, "" }
+};
+static bNodeSocketType outputs[]= {
+	{ SOCK_RGBA, 0, "Color", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f },
+	{ -1, 0, "" }
+};
+
+static void colorfn(float *out, float *coord, bNode *node, bNodeStack **in, short thread)
+{
+	float x  = coord[0];
+	float y  = coord[1];
+	float z  = coord[2];
+	float sz = tex_input_value(in[2], coord, thread);
+	
+	/* 0.00001  because of unit sized stuff */
+	int xi = (int)fabs(floor(0.00001 + x / sz));
+	int yi = (int)fabs(floor(0.00001 + y / sz));
+	int zi = (int)fabs(floor(0.00001 + z / sz));
+	
+	if( (xi % 2 == yi % 2) == (zi % 2) ) {
+		tex_input_rgba(out, in[0], coord, thread);
+	} else {
+		tex_input_rgba(out, in[1], coord, thread);
+	} 
+}
+
+static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
+{
+	tex_output(node, in, out[0], &colorfn);
+	
+	tex_do_preview(node, out[0], data);
+}
+
+bNodeType tex_node_checker= {
+	/* *next,*prev */	NULL, NULL,
+	/* type code   */	TEX_NODE_CHECKER,
+	/* name        */	"Checker",
+	/* width+range */	100, 60, 150,
+	/* class+opts  */	NODE_CLASS_PATTERN, NODE_OPTIONS | NODE_PREVIEW,
+	/* input sock  */	inputs,
+	/* output sock */	outputs,
+	/* storage     */	"", 
+	/* execfunc    */	exec,
+	/* butfunc     */	NULL,
+	/* initfunc    */	NULL,
+	/* freestoragefunc    */	NULL,
+	/* copystoragefunc    */	NULL,
+	/* id          */	NULL
+	
+};