1 files changed, 109 insertions, 0 deletions
diff --git a/source/blender/nodes/texture/nodes/node_texture_rotate.c b/source/blender/nodes/texture/nodes/node_texture_rotate.c
new file mode 100644
index 00000000000..a788b9cbbde
--- /dev/null
+++ b/source/blender/nodes/texture/nodes/node_texture_rotate.c
@@ -0,0 +1,109 @@
+/*
+ *
+ * ***** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2005 Blender Foundation.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): Robin Allen
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/nodes/texture/nodes/node_texture_rotate.c
+ *  \ingroup texnodes
+ */
+
+
+#include <math.h>
+
+#include "node_texture_util.h"
+#include "NOD_texture.h"
+
+static bNodeSocketTemplate inputs[]= { 
+	{ SOCK_RGBA, 1, "Color", 0.0f, 0.0f, 0.0f, 1.0f},
+	{ SOCK_FLOAT, 1, "Turns",   0.0f, 0.0f, 0.0f, 0.0f,  -1.0f, 1.0f, PROP_NONE },
+	{ SOCK_VECTOR, 1, "Axis",   0.0f, 0.0f, 1.0f, 0.0f,  -1.0f, 1.0f, PROP_DIRECTION },
+	{ -1, 0, "" } 
+};
+
+static bNodeSocketTemplate outputs[]= { 
+	{ SOCK_RGBA, 0, "Color"}, 
+	{ -1, 0, "" } 
+};
+
+static void rotate(float new_co[3], float a, float ax[3], float co[3])
+{
+	float para[3];
+	float perp[3];
+	float cp[3];
+	
+	float cos_a = cos(a * (float)(2*M_PI));
+	float sin_a = sin(a * (float)(2*M_PI));
+	
+	// x' = xcosa + n(n.x)(1-cosa) + (x*n)sina
+	
+	mul_v3_v3fl(perp, co, cos_a);
+	mul_v3_v3fl(para, ax, dot_v3v3(co, ax)*(1 - cos_a));
+	
+	cross_v3_v3v3(cp, ax, co);
+	mul_v3_fl(cp, sin_a);
+	
+	new_co[0] = para[0] + perp[0] + cp[0];
+	new_co[1] = para[1] + perp[1] + cp[1];
+	new_co[2] = para[2] + perp[2] + cp[2];
+}
+
+static void colorfn(float *out, TexParams *p, bNode *UNUSED(node), bNodeStack **in, short thread)
+{
+	float new_co[3], new_dxt[3], new_dyt[3], a, ax[3];
+	
+	a= tex_input_value(in[1], p, thread);
+	tex_input_vec(ax, in[2], p, thread);
+
+	rotate(new_co, a, ax, p->co);
+	if (p->osatex) {
+		rotate(new_dxt, a, ax, p->dxt);
+		rotate(new_dyt, a, ax, p->dyt);
+	}
+	
+	{
+		TexParams np = *p;
+		np.co = new_co;
+		np.dxt = new_dxt;
+		np.dyt = new_dyt;
+		tex_input_rgba(out, in[0], &np, thread);
+	}
+}
+static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out) 
+{
+	tex_output(node, in, out[0], &colorfn, data);
+}
+
+void register_node_type_tex_rotate(ListBase *lb)
+{
+	static bNodeType ntype;
+	
+	node_type_base(&ntype, TEX_NODE_ROTATE, "Rotate", NODE_CLASS_DISTORT, NODE_OPTIONS);
+	node_type_socket_templates(&ntype, inputs, outputs);
+	node_type_size(&ntype, 140, 100, 320);
+	node_type_exec(&ntype, exec);
+	
+	nodeRegisterType(lb, &ntype);
+}