1 files changed, 51 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_DotproductOperation.cpp b/source/blender/compositor/operations/COM_DotproductOperation.cpp
new file mode 100644
index 00000000000..284fb0ddca4
--- /dev/null
+++ b/source/blender/compositor/operations/COM_DotproductOperation.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2011, Blender Foundation.
+ *
+ * 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.
+ *
+ * Contributor: 
+ *		Jeroen Bakker 
+ *		Monique Dewanchand
+ */
+
+#include "COM_DotproductOperation.h"
+
+DotproductOperation::DotproductOperation() : NodeOperation() {
+	this->addInputSocket(COM_DT_VECTOR);
+	this->addInputSocket(COM_DT_VECTOR);
+	this->addOutputSocket(COM_DT_VALUE);
+	this->setResolutionInputSocketIndex(0);
+	this->input1Operation = NULL;
+	this->input2Operation = NULL;
+}
+void DotproductOperation::initExecution() {
+	this->input1Operation = this->getInputSocketReader(0);
+	this->input2Operation = this->getInputSocketReader(1);
+}
+
+void DotproductOperation::deinitExecution() {
+	this->input1Operation = NULL;
+	this->input2Operation = NULL;
+}
+
+/** @todo: current implementation is the inverse of a dotproduct. not 'logically' correct
+  */
+void DotproductOperation::executePixel(float *color,float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
+	float input1[4];
+	float input2[4];
+	this->input1Operation->read(input1, x, y, sampler, inputBuffers);
+	this->input2Operation->read(input2, x, y, sampler, inputBuffers);
+	color[0] = -(input1[0]*input2[0]+input1[1]*input2[1]+input1[2]*input2[2]);
+}