1 files changed, 93 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_RotateOperation.cpp b/source/blender/compositor/operations/COM_RotateOperation.cpp
new file mode 100644
index 00000000000..ef6c5bee90a
--- /dev/null
+++ b/source/blender/compositor/operations/COM_RotateOperation.cpp
@@ -0,0 +1,93 @@
+/*
+ * 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_RotateOperation.h"
+#include "BLI_math.h"
+
+RotateOperation::RotateOperation() : NodeOperation() {
+	this->addInputSocket(COM_DT_COLOR);
+	this->addInputSocket(COM_DT_VALUE);
+	this->addOutputSocket(COM_DT_COLOR);
+	this->setResolutionInputSocketIndex(0);
+	this->imageSocket = NULL;
+	this->degreeSocket =  NULL;
+	this->doDegree2RadConversion = false;
+}
+void RotateOperation::initExecution() {
+	this->imageSocket = this->getInputSocketReader(0);
+	this->degreeSocket = this->getInputSocketReader(1);
+	this->centerX = this->getWidth()/2.0;
+	this->centerY = this->getHeight()/2.0;
+	float degree[4];
+	this->degreeSocket->read(degree, 0, 0, COM_PS_NEAREST, NULL);
+	double rad;
+	if (this->doDegree2RadConversion) {
+		rad = DEG2RAD(degree[0]);
+	} else {
+		rad = degree[0];
+	}
+	this->cosine = cos(rad);
+	this->sine = sin(rad);
+}
+
+void RotateOperation::deinitExecution() {
+	this->imageSocket = NULL;
+	this->degreeSocket = NULL;
+}
+
+
+void RotateOperation::executePixel(float *color,float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
+	const float dy = y - this->centerY;
+	const float dx = x - this->centerX;
+	const float nx = this->centerX+(this->cosine*dx + this->sine*dy);
+	const float ny = this->centerY+(-this->sine*dx + this->cosine*dy);
+	this->imageSocket->read(color, nx, ny, sampler, inputBuffers);
+}
+
+bool RotateOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output) {
+	rcti newInput;
+	
+	const float dxmin = input->xmin - this->centerX;
+	const float dymin = input->ymin - this->centerY;
+	const float dxmax = input->xmax - this->centerX;
+	const float dymax = input->ymax - this->centerY;
+	
+	const float x1 = this->centerX+(this->cosine*dxmin + this->sine*dymin);
+	const float x2 = this->centerX+(this->cosine*dxmax + this->sine*dymin);
+	const float x3 = this->centerX+(this->cosine*dxmin + this->sine*dymax);
+	const float x4 = this->centerX+(this->cosine*dxmax + this->sine*dymax);
+	const float y1 = this->centerY+(-this->sine*dxmin + this->cosine*dymin);
+	const float y2 = this->centerY+(-this->sine*dxmax + this->cosine*dymin);
+	const float y3 = this->centerY+(-this->sine*dxmin + this->cosine*dymax);
+	const float y4 = this->centerY+(-this->sine*dxmax + this->cosine*dymax);
+	const float minx = min(x1, min(x2, min(x3, x4)));
+	const float maxx = max(x1, max(x2, max(x3, x4)));
+	const float miny = min(y1, min(y2, min(y3, y4)));
+	const float maxy = max(y1, max(y2, max(y3, y4)));
+	
+	newInput.xmax = ceil(maxx)+1;
+	newInput.xmin = floor(minx)-1;
+	newInput.ymax = ceil(maxy)+1;
+	newInput.ymin = floor(miny)-1;
+	
+	return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
+}