From 23bf087338204b45e5b72c1269bd013a88cf3f9d Mon Sep 17 00:00:00 2001
From: Monique Dewanchand <m.dewanchand@atmind.nl>
Date: Wed, 6 Feb 2013 08:40:12 +0000
Subject: Code clean up translate node added constants. moved the code to a
 separate class. so it can be reused for other nodes

---
 .../compositor/operations/COM_WrapOperation.cpp    | 117 +++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 source/blender/compositor/operations/COM_WrapOperation.cpp

(limited to 'source/blender/compositor/operations/COM_WrapOperation.cpp')

diff --git a/source/blender/compositor/operations/COM_WrapOperation.cpp b/source/blender/compositor/operations/COM_WrapOperation.cpp
new file mode 100644
index 00000000000..37a93520c7c
--- /dev/null
+++ b/source/blender/compositor/operations/COM_WrapOperation.cpp
@@ -0,0 +1,117 @@
+/*
+ * 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
+ *		Thomas Beck (plasmasolutions.de)
+ */
+
+#include "COM_WrapOperation.h"
+
+WrapOperation::WrapOperation() : NodeOperation()
+{
+	this->addInputSocket(COM_DT_COLOR);
+	this->addOutputSocket(COM_DT_COLOR);
+	this->setResolutionInputSocketIndex(0);
+	this->m_inputOperation = NULL;
+}
+void WrapOperation::initExecution()
+{
+	this->m_inputOperation = this->getInputSocketReader(0);
+}
+
+void WrapOperation::deinitExecution()
+{
+	this->m_inputOperation = NULL;
+}
+
+inline float WrapOperation::getWrappedOriginalXPos(float x)
+{
+	while (x < 0) x += this->m_width;
+	return fmodf(x, this->getWidth());
+}
+
+inline float WrapOperation::getWrappedOriginalYPos(float y)
+{
+	while (y < 0) y += this->m_height;
+	return fmodf(y, this->getHeight());
+}
+
+void WrapOperation::executePixel(float output[4], float x, float y, PixelSampler sampler)
+{
+	float nx, ny;
+	nx = x;
+	ny = y;
+	switch (m_wrappingType) {
+		case CMP_NODE_WRAP_NONE:
+			//Intentionally empty, originalXPos and originalYPos have been set before
+			break;
+		case CMP_NODE_WRAP_X:
+			// wrap only on the x-axis
+			nx = this->getWrappedOriginalXPos(x);
+			break;
+		case CMP_NODE_WRAP_Y:
+			// wrap only on the y-axis
+			ny = this->getWrappedOriginalYPos(y);
+			break;
+		case CMP_NODE_WRAP_XY:
+			// wrap on both
+			nx = this->getWrappedOriginalXPos(x);
+			ny = this->getWrappedOriginalYPos(y);
+			break;
+	}
+
+	this->m_inputOperation->read(output, nx, ny, sampler);
+
+}
+
+bool WrapOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
+{
+	rcti newInput;
+
+	newInput.xmin = input->xmin;
+	newInput.xmax = input->xmax;
+	newInput.ymin = input->ymin;
+	newInput.ymax = input->ymax;
+
+	if (m_wrappingType == 1 || m_wrappingType == 3) {
+		// wrap only on the x-axis if tile is wrapping
+		newInput.xmin = getWrappedOriginalXPos(input->xmin);
+		newInput.xmax = getWrappedOriginalXPos(input->xmax);
+		if (newInput.xmin > newInput.xmax) {
+			newInput.xmin = 0;
+			newInput.xmax = this->getWidth();
+		}
+	}
+	if (m_wrappingType == 2 || m_wrappingType == 3) {
+		// wrap only on the y-axis if tile is wrapping
+		newInput.ymin = getWrappedOriginalYPos(input->ymin);
+		newInput.ymax = getWrappedOriginalYPos(input->ymax);
+		if (newInput.ymin > newInput.ymax) {
+			newInput.ymin = 0;
+			newInput.ymax = this->getHeight();
+		}
+	}
+
+	return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
+}
+
+void WrapOperation::setWrapping(int wrapping_type)
+{
+	m_wrappingType = wrapping_type;
+}
-- 
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