1 files changed, 74 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_FlipOperation.cc b/source/blender/compositor/operations/COM_FlipOperation.cc
new file mode 100644
index 00000000000..37eaf4868d3
--- /dev/null
+++ b/source/blender/compositor/operations/COM_FlipOperation.cc
@@ -0,0 +1,74 @@
+/*
+ * 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.
+ *
+ * Copyright 2011, Blender Foundation.
+ */
+
+#include "COM_FlipOperation.h"
+
+FlipOperation::FlipOperation()
+{
+  this->addInputSocket(COM_DT_COLOR);
+  this->addOutputSocket(COM_DT_COLOR);
+  this->setResolutionInputSocketIndex(0);
+  this->m_inputOperation = nullptr;
+  this->m_flipX = true;
+  this->m_flipY = false;
+}
+void FlipOperation::initExecution()
+{
+  this->m_inputOperation = this->getInputSocketReader(0);
+}
+
+void FlipOperation::deinitExecution()
+{
+  this->m_inputOperation = nullptr;
+}
+
+void FlipOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
+{
+  float nx = this->m_flipX ? ((int)this->getWidth() - 1) - x : x;
+  float ny = this->m_flipY ? ((int)this->getHeight() - 1) - y : y;
+
+  this->m_inputOperation->readSampled(output, nx, ny, sampler);
+}
+
+bool FlipOperation::determineDependingAreaOfInterest(rcti *input,
+                                                     ReadBufferOperation *readOperation,
+                                                     rcti *output)
+{
+  rcti newInput;
+
+  if (this->m_flipX) {
+    const int w = (int)this->getWidth() - 1;
+    newInput.xmax = (w - input->xmin) + 1;
+    newInput.xmin = (w - input->xmax) - 1;
+  }
+  else {
+    newInput.xmin = input->xmin;
+    newInput.xmax = input->xmax;
+  }
+  if (this->m_flipY) {
+    const int h = (int)this->getHeight() - 1;
+    newInput.ymax = (h - input->ymin) + 1;
+    newInput.ymin = (h - input->ymax) - 1;
+  }
+  else {
+    newInput.ymin = input->ymin;
+    newInput.ymax = input->ymax;
+  }
+
+  return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
+}