1 files changed, 119 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_EllipseMaskOperation.cc b/source/blender/compositor/operations/COM_EllipseMaskOperation.cc
new file mode 100644
index 00000000000..a6985a40625
--- /dev/null
+++ b/source/blender/compositor/operations/COM_EllipseMaskOperation.cc
@@ -0,0 +1,119 @@
+/*
+ * 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_EllipseMaskOperation.h"
+#include "BLI_math.h"
+#include "DNA_node_types.h"
+
+EllipseMaskOperation::EllipseMaskOperation()
+{
+  this->addInputSocket(COM_DT_VALUE);
+  this->addInputSocket(COM_DT_VALUE);
+  this->addOutputSocket(COM_DT_VALUE);
+  this->m_inputMask = nullptr;
+  this->m_inputValue = nullptr;
+  this->m_cosine = 0.0f;
+  this->m_sine = 0.0f;
+}
+void EllipseMaskOperation::initExecution()
+{
+  this->m_inputMask = this->getInputSocketReader(0);
+  this->m_inputValue = this->getInputSocketReader(1);
+  const double rad = (double)this->m_data->rotation;
+  this->m_cosine = cos(rad);
+  this->m_sine = sin(rad);
+  this->m_aspectRatio = ((float)this->getWidth()) / this->getHeight();
+}
+
+void EllipseMaskOperation::executePixelSampled(float output[4],
+                                               float x,
+                                               float y,
+                                               PixelSampler sampler)
+{
+  float inputMask[4];
+  float inputValue[4];
+
+  float rx = x / this->getWidth();
+  float ry = y / this->getHeight();
+
+  const float dy = (ry - this->m_data->y) / this->m_aspectRatio;
+  const float dx = rx - this->m_data->x;
+  rx = this->m_data->x + (this->m_cosine * dx + this->m_sine * dy);
+  ry = this->m_data->y + (-this->m_sine * dx + this->m_cosine * dy);
+
+  this->m_inputMask->readSampled(inputMask, x, y, sampler);
+  this->m_inputValue->readSampled(inputValue, x, y, sampler);
+
+  const float halfHeight = (this->m_data->height) / 2.0f;
+  const float halfWidth = this->m_data->width / 2.0f;
+  float sx = rx - this->m_data->x;
+  sx *= sx;
+  const float tx = halfWidth * halfWidth;
+  float sy = ry - this->m_data->y;
+  sy *= sy;
+  const float ty = halfHeight * halfHeight;
+
+  bool inside = ((sx / tx) + (sy / ty)) < 1.0f;
+
+  switch (this->m_maskType) {
+    case CMP_NODE_MASKTYPE_ADD:
+      if (inside) {
+        output[0] = MAX2(inputMask[0], inputValue[0]);
+      }
+      else {
+        output[0] = inputMask[0];
+      }
+      break;
+    case CMP_NODE_MASKTYPE_SUBTRACT:
+      if (inside) {
+        output[0] = inputMask[0] - inputValue[0];
+        CLAMP(output[0], 0, 1);
+      }
+      else {
+        output[0] = inputMask[0];
+      }
+      break;
+    case CMP_NODE_MASKTYPE_MULTIPLY:
+      if (inside) {
+        output[0] = inputMask[0] * inputValue[0];
+      }
+      else {
+        output[0] = 0;
+      }
+      break;
+    case CMP_NODE_MASKTYPE_NOT:
+      if (inside) {
+        if (inputMask[0] > 0.0f) {
+          output[0] = 0;
+        }
+        else {
+          output[0] = inputValue[0];
+        }
+      }
+      else {
+        output[0] = inputMask[0];
+      }
+      break;
+  }
+}
+
+void EllipseMaskOperation::deinitExecution()
+{
+  this->m_inputMask = nullptr;
+  this->m_inputValue = nullptr;
+}