1 files changed, 102 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc b/source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc
new file mode 100644
index 00000000000..75c2ae51bde
--- /dev/null
+++ b/source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc
@@ -0,0 +1,102 @@
+/*
+ * 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_GlareSimpleStarOperation.h"
+
+void GlareSimpleStarOperation::generateGlare(float *data,
+                                             MemoryBuffer *inputTile,
+                                             NodeGlare *settings)
+{
+  int i, x, y, ym, yp, xm, xp;
+  float c[4] = {0, 0, 0, 0}, tc[4] = {0, 0, 0, 0};
+  const float f1 = 1.0f - settings->fade;
+  const float f2 = (1.0f - f1) * 0.5f;
+
+  MemoryBuffer *tbuf1 = inputTile->duplicate();
+  MemoryBuffer *tbuf2 = inputTile->duplicate();
+
+  bool breaked = false;
+  for (i = 0; i < settings->iter && (!breaked); i++) {
+    //      // (x || x-1, y-1) to (x || x+1, y+1)
+    //      // F
+    for (y = 0; y < this->getHeight() && (!breaked); y++) {
+      ym = y - i;
+      yp = y + i;
+      for (x = 0; x < this->getWidth(); x++) {
+        xm = x - i;
+        xp = x + i;
+        tbuf1->read(c, x, y);
+        mul_v3_fl(c, f1);
+        tbuf1->read(tc, (settings->star_45 ? xm : x), ym);
+        madd_v3_v3fl(c, tc, f2);
+        tbuf1->read(tc, (settings->star_45 ? xp : x), yp);
+        madd_v3_v3fl(c, tc, f2);
+        c[3] = 1.0f;
+        tbuf1->writePixel(x, y, c);
+
+        tbuf2->read(c, x, y);
+        mul_v3_fl(c, f1);
+        tbuf2->read(tc, xm, (settings->star_45 ? yp : y));
+        madd_v3_v3fl(c, tc, f2);
+        tbuf2->read(tc, xp, (settings->star_45 ? ym : y));
+        madd_v3_v3fl(c, tc, f2);
+        c[3] = 1.0f;
+        tbuf2->writePixel(x, y, c);
+      }
+      if (isBraked()) {
+        breaked = true;
+      }
+    }
+    //      // B
+    for (y = this->getHeight() - 1; y >= 0 && (!breaked); y--) {
+      ym = y - i;
+      yp = y + i;
+      for (x = this->getWidth() - 1; x >= 0; x--) {
+        xm = x - i;
+        xp = x + i;
+        tbuf1->read(c, x, y);
+        mul_v3_fl(c, f1);
+        tbuf1->read(tc, (settings->star_45 ? xm : x), ym);
+        madd_v3_v3fl(c, tc, f2);
+        tbuf1->read(tc, (settings->star_45 ? xp : x), yp);
+        madd_v3_v3fl(c, tc, f2);
+        c[3] = 1.0f;
+        tbuf1->writePixel(x, y, c);
+
+        tbuf2->read(c, x, y);
+        mul_v3_fl(c, f1);
+        tbuf2->read(tc, xm, (settings->star_45 ? yp : y));
+        madd_v3_v3fl(c, tc, f2);
+        tbuf2->read(tc, xp, (settings->star_45 ? ym : y));
+        madd_v3_v3fl(c, tc, f2);
+        c[3] = 1.0f;
+        tbuf2->writePixel(x, y, c);
+      }
+      if (isBraked()) {
+        breaked = true;
+      }
+    }
+  }
+
+  for (i = 0; i < this->getWidth() * this->getHeight() * 4; i++) {
+    data[i] = tbuf1->getBuffer()[i] + tbuf2->getBuffer()[i];
+  }
+
+  delete tbuf1;
+  delete tbuf2;
+}