WIP BSP Tree for 3D Layer Sorting

cc/output/bsp_controller.h

Index: cc/output/bsp_controller.h
diff --git a/cc/output/bsp_controller.h b/cc/output/bsp_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..cf2cf52e60868284cb6dd3e807988c880ac99a83
--- /dev/null
+++ b/cc/output/bsp_controller.h
@@ -0,0 +1,34 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CC_OUTPUT_BSP_CONTROLLER_H_
+#define CC_OUTPUT_BSP_CONTROLLER_H_
+
+#include "cc/output/bsp_compare_result.h"
+#include "cc/quads/draw_polygon.h"
+
+namespace cc {
+
+// Specialization of the BSP Controller abstract class that deals specifically

[enne (OOO), 2014/07/28 21:38:19]

This comment I think should just be removed.

+// with DrawPolygons
+class BspController {
+ public:
+  BspController();
+
+  // Returns whether or not nodeA is on one or the other side of nodeB,
+  // coplanar, or whether it crosses nodeB's plane and needs to be split
+  static BspCompareResult GetNodePositionRelative(const DrawPolygon& node_a,
+                                                  const DrawPolygon& node_b);
+  // Returns whether or not our viewer is in front of or behind the plane
+  // defined by this polygon/node
+  static BspCompareResult GetCameraPositionRelative(const DrawPolygon& node);
+  static bool SplitPolygon(scoped_ptr<DrawPolygon> polygon,
+                           const DrawPolygon& splitter,
+                           scoped_ptr<DrawPolygon>* front,
+                           scoped_ptr<DrawPolygon>* back);
+};
+
+}  // namespace cc
+
+#endif  // CC_OUTPUT_BSP_CONTROLLER_H_