1 files changed, 694 insertions, 0 deletions
diff --git a/gfx/tests/gtest/TestBSPTree.cpp b/gfx/tests/gtest/TestBSPTree.cpp
new file mode 100644
index 0000000000..b5c6cda5dd
--- /dev/null
+++ b/gfx/tests/gtest/TestBSPTree.cpp
@@ -0,0 +1,694 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+
+#include "BSPTree.h"
+#include "Polygon.h"
+#include "PolygonTestUtils.h"
+
+#include <deque>
+#include <list>
+
+using namespace mozilla::gfx;
+using namespace mozilla::layers;
+typedef mozilla::gfx::Polygon MozPolygon;
+
+namespace {
+
+static void RunTest(std::deque<MozPolygon> aPolygons,
+                    std::deque<MozPolygon> aExpected) {
+  std::list<LayerPolygon> layers;
+  for (MozPolygon& polygon : aPolygons) {
+    layers.push_back(LayerPolygon(nullptr, std::move(polygon)));
+  }
+
+  const BSPTree tree(layers);
+  const nsTArray<LayerPolygon> order = tree.GetDrawOrder();
+
+  EXPECT_EQ(aExpected.size(), order.Length());
+
+  for (size_t i = 0; i < order.Length(); ++i) {
+    EXPECT_TRUE(aExpected[i] == *order[i].geometry);
+  }
+}
+
+}  // namespace
+
+TEST(BSPTree, SameNode)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{
+          Point4D(0.0f, 0.0f, 0.0f, 1.0f), Point4D(1.0f, 0.0f, 0.0f, 1.0f),
+          Point4D(1.0f, 1.0f, 0.0f, 1.0f), Point4D(0.0f, 1.0f, 0.0f, 1.0f)},
+      MozPolygon{
+          Point4D(0.0f, 0.0f, 0.0f, 1.0f), Point4D(1.0f, 0.0f, 0.0f, 1.0f),
+          Point4D(1.0f, 1.0f, 0.0f, 1.0f), Point4D(0.0f, 1.0f, 0.0f, 1.0f)}};
+
+  ::RunTest(polygons, polygons);
+}
+
+TEST(BSPTree, OneChild)
+{
+  const MozPolygon p1{
+      Point4D(0.0f, 0.0f, 0.0f, 1.0f), Point4D(1.0f, 0.0f, 0.0f, 1.0f),
+      Point4D(1.0f, 1.0f, 0.0f, 1.0f), Point4D(0.0f, 1.0f, 0.0f, 1.0f)};
+
+  const MozPolygon p2{
+      Point4D(0.0f, 0.0f, 1.0f, 1.0f), Point4D(1.0f, 0.0f, 1.0f, 1.0f),
+      Point4D(1.0f, 1.0f, 1.0f, 1.0f), Point4D(0.0f, 1.0f, 1.0f, 1.0f)};
+
+  ::RunTest({p1, p2}, {p1, p2});
+  ::RunTest({p2, p1}, {p1, p2});
+}
+
+TEST(BSPTree, SharedEdge1)
+{
+  MozPolygon p1{
+      Point4D(1.0f, 0.0f, 1.0f, 1.0f), Point4D(0.0f, 0.0f, 1.0f, 1.0f),
+      Point4D(0.0f, 1.0f, 1.0f, 1.0f), Point4D(1.0f, 1.0f, 1.0f, 1.0f)};
+
+  MozPolygon p2{
+      Point4D(1.0f, 0.0f, 1.0f, 1.0f), Point4D(1.0f, 1.0f, 1.0f, 1.0f),
+      Point4D(2.0f, 2.0f, 1.0f, 1.0f), Point4D(2.0f, 0.0f, 1.0f, 1.0f)};
+
+  ::RunTest({p1, p2}, {p1, p2});
+}
+
+TEST(BSPTree, SharedEdge2)
+{
+  MozPolygon p1{
+      Point4D(1.0f, 0.0f, 1.0f, 1.0f), Point4D(0.0f, 0.0f, 1.0f, 1.0f),
+      Point4D(0.0f, 1.0f, 1.0f, 1.0f), Point4D(1.0f, 1.0f, 1.0f, 1.0f)};
+
+  MozPolygon p2{
+      Point4D(1.0f, 0.0f, 1.0f, 1.0f), Point4D(1.0f, 1.0f, 1.0f, 1.0f),
+      Point4D(2.0f, 2.0f, 0.0f, 1.0f), Point4D(2.0f, 0.0f, 0.0f, 1.0f)};
+
+  ::RunTest({p1, p2}, {p2, p1});
+}
+
+TEST(BSPTree, SplitSharedEdge)
+{
+  MozPolygon p1{
+      Point4D(1.0f, 0.0f, 1.0f, 1.0f), Point4D(0.0f, 0.0f, 1.0f, 1.0f),
+      Point4D(0.0f, 1.0f, 1.0f, 1.0f), Point4D(1.0f, 1.0f, 1.0f, 1.0f)};
+
+  MozPolygon p2{
+      Point4D(1.0f, 0.0f, 2.0f, 1.0f), Point4D(1.0f, 1.0f, 2.0f, 1.0f),
+      Point4D(1.0f, 1.0f, 0.0f, 1.0f), Point4D(1.0f, 0.0f, 0.0f, 1.0f)};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{
+          Point4D(1.0f, 1.0f, 1.0f, 1.0f), Point4D(1.0f, 1.0f, 0.0f, 1.0f),
+          Point4D(1.0f, 0.0f, 0.0f, 1.0f), Point4D(1.0f, 0.0f, 1.0f, 1.0f)},
+      MozPolygon{
+          Point4D(1.0f, 0.0f, 1.0f, 1.0f), Point4D(0.0f, 0.0f, 1.0f, 1.0f),
+          Point4D(0.0f, 1.0f, 1.0f, 1.0f), Point4D(1.0f, 1.0f, 1.0f, 1.0f)},
+      MozPolygon{
+          Point4D(1.0f, 0.0f, 2.0f, 1.0f), Point4D(1.0f, 1.0f, 2.0f, 1.0f),
+          Point4D(1.0f, 1.0f, 1.0f, 1.0f), Point4D(1.0f, 0.0f, 1.0f, 1.0f)}};
+
+  ::RunTest({p1, p2}, expected);
+}
+
+TEST(BSPTree, SplitSimple1)
+{
+  MozPolygon p1{
+      Point4D(0.0f, 0.0f, 1.0f, 1.0f), Point4D(1.0f, 0.0f, 1.0f, 1.0f),
+      Point4D(1.0f, 1.0f, 1.0f, 1.0f), Point4D(0.0f, 1.0f, 1.0f, 1.0f)};
+
+  MozPolygon p2{
+      Point4D(0.0f, 0.0f, 2.0f, 1.0f), Point4D(1.0f, 0.0f, 2.0f, 1.0f),
+      Point4D(1.0f, 1.0f, 0.0f, 1.0f), Point4D(0.0f, 1.0f, 0.0f, 1.0f)};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{
+          Point4D(0.0f, 1.0f, 0.0f, 1.0f), Point4D(0.0f, 0.5f, 1.0f, 1.0f),
+          Point4D(1.0f, 0.5f, 1.0f, 1.0f), Point4D(1.0f, 1.0f, 0.0f, 1.0f)},
+      p1,
+      MozPolygon{
+          Point4D(0.0f, 0.0f, 2.0f, 1.0f), Point4D(1.0f, 0.0f, 2.0f, 1.0f),
+          Point4D(1.0f, 0.5f, 1.0f, 1.0f), Point4D(0.0f, 0.5f, 1.0f, 1.0f)}};
+
+  ::RunTest({p1, p2}, expected);
+}
+
+TEST(BSPTree, SplitSimple2)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-5.00000f, -5.00000f, 0.00000f, 1.0f),
+                 Point4D(-5.00000f, 5.00000f, 0.00000f, 1.0f),
+                 Point4D(5.00000f, 5.00000f, 0.00000f, 1.0f),
+                 Point4D(5.00000f, -5.00000f, 0.00000f, 1.0f)},
+      MozPolygon{Point4D(0.00000f, -5.00000f, -5.00000f, 1.0f),
+                 Point4D(0.00000f, 5.00000f, -5.00000f, 1.0f),
+                 Point4D(0.00000f, 5.00000f, 5.00000f, 1.0f),
+                 Point4D(0.00000f, -5.00000f, 5.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(0.00000f, -5.00000f, 0.00000f, 1.0f),
+                 Point4D(0.00000f, -5.00000f, -5.00000f, 1.0f),
+                 Point4D(0.00000f, 5.00000f, -5.00000f, 1.0f),
+                 Point4D(0.00000f, 5.00000f, 0.00000f, 1.0f)},
+      MozPolygon{Point4D(-5.00000f, -5.00000f, 0.00000f, 1.0f),
+                 Point4D(-5.00000f, 5.00000f, 0.00000f, 1.0f),
+                 Point4D(5.00000f, 5.00000f, 0.00000f, 1.0f),
+                 Point4D(5.00000f, -5.00000f, 0.00000f, 1.0f)},
+      MozPolygon{Point4D(0.00000f, 5.00000f, 0.00000f, 1.0f),
+                 Point4D(0.00000f, 5.00000f, 5.00000f, 1.0f),
+                 Point4D(0.00000f, -5.00000f, 5.00000f, 1.0f),
+                 Point4D(0.00000f, -5.00000f, 0.00000f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, NoSplit1)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(0.00000f, 10.00000f, 0.00000f, 1.0f),
+                 Point4D(0.00000f, 0.00000f, 0.00000f, 1.0f),
+                 Point4D(10.00000f, 0.00000f, 0.00000f, 1.0f),
+                 Point4D(10.00000f, 10.00000f, 0.00000f, 1.0f)},
+      MozPolygon{Point4D(0.00000f, 10.00000f, -5.00000f, 1.0f),
+                 Point4D(0.00000f, 0.00000f, -5.00000f, 1.0f),
+                 Point4D(10.00000f, 0.00000f, -5.00000f, 1.0f),
+                 Point4D(10.00000f, 10.00000f, -5.00000f, 1.0f)},
+      MozPolygon{Point4D(0.00000f, 10.00000f, 5.00000f, 1.0f),
+                 Point4D(0.00000f, 0.00000f, 5.00000f, 1.0f),
+                 Point4D(10.00000f, 0.00000f, 5.00000f, 1.0f),
+                 Point4D(10.00000f, 10.00000f, 5.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(0.00000f, 10.00000f, -5.00000f, 1.0f),
+                 Point4D(0.00000f, 0.00000f, -5.00000f, 1.0f),
+                 Point4D(10.00000f, 0.00000f, -5.00000f, 1.0f),
+                 Point4D(10.00000f, 10.00000f, -5.00000f, 1.0f)},
+      MozPolygon{Point4D(0.00000f, 10.00000f, 0.00000f, 1.0f),
+                 Point4D(0.00000f, 0.00000f, 0.00000f, 1.0f),
+                 Point4D(10.00000f, 0.00000f, 0.00000f, 1.0f),
+                 Point4D(10.00000f, 10.00000f, 0.00000f, 1.0f)},
+      MozPolygon{Point4D(0.00000f, 10.00000f, 5.00000f, 1.0f),
+                 Point4D(0.00000f, 0.00000f, 5.00000f, 1.0f),
+                 Point4D(10.00000f, 0.00000f, 5.00000f, 1.0f),
+                 Point4D(10.00000f, 10.00000f, 5.00000f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, NoSplit2)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-5.00000f, -5.00000f, 0.00000f, 1.0f),
+                 Point4D(-5.00000f, 5.00000f, 0.00000f, 1.0f),
+                 Point4D(5.00000f, 5.00000f, 0.00000f, 1.0f),
+                 Point4D(5.00000f, -5.00000f, 0.00000f, 1.0f)},
+      MozPolygon{Point4D(0.00000f, 5.00000f, -15.00000f, 1.0f),
+                 Point4D(0.00000f, -5.00000f, -15.00000f, 1.0f),
+                 Point4D(0.00000f, -5.00000f, -10.00000f, 1.0f),
+                 Point4D(0.00000f, 5.00000f, -10.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(0.00000f, 5.00000f, -15.00000f, 1.0f),
+                 Point4D(0.00000f, -5.00000f, -15.00000f, 1.0f),
+                 Point4D(0.00000f, -5.00000f, -10.00000f, 1.0f),
+                 Point4D(0.00000f, 5.00000f, -10.00000f, 1.0f)},
+      MozPolygon{Point4D(-5.00000f, -5.00000f, 0.00000f, 1.0f),
+                 Point4D(-5.00000f, 5.00000f, 0.00000f, 1.0f),
+                 Point4D(5.00000f, 5.00000f, 0.00000f, 1.0f),
+                 Point4D(5.00000f, -5.00000f, 0.00000f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate0degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, 2.00000f, 2.00000f, 1.0f),
+                 Point4D(-0.00000f, -2.00000f, 2.00000f, 1.0f),
+                 Point4D(0.00010f, -2.00000f, -2.00000f, 1.0f),
+                 Point4D(0.00010f, 2.00000f, -2.00000f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.00000f, 2.00000f, 1.0f),
+                 Point4D(2.00000f, -0.00000f, -2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00000f, -2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00010f, 2.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(2.00000f, 0.00000f, 2.00000f, 1.0f),
+                 Point4D(2.00000f, -0.00000f, -2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00000f, -2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00010f, 2.00000f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, 2.00000f, 2.00000f, 1.0f),
+                 Point4D(-0.00000f, -2.00000f, 2.00000f, 1.0f),
+                 Point4D(0.00010f, -2.00000f, -2.00000f, 1.0f),
+                 Point4D(0.00010f, 2.00000f, -2.00000f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate20degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(-0.00000f, -2.56340f, 1.19540f, 1.0f),
+                 Point4D(0.00010f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(0.00010f, 2.56350f, -1.19530f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(-0.00000f, -2.56340f, 1.19540f, 1.0f),
+                 Point4D(0.00010f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(0.00010f, 2.56350f, -1.19530f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate40degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, -0.73200f, 2.73210f, 1.0f),
+                 Point4D(-0.00000f, -2.73200f, -0.73200f, 1.0f),
+                 Point4D(0.00010f, 0.73210f, -2.73200f, 1.0f),
+                 Point4D(0.00010f, 2.73210f, 0.73210f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, 1.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, 1.00000f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, -0.73200f, 2.73210f, 1.0f),
+                 Point4D(-0.00000f, -2.73200f, -0.73200f, 1.0f),
+                 Point4D(0.00010f, 0.73210f, -2.73200f, 1.0f),
+                 Point4D(0.00010f, 2.73210f, 0.73210f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate60degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, -2.73200f, 0.73210f, 1.0f),
+                 Point4D(-0.00000f, -0.73200f, -2.73200f, 1.0f),
+                 Point4D(0.00010f, 2.73210f, -0.73200f, 1.0f),
+                 Point4D(0.00010f, 0.73210f, 2.73210f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, -1.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(-2.00000f, 1.26793f, 0.73210f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(2.00000f, 1.26793f, 0.73210f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, -2.73200f, 0.73210f, 1.0f),
+                 Point4D(-0.00000f, -0.73200f, -2.73200f, 1.0f),
+                 Point4D(0.00010f, 2.73210f, -0.73200f, 1.0f),
+                 Point4D(0.00010f, 0.73210f, 2.73210f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 1.26793f, 0.73210f, 1.0f),
+                 Point4D(2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(-2.00000f, 1.26793f, 0.73210f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate80degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(-0.00000f, 2.56350f, -1.19530f, 1.0f),
+                 Point4D(0.00010f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(0.00010f, -2.56340f, 1.19540f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(-0.00000f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(-0.00000f, 2.56350f, -1.19530f, 1.0f),
+                 Point4D(0.00010f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(0.00010f, -2.56340f, 1.19540f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate100degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, 2.73210f, -0.73200f, 1.0f),
+                 Point4D(-0.00000f, 0.73210f, 2.73210f, 1.0f),
+                 Point4D(0.00010f, -2.73200f, 0.73210f, 1.0f),
+                 Point4D(0.00010f, -0.73200f, -2.73200f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, 1.00010f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(2.00000f, -1.26783f, -0.73200f, 1.0f),
+                 Point4D(2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(-2.00000f, -1.26783f, -0.73200f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, 2.73210f, -0.73200f, 1.0f),
+                 Point4D(-0.00000f, 0.73210f, 2.73210f, 1.0f),
+                 Point4D(0.00010f, -2.73200f, 0.73210f, 1.0f),
+                 Point4D(0.00010f, -0.73200f, -2.73200f, 1.0f)},
+      MozPolygon{Point4D(-2.00000f, -1.26783f, -0.73200f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(2.00000f, -1.26783f, -0.73200f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate120degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, -0.73200f, 2.73210f, 1.0f),
+                 Point4D(-0.00000f, -2.73200f, -0.73200f, 1.0f),
+                 Point4D(0.00010f, 0.73210f, -2.73200f, 1.0f),
+                 Point4D(0.00010f, 2.73210f, 0.73210f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, 1.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, 1.00000f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, -0.73200f, 2.73210f, 1.0f),
+                 Point4D(-0.00000f, -2.73200f, -0.73200f, 1.0f),
+                 Point4D(0.00010f, 0.73210f, -2.73200f, 1.0f),
+                 Point4D(0.00010f, 2.73210f, 0.73210f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate140degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(-0.00000f, 2.56350f, -1.19530f, 1.0f),
+                 Point4D(0.00010f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(0.00010f, -2.56340f, 1.19540f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(-0.00000f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(-0.00000f, 2.56350f, -1.19530f, 1.0f),
+                 Point4D(0.00010f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(0.00010f, -2.56340f, 1.19540f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate160degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, 2.00000f, 2.00000f, 1.0f),
+                 Point4D(-0.00000f, -2.00000f, 2.00000f, 1.0f),
+                 Point4D(0.00010f, -2.00000f, -2.00000f, 1.0f),
+                 Point4D(0.00010f, 2.00000f, -2.00000f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(2.00000f, 0.00010f, -2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00010f, -2.00000f, 1.0f),
+                 Point4D(-2.00000f, -0.00000f, 2.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(2.00000f, 0.00010f, -2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00010f, -2.00000f, 1.0f),
+                 Point4D(-2.00000f, -0.00000f, 2.00000f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, 2.00000f, 2.00000f, 1.0f),
+                 Point4D(-0.00000f, -2.00000f, 2.00000f, 1.0f),
+                 Point4D(0.00010f, -2.00000f, -2.00000f, 1.0f),
+                 Point4D(0.00010f, 2.00000f, -2.00000f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate180degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, -2.00000f, -2.00000f, 1.0f),
+                 Point4D(-0.00000f, 2.00000f, -2.00000f, 1.0f),
+                 Point4D(0.00010f, 2.00000f, 2.00000f, 1.0f),
+                 Point4D(0.00010f, -2.00000f, 2.00000f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.00010f, -2.00000f, 1.0f),
+                 Point4D(2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00010f, -2.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(-0.00000f, -2.00000f, -2.00000f, 1.0f),
+                 Point4D(-0.00000f, 2.00000f, -2.00000f, 1.0f),
+                 Point4D(0.00010f, 2.00000f, 2.00000f, 1.0f),
+                 Point4D(0.00010f, -2.00000f, 2.00000f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.00010f, -2.00000f, 1.0f),
+                 Point4D(2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00010f, -2.00000f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate200degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(-0.00000f, -2.56340f, 1.19540f, 1.0f),
+                 Point4D(0.00010f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(0.00010f, 2.56350f, -1.19530f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(-0.00000f, -2.56340f, 1.19540f, 1.0f),
+                 Point4D(0.00010f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(0.00010f, 2.56350f, -1.19530f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate220degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, 0.73210f, -2.73200f, 1.0f),
+                 Point4D(-0.00000f, 2.73210f, 0.73210f, 1.0f),
+                 Point4D(0.00010f, -0.73200f, 2.73210f, 1.0f),
+                 Point4D(0.00010f, -2.73200f, -0.73200f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, -0.99990f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(-0.00000f, 0.73210f, -2.73200f, 1.0f),
+                 Point4D(-0.00000f, 2.73210f, 0.73210f, 1.0f),
+                 Point4D(0.00010f, -0.73200f, 2.73210f, 1.0f),
+                 Point4D(0.00010f, -2.73200f, -0.73200f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, -0.99990f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate240degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, -2.73200f, 0.73210f, 1.0f),
+                 Point4D(-0.00000f, -0.73200f, -2.73200f, 1.0f),
+                 Point4D(0.00010f, 2.73210f, -0.73200f, 1.0f),
+                 Point4D(0.00010f, 0.73210f, 2.73210f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, -1.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(-2.00000f, 1.26793f, 0.73210f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(2.00000f, 1.26793f, 0.73210f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, -2.73200f, 0.73210f, 1.0f),
+                 Point4D(-0.00000f, -0.73200f, -2.73200f, 1.0f),
+                 Point4D(0.00010f, 2.73210f, -0.73200f, 1.0f),
+                 Point4D(0.00010f, 0.73210f, 2.73210f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 1.26793f, 0.73210f, 1.0f),
+                 Point4D(2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(-2.00000f, 1.26793f, 0.73210f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate260degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(-0.00000f, -2.56340f, 1.19540f, 1.0f),
+                 Point4D(0.00010f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(0.00010f, 2.56350f, -1.19530f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(-0.00000f, -2.56340f, 1.19540f, 1.0f),
+                 Point4D(0.00010f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(0.00010f, 2.56350f, -1.19530f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate280degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, 2.73210f, -0.73200f, 1.0f),
+                 Point4D(-0.00000f, 0.73210f, 2.73210f, 1.0f),
+                 Point4D(0.00010f, -2.73200f, 0.73210f, 1.0f),
+                 Point4D(0.00010f, -0.73200f, -2.73200f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, 1.00010f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(2.00000f, -1.26783f, -0.73200f, 1.0f),
+                 Point4D(2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, -1.00000f, 1.0f),
+                 Point4D(-2.00000f, -1.26783f, -0.73200f, 1.0f)},
+      MozPolygon{Point4D(-0.00000f, 2.73210f, -0.73200f, 1.0f),
+                 Point4D(-0.00000f, 0.73210f, 2.73210f, 1.0f),
+                 Point4D(0.00010f, -2.73200f, 0.73210f, 1.0f),
+                 Point4D(0.00010f, -0.73200f, -2.73200f, 1.0f)},
+      MozPolygon{Point4D(-2.00000f, -1.26783f, -0.73200f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(2.00000f, 1.73210f, 1.00010f, 1.0f),
+                 Point4D(2.00000f, -1.26783f, -0.73200f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate300degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, 0.73210f, -2.73200f, 1.0f),
+                 Point4D(-0.00000f, 2.73210f, 0.73210f, 1.0f),
+                 Point4D(0.00010f, -0.73200f, 2.73210f, 1.0f),
+                 Point4D(0.00010f, -2.73200f, -0.73200f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, -0.99990f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(-0.00000f, 0.73210f, -2.73200f, 1.0f),
+                 Point4D(-0.00000f, 2.73210f, 0.73210f, 1.0f),
+                 Point4D(0.00010f, -0.73200f, 2.73210f, 1.0f),
+                 Point4D(0.00010f, -2.73200f, -0.73200f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 1.73210f, -0.99990f, 1.0f),
+                 Point4D(2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(-2.00000f, -1.73200f, 1.00000f, 1.0f),
+                 Point4D(-2.00000f, 1.73210f, -0.99990f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate320degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(-0.00000f, 2.56350f, -1.19530f, 1.0f),
+                 Point4D(0.00010f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(0.00010f, -2.56340f, 1.19540f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(-0.00000f, -1.19530f, -2.56340f, 1.0f),
+                 Point4D(-0.00000f, 2.56350f, -1.19530f, 1.0f),
+                 Point4D(0.00010f, 1.19540f, 2.56350f, 1.0f),
+                 Point4D(0.00010f, -2.56340f, 1.19540f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.68410f, -1.87930f, 1.0f),
+                 Point4D(2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, -0.68400f, 1.87940f, 1.0f),
+                 Point4D(-2.00000f, 0.68410f, -1.87930f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate340degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, -2.00000f, -2.00000f, 1.0f),
+                 Point4D(-0.00000f, 2.00000f, -2.00000f, 1.0f),
+                 Point4D(0.00010f, 2.00000f, 2.00000f, 1.0f),
+                 Point4D(0.00010f, -2.00000f, 2.00000f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.00010f, -2.00000f, 1.0f),
+                 Point4D(2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00010f, -2.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(-0.00000f, -2.00000f, -2.00000f, 1.0f),
+                 Point4D(-0.00000f, 2.00000f, -2.00000f, 1.0f),
+                 Point4D(0.00010f, 2.00000f, 2.00000f, 1.0f),
+                 Point4D(0.00010f, -2.00000f, 2.00000f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.00010f, -2.00000f, 1.0f),
+                 Point4D(2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00010f, -2.00000f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}
+
+TEST(BSPTree, TwoPlaneIntersectRotate360degrees)
+{
+  const std::deque<MozPolygon> polygons{
+      MozPolygon{Point4D(-0.00000f, -2.00000f, -2.00000f, 1.0f),
+                 Point4D(-0.00000f, 2.00000f, -2.00000f, 1.0f),
+                 Point4D(0.00010f, 2.00000f, 2.00000f, 1.0f),
+                 Point4D(0.00010f, -2.00000f, 2.00000f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.00010f, -2.00000f, 1.0f),
+                 Point4D(2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00010f, -2.00000f, 1.0f)}};
+
+  const std::deque<MozPolygon> expected{
+      MozPolygon{Point4D(-0.00000f, -2.00000f, -2.00000f, 1.0f),
+                 Point4D(-0.00000f, 2.00000f, -2.00000f, 1.0f),
+                 Point4D(0.00010f, 2.00000f, 2.00000f, 1.0f),
+                 Point4D(0.00010f, -2.00000f, 2.00000f, 1.0f)},
+      MozPolygon{Point4D(2.00000f, 0.00010f, -2.00000f, 1.0f),
+                 Point4D(2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, -0.00000f, 2.00000f, 1.0f),
+                 Point4D(-2.00000f, 0.00010f, -2.00000f, 1.0f)}};
+  ::RunTest(polygons, expected);
+}