Update cc snapshot to r127918

cc/FloatQuadTest.cpp

+// Copyright 2011 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.
+
+#include "config.h"
+
+#include "CCMathUtil.h"
+#include "FloatQuad.h"
+#include <gtest/gtest.h>
+#include <public/WebTransformationMatrix.h>
+
+using namespace WebCore;
+using WebKit::WebTransformationMatrix;
+
+namespace {
+
+TEST(FloatQuadTest, IsRectilinearTest)
+{
+    const int numRectilinear = 8;
+    WebTransformationMatrix rectilinearTrans[numRectilinear];
+    rectilinearTrans[1].rotate(90);
+    rectilinearTrans[2].rotate(180);
+    rectilinearTrans[3].rotate(270);
+    rectilinearTrans[4].skewX(0.00000000001);
+    rectilinearTrans[5].skewY(0.00000000001);
+    rectilinearTrans[6].scale(0.00001);
+    rectilinearTrans[6].rotate(180);
+    rectilinearTrans[7].scale(100000);
+    rectilinearTrans[7].rotate(180);
+
+    for (int i = 0; i < numRectilinear; ++i) {
+        bool clipped = false;
+        FloatQuad quad = CCMathUtil::mapQuad(rectilinearTrans[i], FloatRect(0.01010101f, 0.01010101f, 100.01010101f, 100.01010101f), clipped);
+        ASSERT_TRUE(!clipped);
+        EXPECT_TRUE(quad.isRectilinear());
+    }
+
+    const int numNonRectilinear = 10;
+    WebTransformationMatrix nonRectilinearTrans[numNonRectilinear];
+    nonRectilinearTrans[0].rotate(359.999);
+    nonRectilinearTrans[1].rotate(0.0000001);
+    nonRectilinearTrans[2].rotate(89.999999);
+    nonRectilinearTrans[3].rotate(90.0000001);
+    nonRectilinearTrans[4].rotate(179.999999);
+    nonRectilinearTrans[5].rotate(180.0000001);
+    nonRectilinearTrans[6].rotate(269.999999);
+    nonRectilinearTrans[7].rotate(270.0000001);
+    nonRectilinearTrans[8].skewX(0.00001);
+    nonRectilinearTrans[9].skewY(0.00001);
+
+    for (int i = 0; i < numNonRectilinear; ++i) {
+        bool clipped = false;
+        FloatQuad quad = CCMathUtil::mapQuad(nonRectilinearTrans[i], FloatRect(0.01010101f, 0.01010101f, 100.01010101f, 100.01010101f), clipped);
+        ASSERT_TRUE(!clipped);
+        EXPECT_FALSE(quad.isRectilinear());
+    }
+}
+
+} // empty namespace