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 // Copyright (c) 2012 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 "cobalt/math/point3_f.h" #include "base/basictypes.h" #include "testing/gtest/include/gtest/gtest.h" namespace cobalt { namespace math { TEST(Point3Test, VectorArithmetic) { Point3F a(1.6f, 5.1f, 3.2f); Vector3dF v1(3.1f, -3.2f, 9.3f); Vector3dF v2(-8.1f, 1.2f, 3.3f); static const struct { Point3F expected; Point3F actual; } tests[] = {{Point3F(4.7f, 1.9f, 12.5f), a + v1}, {Point3F(-1.5f, 8.3f, -6.1f), a - v1}, {a, a - v1 + v1}, {a, a + v1 - v1}, {a, a + Vector3dF()}, {Point3F(12.8f, 0.7f, 9.2f), a + v1 - v2}, {Point3F(-9.6f, 9.5f, -2.8f), a - v1 + v2}}; for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) EXPECT_EQ(tests[i].expected.ToString(), tests[i].actual.ToString()); a += v1; EXPECT_EQ(Point3F(4.7f, 1.9f, 12.5f).ToString(), a.ToString()); a -= v2; EXPECT_EQ(Point3F(12.8f, 0.7f, 9.2f).ToString(), a.ToString()); } TEST(Point3Test, VectorFromPoints) { Point3F a(1.6f, 5.2f, 3.2f); Vector3dF v1(3.1f, -3.2f, 9.3f); Point3F b(a + v1); EXPECT_EQ((b - a).ToString(), v1.ToString()); } TEST(Point3Test, Scale) { EXPECT_EQ(Point3F().ToString(), ScalePoint(Point3F(), 2.f).ToString()); EXPECT_EQ(Point3F().ToString(), ScalePoint(Point3F(), 2.f, 2.f, 2.f).ToString()); EXPECT_EQ(Point3F(2.f, -2.f, 4.f).ToString(), ScalePoint(Point3F(1.f, -1.f, 2.f), 2.f).ToString()); EXPECT_EQ(Point3F(2.f, -3.f, 8.f).ToString(), ScalePoint(Point3F(1.f, -1.f, 2.f), 2.f, 3.f, 4.f).ToString()); Point3F zero; zero.Scale(2.f); zero.Scale(6.f, 3.f, 1.5f); EXPECT_EQ(Point3F().ToString(), zero.ToString()); Point3F point(1.f, -1.f, 2.f); point.Scale(2.f); point.Scale(6.f, 3.f, 1.5f); EXPECT_EQ(Point3F(12.f, -6.f, 6.f).ToString(), point.ToString()); } } // namespace math } // namespace cobalt