1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "base/basictypes.h"
6#include "testing/gtest/include/gtest/gtest.h"
7#include "ui/gfx/geometry/point3_f.h"
8
9namespace gfx {
10
11TEST(Point3Test, VectorArithmetic) {
12  gfx::Point3F a(1.6f, 5.1f, 3.2f);
13  gfx::Vector3dF v1(3.1f, -3.2f, 9.3f);
14  gfx::Vector3dF v2(-8.1f, 1.2f, 3.3f);
15
16  static const struct {
17    gfx::Point3F expected;
18    gfx::Point3F actual;
19  } tests[] = {
20    { gfx::Point3F(4.7f, 1.9f, 12.5f), a + v1 },
21    { gfx::Point3F(-1.5f, 8.3f, -6.1f), a - v1 },
22    { a, a - v1 + v1 },
23    { a, a + v1 - v1 },
24    { a, a + gfx::Vector3dF() },
25    { gfx::Point3F(12.8f, 0.7f, 9.2f), a + v1 - v2 },
26    { gfx::Point3F(-9.6f, 9.5f, -2.8f), a - v1 + v2 }
27  };
28
29  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i)
30    EXPECT_EQ(tests[i].expected.ToString(),
31              tests[i].actual.ToString());
32
33  a += v1;
34  EXPECT_EQ(Point3F(4.7f, 1.9f, 12.5f).ToString(), a.ToString());
35
36  a -= v2;
37  EXPECT_EQ(Point3F(12.8f, 0.7f, 9.2f).ToString(), a.ToString());
38}
39
40TEST(Point3Test, VectorFromPoints) {
41  gfx::Point3F a(1.6f, 5.2f, 3.2f);
42  gfx::Vector3dF v1(3.1f, -3.2f, 9.3f);
43
44  gfx::Point3F b(a + v1);
45  EXPECT_EQ((b - a).ToString(), v1.ToString());
46}
47
48TEST(Point3Test, Scale) {
49  EXPECT_EQ(Point3F().ToString(), ScalePoint(Point3F(), 2.f).ToString());
50  EXPECT_EQ(Point3F().ToString(),
51            ScalePoint(Point3F(), 2.f, 2.f, 2.f).ToString());
52
53  EXPECT_EQ(Point3F(2.f, -2.f, 4.f).ToString(),
54            ScalePoint(Point3F(1.f, -1.f, 2.f), 2.f).ToString());
55  EXPECT_EQ(Point3F(2.f, -3.f, 8.f).ToString(),
56            ScalePoint(Point3F(1.f, -1.f, 2.f), 2.f, 3.f, 4.f).ToString());
57
58  Point3F zero;
59  zero.Scale(2.f);
60  zero.Scale(6.f, 3.f, 1.5f);
61  EXPECT_EQ(Point3F().ToString(), zero.ToString());
62
63  Point3F point(1.f, -1.f, 2.f);
64  point.Scale(2.f);
65  point.Scale(6.f, 3.f, 1.5f);
66  EXPECT_EQ(Point3F(12.f, -6.f, 6.f).ToString(), point.ToString());
67}
68
69}  // namespace gfx
70