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 "ui/gfx/point3_f.h"
6
7 #include "base/basictypes.h"
8 #include "testing/gtest/include/gtest/gtest.h"
9
10 namespace gfx {
11
TEST(Point3Test,VectorArithmetic)12 TEST(Point3Test, VectorArithmetic) {
13 gfx::Point3F a(1.6f, 5.1f, 3.2f);
14 gfx::Vector3dF v1(3.1f, -3.2f, 9.3f);
15 gfx::Vector3dF v2(-8.1f, 1.2f, 3.3f);
16
17 static const struct {
18 gfx::Point3F expected;
19 gfx::Point3F actual;
20 } tests[] = {
21 { gfx::Point3F(4.7f, 1.9f, 12.5f), a + v1 },
22 { gfx::Point3F(-1.5f, 8.3f, -6.1f), a - v1 },
23 { a, a - v1 + v1 },
24 { a, a + v1 - v1 },
25 { a, a + gfx::Vector3dF() },
26 { gfx::Point3F(12.8f, 0.7f, 9.2f), a + v1 - v2 },
27 { gfx::Point3F(-9.6f, 9.5f, -2.8f), a - v1 + v2 }
28 };
29
30 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i)
31 EXPECT_EQ(tests[i].expected.ToString(),
32 tests[i].actual.ToString());
33
34 a += v1;
35 EXPECT_EQ(Point3F(4.7f, 1.9f, 12.5f).ToString(), a.ToString());
36
37 a -= v2;
38 EXPECT_EQ(Point3F(12.8f, 0.7f, 9.2f).ToString(), a.ToString());
39 }
40
TEST(Point3Test,VectorFromPoints)41 TEST(Point3Test, VectorFromPoints) {
42 gfx::Point3F a(1.6f, 5.2f, 3.2f);
43 gfx::Vector3dF v1(3.1f, -3.2f, 9.3f);
44
45 gfx::Point3F b(a + v1);
46 EXPECT_EQ((b - a).ToString(), v1.ToString());
47 }
48
TEST(Point3Test,Scale)49 TEST(Point3Test, Scale) {
50 EXPECT_EQ(Point3F().ToString(), ScalePoint(Point3F(), 2.f).ToString());
51 EXPECT_EQ(Point3F().ToString(),
52 ScalePoint(Point3F(), 2.f, 2.f, 2.f).ToString());
53
54 EXPECT_EQ(Point3F(2.f, -2.f, 4.f).ToString(),
55 ScalePoint(Point3F(1.f, -1.f, 2.f), 2.f).ToString());
56 EXPECT_EQ(Point3F(2.f, -3.f, 8.f).ToString(),
57 ScalePoint(Point3F(1.f, -1.f, 2.f), 2.f, 3.f, 4.f).ToString());
58
59 Point3F zero;
60 zero.Scale(2.f);
61 zero.Scale(6.f, 3.f, 1.5f);
62 EXPECT_EQ(Point3F().ToString(), zero.ToString());
63
64 Point3F point(1.f, -1.f, 2.f);
65 point.Scale(2.f);
66 point.Scale(6.f, 3.f, 1.5f);
67 EXPECT_EQ(Point3F(12.f, -6.f, 6.f).ToString(), point.ToString());
68 }
69
70 } // namespace gfx
71