1/*
2 * Copyright 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "RegionTest"
18
19#include <stdlib.h>
20#include <ui/Region.h>
21#include <ui/Rect.h>
22#include <gtest/gtest.h>
23
24#include <ui/mat4.h>
25
26namespace android {
27
28class MatTest : public testing::Test {
29protected:
30};
31
32TEST_F(MatTest, Basics) {
33    mat4 m0;
34    EXPECT_EQ(sizeof(mat4), sizeof(float)*16);
35}
36
37TEST_F(MatTest, ComparisonOps) {
38    mat4 m0;
39    mat4 m1(2);
40
41    EXPECT_TRUE(m0 == m0);
42    EXPECT_TRUE(m0 != m1);
43    EXPECT_FALSE(m0 != m0);
44    EXPECT_FALSE(m0 == m1);
45}
46
47TEST_F(MatTest, Constructors) {
48    mat4 m0;
49    ASSERT_EQ(m0[0].x, 1);
50    ASSERT_EQ(m0[0].y, 0);
51    ASSERT_EQ(m0[0].z, 0);
52    ASSERT_EQ(m0[0].w, 0);
53    ASSERT_EQ(m0[1].x, 0);
54    ASSERT_EQ(m0[1].y, 1);
55    ASSERT_EQ(m0[1].z, 0);
56    ASSERT_EQ(m0[1].w, 0);
57    ASSERT_EQ(m0[2].x, 0);
58    ASSERT_EQ(m0[2].y, 0);
59    ASSERT_EQ(m0[2].z, 1);
60    ASSERT_EQ(m0[2].w, 0);
61    ASSERT_EQ(m0[3].x, 0);
62    ASSERT_EQ(m0[3].y, 0);
63    ASSERT_EQ(m0[3].z, 0);
64    ASSERT_EQ(m0[3].w, 1);
65
66    mat4 m1(2);
67    mat4 m2(vec4(2));
68    mat4 m3(m2);
69
70    EXPECT_EQ(m1, m2);
71    EXPECT_EQ(m2, m3);
72    EXPECT_EQ(m3, m1);
73
74    mat4 m4(vec4(1), vec4(2), vec4(3), vec4(4));
75}
76
77TEST_F(MatTest, ArithmeticOps) {
78    mat4 m0;
79    mat4 m1(2);
80    mat4 m2(vec4(2));
81
82    m1 += m2;
83    EXPECT_EQ(mat4(4), m1);
84
85    m2 -= m1;
86    EXPECT_EQ(mat4(-2), m2);
87
88    m1 *= 2;
89    EXPECT_EQ(mat4(8), m1);
90
91    m1 /= 2;
92    EXPECT_EQ(mat4(4), m1);
93
94    m0 = -m0;
95    EXPECT_EQ(mat4(-1), m0);
96}
97
98TEST_F(MatTest, UnaryOps) {
99    const mat4 identity;
100    mat4 m0;
101
102    ++m0;
103    EXPECT_EQ(mat4( vec4(2,1,1,1), vec4(1,2,1,1), vec4(1,1,2,1), vec4(1,1,1,2) ), m0);
104    EXPECT_EQ(mat4( -vec4(2,1,1,1), -vec4(1,2,1,1), -vec4(1,1,2,1), -vec4(1,1,1,2) ), -m0);
105
106    --m0;
107    EXPECT_EQ(identity, m0);
108}
109
110TEST_F(MatTest, MiscOps) {
111    const mat4 identity;
112    mat4 m0;
113    EXPECT_EQ(4, trace(m0));
114
115    mat4 m1(vec4(1,2,3,4), vec4(5,6,7,8), vec4(9,10,11,12), vec4(13,14,15,16));
116    mat4 m2(vec4(1,5,9,13), vec4(2,6,10,14), vec4(3,7,11,15), vec4(4,8,12,16));
117    EXPECT_EQ(m1, transpose(m2));
118    EXPECT_EQ(m2, transpose(m1));
119    EXPECT_EQ(vec4(1,6,11,16), diag(m1));
120
121    EXPECT_EQ(identity, inverse(identity));
122
123    mat4 m3(vec4(4,3,0,0), vec4(3,2,0,0), vec4(0,0,1,0), vec4(0,0,0,1));
124    mat4 m3i(inverse(m3));
125    EXPECT_FLOAT_EQ(-2, m3i[0][0]);
126    EXPECT_FLOAT_EQ( 3, m3i[0][1]);
127    EXPECT_FLOAT_EQ( 3, m3i[1][0]);
128    EXPECT_FLOAT_EQ(-4, m3i[1][1]);
129
130    mat4 m3ii(inverse(m3i));
131    EXPECT_FLOAT_EQ(m3[0][0], m3ii[0][0]);
132    EXPECT_FLOAT_EQ(m3[0][1], m3ii[0][1]);
133    EXPECT_FLOAT_EQ(m3[1][0], m3ii[1][0]);
134    EXPECT_FLOAT_EQ(m3[1][1], m3ii[1][1]);
135
136    EXPECT_EQ(m1, m1*identity);
137}
138
139}; // namespace android
140