1 /*
2 * Copyright (C) 2016 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 #include <gtest/gtest.h>
18
19 #include <Interpolator.h>
20
21 namespace android {
22 namespace uirenderer {
23
24 struct TestData {
25 const std::vector<float> x;
26 const std::vector<float> y;
27 const std::vector<float> inFraction;
28 const std::vector<float> outFraction;
29 };
30
31 const static TestData sTestDataSet[] = {
32 {
33 // Straight line as a path.
34 {0.0f, 1.0f},
35 {0.0f, 1.0f},
36 {0.0f, 0.2f, 0.4f, 0.6f, 0.8f, 1.0f},
37 {0.0f, 0.2f, 0.4f, 0.6f, 0.8f, 1.0f},
38 },
39
40 {
41 {
42 0.0f, 0.5f, 0.5178955f, 0.5341797f, 0.5489991f, 0.5625f, 0.5748291f,
43 0.5861328f, 0.60625005f, 0.62402344f, 0.640625f, 0.675f, 0.6951172f,
44 0.71875f, 0.7470703f, 0.78125f, 0.82246095f, 0.84606934f, 0.871875f,
45 0.9000244f, 0.93066406f, 0.96394044f, 1.0f
46 },
47 {
48 0.0f, 0.0f, 0.0028686523f, 0.011230469f, 0.024719238f, 0.04296875f,
49 0.06561279f, 0.092285156f, 0.15625f, 0.2319336f, 0.31640625f, 0.5f,
50 0.5932617f, 0.68359375f, 0.7680664f, 0.84375f, 0.90771484f, 0.9343872f,
51 0.95703125f, 0.97528076f, 0.98876953f, 0.99713135f, 1.0f
52 },
53 {
54 0.0f, 0.03375840187072754f, 0.13503384590148926f, 0.23630905151367188f,
55 0.336834192276001f, 0.4508626461029053f, 0.564141035079956f,
56 0.6781694889068604f, 0.7921979427337646f, 0.9054763317108154f, 1.0f
57 },
58 {
59 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0459827296435833f,
60 0.5146934390068054f, 0.8607426285743713f, 0.9776809215545654f, 1.0f
61
62 }
63
64 },
65 {
66 {
67 0.0f, 0.017895509f, 0.034179688f, 0.048999026f, 0.0625f, 0.0748291f,
68 0.08613282f, 0.10625f, 0.12402344f, 0.140625f, 0.17500001f, 0.19511719f,
69 0.21875f, 0.24707031f, 0.28125f, 0.32246095f, 0.34606934f, 0.371875f,
70 0.4000244f, 0.43066406f, 0.46394044f, 0.5f, 1.0f
71 },
72 {
73 0.0f, 0.0028686523f, 0.011230469f, 0.024719238f, 0.04296875f, 0.06561279f,
74 0.092285156f, 0.15625f, 0.2319336f, 0.31640625f, 0.5f, 0.5932617f,
75 0.68359375f, 0.7680664f, 0.84375f, 0.90771484f, 0.9343872f, 0.95703125f,
76 0.97528076f, 0.98876953f, 0.99713135f, 1.0f, 1.0f
77 },
78 {
79 0.0f, 0.102020263671875f, 0.20330810546875f, 0.3165740966796875f,
80 0.43060302734375f, 0.5318756103515625f, 0.6331634521484375f,
81 0.746429443359375f, 0.84771728515625f, 0.9617462158203125f, 1.0f
82 },
83 {
84 0.0f, 0.14280107617378235f, 0.6245699524879456f, 0.8985776901245117f,
85 0.9887426495552063f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f
86 }
87 },
88
89
90 };
91
getX(const TestData & data)92 static std::vector<float> getX(const TestData& data) {
93 return data.x;
94 }
95
getY(const TestData & data)96 static std::vector<float> getY(const TestData& data) {
97 return data.y;
98 }
99
TEST(Interpolator,pathInterpolation)100 TEST(Interpolator, pathInterpolation) {
101 for (const TestData& data: sTestDataSet) {
102 PathInterpolator interpolator(getX(data), getY(data));
103 for (size_t i = 0; i < data.inFraction.size(); i++) {
104 EXPECT_FLOAT_EQ(data.outFraction[i], interpolator.interpolate(data.inFraction[i]));
105 }
106 }
107 }
108
109 }
110 }
111