1 /*
2 * Copyright 2024 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 @file:JvmName("MathAssertions")
18
19 package androidx.xr.runtime.testing.math
20
21 import androidx.xr.runtime.math.Pose
22 import androidx.xr.runtime.math.Quaternion
23 import androidx.xr.runtime.math.Vector3
24 import com.google.common.truth.Truth.assertThat
25
26 /**
27 * Asserts that two [Vector3]s are equal.
28 *
29 * @param actual the actual [Vector3] to compare
30 * @param expected the expected [Vector3] to compare
31 * @param epsilon the maximum difference allowed between the two [Vector3] objects
32 */
33 @JvmOverloads
assertVector3null34 public fun assertVector3(actual: Vector3, expected: Vector3, epsilon: Float = 1e-5f) {
35 assertThat(actual.x).isWithin(epsilon).of(expected.x)
36 assertThat(actual.y).isWithin(epsilon).of(expected.y)
37 assertThat(actual.z).isWithin(epsilon).of(expected.z)
38 }
39
40 /**
41 * Asserts that two [Quaternion]s are equal.
42 *
43 * @param actual the actual [Quaternion] to compare
44 * @param expected the expected [Quaternion] to compare
45 * @param epsilon the maximum difference allowed between the two [Quaternion] objects
46 */
47 @JvmOverloads
assertRotationnull48 public fun assertRotation(actual: Quaternion, expected: Quaternion, epsilon: Float = 1e-5f) {
49 val dot = Math.abs(actual.toNormalized().dot(expected.toNormalized()))
50 assertThat(dot).isWithin(epsilon).of(1.0f)
51 }
52
53 /**
54 * Asserts that two [Pose]s are equal.
55 *
56 * @param actual the actual [Pose] to compare
57 * @param expected the expected [Pose] to compare
58 * @param epsilon the maximum difference allowed between the two [Pose] objects
59 */
60 @JvmOverloads
assertPosenull61 public fun assertPose(actual: Pose, expected: Pose, epsilon: Float = 1e-5f) {
62 assertVector3(actual.translation, expected.translation, epsilon)
63 assertRotation(actual.rotation, expected.rotation, epsilon)
64 }
65