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-<!DOCTYPE html>
-<html>
-<!--
-Copyright 2011 The Closure Library Authors. All Rights Reserved.
-
-Use of this source code is governed by the Apache License, Version 2.0.
-See the COPYING file for details.
--->
-<head>
-<meta http-equiv="X-UA-Compatible" content="IE=edge">
-<title>Closure Unit Tests - goog.vec.Vec3</title>
-<script src="../base.js"></script>
-<script>
- goog.require('goog.vec.Float32Array');
- goog.require('goog.vec.Vec3');
- goog.require('goog.testing.jsunit');
-</script>
-</head>
-<body>
-<script>
-
- function testDeprecatedConstructor() {
- var v = goog.vec.Vec3.create();
- assertElementsEquals(0, v[0]);
- assertEquals(0, v[1]);
- assertEquals(0, v[2]);
-
- assertElementsEquals([0, 0, 0], goog.vec.Vec3.create());
-
- assertElementsEquals([1, 2, 3], goog.vec.Vec3.createFromValues(1, 2, 3));
-
- assertElementsEquals([1, 2, 3], goog.vec.Vec3.createFromArray([1, 2, 3]));
-
- v = goog.vec.Vec3.createFromValues(1, 2, 3);
- assertElementsEquals([1, 2, 3], goog.vec.Vec3.clone(v));
- }
-
- function testConstructor() {
- var v = goog.vec.Vec3.createFloat32();
- assertElementsEquals(0, v[0]);
- assertEquals(0, v[1]);
- assertEquals(0, v[2]);
-
- assertElementsEquals([0, 0, 0], goog.vec.Vec3.createFloat32());
-
- goog.vec.Vec3.setFromValues(v, 1, 2, 3);
- assertElementsEquals([1, 2, 3], v);
-
- var w = goog.vec.Vec3.createFloat64();
- assertElementsEquals(0, w[0]);
- assertEquals(0, w[1]);
- assertEquals(0, w[2]);
-
- assertElementsEquals([0, 0, 0], goog.vec.Vec3.createFloat64());
-
- goog.vec.Vec3.setFromValues(w, 1, 2, 3);
- assertElementsEquals([1, 2, 3], w);
- }
-
-
- function testSet() {
- var v = goog.vec.Vec3.createFloat32();
- goog.vec.Vec3.setFromValues(v, 1, 2, 3);
- assertElementsEquals([1, 2, 3], v);
-
- goog.vec.Vec3.setFromArray(v, [4, 5, 6]);
- assertElementsEquals([4, 5, 6], v);
-
- var w = goog.vec.Vec3.createFloat32();
- goog.vec.Vec3.setFromValues(w, 1, 2, 3);
- assertElementsEquals([1, 2, 3], w);
-
- goog.vec.Vec3.setFromArray(w, [4, 5, 6]);
- assertElementsEquals([4, 5, 6], w);
- }
-
- function testAdd() {
- var v0 = goog.vec.Vec3.createFloat32FromArray([1, 2, 3]);
- var v1 = goog.vec.Vec3.createFloat32FromArray([4, 5, 6]);
- var v2 = goog.vec.Vec3.cloneFloat32(v0);
-
- goog.vec.Vec3.add(v2, v1, v2);
- assertElementsEquals([1, 2, 3], v0);
- assertElementsEquals([4, 5, 6], v1);
- assertElementsEquals([5, 7, 9], v2);
-
- goog.vec.Vec3.add(goog.vec.Vec3.add(v0, v1, v2), v0, v2);
- assertElementsEquals([6, 9, 12], v2);
- }
-
- function testSubtract() {
- var v0 = goog.vec.Vec3.createFloat32FromArray([1, 2, 3]);
- var v1 = goog.vec.Vec3.createFloat32FromArray([4, 5, 6]);
- var v2 = goog.vec.Vec3.cloneFloat32(v0);
-
- goog.vec.Vec3.subtract(v2, v1, v2);
- assertElementsEquals([1, 2, 3], v0);
- assertElementsEquals([4, 5, 6], v1);
- assertElementsEquals([-3, -3, -3], v2);
-
- goog.vec.Vec3.setFromValues(v2, 0, 0, 0);
- goog.vec.Vec3.subtract(v1, v0, v2);
- assertElementsEquals([3, 3, 3], v2);
-
- v2 = goog.vec.Vec3.cloneFloat32(v0);
- goog.vec.Vec3.subtract(v2, v1, v2);
- assertElementsEquals([-3, -3, -3], v2);
-
- goog.vec.Vec3.subtract(goog.vec.Vec3.subtract(v1, v0, v2), v0, v2);
- assertElementsEquals([2, 1, 0], v2);
- }
-
- function testNegate() {
- var v0 = goog.vec.Vec3.createFloat32FromArray([1, 2, 3]);
- var v1 = goog.vec.Vec3.createFloat32();
-
- goog.vec.Vec3.negate(v0, v1);
- assertElementsEquals([-1, -2, -3], v1);
- assertElementsEquals([1, 2, 3], v0);
-
- goog.vec.Vec3.negate(v0, v0);
- assertElementsEquals([-1, -2, -3], v0);
- }
-
- function testScale() {
- var v0 = goog.vec.Vec3.createFloat32FromArray([1, 2, 3]);
- var v1 = goog.vec.Vec3.createFloat32();
-
- goog.vec.Vec3.scale(v0, 4, v1);
- assertElementsEquals([4, 8, 12], v1);
- assertElementsEquals([1, 2, 3], v0);
-
- goog.vec.Vec3.setFromArray(v1, v0);
- goog.vec.Vec3.scale(v1, 5, v1);
- assertElementsEquals([5, 10, 15], v1);
- }
-
- function testMagnitudeSquared() {
- var v0 = goog.vec.Vec3.createFloat32FromArray([1, 2, 3]);
- assertEquals(14, goog.vec.Vec3.magnitudeSquared(v0));
- }
-
- function testMagnitude() {
- var v0 = goog.vec.Vec3.createFloat32FromArray([1, 2, 3]);
- assertEquals(Math.sqrt(14), goog.vec.Vec3.magnitude(v0));
- }
-
- function testNormalize() {
- var v0 = goog.vec.Vec3.createFloat32FromArray([2, 3, 4]);
- var v1 = goog.vec.Vec3.create();
- var v2 = goog.vec.Vec3.create();
- goog.vec.Vec3.scale(
- v0, 1 / goog.vec.Vec3.magnitude(v0), v2);
-
- goog.vec.Vec3.normalize(v0, v1);
- assertElementsEquals(v2, v1);
- assertElementsEquals([2, 3, 4], v0);
-
- goog.vec.Vec3.setFromArray(v1, v0);
- goog.vec.Vec3.normalize(v1, v1);
- assertElementsEquals(v2, v1);
- }
-
- function testDot() {
- var v0 = goog.vec.Vec3.createFloat32FromArray([1, 2, 3]);
- var v1 = goog.vec.Vec3.createFloat32FromArray([4, 5, 6]);
- assertEquals(32, goog.vec.Vec3.dot(v0, v1));
- assertEquals(32, goog.vec.Vec3.dot(v1, v0));
- }
-
- function testCross() {
- var v0 = goog.vec.Vec3.createFloat32FromArray([1, 2, 3]);
- var v1 = goog.vec.Vec3.createFloat32FromArray([4, 5, 6]);
- var crossVec = goog.vec.Vec3.create();
-
- goog.vec.Vec3.cross(v0, v1, crossVec);
- assertElementsEquals([1, 2, 3], v0);
- assertElementsEquals([4, 5, 6], v1);
- assertElementsEquals([-3, 6, -3], crossVec);
-
- goog.vec.Vec3.setFromArray(crossVec, v1);
- goog.vec.Vec3.cross(crossVec, v0, crossVec);
- assertElementsEquals([1, 2, 3], v0);
- assertElementsEquals([4, 5, 6], v1);
- assertElementsEquals([3, -6, 3], crossVec);
-
- goog.vec.Vec3.cross(v0, v0, v0);
- assertElementsEquals([0, 0, 0], v0);
- }
-
- function testDistanceSquared() {
- var v0 = goog.vec.Vec3.createFloat32FromValues(1, 2, 3);
- var v1 = goog.vec.Vec3.createFloat32FromValues(1, 2, 3);
- assertEquals(0, goog.vec.Vec3.distanceSquared(v0, v1));
- goog.vec.Vec3.setFromValues(v0, 1, 2, 3);
- goog.vec.Vec3.setFromValues(v1, -1, -2, -1);
- assertEquals(36, goog.vec.Vec3.distanceSquared(v0, v1));
- }
-
- function testDistance() {
- var v0 = goog.vec.Vec3.createFloat32FromValues(1, 2, 3);
- var v1 = goog.vec.Vec3.createFloat32FromValues(1, 2, 3);
- assertEquals(0, goog.vec.Vec3.distance(v0, v1));
- goog.vec.Vec3.setFromValues(v0, 1, 2, 3);
- goog.vec.Vec3.setFromValues(v1, -1, -2, -1);
- assertEquals(6, goog.vec.Vec3.distance(v0, v1));
- }
-
- function testDirection() {
- var v0 = goog.vec.Vec3.createFloat32FromValues(1, 2, 3);
- var v1 = goog.vec.Vec3.createFloat32FromValues(1, 2, 3);
- var dirVec = goog.vec.Vec3.createFloat32FromValues(4, 5, 6);
- goog.vec.Vec3.direction(v0, v1, dirVec);
- assertElementsEquals([0, 0, 0], dirVec);
- goog.vec.Vec3.setFromValues(v0, 0, 0, 0);
- goog.vec.Vec3.setFromValues(v1, 1, 0, 0);
- goog.vec.Vec3.direction(v0, v1, dirVec);
- assertElementsEquals([1, 0, 0], dirVec);
- goog.vec.Vec3.setFromValues(v0, 1, 1, 1);
- goog.vec.Vec3.setFromValues(v1, 0, 0, 0);
- goog.vec.Vec3.direction(v0, v1, dirVec);
- assertElementsRoughlyEqual(
- [-0.5773502588272095, -0.5773502588272095, -0.5773502588272095],
- dirVec, goog.vec.EPSILON);
- }
-
- function testLerp() {
- var v0 = goog.vec.Vec3.createFloat32FromValues(1, 2, 3);
- var v1 = goog.vec.Vec3.createFloat32FromValues(10, 20, 30);
- var v2 = goog.vec.Vec3.cloneFloat32(v0);
-
- goog.vec.Vec3.lerp(v2, v1, 0, v2);
- assertElementsEquals([1, 2, 3], v2);
- goog.vec.Vec3.lerp(v2, v1, 1, v2);
- assertElementsEquals([10, 20, 30], v2);
- goog.vec.Vec3.lerp(v0, v1, .5, v2);
- assertElementsEquals([5.5, 11, 16.5], v2);
- }
-
- function testEquals() {
- var v0 = goog.vec.Vec3.createFloat32FromValues(1, 2, 3);
- var v1 = goog.vec.Vec3.cloneFloat32(v0);
- assertElementsEquals(v0, v1);
-
- v1[0] = 4;
- assertFalse(goog.vec.Vec3.equals(v0, v1));
-
- v1 = goog.vec.Vec3.cloneFloat32(v0);
- v1[1] = 4;
- assertFalse(goog.vec.Vec3.equals(v0, v1));
-
- v1 = goog.vec.Vec3.cloneFloat32(v0);
- v1[2] = 4;
- assertFalse(goog.vec.Vec3.equals(v0, v1));
- }
-
-</script>
-</body>