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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>
|
