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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.Vec4</title>
<script src="../base.js"></script>
<script>
goog.require('goog.vec.Float32Array');
goog.require('goog.vec.Vec4');
goog.require('goog.testing.jsunit');
</script>
</head>
<body>
<script>
function testDeprecatedConstructor() {
assertElementsEquals([0, 0, 0, 0], goog.vec.Vec4.create());
assertElementsEquals([1, 2, 3, 4],
goog.vec.Vec4.createFromValues(1, 2, 3, 4));
assertElementsEquals([1, 2, 3, 4],
goog.vec.Vec4.createFromArray([1, 2, 3, 4]));
var v = goog.vec.Vec4.createFromValues(1, 2, 3, 4);
assertElementsEquals([1, 2, 3, 4], goog.vec.Vec4.clone(v));
}
function testConstructor() {
assertElementsEquals([0, 0, 0, 0], goog.vec.Vec4.createFloat32());
assertElementsEquals([1, 2, 3, 4],
goog.vec.Vec4.createFloat32FromValues(1, 2, 3, 4));
assertElementsEquals([1, 2, 3, 4],
goog.vec.Vec4.createFloat32FromArray([1, 2, 3, 4]));
var v = goog.vec.Vec4.createFloat32FromValues(1, 2, 3, 4);
assertElementsEquals([1, 2, 3, 4], goog.vec.Vec4.cloneFloat32(v));
assertElementsEquals([0, 0, 0, 0], goog.vec.Vec4.createFloat64());
assertElementsEquals([1, 2, 3, 4],
goog.vec.Vec4.createFloat64FromValues(1, 2, 3, 4));
assertElementsEquals([1, 2, 3, 4],
goog.vec.Vec4.createFloat64FromArray([1, 2, 3, 4]));
var w = goog.vec.Vec4.createFloat64FromValues(1, 2, 3, 4);
assertElementsEquals([1, 2, 3, 4], goog.vec.Vec4.cloneFloat64(w));
}
function testSet() {
var v = goog.vec.Vec4.createFloat32();
goog.vec.Vec4.setFromValues(v, 1, 2, 3, 4);
assertElementsEquals([1, 2, 3, 4], v);
goog.vec.Vec4.setFromArray(v, [4, 5, 6, 7]);
assertElementsEquals([4, 5, 6, 7], v);
}
function testAdd() {
var v0 = goog.vec.Vec4.createFloat32FromArray([1, 2, 3, 4]);
var v1 = goog.vec.Vec4.createFloat32FromArray([5, 6, 7, 8]);
var v2 = goog.vec.Vec4.cloneFloat32(v0);
goog.vec.Vec4.add(v2, v1, v2);
assertElementsEquals([1, 2, 3, 4], v0);
assertElementsEquals([5, 6, 7, 8], v1);
assertElementsEquals([6, 8, 10, 12], v2);
goog.vec.Vec4.add(goog.vec.Vec4.add(v0, v1, v2), v0, v2);
assertElementsEquals([7, 10, 13, 16], v2);
}
function testSubtract() {
var v0 = goog.vec.Vec4.createFloat32FromArray([4, 3, 2, 1]);
var v1 = goog.vec.Vec4.createFloat32FromArray([5, 6, 7, 8]);
var v2 = goog.vec.Vec4.cloneFloat32(v0);
goog.vec.Vec4.subtract(v2, v1, v2);
assertElementsEquals([4, 3, 2, 1], v0);
assertElementsEquals([5, 6, 7, 8], v1);
assertElementsEquals([-1, -3, -5, -7], v2);
goog.vec.Vec4.setFromValues(v2, 0, 0, 0, 0);
goog.vec.Vec4.subtract(v1, v0, v2);
assertElementsEquals([1, 3, 5, 7], v2);
goog.vec.Vec4.subtract(goog.vec.Vec4.subtract(v1, v0, v2), v0, v2);
assertElementsEquals([-3, 0, 3, 6], v2);
}
function testNegate() {
var v0 = goog.vec.Vec4.createFloat32FromArray([1, 2, 3, 4]);
var v1 = goog.vec.Vec4.createFloat32();
goog.vec.Vec4.negate(v0, v1);
assertElementsEquals([-1, -2, -3, -4], v1);
assertElementsEquals([1, 2, 3, 4], v0);
goog.vec.Vec4.negate(v0, v0);
assertElementsEquals([-1, -2, -3, -4], v0);
}
function testScale() {
var v0 = goog.vec.Vec4.createFloat32FromArray([1, 2, 3, 4]);
var v1 = goog.vec.Vec4.createFloat32();
goog.vec.Vec4.scale(v0, 4, v1);
assertElementsEquals([4, 8, 12, 16], v1);
assertElementsEquals([1, 2, 3, 4], v0);
goog.vec.Vec4.setFromArray(v1, v0);
goog.vec.Vec4.scale(v1, 5, v1);
assertElementsEquals([5, 10, 15, 20], v1);
}
function testMagnitudeSquared() {
var v0 = goog.vec.Vec4.createFloat32FromArray([1, 2, 3, 4]);
assertEquals(30, goog.vec.Vec4.magnitudeSquared(v0));
}
function testMagnitude() {
var v0 = goog.vec.Vec4.createFloat32FromArray([1, 2, 3, 4]);
assertEquals(Math.sqrt(30), goog.vec.Vec4.magnitude(v0));
}
function testNormalize() {
var v0 = goog.vec.Vec4.createFloat32FromArray([2, 3, 4, 5]);
var v1 = goog.vec.Vec4.createFloat32();
var v2 = goog.vec.Vec4.createFloat32();
goog.vec.Vec4.scale(v0, 1 / goog.vec.Vec4.magnitude(v0), v2);
goog.vec.Vec4.normalize(v0, v1);
assertElementsEquals(v2, v1);
assertElementsEquals([2, 3, 4, 5], v0);
goog.vec.Vec4.setFromArray(v1, v0);
goog.vec.Vec4.normalize(v1, v1);
assertElementsEquals(v2, v1);
}
function testDot() {
var v0 = goog.vec.Vec4.createFloat32FromArray([1, 2, 3, 4]);
var v1 = goog.vec.Vec4.createFloat32FromArray([5, 6, 7, 8]);
assertEquals(70, goog.vec.Vec4.dot(v0, v1));
assertEquals(70, goog.vec.Vec4.dot(v1, v0));
}
function testLerp() {
var v0 = goog.vec.Vec4.createFloat32FromValues(1, 2, 3, 4);
var v1 = goog.vec.Vec4.createFloat32FromValues(10, 20, 30, 40);
var v2 = goog.vec.Vec4.cloneFloat32(v0);
goog.vec.Vec4.lerp(v2, v1, 0, v2);
assertElementsEquals([1, 2, 3, 4], v2);
goog.vec.Vec4.lerp(v2, v1, 1, v2);
assertElementsEquals([10, 20, 30, 40], v2);
goog.vec.Vec4.lerp(v0, v1, .5, v2);
assertElementsEquals([5.5, 11, 16.5, 22], v2);
}
function testEquals() {
var v0 = goog.vec.Vec4.createFloat32FromValues(1, 2, 3, 4);
var v1 = goog.vec.Vec4.cloneFloat32(v0);
assertElementsEquals(v0, v1);
v1[0] = 5;
assertFalse(goog.vec.Vec4.equals(v0, v1));
v1 = goog.vec.Vec4.cloneFloat32(v0);
v1[1] = 5;
assertFalse(goog.vec.Vec4.equals(v0, v1));
v1 = goog.vec.Vec4.cloneFloat32(v0);
v1[2] = 5;
assertFalse(goog.vec.Vec4.equals(v0, v1));
v1 = goog.vec.Vec4.cloneFloat32(v0);
v1[3] = 5;
assertFalse(goog.vec.Vec4.equals(v0, v1));
}
</script>
</body>
|
