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| <!-- |
| 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 testAbs() { |
| var v0 = goog.vec.Vec3.createFloat32FromValues(-1, -2, -3); |
| var v1 = goog.vec.Vec3.createFloat32(); |
| |
| goog.vec.Vec3.abs(v0, v1); |
| assertElementsEquals([1, 2, 3], v1); |
| assertElementsEquals([-1, -2, -3], v0); |
| |
| goog.vec.Vec3.abs(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 testMax() { |
| var v0 = goog.vec.Vec3.createFloat32FromValues(10, 20, 30); |
| var v1 = goog.vec.Vec3.createFloat32FromValues(5, 25, 35); |
| var v2 = goog.vec.Vec3.createFloat32(); |
| |
| goog.vec.Vec3.max(v0, v1, v2); |
| assertElementsEquals([10, 25, 35], v2); |
| goog.vec.Vec3.max(v1, v0, v1); |
| assertElementsEquals([10, 25, 35], v1); |
| goog.vec.Vec3.max(v2, 20, v2); |
| assertElementsEquals([20, 25, 35], v2); |
| } |
| |
| function testMin() { |
| var v0 = goog.vec.Vec3.createFloat32FromValues(10, 20, 30); |
| var v1 = goog.vec.Vec3.createFloat32FromValues(5, 25, 35); |
| var v2 = goog.vec.Vec3.createFloat32(); |
| |
| goog.vec.Vec3.min(v0, v1, v2); |
| assertElementsEquals([5, 20, 30], v2); |
| goog.vec.Vec3.min(v1, v0, v1); |
| assertElementsEquals([5, 20, 30], v1); |
| goog.vec.Vec3.min(v2, 20, v2); |
| assertElementsEquals([5, 20, 20], 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> |