71 lines
2.6 KiB
JavaScript
71 lines
2.6 KiB
JavaScript
// Copyright (c) 2001-2010, Purdue University. All rights reserved.
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// Copyright (C) 2015 Apple Inc. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the Purdue University nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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function Vector3D(x, y, z) {
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this.x = x;
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this.y = y;
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this.z = z;
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}
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Vector3D.prototype.plus = function(other) {
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return new Vector3D(this.x + other.x,
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this.y + other.y,
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this.z + other.z);
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};
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Vector3D.prototype.minus = function(other) {
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return new Vector3D(this.x - other.x,
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this.y - other.y,
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this.z - other.z);
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};
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Vector3D.prototype.dot = function(other) {
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return this.x * other.x + this.y * other.y + this.z * other.z;
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};
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Vector3D.prototype.squaredMagnitude = function() {
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return this.dot(this);
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};
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Vector3D.prototype.magnitude = function() {
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return Math.sqrt(this.squaredMagnitude());
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};
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Vector3D.prototype.times = function(amount) {
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return new Vector3D(this.x * amount,
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this.y * amount,
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this.z * amount);
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};
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Vector3D.prototype.as2D = function() {
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return new Vector2D(this.x, this.y);
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};
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Vector3D.prototype.toString = function() {
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return "[" + this.x + ", " + this.y + ", " + this.z + "]";
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};
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