40 lines
889 B
JavaScript
40 lines
889 B
JavaScript
/**
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* Common classes.
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*/
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goog.provide('ascii.Vector');
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/**
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* @constructor
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*/
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ascii.Vector = function(x, y) {
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/** type {Number} */ this.x = x;
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/** type {Number} */ this.y = y;
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};
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/** @return {boolean} */
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ascii.Vector.prototype.equals = function(other) {
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return (this.x == other.x)
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&& (this.y == other.y);
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};
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/** @return {ascii.Vector} */
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ascii.Vector.prototype.subtract = function(other) {
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return new ascii.Vector(this.x - other.x, this.y - other.y);
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};
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/** @return {ascii.Vector} */
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ascii.Vector.prototype.add = function(other) {
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return new ascii.Vector(this.x + other.x, this.y + other.y);
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};
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/** @return {number} */
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ascii.Vector.prototype.length = function() {
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return Math.sqrt(this.x * this.x + this.y * this.y);
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};
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/** @return {ascii.Vector} */
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ascii.Vector.prototype.scale = function(scale) {
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return new ascii.Vector(this.x * scale, this.y * scale);
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};
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