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Our files are up to a decade old, and have churned so much, that the initial author of the file no longer has much meaning. Furthermore, this will encourage developers to post to the developer group, rather than emailing Googlers (usually me) directly.
72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
/**
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* @license
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* Copyright 2019 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview Utility methods for rectangle manipulation.
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* These methods are not specific to Blockly, and could be factored out into
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* a JavaScript framework such as Closure.
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*/
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'use strict';
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/**
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* Utility methods for rectangle manipulation.
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* These methods are not specific to Blockly, and could be factored out into
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* a JavaScript framework such as Closure.
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* @class
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*/
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goog.module('Blockly.utils.Rect');
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/**
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* Class for representing rectangular regions.
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* @param {number} top Top.
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* @param {number} bottom Bottom.
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* @param {number} left Left.
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* @param {number} right Right.
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* @struct
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* @constructor
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* @alias Blockly.utils.Rect
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*/
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const Rect = function(top, bottom, left, right) {
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/** @type {number} */
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this.top = top;
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/** @type {number} */
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this.bottom = bottom;
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/** @type {number} */
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this.left = left;
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/** @type {number} */
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this.right = right;
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};
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/**
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* Tests whether this rectangle contains a x/y coordinate.
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*
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* @param {number} x The x coordinate to test for containment.
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* @param {number} y The y coordinate to test for containment.
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* @return {boolean} Whether this rectangle contains given coordinate.
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*/
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Rect.prototype.contains = function(x, y) {
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return x >= this.left && x <= this.right && y >= this.top && y <= this.bottom;
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};
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/**
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* Tests whether this rectangle intersects the provided rectangle.
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* Assumes that the coordinate system increases going down and left.
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* @param {!Blockly.utils.Rect} other The other rectangle to check for
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* intersection with.
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* @return {boolean} Whether this rectangle intersects the provided rectangle.
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*/
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Rect.prototype.intersects = function(other) {
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return !(
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this.left > other.right || this.right < other.left ||
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this.top > other.bottom || this.bottom < other.top);
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};
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exports = Rect;
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