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74 lines
2.7 KiB
74 lines
2.7 KiB
/*
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* Copyright 2012, Gregg Tavares.
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* 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
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* met:
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*
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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
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Gregg Tavares. nor the names of his
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* contributors may be used to endorse or promote products derived from
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* 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
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* 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
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* global define */
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(function(root, factory) { // eslint-disable-line
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if (typeof define === 'function' && define.amd) {
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// AMD. Register as an anonymous module.
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define([], function() {
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return factory.call(root);
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});
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} else {
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// Browser globals
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root.threejsUtils = factory.call(root);
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}
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}(this, function() {
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'use strict'; // eslint-disable-line
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/** @module threejs-utils */
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/**
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* Resize a canvas to match the size its displayed.
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* @param {HTMLCanvasElement} canvas The canvas to resize.
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* @param {number} [multiplier] amount to multiply by.
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* Pass in window.devicePixelRatio for native pixels.
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* @return {boolean} true if the canvas was resized.
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* @memberOf module:webgl-utils
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*/
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function resizeCanvasToDisplaySize(canvas, multiplier) {
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multiplier = multiplier || 1;
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const width = canvas.clientWidth * multiplier | 0;
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const height = canvas.clientHeight * multiplier | 0;
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if (canvas.width !== width || canvas.height !== height) {
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canvas.width = width;
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canvas.height = height;
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return true;
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}
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return false;
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}
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return {
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resizeCanvasToDisplaySize: resizeCanvasToDisplaySize,
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};
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}));
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