webgl-3d-viewer
Version:
A WebGL ThreeJS STL viewer implementation written in ES6
67 lines (47 loc) • 2.06 kB
JavaScript
/**
* @author alteredq / http://alteredqualia.com/
* @author mr.doob / http://mrdoob.com/
*/
;
var Detector = {
canvas: !!window.CanvasRenderingContext2D,
webgl: (function () {
try {
var canvas = document.createElement('canvas');return !!(window.WebGLRenderingContext && (canvas.getContext('webgl') || canvas.getContext('experimental-webgl')));
} catch (e) {
return false;
}
})(),
workers: !!window.Worker,
fileapi: window.File && window.FileReader && window.FileList && window.Blob,
getWebGLErrorMessage: function getWebGLErrorMessage() {
var element = document.createElement('div');
element.id = 'webgl-error-message';
element.style.fontFamily = 'monospace';
element.style.fontSize = '13px';
element.style.fontWeight = 'normal';
element.style.textAlign = 'center';
element.style.background = '#fff';
element.style.color = '#000';
element.style.padding = '1.5em';
element.style.width = '400px';
element.style.margin = '5em auto 0';
if (!this.webgl) {
element.innerHTML = window.WebGLRenderingContext ? ['Your graphics card does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">WebGL</a>.<br />', 'Find out how to get it <a href="http://get.webgl.org/" style="color:#000">here</a>.'].join('\n') : ['Your browser does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">WebGL</a>.<br/>', 'Find out how to get it <a href="http://get.webgl.org/" style="color:#000">here</a>.'].join('\n');
}
return element;
},
addGetWebGLMessage: function addGetWebGLMessage(parameters) {
var parent, id, element;
parameters = parameters || {};
parent = parameters.parent !== undefined ? parameters.parent : document.body;
id = parameters.id !== undefined ? parameters.id : 'oldie';
element = Detector.getWebGLErrorMessage();
element.id = id;
parent.appendChild(element);
}
};
// browserify support
if (typeof module === 'object') {
module.exports = Detector;
}