topical media & game development

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mobile-query-three-vendor-threex-examples-threex.domevent-vendor-three.js-Detector.js / js



  

author: alteredq / alteredqualia.com/
author: mr.doob / mrdoob.com/

  
  
  Detector = {
  
          canvas : !! window.CanvasRenderingContext2D,
          webgl : ( function () { try { return !! window.WebGLRenderingContext && !! document.createElement( 'canvas' ).getContext( 'experimental-webgl' ); } catch( e ) { return false; } } )(),
          workers : !! window.Worker,
          fileapi : window.File && window.FileReader && window.FileList && window.Blob,
  
          getWebGLErrorMessage : function () {
  
                  var domElement = document.createElement( 'div' );
  
                  domElement.style.fontFamily = 'monospace';
                  domElement.style.fontSize = '13px';
                  domElement.style.textAlign = 'center';
                  domElement.style.background = '#eee';
                  domElement.style.color = '#000';
                  domElement.style.padding = '1em';
                  domElement.style.width = '475px';
                  domElement.style.margin = '5em auto 0';
  
                  if ( ! this.webgl ) {
  
                          domElement.innerHTML = window.WebGLRenderingContext ? [
                                  'Your graphics card does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation">WebGL</a>.<br />',
                                  'Find out how to get it <a href="http://get.webgl.org/">here</a>.'
                          ].join( '\n' ) : [
                                  'Your browser does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation">WebGL</a>.<br/>',
                                  'Find out how to get it <a href="http://get.webgl.org/">here</a>.'
                          ].join( '\n' );
  
                  }
  
                  return domElement;
  
          },
  
          addGetWebGLMessage : function ( parameters ) {
  
                  var parent, id, domElement;
  
                  parameters = parameters || {};
  
                  parent = parameters.parent !== undefined ? parameters.parent : document.body;
                  id = parameters.id !== undefined ? parameters.id : 'oldie';
  
                  domElement = Detector.getWebGLErrorMessage();
                  domElement.id = id;
  
                  parent.appendChild( domElement );
  
          }
  
  };
  


(C) Æliens 04/09/2009

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