webgl_postprocessing.html 3.0 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js webgl - postprocessing</title>
  5. <meta charset="utf-8">
  6. <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
  7. <style>
  8. body {
  9. margin: 0px;
  10. background-color: #000000;
  11. overflow: hidden;
  12. }
  13. </style>
  14. </head>
  15. <body>
  16. <script src="../build/three.js"></script>
  17. <script src="js/shaders/CopyShader.js"></script>
  18. <script src="js/shaders/DotScreenShader.js"></script>
  19. <script src="js/shaders/RGBShiftShader.js"></script>
  20. <script src="js/postprocessing/EffectComposer.js"></script>
  21. <script src="js/postprocessing/RenderPass.js"></script>
  22. <script src="js/postprocessing/ShaderPass.js"></script>
  23. <script>
  24. var camera, scene, renderer, composer;
  25. var object, light;
  26. init();
  27. animate();
  28. function init() {
  29. renderer = new THREE.WebGLRenderer();
  30. renderer.setPixelRatio( window.devicePixelRatio );
  31. renderer.setSize( window.innerWidth, window.innerHeight );
  32. document.body.appendChild( renderer.domElement );
  33. //
  34. camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
  35. camera.position.z = 400;
  36. scene = new THREE.Scene();
  37. scene.fog = new THREE.Fog( 0x000000, 1, 1000 );
  38. object = new THREE.Object3D();
  39. scene.add( object );
  40. var geometry = new THREE.SphereGeometry( 1, 4, 4 );
  41. var material = new THREE.MeshPhongMaterial( { color: 0xffffff, shading: THREE.FlatShading } );
  42. for ( var i = 0; i < 100; i ++ ) {
  43. var mesh = new THREE.Mesh( geometry, material );
  44. mesh.position.set( Math.random() - 0.5, Math.random() - 0.5, Math.random() - 0.5 ).normalize();
  45. mesh.position.multiplyScalar( Math.random() * 400 );
  46. mesh.rotation.set( Math.random() * 2, Math.random() * 2, Math.random() * 2 );
  47. mesh.scale.x = mesh.scale.y = mesh.scale.z = Math.random() * 50;
  48. object.add( mesh );
  49. }
  50. scene.add( new THREE.AmbientLight( 0x222222 ) );
  51. light = new THREE.DirectionalLight( 0xffffff );
  52. light.position.set( 1, 1, 1 );
  53. scene.add( light );
  54. // postprocessing
  55. composer = new THREE.EffectComposer( renderer );
  56. composer.addPass( new THREE.RenderPass( scene, camera ) );
  57. var effect = new THREE.ShaderPass( THREE.DotScreenShader );
  58. effect.uniforms[ 'scale' ].value = 4;
  59. composer.addPass( effect );
  60. var effect = new THREE.ShaderPass( THREE.RGBShiftShader );
  61. effect.uniforms[ 'amount' ].value = 0.0015;
  62. effect.renderToScreen = true;
  63. composer.addPass( effect );
  64. //
  65. window.addEventListener( 'resize', onWindowResize, false );
  66. }
  67. function onWindowResize() {
  68. camera.aspect = window.innerWidth / window.innerHeight;
  69. camera.updateProjectionMatrix();
  70. renderer.setSize( window.innerWidth, window.innerHeight );
  71. composer.setSize( window.innerWidth, window.innerHeight );
  72. }
  73. function animate() {
  74. requestAnimationFrame( animate );
  75. object.rotation.x += 0.005;
  76. object.rotation.y += 0.01;
  77. composer.render();
  78. }
  79. </script>
  80. </body>
  81. </html>