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webgl_materials_shaders_fresnel.html 4.9 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js webgl - materials - shaders [Fresnel]</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. background:#000;
  10. padding:0;
  11. margin:0;
  12. font-weight: bold;
  13. overflow:hidden;
  14. }
  15. #info {
  16. position: absolute;
  17. top: 0px; width: 100%;
  18. color: #ffffff;
  19. padding: 5px;
  20. font-family:Monospace;
  21. font-size:13px;
  22. text-align:center;
  23. z-index:1000;
  24. }
  25. a { color: #ffffff; }
  26. #oldie a { color:#0b0 }
  27. </style>
  28. </head>
  29. <body>
  30. <div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - webgl cube Fresnel shader demo. texture by <a href="http://www.humus.name/index.php?page=Textures" target="_blank">Humus</a> </div>
  31. <script src="../build/three.min.js"></script>
  32. <script src="js/shaders/FresnelShader.js"></script>
  33. <script src="js/Detector.js"></script>
  34. <script>
  35. if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
  36. var container;
  37. var camera, scene, renderer;
  38. var cameraCube, sceneCube;
  39. var mesh, zmesh, lightMesh, geometry;
  40. var spheres = [];
  41. var directionalLight, pointLight;
  42. var mouseX = 0, mouseY = 0;
  43. var windowHalfX = window.innerWidth / 2;
  44. var windowHalfY = window.innerHeight / 2;
  45. document.addEventListener( 'mousemove', onDocumentMouseMove, false );
  46. init();
  47. animate();
  48. function init() {
  49. container = document.createElement( 'div' );
  50. document.body.appendChild( container );
  51. camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 100000 );
  52. camera.position.z = 3200;
  53. cameraCube = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 100000 );
  54. scene = new THREE.Scene();
  55. sceneCube = new THREE.Scene();
  56. var geometry = new THREE.SphereGeometry( 100, 32, 16 );
  57. var path = "textures/cube/Park2/";
  58. var format = '.jpg';
  59. var urls = [
  60. path + 'posx' + format, path + 'negx' + format,
  61. path + 'posy' + format, path + 'negy' + format,
  62. path + 'posz' + format, path + 'negz' + format
  63. ];
  64. var textureCube = THREE.ImageUtils.loadTextureCube( urls );
  65. textureCube.format = THREE.RGBFormat;
  66. var shader = THREE.FresnelShader;
  67. var uniforms = THREE.UniformsUtils.clone( shader.uniforms );
  68. uniforms[ "tCube" ].value = textureCube;
  69. var parameters = { fragmentShader: shader.fragmentShader, vertexShader: shader.vertexShader, uniforms: uniforms };
  70. var material = new THREE.ShaderMaterial( parameters );
  71. for ( var i = 0; i < 500; i ++ ) {
  72. var mesh = new THREE.Mesh( geometry, material );
  73. mesh.position.x = Math.random() * 10000 - 5000;
  74. mesh.position.y = Math.random() * 10000 - 5000;
  75. mesh.position.z = Math.random() * 10000 - 5000;
  76. mesh.scale.x = mesh.scale.y = mesh.scale.z = Math.random() * 3 + 1;
  77. scene.add( mesh );
  78. spheres.push( mesh );
  79. }
  80. scene.matrixAutoUpdate = false;
  81. // Skybox
  82. var shader = THREE.ShaderLib[ "cube" ];
  83. shader.uniforms[ "tCube" ].value = textureCube;
  84. var material = new THREE.ShaderMaterial( {
  85. fragmentShader: shader.fragmentShader,
  86. vertexShader: shader.vertexShader,
  87. uniforms: shader.uniforms,
  88. side: THREE.BackSide
  89. } ),
  90. mesh = new THREE.Mesh( new THREE.CubeGeometry( 100000, 100000, 100000 ), material );
  91. sceneCube.add( mesh );
  92. //
  93. renderer = new THREE.WebGLRenderer( { antialias: false } );
  94. renderer.setSize( window.innerWidth, window.innerHeight );
  95. renderer.autoClear = false;
  96. container.appendChild( renderer.domElement );
  97. //
  98. window.addEventListener( 'resize', onWindowResize, false );
  99. }
  100. function onWindowResize() {
  101. windowHalfX = window.innerWidth / 2;
  102. windowHalfY = window.innerHeight / 2;
  103. camera.aspect = window.innerWidth / window.innerHeight;
  104. camera.updateProjectionMatrix();
  105. cameraCube.aspect = window.innerWidth / window.innerHeight;
  106. cameraCube.updateProjectionMatrix();
  107. renderer.setSize( window.innerWidth, window.innerHeight );
  108. }
  109. function onDocumentMouseMove( event ) {
  110. mouseX = ( event.clientX - windowHalfX ) * 10;
  111. mouseY = ( event.clientY - windowHalfY ) * 10;
  112. }
  113. //
  114. function animate() {
  115. requestAnimationFrame( animate );
  116. render();
  117. }
  118. function render() {
  119. var timer = 0.0001 * Date.now();
  120. camera.position.x += ( mouseX - camera.position.x ) * .05;
  121. camera.position.y += ( - mouseY - camera.position.y ) * .05;
  122. camera.lookAt( scene.position );
  123. cameraCube.rotation.copy( camera.rotation );
  124. for ( var i = 0, il = spheres.length; i < il; i ++ ) {
  125. var sphere = spheres[ i ];
  126. sphere.position.x = 5000 * Math.cos( timer + i );
  127. sphere.position.y = 5000 * Math.sin( timer + i * 1.1 );
  128. }
  129. renderer.clear();
  130. renderer.render( sceneCube, cameraCube );
  131. renderer.render( scene, camera );
  132. }
  133. </script>
  134. </body>
  135. </html>