webgl_performance_doublesided.html 3.9 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js webgl - performance</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. <link type="text/css" rel="stylesheet" href="main.css">
  8. </head>
  9. <body>
  10. <script type="module">
  11. import * as THREE from '../build/three.module.js';
  12. import Stats from './jsm/libs/stats.module.js';
  13. var container, stats;
  14. var camera, scene, renderer;
  15. var mouseX = 0, mouseY = 0;
  16. var SCREEN_WIDTH = window.innerWidth,
  17. SCREEN_HEIGHT = window.innerHeight;
  18. var windowHalfX = SCREEN_WIDTH / 2;
  19. var windowHalfY = SCREEN_HEIGHT / 2;
  20. init();
  21. animate();
  22. function init() {
  23. container = document.createElement( 'div' );
  24. document.body.appendChild( container );
  25. camera = new THREE.PerspectiveCamera( 50, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 20000 );
  26. camera.position.z = 3200;
  27. scene = new THREE.Scene();
  28. scene.background = new THREE.Color( 0x050505 );
  29. scene.add( new THREE.AmbientLight( 0x050505 ) );
  30. var light = new THREE.PointLight( 0x0011ff, 1, 5500 );
  31. light.position.set( 4000, 0, 0 );
  32. scene.add( light );
  33. var light = new THREE.PointLight( 0xff1100, 1, 5500 );
  34. light.position.set( - 4000, 0, 0 );
  35. scene.add( light );
  36. var light = new THREE.PointLight( 0xffaa00, 2, 3000 );
  37. light.position.set( 0, 0, 0 );
  38. scene.add( light );
  39. var path = "textures/cube/SwedishRoyalCastle/";
  40. var format = '.jpg';
  41. var urls = [
  42. path + 'px' + format, path + 'nx' + format,
  43. path + 'py' + format, path + 'ny' + format,
  44. path + 'pz' + format, path + 'nz' + format
  45. ];
  46. var reflectionCube = new THREE.CubeTextureLoader().load( urls );
  47. reflectionCube.format = THREE.RGBFormat;
  48. reflectionCube.encoding = THREE.sRGBEncoding;
  49. var material = new THREE.MeshPhongMaterial( { specular: 0x101010, shininess: 100, envMap: reflectionCube, combine: THREE.MixOperation, reflectivity: 0.1, side: THREE.DoubleSide } );
  50. var geometry = new THREE.SphereBufferGeometry( 1, 32, 16, 0, Math.PI );
  51. for ( var i = 0; i < 5000; i ++ ) {
  52. var mesh = new THREE.Mesh( geometry, material );
  53. mesh.position.x = Math.random() * 10000 - 5000;
  54. mesh.position.y = Math.random() * 10000 - 5000;
  55. mesh.position.z = Math.random() * 10000 - 5000;
  56. mesh.rotation.x = Math.random() * 2 * Math.PI;
  57. mesh.rotation.y = Math.random() * 2 * Math.PI;
  58. mesh.scale.x = mesh.scale.y = mesh.scale.z = Math.random() * 50 + 100;
  59. mesh.matrixAutoUpdate = false;
  60. mesh.updateMatrix();
  61. scene.add( mesh );
  62. }
  63. renderer = new THREE.WebGLRenderer( { antialias: true } );
  64. renderer.setPixelRatio( window.devicePixelRatio );
  65. renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
  66. renderer.outputEncoding = THREE.sRGBEncoding;
  67. container.appendChild( renderer.domElement );
  68. stats = new Stats();
  69. container.appendChild( stats.dom );
  70. document.addEventListener( 'mousemove', onDocumentMouseMove, false );
  71. window.addEventListener( 'resize', onWindowResize, false );
  72. }
  73. //
  74. function onWindowResize() {
  75. SCREEN_WIDTH = window.innerWidth;
  76. SCREEN_HEIGHT = window.innerHeight;
  77. renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
  78. camera.aspect = SCREEN_WIDTH / SCREEN_HEIGHT;
  79. camera.updateProjectionMatrix();
  80. windowHalfX = SCREEN_WIDTH / 2;
  81. windowHalfY = SCREEN_HEIGHT / 2;
  82. }
  83. function onDocumentMouseMove( event ) {
  84. mouseX = ( event.clientX - windowHalfX ) * 10;
  85. mouseY = ( event.clientY - windowHalfY ) * 10;
  86. }
  87. //
  88. function animate() {
  89. requestAnimationFrame( animate );
  90. render();
  91. stats.update();
  92. }
  93. function render() {
  94. camera.position.x += ( mouseX - camera.position.x ) * .05;
  95. camera.position.y += ( - mouseY - camera.position.y ) * .05;
  96. camera.lookAt( scene.position );
  97. renderer.render( scene, camera );
  98. }
  99. </script>
  100. </body>
  101. </html>