webgl_performance_static.html 3.1 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js webgl - performance [static]</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. <style>
  9. body {
  10. background-color: #fff;
  11. }
  12. </style>
  13. </head>
  14. <body>
  15. <script type="module">
  16. import {
  17. BufferGeometryLoader,
  18. Color,
  19. Mesh,
  20. MeshNormalMaterial,
  21. PerspectiveCamera,
  22. Scene,
  23. WebGLRenderer
  24. } from "../build/three.module.js";
  25. import Stats from './jsm/libs/stats.module.js';
  26. var container, stats;
  27. var camera, scene, renderer;
  28. var mouseX = 0, mouseY = 0;
  29. var windowHalfX = window.innerWidth / 2;
  30. var windowHalfY = window.innerHeight / 2;
  31. document.addEventListener( 'mousemove', onDocumentMouseMove, false );
  32. init();
  33. animate();
  34. function init() {
  35. container = document.createElement( 'div' );
  36. document.body.appendChild( container );
  37. camera = new PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 10000 );
  38. camera.position.z = 3200;
  39. scene = new Scene();
  40. scene.background = new Color( 0xffffff );
  41. scene.matrixAutoUpdate = false;
  42. var material = new MeshNormalMaterial();
  43. var loader = new BufferGeometryLoader();
  44. loader.load( 'models/json/suzanne_buffergeometry.json', function ( geometry ) {
  45. geometry.computeVertexNormals();
  46. for ( var i = 0; i < 7700; i ++ ) {
  47. var mesh = new Mesh( geometry, material );
  48. mesh.position.x = Math.random() * 10000 - 5000;
  49. mesh.position.y = Math.random() * 10000 - 5000;
  50. mesh.position.z = Math.random() * 10000 - 5000;
  51. mesh.rotation.x = Math.random() * 2 * Math.PI;
  52. mesh.rotation.y = Math.random() * 2 * Math.PI;
  53. mesh.scale.x = mesh.scale.y = mesh.scale.z = Math.random() * 50 + 100;
  54. mesh.matrixAutoUpdate = false;
  55. mesh.updateMatrix();
  56. scene.add( mesh );
  57. }
  58. } );
  59. renderer = new WebGLRenderer();
  60. renderer.setPixelRatio( window.devicePixelRatio );
  61. renderer.setSize( window.innerWidth, window.innerHeight );
  62. //renderer.sortObjects = false;
  63. container.appendChild( renderer.domElement );
  64. stats = new Stats();
  65. container.appendChild( stats.dom );
  66. //
  67. window.addEventListener( 'resize', onWindowResize, false );
  68. }
  69. function onWindowResize() {
  70. windowHalfX = window.innerWidth / 2;
  71. windowHalfY = window.innerHeight / 2;
  72. camera.aspect = window.innerWidth / window.innerHeight;
  73. camera.updateProjectionMatrix();
  74. renderer.setSize( window.innerWidth, window.innerHeight );
  75. }
  76. function onDocumentMouseMove( event ) {
  77. mouseX = ( event.clientX - windowHalfX ) * 10;
  78. mouseY = ( event.clientY - windowHalfY ) * 10;
  79. }
  80. //
  81. function animate() {
  82. requestAnimationFrame( animate );
  83. render();
  84. stats.update();
  85. }
  86. function render() {
  87. camera.position.x += ( mouseX - camera.position.x ) * .05;
  88. camera.position.y += ( - mouseY - camera.position.y ) * .05;
  89. camera.lookAt( scene.position );
  90. renderer.render( scene, camera );
  91. }
  92. </script>
  93. </body>
  94. </html>