Fdage2.html 4.0 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js webgl - geometry - cube</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/controls/OrbitControls.js"></script>
  18. <script>
  19. var camera, scene, renderer,controls;
  20. var mesh;
  21. init();
  22. animate();
  23. function createMesh(){
  24. var material;
  25. var b = 1 / 256;
  26. var c = 0.5 / 256;
  27. var d = 2.8 * c;
  28. var e = 0.5 * c;
  29. var vertexs = new Float32Array([0, 1, 0, 0.49609375 + b, 0.49609375 + b, 1, 0, 0, 0.9921875 + b, 0.49609375 + b, 0, 0, 1, 0.49609375 + b, 0.9921875 + b, -1, 0, 0, 0 + b, 0.49609375 + b, 0, 0, -1, 0.49609375 + b, 0 + b, 0, -1, 0, 0.9921875 + b, 0 + b, 0, -1, 0, 0.9921875 + b, 0.9921875 + b, 0, -1, 0, 0 + b, 0.9921875 + b, 0, -1, 0, 0 + b, 0 + b, d, 1 - d, -d, 0.5 + c, 0.5 - c, d, 1 - d, d, 0.5 + c, 0.5 + c, -d, 1 - d, d, 0.5 - c, 0.5 + c, -d, 1 - d, -d, 0.5 - c, 0.5 - c, -d, 0, -1 + d, 0.5 - c, 0 + b + c, d, 0, -1 + d, 0.5 + c, 0 + b + c, 1 - d, 0, -d, 0.9921875 + b - c, 0.5 - c, 1 - d, 0, d, 0.9921875 + b - c, 0.5 + c, d, 0, 1 - d, 0.5 + c, 0.9921875 + b - c, -d, 0, 1 - d, 0.5 - c, 0.9921875 + b - c, -1 + d, 0, d, 0 + b + c, 0.5 + c, -1 + d, 0, -d, 0 + b + c, 0.5 - c, 1, 0, 0, 0.9921875 + b - e, 0.49609375 + b, 0, 0, 1, 0.49609375 + b, 0.9921875 + b - e, -1, 0, 0, 0 + b + e, 0.49609375 + b, 0, 0, -1, 0.49609375 + b, 0 + b + e, 0, 1, 0, 0.49609375 + b - e, 0.49609375 + b, 0, 1, 0, 0.49609375 + b, 0.49609375 + b - e, 0, 1, 0, 0.49609375 + b + e, 0.49609375 + b, 0, 1, 0, 0.49609375 + b, 0.49609375 + b + e]);
  30. var indexes = new Uint16Array([2, 1, 6, 3, 2, 7, 8, 4, 3, 4, 5, 1, 9, 14, 15, 17, 10, 16, 18, 19, 11, 20, 13, 12, 28, 12, 13, 13, 24, 28, 28, 24, 9, 9, 24, 14, 25, 9, 15, 25, 15, 21, 10, 25, 21, 10, 21, 16, 22, 26, 10, 22, 10, 17, 18, 11, 26, 22, 18, 26, 19, 23, 27, 19, 27, 11, 23, 20, 27, 27, 20, 12]);
  31. var geometry = new THREE.BufferGeometry();
  32. var vertexBuffer = new THREE.InterleavedBuffer(new Float32Array(vertexs),5);
  33. geometry.addAttribute( 'position', new THREE.InterleavedBufferAttribute( vertexBuffer, 3,0 ) );
  34. geometry.addAttribute( 'uv', new THREE.InterleavedBufferAttribute( vertexBuffer, 2 ,3) );
  35. geometry.setIndex(new THREE.Uint16BufferAttribute(new Uint16Array(indexes), 3))
  36. var mesh = new THREE.Mesh( geometry, new THREE.MeshBasicMaterial( { side:2 } ));
  37. return mesh;
  38. }
  39. function init() {
  40. camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, .1, 2000000 );
  41. camera.position.z = 4;
  42. scene = new THREE.Scene();
  43. /*
  44. var texture = new THREE.TextureLoader().load( 'textures/crate.gif' );
  45. var geometry = new THREE.BoxBufferGeometry( 200, 200, 200 );
  46. var material = new THREE.MeshBasicMaterial( { map: texture } );
  47. mesh = new THREE.Mesh( geometry, material );
  48. */
  49. mesh = createMesh();
  50. scene.add( mesh );
  51. renderer = new THREE.WebGLRenderer( { antialias: true } );
  52. renderer.setPixelRatio( window.devicePixelRatio );
  53. renderer.setSize( window.innerWidth, window.innerHeight );
  54. document.body.appendChild( renderer.domElement );
  55. //
  56. window.addEventListener( 'resize', onWindowResize, false );
  57. controls = new THREE.OrbitControls( camera, renderer.domElement );
  58. controls.target.set( 0, 0, 0 );
  59. controls.update();
  60. }
  61. function onWindowResize() {
  62. camera.aspect = window.innerWidth / window.innerHeight;
  63. camera.updateProjectionMatrix();
  64. renderer.setSize( window.innerWidth, window.innerHeight );
  65. }
  66. function animate() {
  67. requestAnimationFrame( animate );
  68. renderer.render( scene, camera );
  69. }
  70. </script>
  71. </body>
  72. </html>