canvas_geometry_cube.html 4.8 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js canvas - 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. font-family: Monospace;
  10. background-color: #f0f0f0;
  11. margin: 0px;
  12. overflow: hidden;
  13. }
  14. </style>
  15. </head>
  16. <body>
  17. <script src="../build/three.min.js"></script>
  18. <script src="js/Stats.js"></script>
  19. <script>
  20. var container, stats;
  21. var camera, scene, renderer;
  22. var cube, plane;
  23. var targetRotation = 0;
  24. var targetRotationOnMouseDown = 0;
  25. var mouseX = 0;
  26. var mouseXOnMouseDown = 0;
  27. var windowHalfX = window.innerWidth / 2;
  28. var windowHalfY = window.innerHeight / 2;
  29. init();
  30. animate();
  31. function init() {
  32. container = document.createElement( 'div' );
  33. document.body.appendChild( container );
  34. var info = document.createElement( 'div' );
  35. info.style.position = 'absolute';
  36. info.style.top = '10px';
  37. info.style.width = '100%';
  38. info.style.textAlign = 'center';
  39. info.innerHTML = 'Drag to spin the cube';
  40. container.appendChild( info );
  41. camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
  42. camera.position.y = 150;
  43. camera.position.z = 500;
  44. scene = new THREE.Scene();
  45. // Cube
  46. var geometry = new THREE.CubeGeometry( 200, 200, 200 );
  47. for ( var i = 0; i < geometry.faces.length; i ++ ) {
  48. geometry.faces[ i ].color.setHex( Math.random() * 0xffffff );
  49. }
  50. var material = new THREE.MeshBasicMaterial( { vertexColors: THREE.FaceColors } );
  51. cube = new THREE.Mesh( geometry, material );
  52. cube.position.y = 150;
  53. scene.add( cube );
  54. // Plane
  55. var geometry = new THREE.PlaneGeometry( 200, 200 );
  56. geometry.applyMatrix( new THREE.Matrix4().makeRotationX( - Math.PI / 2 ) );
  57. var material = new THREE.MeshBasicMaterial( { color: 0xe0e0e0 } );
  58. plane = new THREE.Mesh( geometry, material );
  59. scene.add( plane );
  60. renderer = new THREE.CanvasRenderer();
  61. renderer.setSize( window.innerWidth, window.innerHeight );
  62. container.appendChild( renderer.domElement );
  63. stats = new Stats();
  64. stats.domElement.style.position = 'absolute';
  65. stats.domElement.style.top = '0px';
  66. container.appendChild( stats.domElement );
  67. document.addEventListener( 'mousedown', onDocumentMouseDown, false );
  68. document.addEventListener( 'touchstart', onDocumentTouchStart, false );
  69. document.addEventListener( 'touchmove', onDocumentTouchMove, false );
  70. //
  71. window.addEventListener( 'resize', onWindowResize, false );
  72. }
  73. function onWindowResize() {
  74. windowHalfX = window.innerWidth / 2;
  75. windowHalfY = window.innerHeight / 2;
  76. camera.aspect = window.innerWidth / window.innerHeight;
  77. camera.updateProjectionMatrix();
  78. renderer.setSize( window.innerWidth, window.innerHeight );
  79. }
  80. //
  81. function onDocumentMouseDown( event ) {
  82. event.preventDefault();
  83. document.addEventListener( 'mousemove', onDocumentMouseMove, false );
  84. document.addEventListener( 'mouseup', onDocumentMouseUp, false );
  85. document.addEventListener( 'mouseout', onDocumentMouseOut, false );
  86. mouseXOnMouseDown = event.clientX - windowHalfX;
  87. targetRotationOnMouseDown = targetRotation;
  88. }
  89. function onDocumentMouseMove( event ) {
  90. mouseX = event.clientX - windowHalfX;
  91. targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
  92. }
  93. function onDocumentMouseUp( event ) {
  94. document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
  95. document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
  96. document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
  97. }
  98. function onDocumentMouseOut( event ) {
  99. document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
  100. document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
  101. document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
  102. }
  103. function onDocumentTouchStart( event ) {
  104. if ( event.touches.length === 1 ) {
  105. event.preventDefault();
  106. mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
  107. targetRotationOnMouseDown = targetRotation;
  108. }
  109. }
  110. function onDocumentTouchMove( event ) {
  111. if ( event.touches.length === 1 ) {
  112. event.preventDefault();
  113. mouseX = event.touches[ 0 ].pageX - windowHalfX;
  114. targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;
  115. }
  116. }
  117. //
  118. function animate() {
  119. requestAnimationFrame( animate );
  120. render();
  121. stats.update();
  122. }
  123. function render() {
  124. plane.rotation.y = cube.rotation.y += ( targetRotation - cube.rotation.y ) * 0.05;
  125. renderer.render( scene, camera );
  126. }
  127. </script>
  128. </body>
  129. </html>