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canvas_geometry_text.html 5.2 KB

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  1. <!DOCTYPE HTML>
  2. <html lang="en">
  3. <head>
  4. <title>three.js canvas/webgl - geometry - text</title>
  5. <meta charset="utf-8">
  6. <meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"/>
  7. <style type="text/css">
  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 type="text/javascript" src="../build/Three.js"></script>
  18. <script type="text/javascript" src="js/RequestAnimationFrame.js"></script>
  19. <script type="text/javascript" src="js/Stats.js"></script>
  20. <!-- load the font file from canvas-text -->
  21. <script type="text/javascript" src="fonts/helvetiker_regular.typeface.js"></script>
  22. <script type="text/javascript">
  23. var container, stats;
  24. var camera, scene, renderer;
  25. var text, plane;
  26. var targetRotation = 0;
  27. var targetRotationOnMouseDown = 0;
  28. var mouseX = 0;
  29. var mouseXOnMouseDown = 0;
  30. var windowHalfX = window.innerWidth / 2;
  31. var windowHalfY = window.innerHeight / 2;
  32. init();
  33. animate();
  34. function init() {
  35. container = document.createElement( 'div' );
  36. document.body.appendChild( container );
  37. var info = document.createElement( 'div' );
  38. info.style.position = 'absolute';
  39. info.style.top = '10px';
  40. info.style.width = '100%';
  41. info.style.textAlign = 'center';
  42. info.innerHTML = 'Simple Dynamic 3D Text Example by <a href="http://www.lab4games.net/zz85/blog">zz85</a><br/>Drag to spin the text';
  43. container.appendChild( info );
  44. camera = new THREE.Camera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
  45. camera.position.y = 150;
  46. camera.position.z = 500;
  47. camera.target.position.y = 150;
  48. scene = new THREE.Scene();
  49. // Get text from hash
  50. var theText = "Hello three.js! :)";
  51. var hash = document.location.hash.substr( 1 );
  52. if ( hash.length !== 0 ) {
  53. theText = hash;
  54. }
  55. var text3d = new THREE.TextGeometry( theText, {
  56. size: 80,
  57. height: 20,
  58. curveSegments: 2,
  59. font: "helvetiker"
  60. });
  61. text3d.computeBoundingBox();
  62. var centerOffset = -0.5 * ( text3d.boundingBox.x[ 1 ] - text3d.boundingBox.x[ 0 ] );
  63. var textMaterial = new THREE.MeshBasicMaterial( { color: Math.random() * 0xffffff, wireframe: false } );
  64. text = new THREE.Mesh( text3d, textMaterial );
  65. text.doubleSided = false;
  66. text.position.x = centerOffset;
  67. text.position.y = 100;
  68. text.position.z = 0;
  69. text.rotation.x = 0;
  70. text.rotation.y = Math.PI * 2;
  71. text.overdraw = true;
  72. parent = new THREE.Object3D();
  73. parent.add( text );
  74. scene.add( parent );
  75. renderer = new THREE.CanvasRenderer();
  76. renderer.setSize( window.innerWidth, window.innerHeight );
  77. container.appendChild( renderer.domElement );
  78. stats = new Stats();
  79. stats.domElement.style.position = 'absolute';
  80. stats.domElement.style.top = '0px';
  81. container.appendChild( stats.domElement );
  82. document.addEventListener( 'mousedown', onDocumentMouseDown, false );
  83. document.addEventListener( 'touchstart', onDocumentTouchStart, false );
  84. document.addEventListener( 'touchmove', onDocumentTouchMove, false );
  85. }
  86. //
  87. function onDocumentMouseDown( event ) {
  88. event.preventDefault();
  89. document.addEventListener( 'mousemove', onDocumentMouseMove, false );
  90. document.addEventListener( 'mouseup', onDocumentMouseUp, false );
  91. document.addEventListener( 'mouseout', onDocumentMouseOut, false );
  92. mouseXOnMouseDown = event.clientX - windowHalfX;
  93. targetRotationOnMouseDown = targetRotation;
  94. }
  95. function onDocumentMouseMove( event ) {
  96. mouseX = event.clientX - windowHalfX;
  97. targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
  98. }
  99. function onDocumentMouseUp( event ) {
  100. document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
  101. document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
  102. document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
  103. }
  104. function onDocumentMouseOut( event ) {
  105. document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
  106. document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
  107. document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
  108. }
  109. function onDocumentTouchStart( event ) {
  110. if ( event.touches.length == 1 ) {
  111. event.preventDefault();
  112. mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
  113. targetRotationOnMouseDown = targetRotation;
  114. }
  115. }
  116. function onDocumentTouchMove( event ) {
  117. if ( event.touches.length == 1 ) {
  118. event.preventDefault();
  119. mouseX = event.touches[ 0 ].pageX - windowHalfX;
  120. targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;
  121. }
  122. }
  123. //
  124. function animate() {
  125. requestAnimationFrame( animate );
  126. render();
  127. stats.update();
  128. }
  129. function render() {
  130. parent.rotation.y += ( targetRotation - parent.rotation.y ) * 0.05;
  131. renderer.render( scene, camera );
  132. }
  133. </script>
  134. </body>
  135. </html>