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canvas_geometry_text.html 5.4 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js canvas - geometry - text</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/renderers/Projector.js"></script>
  19. <script src="js/renderers/CanvasRenderer.js"></script>
  20. <script src="js/libs/stats.min.js"></script>
  21. <script>
  22. var container, stats;
  23. var camera, scene, renderer;
  24. var group;
  25. var targetRotation = 0;
  26. var targetRotationOnMouseDown = 0;
  27. var mouseX = 0;
  28. var mouseXOnMouseDown = 0;
  29. var windowHalfX = window.innerWidth / 2;
  30. var windowHalfY = window.innerHeight / 2;
  31. var loader = new THREE.FontLoader();
  32. loader.load( 'fonts/helvetiker_regular.typeface.js', function ( font ) {
  33. init( font );
  34. animate();
  35. } );
  36. function init( font ) {
  37. container = document.createElement( 'div' );
  38. document.body.appendChild( container );
  39. var info = document.createElement( 'div' );
  40. info.style.position = 'absolute';
  41. info.style.top = '10px';
  42. info.style.width = '100%';
  43. info.style.textAlign = 'center';
  44. info.innerHTML = 'Simple Dynamic 3D Text Example by <a href="http://www.lab4games.net/zz85/blog">zz85</a><br>Drag to spin the text';
  45. container.appendChild( info );
  46. camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
  47. camera.position.set( 0, 150, 500 );
  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 geometry = new THREE.TextGeometry( theText, {
  56. font: font,
  57. size: 80,
  58. height: 20,
  59. curveSegments: 2
  60. });
  61. geometry.computeBoundingBox();
  62. var centerOffset = -0.5 * ( geometry.boundingBox.max.x - geometry.boundingBox.min.x );
  63. var material = new THREE.MultiMaterial( [
  64. new THREE.MeshBasicMaterial( { color: Math.random() * 0xffffff, overdraw: 0.5 } ),
  65. new THREE.MeshBasicMaterial( { color: 0x000000, overdraw: 0.5 } )
  66. ] );
  67. var mesh = new THREE.Mesh( geometry, material );
  68. mesh.position.x = centerOffset;
  69. mesh.position.y = 100;
  70. mesh.position.z = 0;
  71. mesh.rotation.x = 0;
  72. mesh.rotation.y = Math.PI * 2;
  73. group = new THREE.Group();
  74. group.add( mesh );
  75. scene.add( group );
  76. renderer = new THREE.CanvasRenderer();
  77. renderer.setClearColor( 0xf0f0f0 );
  78. renderer.setPixelRatio( window.devicePixelRatio );
  79. renderer.setSize( window.innerWidth, window.innerHeight );
  80. container.appendChild( renderer.domElement );
  81. stats = new Stats();
  82. stats.domElement.style.position = 'absolute';
  83. stats.domElement.style.top = '0px';
  84. container.appendChild( stats.domElement );
  85. document.addEventListener( 'mousedown', onDocumentMouseDown, false );
  86. document.addEventListener( 'touchstart', onDocumentTouchStart, false );
  87. document.addEventListener( 'touchmove', onDocumentTouchMove, false );
  88. //
  89. window.addEventListener( 'resize', onWindowResize, false );
  90. }
  91. function onWindowResize() {
  92. windowHalfX = window.innerWidth / 2;
  93. windowHalfY = window.innerHeight / 2;
  94. camera.aspect = window.innerWidth / window.innerHeight;
  95. camera.updateProjectionMatrix();
  96. renderer.setSize( window.innerWidth, window.innerHeight );
  97. }
  98. //
  99. function onDocumentMouseDown( event ) {
  100. event.preventDefault();
  101. document.addEventListener( 'mousemove', onDocumentMouseMove, false );
  102. document.addEventListener( 'mouseup', onDocumentMouseUp, false );
  103. document.addEventListener( 'mouseout', onDocumentMouseOut, false );
  104. mouseXOnMouseDown = event.clientX - windowHalfX;
  105. targetRotationOnMouseDown = targetRotation;
  106. }
  107. function onDocumentMouseMove( event ) {
  108. mouseX = event.clientX - windowHalfX;
  109. targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
  110. }
  111. function onDocumentMouseUp( event ) {
  112. document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
  113. document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
  114. document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
  115. }
  116. function onDocumentMouseOut( event ) {
  117. document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
  118. document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
  119. document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
  120. }
  121. function onDocumentTouchStart( event ) {
  122. if ( event.touches.length == 1 ) {
  123. event.preventDefault();
  124. mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
  125. targetRotationOnMouseDown = targetRotation;
  126. }
  127. }
  128. function onDocumentTouchMove( event ) {
  129. if ( event.touches.length == 1 ) {
  130. event.preventDefault();
  131. mouseX = event.touches[ 0 ].pageX - windowHalfX;
  132. targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;
  133. }
  134. }
  135. //
  136. function animate() {
  137. requestAnimationFrame( animate );
  138. render();
  139. stats.update();
  140. }
  141. function render() {
  142. group.rotation.y += ( targetRotation - group.rotation.y ) * 0.05;
  143. renderer.render( scene, camera );
  144. }
  145. </script>
  146. </body>
  147. </html>