css3d_sprites.html 4.7 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212
  1. <!DOCTYPE html>
  2. <html>
  3. <head>
  4. <title>three.js css3d - sprites</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. color: #000;
  12. }
  13. a {
  14. color: #48f;
  15. }
  16. </style>
  17. </head>
  18. <body>
  19. <script src="js/libs/tween.min.js"></script>
  20. <div id="info"><a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> css3d - sprites</div>
  21. <div id="container"></div>
  22. <script type="module">
  23. import {
  24. PerspectiveCamera,
  25. Scene
  26. } from "../build/three.module.js";
  27. import { TrackballControls } from './jsm/controls/TrackballControls.js';
  28. import { CSS3DRenderer, CSS3DSprite } from './jsm/renderers/CSS3DRenderer.js';
  29. var camera, scene, renderer;
  30. var controls;
  31. var particlesTotal = 512;
  32. var positions = [];
  33. var objects = [];
  34. var current = 0;
  35. init();
  36. animate();
  37. function init() {
  38. camera = new PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 5000 );
  39. camera.position.set( 600, 400, 1500 );
  40. camera.lookAt( 0, 0, 0 );
  41. scene = new Scene();
  42. var image = document.createElement( 'img' );
  43. image.addEventListener( 'load', function () {
  44. for ( var i = 0; i < particlesTotal; i ++ ) {
  45. var object = new CSS3DSprite( image.cloneNode() );
  46. object.position.x = Math.random() * 4000 - 2000,
  47. object.position.y = Math.random() * 4000 - 2000,
  48. object.position.z = Math.random() * 4000 - 2000;
  49. scene.add( object );
  50. objects.push( object );
  51. }
  52. transition();
  53. }, false );
  54. image.src = 'textures/sprite.png';
  55. // Plane
  56. var amountX = 16;
  57. var amountZ = 32;
  58. var separation = 150;
  59. var offsetX = ( ( amountX - 1 ) * separation ) / 2;
  60. var offsetZ = ( ( amountZ - 1 ) * separation ) / 2;
  61. for ( var i = 0; i < particlesTotal; i ++ ) {
  62. var x = ( i % amountX ) * separation;
  63. var z = Math.floor( i / amountX ) * separation;
  64. var y = ( Math.sin( x * 0.5 ) + Math.sin( z * 0.5 ) ) * 200;
  65. positions.push( x - offsetX, y, z - offsetZ );
  66. }
  67. // Cube
  68. var amount = 8;
  69. var separation = 150;
  70. var offset = ( ( amount - 1 ) * separation ) / 2;
  71. for ( var i = 0; i < particlesTotal; i ++ ) {
  72. var x = ( i % amount ) * separation;
  73. var y = Math.floor( ( i / amount ) % amount ) * separation;
  74. var z = Math.floor( i / ( amount * amount ) ) * separation;
  75. positions.push( x - offset, y - offset, z - offset );
  76. }
  77. // Random
  78. for ( var i = 0; i < particlesTotal; i ++ ) {
  79. positions.push(
  80. Math.random() * 4000 - 2000,
  81. Math.random() * 4000 - 2000,
  82. Math.random() * 4000 - 2000
  83. );
  84. }
  85. // Sphere
  86. var radius = 750;
  87. for ( var i = 0; i < particlesTotal; i ++ ) {
  88. var phi = Math.acos( - 1 + ( 2 * i ) / particlesTotal );
  89. var theta = Math.sqrt( particlesTotal * Math.PI ) * phi;
  90. positions.push(
  91. radius * Math.cos( theta ) * Math.sin( phi ),
  92. radius * Math.sin( theta ) * Math.sin( phi ),
  93. radius * Math.cos( phi )
  94. );
  95. }
  96. //
  97. renderer = new CSS3DRenderer();
  98. renderer.setSize( window.innerWidth, window.innerHeight );
  99. document.getElementById( 'container' ).appendChild( renderer.domElement );
  100. //
  101. controls = new TrackballControls( camera, renderer.domElement );
  102. //
  103. window.addEventListener( 'resize', onWindowResize, false );
  104. }
  105. function onWindowResize() {
  106. camera.aspect = window.innerWidth / window.innerHeight;
  107. camera.updateProjectionMatrix();
  108. renderer.setSize( window.innerWidth, window.innerHeight );
  109. }
  110. function transition() {
  111. var offset = current * particlesTotal * 3;
  112. var duration = 2000;
  113. for ( var i = 0, j = offset; i < particlesTotal; i ++, j += 3 ) {
  114. var object = objects[ i ];
  115. new TWEEN.Tween( object.position )
  116. .to( {
  117. x: positions[ j ],
  118. y: positions[ j + 1 ],
  119. z: positions[ j + 2 ]
  120. }, Math.random() * duration + duration )
  121. .easing( TWEEN.Easing.Exponential.InOut )
  122. .start();
  123. }
  124. new TWEEN.Tween( this )
  125. .to( {}, duration * 3 )
  126. .onComplete( transition )
  127. .start();
  128. current = ( current + 1 ) % 4;
  129. }
  130. function animate() {
  131. requestAnimationFrame( animate );
  132. TWEEN.update();
  133. controls.update();
  134. var time = performance.now();
  135. for ( var i = 0, l = objects.length; i < l; i ++ ) {
  136. var object = objects[ i ];
  137. var scale = Math.sin( ( Math.floor( object.position.x ) + time ) * 0.002 ) * 0.3 + 1;
  138. object.scale.set( scale, scale, scale );
  139. }
  140. renderer.render( scene, camera );
  141. }
  142. </script>
  143. </body>
  144. </html>