webgl_collisions_primitives.html 5.5 KB

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  1. <!doctype html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js webgl - intersection: ray with sphere/AABB/plane</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. #oldie {
  15. background-color: #ddd !important
  16. }
  17. #info {
  18. position: absolute;
  19. top: 30px;
  20. left: 150px;
  21. width: 800px;
  22. color: #000000;
  23. padding: 5px;
  24. font-family: Monospace;
  25. font-size: 13px;
  26. text-align: left;
  27. z-index: 100;
  28. }
  29. #options {
  30. position: absolute;
  31. top: 10px;
  32. left: 150px;
  33. width: 800px;
  34. color: #000000;
  35. padding: 5px;
  36. font-family: Monospace;
  37. font-size: 13px;
  38. text-align: left;
  39. z-index: 100;
  40. }
  41. </style>
  42. <script src="../build/Three.js"></script>
  43. <script src="js/RequestAnimationFrame.js"></script>
  44. <script src="js/Stats.js"></script>
  45. <script>
  46. var camera, scene, projector, renderer,
  47. info, mouse = { x: 0, y: 0 }, sun;
  48. var theta = 0;
  49. var camdist = 1500;
  50. var geoms = [];
  51. function init () {
  52. container = document.createElement('div');
  53. document.body.appendChild(container);
  54. info = document.getElementById("info");
  55. camera = new THREE.Camera(40, window.innerWidth / window.innerHeight, 1, 10000);
  56. scene = new THREE.Scene();
  57. projector = new THREE.Projector();
  58. renderer = new THREE.WebGLRenderer();
  59. renderer.setSize(window.innerWidth, window.innerHeight);
  60. container.appendChild(renderer.domElement);
  61. var ambientLight = new THREE.AmbientLight(0x606060);
  62. scene.add(ambientLight);
  63. sun = new THREE.DirectionalLight(0xffffff);
  64. scene.add(sun);
  65. //makeWall(480);
  66. //makeWall(360);
  67. makeWall(240);
  68. makeWall(120);
  69. makeWall(0);
  70. makeWall(-120);
  71. makeWall(-240);
  72. //makeWall(-360);
  73. //makeWall(-480);
  74. plane = new THREE.Mesh( new THREE.PlaneGeometry( 30000, 30000, 10, 10 ), new THREE.MeshLambertMaterial( { color: 0x003300 } ) );
  75. plane.position.y = - 480;
  76. plane.rotation.x = Math.PI / - 2;
  77. scene.add( plane );
  78. geoms.push( plane );
  79. var cplane = new THREE.PlaneCollider( plane.position, new THREE.Vector3( 0, 1, 0 ) );
  80. cplane.mesh = plane;
  81. THREE.Collisions.colliders.push( cplane );
  82. stats = new Stats();
  83. stats.domElement.style.position = 'absolute';
  84. stats.domElement.style.top = '0px';
  85. container.appendChild( stats.domElement );
  86. container.onmousemove = onDocumentMouseMove;
  87. animate();
  88. }
  89. function makeWall(z){
  90. var mx = 120 * 2;
  91. for (var i = -mx; i <= mx; i += 120) {
  92. for (var j = -mx; j <= mx; j += 120) {
  93. if (Math.random() > 0.5)
  94. createCube(100, new THREE.Vector3(j, i, z));
  95. else
  96. createSphere(50, new THREE.Vector3(j, i, z));
  97. }
  98. }
  99. }
  100. function createCube(s, p){
  101. var cube = new THREE.Mesh(new THREE.CubeGeometry( s, s, s ), new THREE.MeshLambertMaterial( { color: 0x003300 } ) );
  102. cube.position = p;
  103. scene.add(cube);
  104. geoms.push(cube);
  105. THREE.Collisions.colliders.push(THREE.CollisionUtils.MeshAABB(cube, p));
  106. }
  107. function createSphere(rad, p){
  108. var sphere = new THREE.Mesh( new THREE.SphereGeometry( rad, 10, 10 ), new THREE.MeshLambertMaterial( { color: 0x003300 } ) );
  109. sphere.position = p;
  110. scene.add(sphere);
  111. geoms.push(sphere);
  112. var sc = new THREE.SphereCollider(p, rad);
  113. sc.mesh = sphere;
  114. THREE.Collisions.colliders.push(sc);
  115. }
  116. function onDocumentMouseMove(event){
  117. event.preventDefault();
  118. mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
  119. mouse.y = -(event.clientY / window.innerHeight) * 2 + 1;
  120. }
  121. function animate(){
  122. requestAnimationFrame( animate );
  123. var vector = new THREE.Vector3( mouse.x, mouse.y, 0.5 );
  124. projector.unprojectVector( vector, camera );
  125. var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );
  126. for ( var i = 0; i < geoms.length; i++) {
  127. geoms[i].materials[0].color = new THREE.Color(0x007700);
  128. }
  129. if ( !document.getElementById( "nearest" ).checked ) {
  130. // Raycast all
  131. ts = new Date().getTime();
  132. var cs = THREE.Collisions.rayCastAll( ray );
  133. tt = new Date().getTime() - ts;
  134. if ( cs.length > 0 ) {
  135. info.innerHTML = cs.length + " colliders found in " + tt;
  136. for ( var i = 0; i < cs.length; i ++ ) {
  137. cs[ i ].mesh.materials[ 0 ].color.setHex( 0xaa0000 );
  138. }
  139. } else {
  140. info.innerHTML = "No intersection";
  141. }
  142. } else {
  143. // Raycast nearest
  144. ts = new Date().getTime();
  145. var c = THREE.Collisions.rayCastNearest( ray );
  146. tt = new Date().getTime() - ts;
  147. if ( c ) {
  148. info.innerHTML = "Found in " + tt + " @ distance " + c.distance;
  149. c.mesh.materials[ 0 ].color.setHex( 0xaa0000 );
  150. } else {
  151. info.innerHTML = "No intersection";
  152. }
  153. }
  154. camera.position.x = camdist * Math.cos(theta);
  155. camera.position.z = camdist * Math.sin(theta);
  156. camera.position.y = camdist / 2 * Math.sin(theta * 2);
  157. sun.position = camera.position.clone();
  158. sun.position.normalize();
  159. theta += 0.005;
  160. renderer.render( scene, camera );
  161. stats.update();
  162. }
  163. function vts(v){
  164. if (!v)
  165. return "undefined<br>";
  166. else
  167. return v.x + " , " + v.y + " , " + v.z + "<br>";
  168. }
  169. </script>
  170. </head>
  171. <body onload="init();">
  172. <div id="info">
  173. </div>
  174. <div id="options">
  175. <input type="checkbox" id="nearest" checked/> Nearest collider only
  176. <br/>
  177. </div>
  178. </body>
  179. </html>