webgl_decals.html 6.8 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js webgl - decals - Decal Splatter</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. background:#777;
  10. padding:0;
  11. margin:0;
  12. font-weight: bold;
  13. overflow:hidden;
  14. }
  15. #info {
  16. position: absolute;
  17. top: 0px;
  18. width: 100%;
  19. color: #ffffff;
  20. padding: 5px;
  21. font-family:Monospace;
  22. font-size:13px;
  23. text-align:center;
  24. }
  25. a {
  26. color: #ffffff;
  27. }
  28. </style>
  29. </head>
  30. <body>
  31. <div id="container"></div>
  32. <div id="info"><a href="https://threejs.org" target="_blank">three.js</a> - decals - Decal Splatter (click or tap to shoot)</div>
  33. <script src="../build/three.js"></script>
  34. <script src="js/controls/OrbitControls.js"></script>
  35. <script src="js/libs/dat.gui.min.js"></script>
  36. <script>
  37. var container = document.getElementById( 'container' );
  38. var renderer, scene, camera, fov = 45;
  39. var mesh, decal;
  40. var raycaster;
  41. var line;
  42. var intersection = {
  43. intersects: false,
  44. point: new THREE.Vector3(),
  45. normal: new THREE.Vector3()
  46. };
  47. var controls;
  48. var mouse = new THREE.Vector2();
  49. var textureLoader = new THREE.TextureLoader();
  50. var decalDiffuse = textureLoader.load( 'textures/decal/decal-diffuse.png' );
  51. var decalNormal = textureLoader.load( 'textures/decal/decal-normal.jpg' );
  52. var decalMaterial = new THREE.MeshPhongMaterial( {
  53. specular: 0x444444,
  54. map: decalDiffuse,
  55. normalMap: decalNormal,
  56. normalScale: new THREE.Vector2( 1, 1 ),
  57. shininess: 30,
  58. transparent: true,
  59. depthTest: true,
  60. depthWrite: false,
  61. polygonOffset: true,
  62. polygonOffsetFactor: - 4,
  63. wireframe: false
  64. } );
  65. var decals = [];
  66. var mouseHelper;
  67. var position = new THREE.Vector3();
  68. var orientation = new THREE.Euler();
  69. var size = new THREE.Vector3( 10, 10, 10 );
  70. var up = new THREE.Vector3( 0, 1, 0 );
  71. var params = {
  72. minScale: 10,
  73. maxScale: 20,
  74. rotate: true,
  75. clear: function() {
  76. removeDecals();
  77. }
  78. };
  79. window.addEventListener( 'load', init );
  80. function init() {
  81. renderer = new THREE.WebGLRenderer( { antialias: true } );
  82. renderer.setPixelRatio( window.devicePixelRatio );
  83. renderer.setSize( window.innerWidth, window.innerHeight );
  84. container.appendChild( renderer.domElement );
  85. scene = new THREE.Scene();
  86. camera = new THREE.PerspectiveCamera( fov, window.innerWidth / window.innerHeight, 1, 1000 );
  87. camera.position.z = 120;
  88. camera.target = new THREE.Vector3();
  89. controls = new THREE.OrbitControls( camera, renderer.domElement );
  90. controls.minDistance = 50;
  91. controls.maxDistance = 200;
  92. scene.add( new THREE.AmbientLight( 0x443333 ) );
  93. var light = new THREE.DirectionalLight( 0xffddcc, 1 );
  94. light.position.set( 1, 0.75, 0.5 );
  95. scene.add( light );
  96. var light = new THREE.DirectionalLight( 0xccccff, 1 );
  97. light.position.set( -1, 0.75, -0.5 );
  98. scene.add( light );
  99. var geometry = new THREE.Geometry();
  100. geometry.vertices.push( new THREE.Vector3(), new THREE.Vector3() );
  101. line = new THREE.Line( geometry, new THREE.LineBasicMaterial( { linewidth: 4 } ) );
  102. scene.add( line );
  103. loadLeePerrySmith();
  104. raycaster = new THREE.Raycaster();
  105. mouseHelper = new THREE.Mesh( new THREE.BoxGeometry( 1, 1, 10 ), new THREE.MeshNormalMaterial() );
  106. mouseHelper.visible = false;
  107. scene.add( mouseHelper );
  108. window.addEventListener( 'resize', onWindowResize, false );
  109. var moved = false;
  110. controls.addEventListener( 'change', function() {
  111. moved = true;
  112. } );
  113. window.addEventListener( 'mousedown', function () {
  114. moved = false;
  115. }, false );
  116. window.addEventListener( 'mouseup', function() {
  117. checkIntersection();
  118. if ( ! moved && intersection.intersects ) shoot();
  119. } );
  120. window.addEventListener( 'mousemove', onTouchMove );
  121. window.addEventListener( 'touchmove', onTouchMove );
  122. function onTouchMove( event ) {
  123. if ( event.changedTouches ) {
  124. x = event.changedTouches[ 0 ].pageX;
  125. y = event.changedTouches[ 0 ].pageY;
  126. } else {
  127. x = event.clientX;
  128. y = event.clientY;
  129. }
  130. mouse.x = ( x / window.innerWidth ) * 2 - 1;
  131. mouse.y = - ( y / window.innerHeight ) * 2 + 1;
  132. checkIntersection();
  133. }
  134. function checkIntersection() {
  135. if ( ! mesh ) return;
  136. raycaster.setFromCamera( mouse, camera );
  137. var intersects = raycaster.intersectObjects( [ mesh ] );
  138. if ( intersects.length > 0 ) {
  139. var p = intersects[ 0 ].point;
  140. mouseHelper.position.copy( p );
  141. intersection.point.copy( p );
  142. var n = intersects[ 0 ].face.normal.clone();
  143. n.multiplyScalar( 10 );
  144. n.add( intersects[ 0 ].point );
  145. intersection.normal.copy( intersects[ 0 ].face.normal );
  146. mouseHelper.lookAt( n );
  147. line.geometry.vertices[ 0 ].copy( intersection.point );
  148. line.geometry.vertices[ 1 ].copy( n );
  149. line.geometry.verticesNeedUpdate = true;
  150. intersection.intersects = true;
  151. } else {
  152. intersection.intersects = false;
  153. }
  154. }
  155. var gui = new dat.GUI();
  156. gui.add( params, 'minScale', 1, 30 );
  157. gui.add( params, 'maxScale', 1, 30 );
  158. gui.add( params, 'rotate' );
  159. gui.add( params, 'clear' );
  160. gui.open();
  161. onWindowResize();
  162. animate();
  163. }
  164. function loadLeePerrySmith( callback ) {
  165. var loader = new THREE.JSONLoader();
  166. loader.load( 'obj/leeperrysmith/LeePerrySmith.js', function( geometry ) {
  167. var material = new THREE.MeshPhongMaterial( {
  168. specular: 0x111111,
  169. map: textureLoader.load( 'obj/leeperrysmith/Map-COL.jpg' ),
  170. specularMap: textureLoader.load( 'obj/leeperrysmith/Map-SPEC.jpg' ),
  171. normalMap: textureLoader.load( 'obj/leeperrysmith/Infinite-Level_02_Tangent_SmoothUV.jpg' ),
  172. shininess: 25
  173. } );
  174. mesh = new THREE.Mesh( geometry, material );
  175. scene.add( mesh );
  176. mesh.scale.set( 10, 10, 10 );
  177. } );
  178. }
  179. function shoot() {
  180. position.copy( intersection.point );
  181. orientation.copy( mouseHelper.rotation );
  182. if ( params.rotate ) orientation.z = Math.random() * 2 * Math.PI;
  183. var scale = params.minScale + Math.random() * ( params.maxScale - params.minScale );
  184. size.set( scale, scale, scale );
  185. var material = decalMaterial.clone();
  186. material.color.setHex( Math.random() * 0xffffff );
  187. var m = new THREE.Mesh( new THREE.DecalGeometry( mesh, position, orientation, size ), material );
  188. decals.push( m );
  189. scene.add( m );
  190. }
  191. function removeDecals() {
  192. decals.forEach( function( d ) {
  193. scene.remove( d );
  194. } );
  195. decals = [];
  196. }
  197. function onWindowResize() {
  198. camera.aspect = window.innerWidth / window.innerHeight;
  199. camera.updateProjectionMatrix();
  200. renderer.setSize( window.innerWidth, window.innerHeight );
  201. }
  202. function animate() {
  203. requestAnimationFrame( animate );
  204. renderer.render( scene, camera );
  205. }
  206. </script>
  207. </body>
  208. </html>