webgl_geometry_nurbs.html 8.2 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <!-- based on webgl_geometry_shapes.html and webgl_geometries2.html -->
  4. <head>
  5. <title>three.js webgl - geometry - NURBS</title>
  6. <meta charset="utf-8">
  7. <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
  8. <style>
  9. body {
  10. font-family: Monospace;
  11. background-color: #f0f0f0;
  12. margin: 0px;
  13. overflow: hidden;
  14. }
  15. #info {
  16. position: absolute;
  17. top: 0px;
  18. width: 100%;
  19. padding: 5px;
  20. text-align:center;
  21. }
  22. </style>
  23. </head>
  24. <body>
  25. <canvas id="debug" style="position:absolute; left:100px"></canvas>
  26. <div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - NURBS curve and surface example</div>
  27. <script src="../build/three.min.js"></script>
  28. <script src="js/curves/NURBSCurve.js"></script>
  29. <script src="js/curves/NURBSSurface.js"></script>
  30. <script src="js/curves/NURBSUtils.js"></script>
  31. <script src="js/libs/stats.min.js"></script>
  32. <script>
  33. var container, stats;
  34. var camera, scene, renderer;
  35. var text, plane;
  36. var targetRotation = 0;
  37. var targetRotationOnMouseDown = 0;
  38. var mouseX = 0;
  39. var mouseXOnMouseDown = 0;
  40. var windowHalfX = window.innerWidth / 2;
  41. var windowHalfY = window.innerHeight / 2;
  42. init();
  43. animate();
  44. function init() {
  45. container = document.createElement( 'div' );
  46. document.body.appendChild( container );
  47. var info = document.createElement( 'div' );
  48. info.style.position = 'absolute';
  49. info.style.top = '30px';
  50. info.style.width = '100%';
  51. info.style.textAlign = 'center';
  52. info.innerHTML = 'Drag to spin';
  53. container.appendChild( info );
  54. camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
  55. camera.position.set( 0, 150, 500 );
  56. scene = new THREE.Scene();
  57. scene.add( new THREE.AmbientLight( 0x404040 ) );
  58. var light = new THREE.DirectionalLight( 0xffffff );
  59. light.position.set( 0, 0, 1 );
  60. scene.add( light );
  61. parent = new THREE.Object3D();
  62. parent.position.y = 50;
  63. scene.add( parent );
  64. // NURBS curve
  65. var nurbsControlPoints = [];
  66. nurbsControlPoints.push( new THREE.Vector4 ( 200, 100, 100, 1 ) );
  67. nurbsControlPoints.push( new THREE.Vector4 ( 100, 300, -200, 1 ) );
  68. nurbsControlPoints.push( new THREE.Vector4 ( -100, 200, -40, 1 ) );
  69. nurbsControlPoints.push( new THREE.Vector4 ( -200, 350, 250, 1 ) );
  70. nurbsControlPoints.push( new THREE.Vector4 ( 0, 0, 0, 1 ) );
  71. var nurbsKnots = [0.0, 0.0, 0.0, 0.0, 0.5, 1.0, 1.0, 1.0, 1.0];
  72. var nurbsDegree = 3;
  73. var nurbsCurve = new THREE.NURBSCurve(nurbsDegree, nurbsKnots, nurbsControlPoints);
  74. var posX = 0;
  75. var posY = -100;
  76. var posZ = 0;
  77. var rotX = 0;
  78. var rotY = 0;
  79. var rotZ = 0;
  80. var scaleX = 1;
  81. var scaleY = 1;
  82. var scaleZ = 1;
  83. var nurbsGeometry = new THREE.Geometry();
  84. nurbsGeometry.vertices = nurbsCurve.getPoints(100);
  85. var nurbsMaterial = new THREE.LineBasicMaterial( { linewidth: 10, color: 0x333333, transparent: true } );
  86. var nurbsLine = new THREE.Line( nurbsGeometry, nurbsMaterial );
  87. nurbsLine.position.set( posX, posY, posZ );
  88. nurbsLine.rotation.set( rotX, rotY, rotZ );
  89. nurbsLine.scale.set( scaleX, scaleY, scaleZ );
  90. var nurbsControlPointsGeometry = new THREE.Geometry();
  91. nurbsControlPointsGeometry.vertices = nurbsCurve.controlPoints;
  92. var nurbsControlPointsMaterial = new THREE.LineBasicMaterial( { linewidth: 2, color: 0x333333, transparent: true } );
  93. var nurbsControlPointsLine = new THREE.Line( nurbsControlPointsGeometry, nurbsControlPointsMaterial );
  94. nurbsControlPointsLine.position.set( posX, posY, posZ );
  95. nurbsControlPointsLine.rotation.set( rotX, rotY, rotZ );
  96. nurbsControlPointsLine.scale.set( scaleX, scaleY, scaleZ );
  97. parent.add( nurbsLine );
  98. parent.add( nurbsControlPointsLine );
  99. // NURBS surface
  100. var nsControlPoints = [
  101. [
  102. new THREE.Vector4 ( -200, -200, 100, 1 ),
  103. new THREE.Vector4 ( -200, -100, -200, 1 ),
  104. new THREE.Vector4 ( -200, 100, 250, 1 ),
  105. new THREE.Vector4 ( -200, 200, -100, 1 )
  106. ],
  107. [
  108. new THREE.Vector4 ( 0, -200, 0, 1 ),
  109. new THREE.Vector4 ( 0, -100, -100, 5 ),
  110. new THREE.Vector4 ( 0, 100, 150, 5 ),
  111. new THREE.Vector4 ( 0, 200, 0, 1 )
  112. ],
  113. [
  114. new THREE.Vector4 ( 200, -200, -100, 1 ),
  115. new THREE.Vector4 ( 200, -100, 200, 1 ),
  116. new THREE.Vector4 ( 200, 100, -250, 1 ),
  117. new THREE.Vector4 ( 200, 200, 100, 1 )
  118. ]
  119. ];
  120. var degree1 = 2;
  121. var degree2 = 3;
  122. var knots1 = [0, 0, 0, 1, 1, 1];
  123. var knots2 = [0, 0, 0, 0, 1, 1, 1, 1];
  124. var nurbsSurface = new THREE.NURBSSurface(degree1, degree2, knots1, knots2, nsControlPoints);
  125. var map = THREE.ImageUtils.loadTexture( 'textures/ash_uvgrid01.jpg' );
  126. map.wrapS = map.wrapT = THREE.RepeatWrapping;
  127. map.anisotropy = 16;
  128. var materials = [
  129. new THREE.MeshLambertMaterial( { ambient: 0xbbbbbb, map: map, side: THREE.DoubleSide } ),
  130. new THREE.MeshBasicMaterial( { color: 0xffffff, wireframe: true, transparent: true, opacity: 0.1, side: THREE.DoubleSide } )
  131. ];
  132. getSurfacePoint = function(u, v) {
  133. return nurbsSurface.getPoint(u, v);
  134. };
  135. var geo = new THREE.ParametricGeometry( getSurfacePoint, 20, 20 );
  136. var object = THREE.SceneUtils.createMultiMaterialObject( geo, materials );
  137. object.position.set( 0, 100, 0 );
  138. object.scale.multiplyScalar( 1 );
  139. parent.add( object );
  140. //
  141. renderer = new THREE.WebGLRenderer( { antialias: true } );
  142. renderer.setSize( window.innerWidth, window.innerHeight );
  143. container.appendChild( renderer.domElement );
  144. stats = new Stats();
  145. stats.domElement.style.position = 'absolute';
  146. stats.domElement.style.top = '0px';
  147. container.appendChild( stats.domElement );
  148. document.addEventListener( 'mousedown', onDocumentMouseDown, false );
  149. document.addEventListener( 'touchstart', onDocumentTouchStart, false );
  150. document.addEventListener( 'touchmove', onDocumentTouchMove, false );
  151. //
  152. window.addEventListener( 'resize', onWindowResize, false );
  153. }
  154. function onWindowResize() {
  155. windowHalfX = window.innerWidth / 2;
  156. windowHalfY = window.innerHeight / 2;
  157. camera.aspect = window.innerWidth / window.innerHeight;
  158. camera.updateProjectionMatrix();
  159. renderer.setSize( window.innerWidth, window.innerHeight );
  160. }
  161. //
  162. function onDocumentMouseDown( event ) {
  163. event.preventDefault();
  164. document.addEventListener( 'mousemove', onDocumentMouseMove, false );
  165. document.addEventListener( 'mouseup', onDocumentMouseUp, false );
  166. document.addEventListener( 'mouseout', onDocumentMouseOut, false );
  167. mouseXOnMouseDown = event.clientX - windowHalfX;
  168. targetRotationOnMouseDown = targetRotation;
  169. }
  170. function onDocumentMouseMove( event ) {
  171. mouseX = event.clientX - windowHalfX;
  172. targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
  173. }
  174. function onDocumentMouseUp( event ) {
  175. document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
  176. document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
  177. document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
  178. }
  179. function onDocumentMouseOut( event ) {
  180. document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
  181. document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
  182. document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
  183. }
  184. function onDocumentTouchStart( event ) {
  185. if ( event.touches.length == 1 ) {
  186. event.preventDefault();
  187. mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
  188. targetRotationOnMouseDown = targetRotation;
  189. }
  190. }
  191. function onDocumentTouchMove( event ) {
  192. if ( event.touches.length == 1 ) {
  193. event.preventDefault();
  194. mouseX = event.touches[ 0 ].pageX - windowHalfX;
  195. targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;
  196. }
  197. }
  198. //
  199. function animate() {
  200. requestAnimationFrame( animate );
  201. render();
  202. stats.update();
  203. }
  204. function render() {
  205. parent.rotation.y += ( targetRotation - parent.rotation.y ) * 0.05;
  206. renderer.render( scene, camera );
  207. }
  208. </script>
  209. </body>
  210. </html>