SVGLoader.js 23 KB

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  1. /**
  2. * @author mrdoob / http://mrdoob.com/
  3. * @author zz85 / http://joshuakoo.com/
  4. * @author yomboprime / https://yombo.org
  5. */
  6. THREE.SVGLoader = function ( manager ) {
  7. this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
  8. };
  9. THREE.SVGLoader.prototype = {
  10. constructor: THREE.SVGLoader,
  11. load: function ( url, onLoad, onProgress, onError ) {
  12. var scope = this;
  13. var loader = new THREE.FileLoader( scope.manager );
  14. loader.load( url, function ( text ) {
  15. onLoad( scope.parse( text ) );
  16. }, onProgress, onError );
  17. },
  18. parse: function ( text ) {
  19. function parseNode( node, style ) {
  20. if ( node.nodeType !== 1 ) return;
  21. var transform = getNodeTransform( node );
  22. var path = null;
  23. switch ( node.nodeName ) {
  24. case 'svg':
  25. break;
  26. case 'g':
  27. style = parseStyle( node, style );
  28. break;
  29. case 'path':
  30. style = parseStyle( node, style );
  31. if ( node.hasAttribute( 'd' ) && isVisible( style ) ) path = parsePathNode( node, style );
  32. break;
  33. case 'rect':
  34. style = parseStyle( node, style );
  35. if ( isVisible( style ) ) path = parseRectNode( node, style );
  36. break;
  37. case 'polygon':
  38. style = parseStyle( node, style );
  39. if ( isVisible( style ) ) path = parsePolygonNode( node, style );
  40. break;
  41. case 'polyline':
  42. style = parseStyle( node, style );
  43. if ( isVisible( style ) ) path = parsePolylineNode( node, style );
  44. break;
  45. case 'circle':
  46. style = parseStyle( node, style );
  47. if ( isVisible( style ) ) path = parseCircleNode( node, style );
  48. break;
  49. case 'ellipse':
  50. style = parseStyle( node, style );
  51. if ( isVisible( style ) ) path = parseEllipseNode( node, style );
  52. break;
  53. case 'line':
  54. style = parseStyle( node, style );
  55. if ( isVisible( style ) ) path = parseLineNode( node, style );
  56. break;
  57. default:
  58. console.log( node );
  59. }
  60. if ( path ) {
  61. transformPath( path, currentTransform );
  62. paths.push( path );
  63. }
  64. var nodes = node.childNodes;
  65. for ( var i = 0; i < nodes.length; i ++ ) {
  66. parseNode( nodes[ i ], style );
  67. }
  68. if ( transform ) {
  69. currentTransform.copy( transformStack.pop() );
  70. }
  71. }
  72. function parsePathNode( node, style ) {
  73. var path = new THREE.ShapePath();
  74. path.color.setStyle( style.fill );
  75. var point = new THREE.Vector2();
  76. var control = new THREE.Vector2();
  77. var firstPoint = new THREE.Vector2();
  78. var isFirstPoint = true;
  79. var doSetFirstPoint = false;
  80. var d = node.getAttribute( 'd' );
  81. // console.log( d );
  82. var commands = d.match( /[a-df-z][^a-df-z]*/ig );
  83. for ( var i = 0, l = commands.length; i < l; i ++ ) {
  84. var command = commands[ i ];
  85. var type = command.charAt( 0 );
  86. var data = command.substr( 1 ).trim();
  87. if ( isFirstPoint ) {
  88. doSetFirstPoint = true;
  89. }
  90. isFirstPoint = false;
  91. switch ( type ) {
  92. case 'M':
  93. var numbers = parseFloats( data );
  94. for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
  95. point.x = numbers[ j + 0 ];
  96. point.y = numbers[ j + 1 ];
  97. control.x = point.x;
  98. control.y = point.y;
  99. if ( j === 0 ) {
  100. path.moveTo( point.x, point.y );
  101. } else {
  102. path.lineTo( point.x, point.y );
  103. }
  104. }
  105. break;
  106. case 'H':
  107. var numbers = parseFloats( data );
  108. for ( var j = 0, jl = numbers.length; j < jl; j ++ ) {
  109. point.x = numbers[ j ];
  110. control.x = point.x;
  111. control.y = point.y;
  112. path.lineTo( point.x, point.y );
  113. }
  114. break;
  115. case 'V':
  116. var numbers = parseFloats( data );
  117. for ( var j = 0, jl = numbers.length; j < jl; j ++ ) {
  118. point.y = numbers[ j ];
  119. control.x = point.x;
  120. control.y = point.y;
  121. path.lineTo( point.x, point.y );
  122. }
  123. break;
  124. case 'L':
  125. var numbers = parseFloats( data );
  126. for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
  127. point.x = numbers[ j + 0 ];
  128. point.y = numbers[ j + 1 ];
  129. control.x = point.x;
  130. control.y = point.y;
  131. path.lineTo( point.x, point.y );
  132. }
  133. break;
  134. case 'C':
  135. var numbers = parseFloats( data );
  136. for ( var j = 0, jl = numbers.length; j < jl; j += 6 ) {
  137. path.bezierCurveTo(
  138. numbers[ j + 0 ],
  139. numbers[ j + 1 ],
  140. numbers[ j + 2 ],
  141. numbers[ j + 3 ],
  142. numbers[ j + 4 ],
  143. numbers[ j + 5 ]
  144. );
  145. control.x = numbers[ j + 2 ];
  146. control.y = numbers[ j + 3 ];
  147. point.x = numbers[ j + 4 ];
  148. point.y = numbers[ j + 5 ];
  149. }
  150. break;
  151. case 'S':
  152. var numbers = parseFloats( data );
  153. for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
  154. path.bezierCurveTo(
  155. getReflection( point.x, control.x ),
  156. getReflection( point.y, control.y ),
  157. numbers[ j + 0 ],
  158. numbers[ j + 1 ],
  159. numbers[ j + 2 ],
  160. numbers[ j + 3 ]
  161. );
  162. control.x = numbers[ j + 0 ];
  163. control.y = numbers[ j + 1 ];
  164. point.x = numbers[ j + 2 ];
  165. point.y = numbers[ j + 3 ];
  166. }
  167. break;
  168. case 'Q':
  169. var numbers = parseFloats( data );
  170. for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
  171. path.quadraticCurveTo(
  172. numbers[ j + 0 ],
  173. numbers[ j + 1 ],
  174. numbers[ j + 2 ],
  175. numbers[ j + 3 ]
  176. );
  177. control.x = numbers[ j + 0 ];
  178. control.y = numbers[ j + 1 ];
  179. point.x = numbers[ j + 2 ];
  180. point.y = numbers[ j + 3 ];
  181. }
  182. break;
  183. case 'T':
  184. var numbers = parseFloats( data );
  185. for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
  186. var rx = getReflection( point.x, control.x );
  187. var ry = getReflection( point.y, control.y );
  188. path.quadraticCurveTo(
  189. rx,
  190. ry,
  191. numbers[ j + 0 ],
  192. numbers[ j + 1 ]
  193. );
  194. control.x = rx;
  195. control.y = ry;
  196. point.x = numbers[ j + 0 ];
  197. point.y = numbers[ j + 1 ];
  198. }
  199. break;
  200. case 'A':
  201. var numbers = parseFloats( data );
  202. for ( var j = 0, jl = numbers.length; j < jl; j += 7 ) {
  203. var start = point.clone();
  204. point.x = numbers[ j + 5 ];
  205. point.y = numbers[ j + 6 ];
  206. control.x = point.x;
  207. control.y = point.y;
  208. parseArcCommand(
  209. path, numbers[ j ], numbers[ j + 1 ], numbers[ j + 2 ], numbers[ j + 3 ], numbers[ j + 4 ], start, point
  210. );
  211. }
  212. break;
  213. //
  214. case 'm':
  215. var numbers = parseFloats( data );
  216. for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
  217. point.x += numbers[ j + 0 ];
  218. point.y += numbers[ j + 1 ];
  219. control.x = point.x;
  220. control.y = point.y;
  221. if ( j === 0 ) {
  222. path.moveTo( point.x, point.y );
  223. } else {
  224. path.lineTo( point.x, point.y );
  225. }
  226. }
  227. break;
  228. case 'h':
  229. var numbers = parseFloats( data );
  230. for ( var j = 0, jl = numbers.length; j < jl; j ++ ) {
  231. point.x += numbers[ j ];
  232. control.x = point.x;
  233. control.y = point.y;
  234. path.lineTo( point.x, point.y );
  235. }
  236. break;
  237. case 'v':
  238. var numbers = parseFloats( data );
  239. for ( var j = 0, jl = numbers.length; j < jl; j ++ ) {
  240. point.y += numbers[ j ];
  241. control.x = point.x;
  242. control.y = point.y;
  243. path.lineTo( point.x, point.y );
  244. }
  245. break;
  246. case 'l':
  247. var numbers = parseFloats( data );
  248. for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
  249. point.x += numbers[ j + 0 ];
  250. point.y += numbers[ j + 1 ];
  251. control.x = point.x;
  252. control.y = point.y;
  253. path.lineTo( point.x, point.y );
  254. }
  255. break;
  256. case 'c':
  257. var numbers = parseFloats( data );
  258. for ( var j = 0, jl = numbers.length; j < jl; j += 6 ) {
  259. path.bezierCurveTo(
  260. point.x + numbers[ j + 0 ],
  261. point.y + numbers[ j + 1 ],
  262. point.x + numbers[ j + 2 ],
  263. point.y + numbers[ j + 3 ],
  264. point.x + numbers[ j + 4 ],
  265. point.y + numbers[ j + 5 ]
  266. );
  267. control.x = point.x + numbers[ j + 2 ];
  268. control.y = point.y + numbers[ j + 3 ];
  269. point.x += numbers[ j + 4 ];
  270. point.y += numbers[ j + 5 ];
  271. }
  272. break;
  273. case 's':
  274. var numbers = parseFloats( data );
  275. for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
  276. path.bezierCurveTo(
  277. getReflection( point.x, control.x ),
  278. getReflection( point.y, control.y ),
  279. point.x + numbers[ j + 0 ],
  280. point.y + numbers[ j + 1 ],
  281. point.x + numbers[ j + 2 ],
  282. point.y + numbers[ j + 3 ]
  283. );
  284. control.x = point.x + numbers[ j + 0 ];
  285. control.y = point.y + numbers[ j + 1 ];
  286. point.x += numbers[ j + 2 ];
  287. point.y += numbers[ j + 3 ];
  288. }
  289. break;
  290. case 'q':
  291. var numbers = parseFloats( data );
  292. for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
  293. path.quadraticCurveTo(
  294. point.x + numbers[ j + 0 ],
  295. point.y + numbers[ j + 1 ],
  296. point.x + numbers[ j + 2 ],
  297. point.y + numbers[ j + 3 ]
  298. );
  299. control.x = point.x + numbers[ j + 0 ];
  300. control.y = point.y + numbers[ j + 1 ];
  301. point.x += numbers[ j + 2 ];
  302. point.y += numbers[ j + 3 ];
  303. }
  304. break;
  305. case 't':
  306. var numbers = parseFloats( data );
  307. for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
  308. var rx = getReflection( point.x, control.x );
  309. var ry = getReflection( point.y, control.y );
  310. path.quadraticCurveTo(
  311. rx,
  312. ry,
  313. point.x + numbers[ j + 0 ],
  314. point.y + numbers[ j + 1 ]
  315. );
  316. control.x = rx;
  317. control.y = ry;
  318. point.x = point.x + numbers[ j + 0 ];
  319. point.y = point.y + numbers[ j + 1 ];
  320. }
  321. break;
  322. case 'a':
  323. var numbers = parseFloats( data );
  324. for ( var j = 0, jl = numbers.length; j < jl; j += 7 ) {
  325. var start = point.clone();
  326. point.x += numbers[ j + 5 ];
  327. point.y += numbers[ j + 6 ];
  328. control.x = point.x;
  329. control.y = point.y;
  330. parseArcCommand(
  331. path, numbers[ j ], numbers[ j + 1 ], numbers[ j + 2 ], numbers[ j + 3 ], numbers[ j + 4 ], start, point
  332. );
  333. }
  334. break;
  335. //
  336. case 'Z':
  337. case 'z':
  338. path.currentPath.autoClose = true;
  339. if ( path.currentPath.curves.length > 0 ) {
  340. // Reset point to beginning of Path
  341. point.copy( firstPoint );
  342. path.currentPath.currentPoint.copy( point );
  343. isFirstPoint = true;
  344. }
  345. break;
  346. default:
  347. console.warn( command );
  348. }
  349. // console.log( type, parseFloats( data ), parseFloats( data ).length )
  350. if ( doSetFirstPoint ) {
  351. firstPoint.copy( point );
  352. doSetFirstPoint = false;
  353. }
  354. }
  355. return path;
  356. }
  357. /**
  358. * https://www.w3.org/TR/SVG/implnote.html#ArcImplementationNotes
  359. * https://mortoray.com/2017/02/16/rendering-an-svg-elliptical-arc-as-bezier-curves/ Appendix: Endpoint to center arc conversion
  360. * From
  361. * rx ry x-axis-rotation large-arc-flag sweep-flag x y
  362. * To
  363. * aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation
  364. */
  365. function parseArcCommand( path, rx, ry, x_axis_rotation, large_arc_flag, sweep_flag, start, end ) {
  366. x_axis_rotation = x_axis_rotation * Math.PI / 180;
  367. // Ensure radii are positive
  368. rx = Math.abs( rx );
  369. ry = Math.abs( ry );
  370. // Compute (x1′, y1′)
  371. var dx2 = ( start.x - end.x ) / 2.0;
  372. var dy2 = ( start.y - end.y ) / 2.0;
  373. var x1p = Math.cos( x_axis_rotation ) * dx2 + Math.sin( x_axis_rotation ) * dy2;
  374. var y1p = - Math.sin( x_axis_rotation ) * dx2 + Math.cos( x_axis_rotation ) * dy2;
  375. // Compute (cx′, cy′)
  376. var rxs = rx * rx;
  377. var rys = ry * ry;
  378. var x1ps = x1p * x1p;
  379. var y1ps = y1p * y1p;
  380. // Ensure radii are large enough
  381. var cr = x1ps / rxs + y1ps / rys;
  382. if ( cr > 1 ) {
  383. // scale up rx,ry equally so cr == 1
  384. var s = Math.sqrt( cr );
  385. rx = s * rx;
  386. ry = s * ry;
  387. rxs = rx * rx;
  388. rys = ry * ry;
  389. }
  390. var dq = ( rxs * y1ps + rys * x1ps );
  391. var pq = ( rxs * rys - dq ) / dq;
  392. var q = Math.sqrt( Math.max( 0, pq ) );
  393. if ( large_arc_flag === sweep_flag ) q = - q;
  394. var cxp = q * rx * y1p / ry;
  395. var cyp = - q * ry * x1p / rx;
  396. // Step 3: Compute (cx, cy) from (cx′, cy′)
  397. var cx = Math.cos( x_axis_rotation ) * cxp - Math.sin( x_axis_rotation ) * cyp + ( start.x + end.x ) / 2;
  398. var cy = Math.sin( x_axis_rotation ) * cxp + Math.cos( x_axis_rotation ) * cyp + ( start.y + end.y ) / 2;
  399. // Step 4: Compute θ1 and Δθ
  400. var theta = svgAngle( 1, 0, ( x1p - cxp ) / rx, ( y1p - cyp ) / ry );
  401. var delta = svgAngle( ( x1p - cxp ) / rx, ( y1p - cyp ) / ry, ( - x1p - cxp ) / rx, ( - y1p - cyp ) / ry ) % ( Math.PI * 2 );
  402. path.currentPath.absellipse( cx, cy, rx, ry, theta, theta + delta, sweep_flag === 0, x_axis_rotation );
  403. }
  404. function svgAngle( ux, uy, vx, vy ) {
  405. var dot = ux * vx + uy * vy;
  406. var len = Math.sqrt( ux * ux + uy * uy ) * Math.sqrt( vx * vx + vy * vy );
  407. var ang = Math.acos( Math.max( -1, Math.min( 1, dot / len ) ) ); // floating point precision, slightly over values appear
  408. if ( ( ux * vy - uy * vx ) < 0 ) ang = - ang;
  409. return ang;
  410. }
  411. /*
  412. * According to https://www.w3.org/TR/SVG/shapes.html#RectElementRXAttribute
  413. * rounded corner should be rendered to elliptical arc, but bezier curve does the job well enough
  414. */
  415. function parseRectNode( node, style ) {
  416. var x = parseFloat( node.getAttribute( 'x' ) || 0 );
  417. var y = parseFloat( node.getAttribute( 'y' ) || 0 );
  418. var rx = parseFloat( node.getAttribute( 'rx' ) || 0 );
  419. var ry = parseFloat( node.getAttribute( 'ry' ) || 0 );
  420. var w = parseFloat( node.getAttribute( 'width' ) );
  421. var h = parseFloat( node.getAttribute( 'height' ) );
  422. var path = new THREE.ShapePath();
  423. path.color.setStyle( style.fill );
  424. path.moveTo( x + 2 * rx, y );
  425. path.lineTo( x + w - 2 * rx, y );
  426. if ( rx !== 0 || ry !== 0 ) path.bezierCurveTo( x + w, y, x + w, y, x + w, y + 2 * ry );
  427. path.lineTo( x + w, y + h - 2 * ry );
  428. if ( rx !== 0 || ry !== 0 ) path.bezierCurveTo( x + w, y + h, x + w, y + h, x + w - 2 * rx, y + h );
  429. path.lineTo( x + 2 * rx, y + h );
  430. if ( rx !== 0 || ry !== 0 ) {
  431. path.bezierCurveTo( x, y + h, x, y + h, x, y + h - 2 * ry );
  432. }
  433. path.lineTo( x, y + 2 * ry );
  434. if ( rx !== 0 || ry !== 0 ) {
  435. path.bezierCurveTo( x, y, x, y, x + 2 * rx, y );
  436. }
  437. return path;
  438. }
  439. function parsePolygonNode( node, style ) {
  440. function iterator( match, a, b ) {
  441. var x = parseFloat( a );
  442. var y = parseFloat( b );
  443. if ( index === 0 ) {
  444. path.moveTo( x, y );
  445. } else {
  446. path.lineTo( x, y );
  447. }
  448. index ++;
  449. }
  450. var regex = /(-?[\d\.?]+)[,|\s](-?[\d\.?]+)/g;
  451. var path = new THREE.ShapePath();
  452. path.color.setStyle( style.fill );
  453. var index = 0;
  454. node.getAttribute( 'points' ).replace(regex, iterator);
  455. path.currentPath.autoClose = true;
  456. return path;
  457. }
  458. function parsePolylineNode( node, style ) {
  459. function iterator( match, a, b ) {
  460. var x = parseFloat( a );
  461. var y = parseFloat( b );
  462. if ( index === 0 ) {
  463. path.moveTo( x, y );
  464. } else {
  465. path.lineTo( x, y );
  466. }
  467. index ++;
  468. }
  469. var regex = /(-?[\d\.?]+)[,|\s](-?[\d\.?]+)/g;
  470. var path = new THREE.ShapePath();
  471. path.color.setStyle( style.fill );
  472. var index = 0;
  473. node.getAttribute( 'points' ).replace(regex, iterator);
  474. path.currentPath.autoClose = false;
  475. return path;
  476. }
  477. function parseCircleNode( node, style ) {
  478. var x = parseFloat( node.getAttribute( 'cx' ) );
  479. var y = parseFloat( node.getAttribute( 'cy' ) );
  480. var r = parseFloat( node.getAttribute( 'r' ) );
  481. var subpath = new THREE.Path();
  482. subpath.absarc( x, y, r, 0, Math.PI * 2 );
  483. var path = new THREE.ShapePath();
  484. path.color.setStyle( style.fill );
  485. path.subPaths.push( subpath );
  486. return path;
  487. }
  488. function parseEllipseNode( node, style ) {
  489. var x = parseFloat( node.getAttribute( 'cx' ) );
  490. var y = parseFloat( node.getAttribute( 'cy' ) );
  491. var rx = parseFloat( node.getAttribute( 'rx' ) );
  492. var ry = parseFloat( node.getAttribute( 'ry' ) );
  493. var subpath = new THREE.Path();
  494. subpath.absellipse( x, y, rx, ry, 0, Math.PI * 2 );
  495. var path = new THREE.ShapePath();
  496. path.color.setStyle( style.fill );
  497. path.subPaths.push( subpath );
  498. return path;
  499. }
  500. function parseLineNode( node, style ) {
  501. var x1 = parseFloat( node.getAttribute( 'x1' ) );
  502. var y1 = parseFloat( node.getAttribute( 'y1' ) );
  503. var x2 = parseFloat( node.getAttribute( 'x2' ) );
  504. var y2 = parseFloat( node.getAttribute( 'y2' ) );
  505. var path = new THREE.ShapePath();
  506. path.moveTo( x1, y1 );
  507. path.lineTo( x2, y2 );
  508. path.currentPath.autoClose = false;
  509. return path;
  510. }
  511. //
  512. function parseStyle( node, style ) {
  513. style = Object.assign( {}, style ); // clone style
  514. if ( node.hasAttribute( 'fill' ) ) style.fill = node.getAttribute( 'fill' );
  515. if ( node.style.fill !== '' ) style.fill = node.style.fill;
  516. return style;
  517. }
  518. function isVisible( style ) {
  519. return style.fill !== 'none' && style.fill !== 'transparent';
  520. }
  521. // http://www.w3.org/TR/SVG11/implnote.html#PathElementImplementationNotes
  522. function getReflection( a, b ) {
  523. return a - ( b - a );
  524. }
  525. function parseFloats( string ) {
  526. var array = string.split( /[\s,]+|(?=\s?[+\-])/ );
  527. for ( var i = 0; i < array.length; i ++ ) {
  528. var number = array[ i ];
  529. // Handle values like 48.6037.7.8
  530. // TODO Find a regex for this
  531. if ( number.indexOf( '.' ) !== number.lastIndexOf( '.' ) ) {
  532. var split = number.split( '.' );
  533. for ( var s = 2; s < split.length; s ++ ) {
  534. array.splice( i + s - 1, 0, '0.' + split[ s ] );
  535. }
  536. }
  537. array[ i ] = parseFloat( number );
  538. }
  539. return array;
  540. }
  541. function getNodeTransform( node ) {
  542. if ( ! node.hasAttribute( 'transform' ) ) {
  543. return null;
  544. }
  545. var transform = parseTransformNode( node );
  546. if ( transform ) {
  547. if ( transformStack.length > 0 ) {
  548. transform.premultiply( transformStack[ transformStack.length - 1 ] );
  549. }
  550. currentTransform.copy( transform );
  551. transformStack.push( transform );
  552. }
  553. return transform;
  554. }
  555. function parseTransformNode( node ) {
  556. var transformAttr = node.getAttribute( 'transform' );
  557. var transform = null;
  558. var openParPos = transformAttr.indexOf( "(" );
  559. var closeParPos = transformAttr.indexOf( ")" );
  560. if ( openParPos > 0 && openParPos < closeParPos ) {
  561. var transformType = transformAttr.substr( 0, openParPos );
  562. var array = parseFloats( transformAttr.substr( openParPos + 1, closeParPos - openParPos - 1 ) );
  563. switch ( transformType ) {
  564. case "translate":
  565. if ( array.length >= 1 ) {
  566. transform = new THREE.Matrix3();
  567. var tx = array[ 0 ];
  568. var ty = tx;
  569. if ( array.length >= 2 ) {
  570. ty = array[ 1 ];
  571. }
  572. transform.translate( tx, ty );
  573. }
  574. break;
  575. case "rotate":
  576. if ( array.length >= 1 ) {
  577. var angle = 0;
  578. var cx = 0;
  579. var cy = 0;
  580. transform = new THREE.Matrix3();
  581. // Angle
  582. angle = - array[ 0 ] * Math.PI / 180;
  583. if ( array.length >= 3 ) {
  584. // Center x, y
  585. cx = array[ 1 ];
  586. cy = array[ 2 ];
  587. }
  588. // Rotate around center (cx, cy)
  589. tempTransform1.identity().translate( -cx, -cy );
  590. tempTransform2.identity().rotate( angle );
  591. tempTransform3.multiplyMatrices( tempTransform2, tempTransform1 );
  592. tempTransform1.identity().translate( cx, cy );
  593. transform.multiplyMatrices( tempTransform1, tempTransform3 );
  594. }
  595. break;
  596. case "scale":
  597. if ( array.length >= 1 ) {
  598. transform = new THREE.Matrix3();
  599. var scaleX = array[ 0 ];
  600. var scaleY = scaleX;
  601. if ( array.length >= 2 ) {
  602. scaleY = array[ 1 ];
  603. }
  604. transform.scale( scaleX, scaleY );
  605. }
  606. break;
  607. case "skewX":
  608. if ( array.length === 1 ) {
  609. transform = new THREE.Matrix3();
  610. transform.set(
  611. 1, Math.tan( array[ 0 ] * Math.PI / 180 ), 0,
  612. 0, 1, 0,
  613. 0, 0, 1
  614. );
  615. }
  616. break;
  617. case "skewY":
  618. if ( array.length === 1 ) {
  619. transform = new THREE.Matrix3();
  620. transform.set(
  621. 1, 0, 0,
  622. Math.tan( array[ 0 ] * Math.PI / 180 ), 1, 0,
  623. 0, 0, 1
  624. );
  625. }
  626. break;
  627. case "matrix":
  628. if ( array.length === 6 ) {
  629. transform = new THREE.Matrix3();
  630. transform.set(
  631. array[ 0 ], array[ 2 ], array[ 4 ],
  632. array[ 1 ], array[ 3 ], array[ 5 ],
  633. 0, 0, 1
  634. );
  635. }
  636. break;
  637. }
  638. }
  639. return transform;
  640. }
  641. function transformPath( path, m ) {
  642. function transfVec2( v2 ) {
  643. tempV3.set( v2.x, v2.y, 1 ).applyMatrix3( m );
  644. v2.set( tempV3.x, tempV3.y );
  645. }
  646. var isRotated = isTransformRotated( m );
  647. var tempV2 = new THREE.Vector2();
  648. var tempV3 = new THREE.Vector3();
  649. var subPaths = path.subPaths;
  650. for ( var i = 0, n = subPaths.length; i < n; i++ ) {
  651. var subPath = subPaths[ i ];
  652. var curves = subPath.curves;
  653. for ( var j = 0; j < curves.length; j++ ) {
  654. var curve = curves[ j ];
  655. if ( curve.isLineCurve ) {
  656. transfVec2( curve.v1 );
  657. transfVec2( curve.v2 );
  658. } else if ( curve.isCubicBezierCurve ) {
  659. transfVec2( curve.v0 );
  660. transfVec2( curve.v1 );
  661. transfVec2( curve.v2 );
  662. transfVec2( curve.v3 );
  663. } else if ( curve.isQuadraticBezierCurve ) {
  664. transfVec2( curve.v0 );
  665. transfVec2( curve.v1 );
  666. transfVec2( curve.v2 );
  667. } else if ( curve.isEllipseCurve ) {
  668. if ( isRotated ) {
  669. console.warn( "SVGLoader: Elliptic arc or ellipse rotation or skewing is not implemented." );
  670. }
  671. tempV2.set( curve.aX, curve.aY );
  672. transfVec2( tempV2 );
  673. curve.aX = tempV2.x;
  674. curve.aY = tempV2.y;
  675. curve.xRadius *= getTransformScaleX( m );
  676. curve.yRadius *= getTransformScaleY( m );
  677. }
  678. }
  679. }
  680. }
  681. function isTransformRotated( m ) {
  682. return m.elements[ 1 ] !== 0 || m.elements[ 3 ] !== 0;
  683. }
  684. function getTransformScaleX( m ) {
  685. var te = m.elements;
  686. return Math.sqrt( te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] )
  687. }
  688. function getTransformScaleY( m ) {
  689. var te = m.elements;
  690. return Math.sqrt( te[ 3 ] * te[ 3 ] + te[ 4 ] * te[ 4 ] )
  691. }
  692. //
  693. console.log( 'THREE.SVGLoader' );
  694. var paths = [];
  695. var transformStack = [];
  696. var tempTransform1 = new THREE.Matrix3();
  697. var tempTransform2 = new THREE.Matrix3();
  698. var tempTransform3 = new THREE.Matrix3();
  699. var currentTransform = new THREE.Matrix3();
  700. console.time( 'THREE.SVGLoader: DOMParser' );
  701. var xml = new DOMParser().parseFromString( text, 'image/svg+xml' ); // application/xml
  702. console.timeEnd( 'THREE.SVGLoader: DOMParser' );
  703. console.time( 'THREE.SVGLoader: Parse' );
  704. parseNode( xml.documentElement, { fill: '#000' } );
  705. // console.log( paths );
  706. console.timeEnd( 'THREE.SVGLoader: Parse' );
  707. return paths;
  708. }
  709. };