12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148 |
- /**
- * @author mrdoob / http://mrdoob.com/
- * @author zz85 / http://joshuakoo.com/
- */
- THREE.SVGLoader = function ( manager ) {
- this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
- };
- THREE.SVGLoader.prototype = {
- constructor: THREE.SVGLoader,
- load: function ( url, onLoad, onProgress, onError ) {
- var scope = this;
- var loader = new THREE.FileLoader( scope.manager );
- loader.load( url, function ( text ) {
- onLoad( scope.parse( text ) );
- }, onProgress, onError );
- },
- parse: function ( text ) {
- function parseNode( node, style ) {
- if ( node.nodeType !== 1 ) return;
- var transform = null;
- if ( node.hasAttribute( 'transform' ) ) {
- transform = parseTransformNode( node );
- if ( transform ) {
- if ( transformStack.length > 0 ) {
- multiplyTransforms( transform, transformStack[ transformStack.length - 1 ], tempTransform );
- copyTransform( tempTransform, transform );
- }
- copyTransform( transform, currentTransform );
- transformStack.push( transform );
- }
-
- }
- switch ( node.nodeName ) {
- case 'svg':
- break;
- case 'g':
- style = parseStyle( node, style );
- break;
- case 'path':
- style = parseStyle( node, style );
- if ( node.hasAttribute( 'd' ) && isVisible( style ) ) paths.push( parsePathNode( node, style ) );
- break;
- case 'rect':
- style = parseStyle( node, style );
- if ( isVisible( style ) ) paths.push( parseRectNode( node, style ) );
- break;
- case 'polygon':
- style = parseStyle( node, style );
- if ( isVisible( style ) ) paths.push( parsePolygonNode( node, style ) );
- break;
- case 'polyline':
- style = parseStyle( node, style );
- if ( isVisible( style ) ) paths.push( parsePolylineNode( node, style ) );
- break;
- case 'circle':
- style = parseStyle( node, style );
- if ( isVisible( style ) ) paths.push( parseCircleNode( node, style ) );
- break;
- case 'ellipse':
- style = parseStyle( node, style );
- if ( isVisible( style ) ) paths.push( parseEllipseNode( node, style ) );
- break;
- case 'line':
- style = parseStyle( node, style );
- if ( isVisible( style ) ) paths.push( parseLineNode( node, style ) );
- break;
- default:
- console.log( node );
- }
- var nodes = node.childNodes;
- for ( var i = 0; i < nodes.length; i ++ ) {
- parseNode( nodes[ i ], style );
- }
- if ( transform ) {
- copyTransform( transformStack.pop(), currentTransform );
- }
- }
- function parsePathNode( node, style ) {
- var path = new THREE.ShapePath();
- path.color.setStyle( style.fill );
- var point = new THREE.Vector2();
- var control = new THREE.Vector2();
- var control2 = new THREE.Vector2();
- var transfPoint = new THREE.Vector2();
- var transfControl = new THREE.Vector2();
- var transfControl2 = new THREE.Vector2();
- var reflected = new THREE.Vector2();
- var firstPoint = new THREE.Vector2();
- var isFirstPoint = true;
- function setFirstPoint() {
- if ( isFirstPoint ) {
- firstPoint.x = point.x;
- firstPoint.y = point.y;
- isFirstPoint = false;
- }
- }
- var d = node.getAttribute( 'd' );
- // console.log( d );
- var commands = d.match( /[a-df-z][^a-df-z]*/ig );
- for ( var i = 0, l = commands.length; i < l; i ++ ) {
- var command = commands[ i ];
- var type = command.charAt( 0 );
- var data = command.substr( 1 ).trim();
- switch ( type ) {
- case 'M':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
- point.x = numbers[ j + 0 ];
- point.y = numbers[ j + 1 ];
- control.x = point.x;
- control.y = point.y;
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- if ( j === 0 ) {
- path.moveTo( transfPoint.x, transfPoint.y );
- }
- else {
- path.lineTo( transfPoint.x, transfPoint.y );
- }
- }
- break;
- case 'H':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j ++ ) {
- point.x = numbers[ j ];
- control.x = point.x;
- control.y = point.y;
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- path.lineTo( transfPoint.x, transfPoint.y );
- }
- break;
- case 'V':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j ++ ) {
- point.y = numbers[ j ];
- control.x = point.x;
- control.y = point.y;
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- path.lineTo( transfPoint.x, transfPoint.y );
- }
- break;
- case 'L':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
- point.x = numbers[ j + 0 ];
- point.y = numbers[ j + 1 ];
- control.x = point.x;
- control.y = point.y;
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- path.lineTo( transfPoint.x, transfPoint.y );
- }
- break;
- case 'C':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 6 ) {
- control2.set( numbers[ j + 0 ], numbers[ j + 1 ] );
- control.set( numbers[ j + 2 ], numbers[ j + 3 ] );
- point.set( numbers[ j + 4 ], numbers[ j + 5 ] );
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- transfVec2( control2, currentTransform, transfControl2 );
- setFirstPoint();
- path.bezierCurveTo(
- transfControl2.x,
- transfControl2.y,
- transfControl.x,
- transfControl.y,
- transfPoint.x,
- transfPoint.y
- );
- }
- break;
- case 'S':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
- reflected.set(
- getReflection( transfPoint.x, transfControl.x ),
- getReflection( transfPoint.y, transfControl.y )
- );
- control.set( numbers[ j + 0 ], numbers[ j + 1 ] );
- point.set( numbers[ j + 2 ], numbers[ j + 3 ] );
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- path.bezierCurveTo(
- reflected.x,
- reflected.y,
- transfControl.x,
- transfControl.y,
- transfPoint.x,
- transfPoint.y
- );
- }
- break;
- case 'Q':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
- control.set( numbers[ j + 0 ], numbers[ j + 1 ] );
- point.set( numbers[ j + 2 ], numbers[ j + 3 ] );
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- path.quadraticCurveTo(
- transfControl.x,
- transfControl.y,
- transfPoint.x,
- transfPoint.y
- );
- }
- break;
- case 'T':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
- reflected.set(
- getReflection( transfPoint.x, transfControl.x ),
- getReflection( transfPoint.y, transfControl.y )
- );
- control.set( reflected.x, reflected.y );
- point.set( numbers[ j + 0 ], numbers[ j + 1 ] );
- transfVec2( point, currentTransform, transfPoint );
- setFirstPoint();
- path.quadraticCurveTo(
- reflected.x,
- reflected.y,
- transfPoint.x,
- transfPoint.y
- );
- }
- break;
- case 'A':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 7 ) {
- var transfStart = transfPoint.clone();
- point.set( numbers[ j + 5 ], numbers[ j + 6 ] );
- control.x = point.x;
- control.y = point.y;
- transfVec2( point, currentTransform, transfPoint );
- setFirstPoint();
- var rx = numbers[ j + 0 ] * getTransformScaleX( currentTransform );
- var ry = numbers[ j + 1 ] * getTransformScaleX( currentTransform );
- if ( isTransformRotated( currentTransform ) && rx !== ry ) {
- console.warn( "SVGLoader: Elliptic arc rotation or skewing is not implemented." );
- }
- parseArcCommand(
- path,
- rx,
- ry,
- numbers[ j + 2 ],
- numbers[ j + 3 ],
- numbers[ j + 4 ],
- transfStart,
- transfPoint
- );
- }
- break;
- //
- case 'm':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
- point.x += numbers[ j + 0 ];
- point.y += numbers[ j + 1 ];
- control.x = point.x;
- control.y = point.y;
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- if ( j === 0 ) {
- path.moveTo( transfPoint.x, transfPoint.y );
- }
- else {
- path.lineTo( transfPoint.x, transfPoint.y );
- }
- }
- break;
- case 'h':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j ++ ) {
- point.x += numbers[ j ];
- control.x = point.x;
- control.y = point.y;
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- path.lineTo( transfPoint.x, transfPoint.y );
- }
- break;
- case 'v':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j ++ ) {
- point.y += numbers[ j ];
- control.x = point.x;
- control.y = point.y;
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- path.lineTo( transfPoint.x, transfPoint.y );
- }
- break;
- case 'l':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
- point.x += numbers[ j + 0 ];
- point.y += numbers[ j + 1 ];
- control.x = point.x;
- control.y = point.y;
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- path.lineTo( transfPoint.x, transfPoint.y );
- }
- break;
- case 'c':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 6 ) {
- control2.set( point.x + numbers[ j + 0 ], point.y + numbers[ j + 1 ] );
- control.set( point.x + numbers[ j + 2 ], point.y + numbers[ j + 3 ] );
- point.x += numbers[ j + 4 ];
- point.y += numbers[ j + 5 ];
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- transfVec2( control2, currentTransform, transfControl2 );
- setFirstPoint();
- path.bezierCurveTo(
- transfControl2.x,
- transfControl2.y,
- transfControl.x,
- transfControl.y,
- transfPoint.x,
- transfPoint.y
- );
- }
- break;
- case 's':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
- reflected.set(
- getReflection( transfPoint.x, transfControl.x ),
- getReflection( transfPoint.y, transfControl.y )
- );
- control.set( point.x + numbers[ j + 0 ], point.y + numbers[ j + 1 ] );
- point.x += numbers[ j + 2 ];
- point.y += numbers[ j + 3 ];
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- path.bezierCurveTo(
- reflected.x,
- reflected.y,
- transfControl.x,
- transfControl.y,
- transfPoint.x,
- transfPoint.y
- );
- }
- break;
- case 'q':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
- control.set( point.x + numbers[ j + 0 ], point.y + numbers[ j + 1 ] );
- point.x += numbers[ j + 2 ];
- point.y += numbers[ j + 3 ];
- transfVec2( point, currentTransform, transfPoint );
- transfVec2( control, currentTransform, transfControl );
- setFirstPoint();
- path.quadraticCurveTo(
- transfControl.x,
- transfControl.y,
- transfPoint.x,
- transfPoint.y
- );
- }
- break;
- case 't':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
- reflected.set(
- getReflection( transfPoint.x, transfControl.x ),
- getReflection( transfPoint.y, transfControl.y )
- );
- control.set( reflected.x, reflected.y );
- point.x += numbers[ j + 0 ];
- point.y += numbers[ j + 1 ];
- transfVec2( point, currentTransform, transfPoint );
- setFirstPoint();
- path.quadraticCurveTo(
- reflected.x,
- reflected.y,
- transfPoint.x,
- transfPoint.y
- );
- }
- break;
- case 'a':
- var numbers = parseFloats( data );
- for ( var j = 0, jl = numbers.length; j < jl; j += 7 ) {
- var transfStart = transfPoint.clone();
- point.x += numbers[ j + 5 ];
- point.y += numbers[ j + 6 ];
- control.x = point.x;
- control.y = point.y;
- transfVec2( point, currentTransform, transfPoint );
- setFirstPoint();
- var rx = numbers[ j + 0 ] * getTransformScaleX( currentTransform );
- var ry = numbers[ j + 1 ] * getTransformScaleX( currentTransform );
- if ( isTransformRotated( currentTransform ) && rx !== ry ) {
- console.warn( "SVGLoader: Elliptic arc rotation or skewing is not implemented." );
- }
- parseArcCommand(
- path,
- rx,
- ry,
- numbers[ j + 2 ],
- numbers[ j + 3 ],
- numbers[ j + 4 ],
- transfStart,
- transfPoint
- );
- }
- break;
- //
- case 'Z':
- case 'z':
- path.currentPath.autoClose = true;
- if ( path.currentPath.curves.length > 0 ) {
- // Reset point to beginning of Path
- point.x = firstPoint.x;
- point.y = firstPoint.y;
- transfVec2( point, currentTransform, transfPoint );
- path.currentPath.currentPoint.copy( transfPoint );
- isFirstPoint = true;
- }
- break;
- default:
- console.warn( command );
- }
- // console.log( type, parseFloats( data ), parseFloats( data ).length )
- }
- return path;
- }
- /**
- * https://www.w3.org/TR/SVG/implnote.html#ArcImplementationNotes
- * https://mortoray.com/2017/02/16/rendering-an-svg-elliptical-arc-as-bezier-curves/ Appendix: Endpoint to center arc conversion
- * From
- * rx ry x-axis-rotation large-arc-flag sweep-flag x y
- * To
- * aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation
- */
- function parseArcCommand( path, rx, ry, x_axis_rotation, large_arc_flag, sweep_flag, start, end ) {
- x_axis_rotation = x_axis_rotation * Math.PI / 180;
- // Ensure radii are positive
- rx = Math.abs( rx );
- ry = Math.abs( ry );
- // Compute (x1′, y1′)
- var dx2 = ( start.x - end.x ) / 2.0;
- var dy2 = ( start.y - end.y ) / 2.0;
- var x1p = Math.cos( x_axis_rotation ) * dx2 + Math.sin( x_axis_rotation ) * dy2;
- var y1p = - Math.sin( x_axis_rotation ) * dx2 + Math.cos( x_axis_rotation ) * dy2;
- // Compute (cx′, cy′)
- var rxs = rx * rx;
- var rys = ry * ry;
- var x1ps = x1p * x1p;
- var y1ps = y1p * y1p;
- // Ensure radii are large enough
- var cr = x1ps / rxs + y1ps / rys;
- if ( cr > 1 ) {
- // scale up rx,ry equally so cr == 1
- var s = Math.sqrt( cr );
- rx = s * rx;
- ry = s * ry;
- rxs = rx * rx;
- rys = ry * ry;
- }
- var dq = ( rxs * y1ps + rys * x1ps );
- var pq = ( rxs * rys - dq ) / dq;
- var q = Math.sqrt( Math.max( 0, pq ) );
- if ( large_arc_flag === sweep_flag ) q = - q;
- var cxp = q * rx * y1p / ry;
- var cyp = - q * ry * x1p / rx;
- // Step 3: Compute (cx, cy) from (cx′, cy′)
- var cx = Math.cos( x_axis_rotation ) * cxp - Math.sin( x_axis_rotation ) * cyp + ( start.x + end.x ) / 2;
- var cy = Math.sin( x_axis_rotation ) * cxp + Math.cos( x_axis_rotation ) * cyp + ( start.y + end.y ) / 2;
- // Step 4: Compute θ1 and Δθ
- var theta = svgAngle( 1, 0, ( x1p - cxp ) / rx, ( y1p - cyp ) / ry );
- var delta = svgAngle( ( x1p - cxp ) / rx, ( y1p - cyp ) / ry, ( - x1p - cxp ) / rx, ( - y1p - cyp ) / ry ) % ( Math.PI * 2 );
- path.currentPath.absellipse( cx, cy, rx, ry, theta, theta + delta, sweep_flag === 0, x_axis_rotation );
- }
- function svgAngle( ux, uy, vx, vy ) {
- var dot = ux * vx + uy * vy;
- var len = Math.sqrt( ux * ux + uy * uy ) * Math.sqrt( vx * vx + vy * vy );
- var ang = Math.acos( Math.max( -1, Math.min( 1, dot / len ) ) ); // floating point precision, slightly over values appear
- if ( ( ux * vy - uy * vx ) < 0 ) ang = - ang;
- return ang;
- }
- /*
- * According to https://www.w3.org/TR/SVG/shapes.html#RectElementRXAttribute
- * rounded corner should be rendered to elliptical arc, but bezier curve does the job well enough
- */
- function parseRectNode( node, style ) {
- var x = parseFloat( node.getAttribute( 'x' ) || 0 );
- var y = parseFloat( node.getAttribute( 'y' ) || 0 );
- var rx = parseFloat( node.getAttribute( 'rx' ) || 0 );
- var ry = parseFloat( node.getAttribute( 'ry' ) || 0 );
- var w = parseFloat( node.getAttribute( 'width' ) );
- var h = parseFloat( node.getAttribute( 'height' ) );
- var path = new THREE.ShapePath();
- path.color.setStyle( style.fill );
-
- tempVecA.set( x + 2 * rx, y );
- transfVec2( tempVecA, currentTransform, tempVecB );
- path.moveTo( tempVecB.x, tempVecB.y );
- tempVecA.set( x + w - 2 * rx, y );
- transfVec2( tempVecA, currentTransform, tempVecB );
- path.lineTo( tempVecB.x, tempVecB.y );
- if ( rx !== 0 || ry !== 0 ) {
- tempVecA.set( x + w, y );
- transfVec2( tempVecA, currentTransform, tempVecB );
- tempVecA.set( x + w, y + 2 * ry );
- transfVec2( tempVecA, currentTransform, tempVecC );
- path.bezierCurveTo( tempVecB.x, tempVecB.y, tempVecB.x, tempVecB.y, tempVecC.x, tempVecC.y );
- }
-
- tempVecA.set( x + w, y + h - 2 * ry );
- transfVec2( tempVecA, currentTransform, tempVecB );
- path.lineTo( tempVecB.x, tempVecB.y );
- if ( rx !== 0 || ry !== 0 ) {
-
- tempVecA.set( x + w, y + h );
- transfVec2( tempVecA, currentTransform, tempVecB );
- tempVecA.set( x + w - 2 * rx, y + h );
- transfVec2( tempVecA, currentTransform, tempVecC );
- path.bezierCurveTo( tempVecB.x, tempVecB.y, tempVecB.x, tempVecB.y, tempVecC.x, tempVecC.y );
- }
- tempVecA.set( x + 2 * rx, y + h );
- transfVec2( tempVecA, currentTransform, tempVecB );
- path.lineTo( tempVecB.x, tempVecB.y );
- if ( rx !== 0 || ry !== 0 ) {
- tempVecA.set( x, y + h );
- transfVec2( tempVecA, currentTransform, tempVecB );
- tempVecA.set( x, y + h - 2 * ry );
- transfVec2( tempVecA, currentTransform, tempVecC );
- path.bezierCurveTo( tempVecB.x, tempVecB.y, tempVecB.x, tempVecB.y, tempVecC.x, tempVecC.y );
- }
- tempVecA.set( x, y + 2 * ry );
- transfVec2( tempVecA, currentTransform, tempVecB );
- path.lineTo( tempVecB.x, tempVecB.y );
- if ( rx !== 0 || ry !== 0 ) {
- tempVecA.set( x, y );
- transfVec2( tempVecA, currentTransform, tempVecB );
- tempVecA.set( x + 2 * rx, y );
- transfVec2( tempVecA, currentTransform, tempVecC );
- path.bezierCurveTo( tempVecB.x, tempVecB.y, tempVecB.x, tempVecB.y, tempVecC.x, tempVecC.y );
- }
- return path;
- }
- function parsePolygonNode( node, style ) {
- function iterator( match, a, b ) {
- var x = parseFloat( a );
- var y = parseFloat( b );
- tempVecA.set( x, y );
- transfVec2( tempVecA, currentTransform, tempVecB );
- x = tempVecB.x;
- y = tempVecB.y;
- if ( index === 0 ) {
- path.moveTo( x, y );
- } else {
- path.lineTo( x, y );
- }
- index ++;
- }
- var regex = /(-?[\d\.?]+)[,|\s](-?[\d\.?]+)/g;
- var path = new THREE.ShapePath();
- path.color.setStyle( style.fill );
- var index = 0;
- node.getAttribute( 'points' ).replace(regex, iterator);
- path.currentPath.autoClose = true;
- return path;
- }
- function parsePolylineNode( node, style ) {
- function iterator( match, a, b ) {
- var x = parseFloat( a );
- var y = parseFloat( b );
- tempVecA.set( x, y );
- transfVec2( tempVecA, currentTransform, tempVecB );
- x = tempVecB.x;
- y = tempVecB.y;
- if ( index === 0 ) {
- path.moveTo( x, y );
- } else {
- path.lineTo( x, y );
- }
- index ++;
- }
- var regex = /(-?[\d\.?]+)[,|\s](-?[\d\.?]+)/g;
- var path = new THREE.ShapePath();
- path.color.setStyle( style.fill );
- var index = 0;
- node.getAttribute( 'points' ).replace(regex, iterator);
- path.currentPath.autoClose = false;
- return path;
- }
- function parseCircleNode( node, style ) {
- var x = parseFloat( node.getAttribute( 'cx' ) );
- var y = parseFloat( node.getAttribute( 'cy' ) );
- var r = parseFloat( node.getAttribute( 'r' ) );
- // Transform of center
- tempVecA.set( x, y );
- transfVec2( tempVecA, currentTransform, tempVecB );
- x = tempVecB.x;
- y = tempVecB.y;
- // Scale
- var scaleX = getTransformScaleX( currentTransform );
- var scaleY = getTransformScaleY( currentTransform );
- var subpath = new THREE.Path();
- if ( Math.abs( scaleX - scaleY ) > 0.00000001 ) {
- // Circle scaled differently in x and y becomes an ellipse
- // Rotation
- if ( isTransformRotated( currentTransform ) ) {
- console.warn( "SVGLoader: Circle rotation in conjuction with non uniform scaling is not implemented." );
- }
- subpath.absellipse( x, y, r * scaleX, r * scaleY, 0, Math.PI * 2 );
- }
- else {
- subpath.absarc( x, y, r, 0, Math.PI * 2 );
- }
- var path = new THREE.ShapePath();
- path.color.setStyle( style.fill );
- path.subPaths.push( subpath );
- return path;
- }
- function parseEllipseNode( node, style ) {
- var x = parseFloat( node.getAttribute( 'cx' ) );
- var y = parseFloat( node.getAttribute( 'cy' ) );
- var rx = parseFloat( node.getAttribute( 'rx' ) );
- var ry = parseFloat( node.getAttribute( 'ry' ) );
- // Transform of center
- tempVecA.set( x, y );
- transfVec2( tempVecA, currentTransform, tempVecB );
- x = tempVecB.x;
- y = tempVecB.y;
- // Rotation
- if ( isTransformRotated( currentTransform ) ) {
- console.warn( "SVGLoader: Ellipse rotation or skewing is not implemented." );
- }
- // Scale
- rx *= getTransformScaleX( currentTransform );
- ry *= getTransformScaleY( currentTransform );
- var subpath = new THREE.Path();
- subpath.absellipse( x, y, rx, ry, 0, Math.PI * 2 );
- var path = new THREE.ShapePath();
- path.color.setStyle( style.fill );
- path.subPaths.push( subpath );
- return path;
- }
- function parseLineNode( node, style ) {
- var x1 = parseFloat( node.getAttribute( 'x1' ) );
- var y1 = parseFloat( node.getAttribute( 'y1' ) );
- var x2 = parseFloat( node.getAttribute( 'x2' ) );
- var y2 = parseFloat( node.getAttribute( 'y2' ) );
-
- tempVecA.set( x1, y1 );
- transfVec2( tempVecA, currentTransform, tempVecB );
- x1 = tempVecB.x;
- y1 = tempVecB.y;
- tempVecA.set( x2, y2 );
- transfVec2( tempVecA, currentTransform, tempVecB );
- x2 = tempVecB.x;
- y2 = tempVecB.y;
- var path = new THREE.ShapePath();
- path.moveTo( x1, y1 );
- path.lineTo( x2, y2 );
- path.currentPath.autoClose = false;
- return path;
- }
- //
- function parseStyle( node, style ) {
- style = Object.assign( {}, style ); // clone style
- if ( node.hasAttribute( 'fill' ) ) style.fill = node.getAttribute( 'fill' );
- if ( node.style.fill !== '' && node.style.fill !== 'none' ) style.fill = node.style.fill;
- if ( ! isVisible( style ) ) {
- if ( node.hasAttribute( 'stroke' ) ) style.fill = node.getAttribute( 'stroke' );
- if ( node.style.stroke !== '' && node.style.stroke !== 'none' ) style.fill = node.style.stroke;
- }
- return style;
- }
- function isVisible( style ) {
- return ( style.fill !== 'none' && style.fill !== 'transparent' ) || ( style.stroke !== 'none' && style.stroke !== 'transparent' );
- }
- // http://www.w3.org/TR/SVG11/implnote.html#PathElementImplementationNotes
- function getReflection( a, b ) {
- return a - ( b - a );
- }
- function parseFloats( string ) {
- var array = string.split( /[\s,]+|(?=\s?[+\-])/ );
- for ( var i = 0; i < array.length; i ++ ) {
- var number = array[ i ];
- // Handle values like 48.6037.7.8
- // TODO Find a regex for this
- if ( number.indexOf( '.' ) !== number.lastIndexOf( '.' ) ) {
- var split = number.split( '.' );
- for ( var s = 2; s < split.length; s ++ ) {
- array.splice( i + s - 1, 0, '0.' + split[ s ] );
- }
- }
- array[ i ] = parseFloat( number );
- }
- return array;
- }
- function parseTransformNode( node ) {
- var transformAttr = node.getAttribute( 'transform' );
- var transform = null;
- var openParPos = transformAttr.indexOf( "(" );
- var closeParPos = transformAttr.indexOf( ")" );
- if ( openParPos > 0 && openParPos < closeParPos ) {
- var transformType = transformAttr.substr( 0, openParPos );
-
- var array = parseFloats( transformAttr.substr( openParPos + 1, closeParPos - openParPos - 1 ) );
- switch ( transformType ) {
-
- case "translate":
- if ( array.length >= 1 ) {
- transform = createIdTransform();
- // Translation X
- transform[ 4 ] = array[ 0 ];
- }
- if ( array.length >= 2 ) {
- // Translation Y
- transform[ 5 ] = array[ 1 ];
- }
- break;
- case "rotate":
- if ( array.length >= 1 ) {
-
- var angle = 0;
- var cx = 0;
- var cy = 0;
- transform = createIdTransform();
- // Angle
- angle = array[ 0 ] * Math.PI / 180;
- if ( array.length >= 3 ) {
- // Center x, y
- cx = array[ 1 ];
- cy = array[ 2 ];
- }
- // Rotate around center (cx, cy)
- var translation = createIdTransform();
- translation[ 4 ] = -cx;
- translation[ 5 ] = -cy;
- var rotation = createRotationTransform( angle );
- var translRot = createIdTransform();
- multiplyTransforms( translation, rotation, translRot );
- translation[ 4 ] = cx;
- translation[ 5 ] = cy;
- multiplyTransforms( translRot, translation, transform );
- }
- break;
- case "scale":
- if ( array.length >= 1 ) {
- transform = createIdTransform();
- var scaleX = array[ 0 ];
- var scaleY = scaleX;
- if ( array.length >= 2 ) {
- scaleY = array[ 1 ];
- }
- transform[ 0 ] = scaleX;
- transform[ 3 ] = scaleY;
- }
- break;
- case "matrix":
- if ( array.length === 6 ) {
- transform = createIdTransform();
- copyTransform( array, transform );
- }
- break;
- }
- }
-
- return transform;
- }
- function createIdTransform( m ) {
- // 2 x 3 matrix:
- // 1 0
- // 0 1
- // tx ty
- if ( ! m ) {
- m = [];
- }
- m[ 0 ] = 1;
- m[ 1 ] = 0;
- m[ 2 ] = 0;
- m[ 3 ] = 1;
- m[ 4 ] = 0;
- m[ 5 ] = 0;
- return m;
- }
- function copyTransform( orig, dest ) {
- for ( var i = 0; i < 6; i++ ) {
- dest[ i ] = orig[ i ]
- }
- }
- function transfVec2( v, m, r ) {
- r.x = v.x * m[ 0 ] + v.y * m[ 2 ] + m[ 4 ];
- r.y = v.x * m[ 1 ] + v.y * m[ 3 ] + m[ 5 ];
- }
- function multiplyTransforms( a, b, r ) {
- r[ 0 ] = a[ 0 ] * b[ 0 ] + a[ 1 ] * b[ 2 ];
- r[ 1 ] = a[ 0 ] * b[ 1 ] + a[ 1 ] * b[ 3 ];
- r[ 2 ] = a[ 2 ] * b[ 0 ] + a[ 3 ] * b[ 2 ];
- r[ 3 ] = a[ 2 ] * b[ 1 ] + a[ 3 ] * b[ 3 ];
- r[ 4 ] = a[ 4 ] * b[ 0 ] + a[ 5 ] * b[ 2 ] + b[ 4 ];
- r[ 5 ] = a[ 4 ] * b[ 1 ] + a[ 5 ] * b[ 3 ] + b[ 5 ];
- }
- function isTransformRotated( m ) {
- return m[ 1 ] !== 0 || m[ 2 ] !== 0;
- }
- function getTransformScaleX( m ) {
- return Math.sqrt( m[ 0 ] * m[ 0 ] + m[ 1 ] * m[ 1 ] )
- }
- function getTransformScaleY( m ) {
- return Math.sqrt( m[ 2 ] * m[ 2 ] + m[ 3 ] * m[ 3 ] )
- }
- function createRotationTransform( angle ) {
- var rotation = createIdTransform();
- var c = Math.cos( angle );
- var s = Math.sin( angle );
- rotation[ 0 ] = c;
- rotation[ 1 ] = s;
- rotation[ 2 ] = - s;
- rotation[ 3 ] = c;
-
- return rotation;
- }
- //
- console.log( 'THREE.SVGLoader' );
- var paths = [];
- var transformStack = [];
- var currentTransform = createIdTransform();
-
- var tempTransform = createIdTransform();
- var tempVecA = new THREE.Vector2();
- var tempVecB = new THREE.Vector2();
- var tempVecC = new THREE.Vector2();
- console.time( 'THREE.SVGLoader: DOMParser' );
- var xml = new DOMParser().parseFromString( text, 'image/svg+xml' ); // application/xml
- console.timeEnd( 'THREE.SVGLoader: DOMParser' );
- console.time( 'THREE.SVGLoader: Parse' );
- parseNode( xml.documentElement, { fill: '#000' } );
- // console.log( paths );
- console.timeEnd( 'THREE.SVGLoader: Parse' );
- return paths;
- }
- };
|