three.js/examples/js/loaders/SVGLoader.js

/**
 * @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 = getNodeTransform( node );

			var path = null;

			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 ) ) path = parsePathNode( node, style );
					break;

				case 'rect':
					style = parseStyle( node, style );
					if ( isVisible( style ) ) path = parseRectNode( node, style );
					break;

				case 'polygon':
					style = parseStyle( node, style );
					if ( isVisible( style ) ) path = parsePolygonNode( node, style );
					break;

				case 'polyline':
					style = parseStyle( node, style );
					if ( isVisible( style ) ) path = parsePolylineNode( node, style );
					break;

				case 'circle':
					style = parseStyle( node, style );
					if ( isVisible( style ) ) path = parseCircleNode( node, style );
					break;

				case 'ellipse':
					style = parseStyle( node, style );
					if ( isVisible( style ) ) path = parseEllipseNode( node, style );
					break;

				case 'line':
					style = parseStyle( node, style );
					if ( isVisible( style ) ) path = parseLineNode( node, style );
					break;

				default:
					console.log( node );

			}

			if ( path ) {

				transformPath( path, currentTransform );

				paths.push( path );

			}

			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 firstPoint = new THREE.Vector2();
			var isFirstPoint = true;
			var doSetFirstPoint = 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();

				if ( isFirstPoint ) {
					doSetFirstPoint = true;
				}
				isFirstPoint = false;

				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;
							if ( j === 0 ) {
								path.moveTo( point.x, point.y );
							}
							else {
								path.lineTo( point.x, point.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;
							path.lineTo( point.x, point.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;
							path.lineTo( point.x, point.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;
							path.lineTo( point.x, point.y );
						}
						break;

					case 'C':
						var numbers = parseFloats( data );
						for ( var j = 0, jl = numbers.length; j < jl; j += 6 ) {
							path.bezierCurveTo(
								numbers[ j + 0 ],
								numbers[ j + 1 ],
								numbers[ j + 2 ],
								numbers[ j + 3 ],
								numbers[ j + 4 ],
								numbers[ j + 5 ]
							);
							control.x = numbers[ j + 2 ];
							control.y = numbers[ j + 3 ];
							point.x = numbers[ j + 4 ];
							point.y = numbers[ j + 5 ];
						}
						break;

					case 'S':
						var numbers = parseFloats( data );
						for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
							path.bezierCurveTo(
								getReflection( point.x, control.x ),
								getReflection( point.y, control.y ),
								numbers[ j + 0 ],
								numbers[ j + 1 ],
								numbers[ j + 2 ],
								numbers[ j + 3 ]
							);
							control.x = numbers[ j + 0 ];
							control.y = numbers[ j + 1 ];
							point.x = numbers[ j + 2 ];
							point.y = numbers[ j + 3 ];
						}
						break;

					case 'Q':
						var numbers = parseFloats( data );
						for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
							path.quadraticCurveTo(
								numbers[ j + 0 ],
								numbers[ j + 1 ],
								numbers[ j + 2 ],
								numbers[ j + 3 ]
							);
							control.x = numbers[ j + 0 ];
							control.y = numbers[ j + 1 ];
							point.x = numbers[ j + 2 ];
							point.y = numbers[ j + 3 ];
						}
						break;

					case 'T':
						var numbers = parseFloats( data );
						for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
							var rx = getReflection( point.x, control.x );
							var ry = getReflection( point.y, control.y );
							path.quadraticCurveTo(
								rx,
								ry,
								numbers[ j + 0 ],
								numbers[ j + 1 ]
							);
							control.x = rx;
							control.y = ry;
							point.x = numbers[ j + 0 ];
							point.y = numbers[ j + 1 ];
						}
						break;

					case 'A':
						var numbers = parseFloats( data );
						for ( var j = 0, jl = numbers.length; j < jl; j += 7 ) {
							var start = point.clone();
							point.x = numbers[ j + 5 ];
							point.y = numbers[ j + 6 ];
							control.x = point.x;
							control.y = point.y;
							parseArcCommand(
								path, numbers[ j ], numbers[ j + 1 ], numbers[ j + 2 ], numbers[ j + 3 ], numbers[ j + 4 ], start, point
							);
						}
						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;
							if ( j === 0 ) {
								path.moveTo( point.x, point.y );
							}
							else {
								path.lineTo( point.x, point.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;
							path.lineTo( point.x, point.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;
							path.lineTo( point.x, point.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;
							path.lineTo( point.x, point.y );
						}
						break;

					case 'c':
						var numbers = parseFloats( data );
						for ( var j = 0, jl = numbers.length; j < jl; j += 6 ) {
							path.bezierCurveTo(
								point.x + numbers[ j + 0 ],
								point.y + numbers[ j + 1 ],
								point.x + numbers[ j + 2 ],
								point.y + numbers[ j + 3 ],
								point.x + numbers[ j + 4 ],
								point.y + numbers[ j + 5 ]
							);
							control.x = point.x + numbers[ j + 2 ];
							control.y = point.y + numbers[ j + 3 ];
							point.x += numbers[ j + 4 ];
							point.y += numbers[ j + 5 ];
						}
						break;

					case 's':
						var numbers = parseFloats( data );
						for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
							path.bezierCurveTo(
								getReflection( point.x, control.x ),
								getReflection( point.y, control.y ),
								point.x + numbers[ j + 0 ],
								point.y + numbers[ j + 1 ],
								point.x + numbers[ j + 2 ],
								point.y + numbers[ j + 3 ]
							);
							control.x = point.x + numbers[ j + 0 ];
							control.y = point.y + numbers[ j + 1 ];
							point.x += numbers[ j + 2 ];
							point.y += numbers[ j + 3 ];
						}
						break;

					case 'q':
						var numbers = parseFloats( data );
						for ( var j = 0, jl = numbers.length; j < jl; j += 4 ) {
							path.quadraticCurveTo(
								point.x + numbers[ j + 0 ],
								point.y + numbers[ j + 1 ],
								point.x + numbers[ j + 2 ],
								point.y + numbers[ j + 3 ]
							);
							control.x = point.x + numbers[ j + 0 ];
							control.y = point.y + numbers[ j + 1 ];
							point.x += numbers[ j + 2 ];
							point.y += numbers[ j + 3 ];
						}
						break;

					case 't':
						var numbers = parseFloats( data );
						for ( var j = 0, jl = numbers.length; j < jl; j += 2 ) {
							var rx = getReflection( point.x, control.x );
							var ry = getReflection( point.y, control.y );
							path.quadraticCurveTo(
								rx,
								ry,
								point.x + numbers[ j + 0 ],
								point.y + numbers[ j + 1 ]
							);
							control.x = rx;
							control.y = ry;
							point.x = point.x + numbers[ j + 0 ];
							point.y = point.y + numbers[ j + 1 ];
						}
						break;

					case 'a':
						var numbers = parseFloats( data );
						for ( var j = 0, jl = numbers.length; j < jl; j += 7 ) {
							var start = point.clone();
							point.x += numbers[ j + 5 ];
							point.y += numbers[ j + 6 ];
							control.x = point.x;
							control.y = point.y;
							parseArcCommand(
								path, numbers[ j ], numbers[ j + 1 ], numbers[ j + 2 ], numbers[ j + 3 ], numbers[ j + 4 ], start, point
							);
						}
						break;

					//

					case 'Z':
					case 'z':
						path.currentPath.autoClose = true;
						if ( path.currentPath.curves.length > 0 ) {
							// Reset point to beginning of Path
							point.copy( firstPoint );
							path.currentPath.currentPoint.copy( point );
							isFirstPoint = true;
						}
						break;

					default:
						console.warn( command );

				}

				// console.log( type, parseFloats( data ), parseFloats( data ).length  )

				if ( doSetFirstPoint ) {

					firstPoint.copy( point );

					doSetFirstPoint = false;

				}
			}

			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 );
			path.moveTo( x + 2 * rx, y );
			path.lineTo( x + w - 2 * rx, y );
			if ( rx !== 0 || ry !== 0 ) path.bezierCurveTo( x + w, y, x + w, y, x + w, y + 2 * ry );
			path.lineTo( x + w, y + h - 2 * ry );
			if ( rx !== 0 || ry !== 0 ) path.bezierCurveTo( x + w, y + h, x + w, y + h, x + w - 2 * rx, y + h );
			path.lineTo( x + 2 * rx, y + h );

			if ( rx !== 0 || ry !== 0 ) {

				path.bezierCurveTo( x, y + h, x, y + h, x, y + h - 2 * ry );

			}

			path.lineTo( x, y + 2 * ry );

			if ( rx !== 0 || ry !== 0 ) {

				path.bezierCurveTo( x, y, x, y, x + 2 * rx, y );

			}

			return path;

		}

		function parsePolygonNode( node, style ) {

			function iterator( match, a, b ) {

				var x = parseFloat( a );
				var y = parseFloat( b );

				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 );

				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' ) );

			var subpath = new THREE.Path();
			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' ) );

			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' ) );

			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 getNodeTransform( node ) {

			if ( ! node.hasAttribute( 'transform' ) ) {
				return null;
			}

			var 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 );

			}

			return transform;
	
		}

		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 "skewX":

						if ( array.length === 1 ) {

							transform = createIdTransform();

							transform[ 2 ] = Math.tan( array[ 0 ] * Math.PI / 180 );

						}

						break;

					case "skewY":

						if ( array.length === 1 ) {

							transform = createIdTransform();

							transform[ 1 ] = Math.tan( array[ 0 ] * Math.PI / 180 );

						}

						break;

					case "matrix":

						if ( array.length === 6 ) {

							transform = array;

						}

						break;
				}

			}
			
			return transform;

		}

		function transformPath( path, m ) {

			var isRotated = isTransformRotated( m );

			function transfVec2( v ) {

				var x = v.x * m[ 0 ] + v.y * m[ 2 ] + m[ 4 ];
				var y = v.x * m[ 1 ] + v.y * m[ 3 ] + m[ 5 ];

				v.set( x, y );

			}

			var subPaths = path.subPaths;

			for ( var i = 0, n = subPaths.length; i < n; i++ ) {

				var subPath = subPaths[ i ];
				var curves = subPath.curves;

				for ( var j = 0; j < curves.length; j++ ) {

					var curve = curves[ j ];

					if ( curve.isLineCurve ) {

						transfVec2( curve.v1 );
						transfVec2( curve.v2 );

					}
					else if ( curve.isCubicBezierCurve ) {

						transfVec2( curve.v0 );
						transfVec2( curve.v1 );
						transfVec2( curve.v2 );
						transfVec2( curve.v3 );

					}
					else if ( curve.isQuadraticBezierCurve ) {

						transfVec2( curve.v0 );
						transfVec2( curve.v1 );
						transfVec2( curve.v2 );

					}
					else if ( curve.isEllipseCurve ) {

						if ( isRotated ) {
							console.warn( "SVGLoader: Elliptic arc or ellipse rotation or skewing is not implemented." );
						}

						curve.xRadius *= getTransformScaleX( m );
						curve.yRadius *= getTransformScaleY( m );

					}

				}
	
			}

		}

		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 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();

		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;

	}

};