/*	Copyright (c) 2004-2006, The Dojo Foundation	All Rights Reserved.	Licensed under the Academic Free License version 2.1 or above OR the	modified BSD license. For more information on Dojo licensing, see:		http://dojotoolkit.org/community/licensing.shtml*/dojo.provide("dojo.gfx.path");dojo.require("dojo.math");dojo.require("dojo.gfx.shape");dojo.declare("dojo.gfx.path.Path", dojo.gfx.Shape, {initializer:function (rawNode) {	this.shape = dojo.lang.shallowCopy(dojo.gfx.defaultPath, true);	this.segments = [];	this.absolute = true;	this.last = {};	this.attach(rawNode);}, setAbsoluteMode:function (mode) {	this.absolute = typeof (mode) == "string" ? (mode == "absolute") : mode;	return this;}, getAbsoluteMode:function () {	return this.absolute;}, getBoundingBox:function () {	return "l" in this.bbox ? {x:this.bbox.l, y:this.bbox.t, width:this.bbox.r - this.bbox.l, height:this.bbox.b - this.bbox.t} : null;}, getLastPosition:function () {	return "x" in this.last ? this.last : null;}, _updateBBox:function (x, y) {	if ("l" in this.bbox) {		if (this.bbox.l > x) {			this.bbox.l = x;		}		if (this.bbox.r < x) {			this.bbox.r = x;		}		if (this.bbox.t > y) {			this.bbox.t = y;		}		if (this.bbox.b < y) {			this.bbox.b = y;		}	} else {		this.bbox = {l:x, b:y, r:x, t:y};	}}, _updateWithSegment:function (segment) {	var n = segment.args;	var l = n.length;	switch (segment.action) {	  case "M":	  case "L":	  case "C":	  case "S":	  case "Q":	  case "T":		for (var i = 0; i < l; i += 2) {			this._updateBBox(this.bbox, n[i], n[i + 1]);		}		this.last.x = n[l - 2];		this.last.y = n[l - 1];		this.absolute = true;		break;	  case "H":		for (var i = 0; i < l; ++i) {			this._updateBBox(this.bbox, n[i], this.last.y);		}		this.last.x = n[l - 1];		this.absolute = true;		break;	  case "V":		for (var i = 0; i < l; ++i) {			this._updateBBox(this.bbox, this.last.x, n[i]);		}		this.last.y = n[l - 1];		this.absolute = true;		break;	  case "m":		var start = 0;		if (!("x" in this.last)) {			this._updateBBox(this.bbox, this.last.x = n[0], this.last.y = n[1]);			start = 2;		}		for (var i = start; i < l; i += 2) {			this._updateBBox(this.bbox, this.last.x += n[i], this.last.y += n[i + 1]);		}		this.absolute = false;		break;	  case "l":	  case "t":		for (var i = 0; i < l; i += 2) {			this._updateBBox(this.bbox, this.last.x += n[i], this.last.y += n[i + 1]);		}		this.absolute = false;		break;	  case "h":		for (var i = 0; i < l; ++i) {			this._updateBBox(this.bbox, this.last.x += n[i], this.last.y);		}		this.absolute = false;		break;	  case "v":		for (var i = 0; i < l; ++i) {			this._updateBBox(this.bbox, this.last.x, this.last.y += n[i]);		}		this.absolute = false;		break;	  case "c":		for (var i = 0; i < l; i += 6) {			this._updateBBox(this.bbox, this.last.x + n[i], this.last.y + n[i + 1]);			this._updateBBox(this.bbox, this.last.x + n[i + 2], this.last.y + n[i + 3]);			this._updateBBox(this.bbox, this.last.x += n[i + 4], this.last.y += n[i + 5]);		}		this.absolute = false;		break;	  case "s":	  case "q":		for (var i = 0; i < l; i += 4) {			this._updateBBox(this.bbox, this.last.x + n[i], this.last.y + n[i + 1]);			this._updateBBox(this.bbox, this.last.x += n[i + 2], this.last.y += n[i + 3]);		}		this.absolute = false;		break;	  case "A":		for (var i = 0; i < l; i += 7) {			this._updateBBox(this.bbox, n[i + 5], n[i + 6]);		}		this.last.x = n[l - 2];		this.last.y = n[l - 1];		this.absolute = true;		break;	  case "a":		for (var i = 0; i < l; i += 7) {			this._updateBBox(this.bbox, this.last.x += n[i + 5], this.last.y += n[i + 6]);		}		this.absolute = false;		break;	}	var path = [segment.action];	for (var i = 0; i < l; ++i) {		path.push(dojo.gfx.formatNumber(n[i], true));	}	if (typeof (this.shape.path) == "string") {		this.shape.path += path.join("");	} else {		this.shape.path = this.shape.path.concat(path);	}}, _validSegments:{m:2, l:2, h:1, v:1, c:6, s:4, q:4, t:2, a:7, z:0}, _pushSegment:function (action, args) {	var group = this._validSegments[action.toLowerCase()];	if (typeof (group) == "number") {		if (group) {			if (args.length >= group) {				var segment = {action:action, args:args.slice(0, args.length - args.length % group)};				this.segments.push(segment);				this._updateWithSegment(segment);			}		} else {			var segment = {action:action, args:[]};			this.segments.push(segment);			this._updateWithSegment(segment);		}	}}, _collectArgs:function (array, args) {	for (var i = 0; i < args.length; ++i) {		var t = args[i];		if (typeof (t) == "boolean") {			array.push(t ? 1 : 0);		} else {			if (typeof (t) == "number") {				array.push(t);			} else {				if (t instanceof Array) {					this._collectArgs(array, t);				} else {					if ("x" in t && "y" in t) {						array.push(t.x);						array.push(t.y);					}				}			}		}	}}, moveTo:function () {	var args = [];	this._collectArgs(args, arguments);	this._pushSegment(this.absolute ? "M" : "m", args);	return this;}, lineTo:function () {	var args = [];	this._collectArgs(args, arguments);	this._pushSegment(this.absolute ? "L" : "l", args);	return this;}, hLineTo:function () {	var args = [];	this._collectArgs(args, arguments);	this._pushSegment(this.absolute ? "H" : "h", args);	return this;}, vLineTo:function () {	var args = [];	this._collectArgs(args, arguments);	this._pushSegment(this.absolute ? "V" : "v", args);	return this;}, curveTo:function () {	var args = [];	this._collectArgs(args, arguments);	this._pushSegment(this.absolute ? "C" : "c", args);	return this;}, smoothCurveTo:function () {	var args = [];	this._collectArgs(args, arguments);	this._pushSegment(this.absolute ? "S" : "s", args);	return this;}, qCurveTo:function () {	var args = [];	this._collectArgs(args, arguments);	this._pushSegment(this.absolute ? "Q" : "q", args);	return this;}, qSmoothCurveTo:function () {	var args = [];	this._collectArgs(args, arguments);	this._pushSegment(this.absolute ? "T" : "t", args);	return this;}, arcTo:function () {	var args = [];	this._collectArgs(args, arguments);	for (var i = 2; i < args.length; i += 7) {		args[i] = -args[i];	}	this._pushSegment(this.absolute ? "A" : "a", args);	return this;}, closePath:function () {	this._pushSegment("Z", []);	return this;}, _setPath:function (path) {	var p = path.match(dojo.gfx.pathRegExp);	this.segments = [];	this.absolute = true;	this.bbox = {};	this.last = {};	if (!p) {		return;	}	var action = "";	var args = [];	for (var i = 0; i < p.length; ++i) {		var t = p[i];		var x = parseFloat(t);		if (isNaN(x)) {			if (action) {				this._pushSegment(action, args);			}			args = [];			action = t;		} else {			args.push(x);		}	}	this._pushSegment(action, args);}, setShape:function (newShape) {	this.shape = dojo.gfx.makeParameters(this.shape, typeof (newShape) == "string" ? {path:newShape} : newShape);	var path = this.shape.path;	this.shape.path = [];	this._setPath(path);	this.shape.path = this.shape.path.join("");	return this;}, _2PI:Math.PI * 2});