/lib/spatial/mapbuilder/lib/util/wz_jsgraphics/wz_jsgraphics.js - Metacat - Ecoinformatics Redmine

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       /* This notice must be untouched at all times.
       wz_jsgraphics.js    v. 2.3
       The latest version is available at
       http://www.walterzorn.com
       or http://www.devira.com
       or http://www.walterzorn.de
       Copyright (c) 2002-2004 Walter Zorn. All rights reserved.
       Created 3. 11. 2002 by Walter Zorn (Web: http://www.walterzorn.com )
       Last modified: 15. 3. 2004
       Performance optimizations for Internet Explorer
       by Thomas Frank and John Holdsworth.
       fillPolygon method implemented by Matthieu Haller.
       High Performance JavaScript Graphics Library.
       Provides methods
       - to draw lines, rectangles, ellipses, polygons
         with specifiable line thickness,
       - to fill rectangles and ellipses
       - to draw text.
       NOTE: Operations, functions and branching have rather been optimized
       to efficiency and speed than to shortness of source code.
       This program is free software;
       you can redistribute it and/or modify it under the terms of the
       GNU General Public License as published by the Free Software Foundation;
       either version 2 of the License, or (at your option) any later version.
       This program is distributed in the hope that it will be useful,
       but WITHOUT ANY WARRANTY;
       without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
       See the GNU General Public License
       at http://www.gnu.org/copyleft/lesser.html for more details.
       */
       var jg_ihtm, jg_ie, jg_fast, jg_dom, jg_moz,
       jg_n4 = (document.layers && typeof document.classes != "undefined");
       function chkDHTM(x, i)
+      {
       	x = document.body || null;
       	jg_ie = x && typeof x.insertAdjacentHTML != "undefined";
       	jg_dom = (x && !jg_ie &&
       		typeof x.appendChild != "undefined" &&
       		typeof document.createRange != "undefined" &&
       		typeof (i = document.createRange()).setStartBefore != "undefined" &&
       		typeof i.createContextualFragment != "undefined");
       	jg_ihtm = !jg_ie && !jg_dom && x && typeof x.innerHTML != "undefined";
       	jg_fast = jg_ie && document.all && !window.opera;
       	jg_moz = jg_dom && typeof x.style.MozOpacity != "undefined";
+      }
       function pntDoc()
+      {
       	this.wnd.document.write(jg_fast? this.htmRpc() : this.htm);
       	this.htm = '';
+      }
       function pntCnvDom()
+      {
       	var x = document.createRange();
       	x.setStartBefore(this.cnv);
       	x = x.createContextualFragment(jg_fast? this.htmRpc() : this.htm);
       	this.cnv.appendChild(x);
       	this.htm = '';
+      }
       function pntCnvIe()
+      {
       	this.cnv.insertAdjacentHTML("beforeEnd", jg_fast? this.htmRpc() : this.htm);
       	this.htm = '';
+      }
       function pntCnvIhtm()
+      {
       	this.cnv.innerHTML += this.htm;
       	this.htm = '';
+      }
       function pntCnv()
+      {
       	this.htm = '';
+      }
       function mkDiv(x, y, w, h)
+      {
       	this.htm += '<div style="position:absolute;'+
       		'left:' + x + 'px;'+
       		'top:' + y + 'px;'+
       		'width:' + w + 'px;'+
       		'height:' + h + 'px;'+
       		'clip:rect(0,'+w+'px,'+h+'px,0);'+
       		'background-color:' + this.color +
       		(!jg_moz? ';overflow:hidden' : '')+
       		';"><\/div>';
+      }
       function mkDivIe(x, y, w, h)
+      {
       	this.htm += '%%'+this.color+';'+x+';'+y+';'+w+';'+h+';';
+      }
       function mkDivPrt(x, y, w, h)
+      {
       	this.htm += '<div style="position:absolute;'+
       		'border-left:' + w + 'px solid ' + this.color + ';'+
       		'left:' + x + 'px;'+
       		'top:' + y + 'px;'+
       		'width:0px;'+
       		'height:' + h + 'px;'+
       		'clip:rect(0,'+w+'px,'+h+'px,0);'+
       		'background-color:' + this.color +
       		(!jg_moz? ';overflow:hidden' : '')+
       		';"><\/div>';
+      }
       function mkLyr(x, y, w, h)
+      {
       	this.htm += '<layer '+
       		'left="' + x + '" '+
       		'top="' + y + '" '+
       		'width="' + w + '" '+
       		'height="' + h + '" '+
       		'bgcolor="' + this.color + '"><\/layer>\n';
+      }
       var regex =  /%%([^;]+);([^;]+);([^;]+);([^;]+);([^;]+);/g;
       function htmRpc()
+      {
       	return this.htm.replace(
       		regex,
       		'<div style="overflow:hidden;position:absolute;background-color:'+
       		'$1;left:$2;top:$3;width:$4;height:$5"></div>\n');
+      }
       function htmPrtRpc()
+      {
       	return this.htm.replace(
       		regex,
       		'<div style="overflow:hidden;position:absolute;background-color:'+
       		'$1;left:$2;top:$3;width:$4;height:$5;border-left:$4px solid $1"></div>\n');
+      }
       function mkLin(x1, y1, x2, y2)
+      {
       	if (x1 > x2)
+      	{
       		var _x2 = x2;
       		var _y2 = y2;
       		x2 = x1;
       		y2 = y1;
       		x1 = _x2;
       		y1 = _y2;
+      	}
       	var dx = x2-x1, dy = Math.abs(y2-y1),
       	x = x1, y = y1,
       	yIncr = (y1 > y2)? -1 : 1;
       	if (dx >= dy)
+      	{
       		var pr = dy<<1,
       		pru = pr - (dx<<1),
       		p = pr-dx,
       		ox = x;
       		while ((dx--) > 0)
+      		{
       			++x;
       			if (p > 0)
+      			{
       				this.mkDiv(ox, y, x-ox, 1);
       				y += yIncr;
       				p += pru;
       				ox = x;
+      			}
       			else p += pr;
+      		}
       		this.mkDiv(ox, y, x2-ox+1, 1);
+      	}
       	else
+      	{
       		var pr = dx<<1,
       		pru = pr - (dy<<1),
       		p = pr-dy,
       		oy = y;
       		if (y2 <= y1)
+      		{
       			while ((dy--) > 0)
+      			{
       				if (p > 0)
+      				{
       					this.mkDiv(x++, y, 1, oy-y+1);
       					y += yIncr;
       					p += pru;
       					oy = y;
+      				}
       				else
+      				{
       					y += yIncr;
       					p += pr;
+      				}
+      			}
       			this.mkDiv(x2, y2, 1, oy-y2+1);
+      		}
       		else
+      		{
       			while ((dy--) > 0)
+      			{
       				y += yIncr;
       				if (p > 0)
+      				{
       					this.mkDiv(x++, oy, 1, y-oy);
       					p += pru;
       					oy = y;
+      				}
       				else p += pr;
+      			}
       			this.mkDiv(x2, oy, 1, y2-oy+1);
+      		}
+      	}
+      }
       function mkLin2D(x1, y1, x2, y2)
+      {
       	if (x1 > x2)
+      	{
       		var _x2 = x2;
       		var _y2 = y2;
       		x2 = x1;
       		y2 = y1;
       		x1 = _x2;
       		y1 = _y2;
+      	}
       	var dx = x2-x1, dy = Math.abs(y2-y1),
       	x = x1, y = y1,
       	yIncr = (y1 > y2)? -1 : 1;
       	var s = this.stroke;
       	if (dx >= dy)
+      	{
       		if (s-3 > 0)
+      		{
       			var _s = (s*dx*Math.sqrt(1+dy*dy/(dx*dx))-dx-(s>>1)*dy) / dx;
       			_s = (!(s-4)? Math.ceil(_s) : Math.round(_s)) + 1;
+      		}
       		else var _s = s;
       		var ad = Math.ceil(s/2);
       		var pr = dy<<1,
       		pru = pr - (dx<<1),
       		p = pr-dx,
       		ox = x;
       		while ((dx--) > 0)
+      		{
       			++x;
       			if (p > 0)
+      			{
       				this.mkDiv(ox, y, x-ox+ad, _s);
       				y += yIncr;
       				p += pru;
       				ox = x;
+      			}
       			else p += pr;
+      		}
       		this.mkDiv(ox, y, x2-ox+ad+1, _s);
+      	}
       	else
+      	{
       		if (s-3 > 0)
+      		{
       			var _s = (s*dy*Math.sqrt(1+dx*dx/(dy*dy))-(s>>1)*dx-dy) / dy;
       			_s = (!(s-4)? Math.ceil(_s) : Math.round(_s)) + 1;
+      		}
       		else var _s = s;
       		var ad = Math.round(s/2);
       		var pr = dx<<1,
       		pru = pr - (dy<<1),
       		p = pr-dy,
       		oy = y;
       		if (y2 <= y1)
+      		{
       			++ad;
       			while ((dy--) > 0)
+      			{
       				if (p > 0)
+      				{
       					this.mkDiv(x++, y, _s, oy-y+ad);
       					y += yIncr;
       					p += pru;
       					oy = y;
+      				}
       				else
+      				{
       					y += yIncr;
       					p += pr;
+      				}
+      			}
       			this.mkDiv(x2, y2, _s, oy-y2+ad);
+      		}
       		else
+      		{
       			while ((dy--) > 0)
+      			{
       				y += yIncr;
       				if (p > 0)
+      				{
       					this.mkDiv(x++, oy, _s, y-oy+ad);
       					p += pru;
       					oy = y;
+      				}
       				else p += pr;
+      			}
       			this.mkDiv(x2, oy, _s, y2-oy+ad+1);
+      		}
+      	}
+      }
       function mkLinDott(x1, y1, x2, y2)
+      {
       	if (x1 > x2)
+      	{
       		var _x2 = x2;
       		var _y2 = y2;
       		x2 = x1;
       		y2 = y1;
       		x1 = _x2;
       		y1 = _y2;
+      	}
       	var dx = x2-x1, dy = Math.abs(y2-y1),
       	x = x1, y = y1,
       	yIncr = (y1 > y2)? -1 : 1,
       	drw = true;
       	if (dx >= dy)
+      	{
       		var pr = dy<<1,
       		pru = pr - (dx<<1),
       		p = pr-dx;
       		while ((dx--) > 0)
+      		{
       			if (drw) this.mkDiv(x, y, 1, 1);
       			drw = !drw;
       			if (p > 0)
+      			{
       				y += yIncr;
       				p += pru;
+      			}
       			else p += pr;
       			++x;
+      		}
       		if (drw) this.mkDiv(x, y, 1, 1);
+      	}
       	else
+      	{
       		var pr = dx<<1,
       		pru = pr - (dy<<1),
       		p = pr-dy;
       		while ((dy--) > 0)
+      		{
       			if (drw) this.mkDiv(x, y, 1, 1);
       			drw = !drw;
       			y += yIncr;
       			if (p > 0)
+      			{
       				++x;
       				p += pru;
+      			}
       			else p += pr;
+      		}
       		if (drw) this.mkDiv(x, y, 1, 1);
+      	}
+      }
       function mkOv(left, top, width, height)
+      {
       	var a = width>>1, b = height>>1,
       	wod = width&1, hod = (height&1)+1,
       	cx = left+a, cy = top+b,
       	x = 0, y = b,
       	ox = 0, oy = b,
       	aa = (a*a)<<1, bb = (b*b)<<1,
       	st = (aa>>1)*(1-(b<<1)) + bb,
       	tt = (bb>>1) - aa*((b<<1)-1),
       	w, h;
       	while (y > 0)
+      	{
       		if (st < 0)
+      		{
       			st += bb*((x<<1)+3);
       			tt += (bb<<1)*(++x);
+      		}
       		else if (tt < 0)
+      		{
       			st += bb*((x<<1)+3) - (aa<<1)*(y-1);
       			tt += (bb<<1)*(++x) - aa*(((y--)<<1)-3);
       			w = x-ox;
       			h = oy-y;
       			if (w&2 && h&2)
+      			{
       				this.mkOvQds(cx, cy, -x+2, ox+wod, -oy, oy-1+hod, 1, 1);
       				this.mkOvQds(cx, cy, -x+1, x-1+wod, -y-1, y+hod, 1, 1);
+      			}
       			else this.mkOvQds(cx, cy, -x+1, ox+wod, -oy, oy-h+hod, w, h);
       			ox = x;
       			oy = y;
+      		}
       		else
+      		{
       			tt -= aa*((y<<1)-3);
       			st -= (aa<<1)*(--y);
+      		}
+      	}
       	this.mkDiv(cx-a, cy-oy, a-ox+1, (oy<<1)+hod);
       	this.mkDiv(cx+ox+wod, cy-oy, a-ox+1, (oy<<1)+hod);
+      }
       function mkOv2D(left, top, width, height)
+      {
       	var s = this.stroke;
       	width += s-1;
       	height += s-1;
       	var a = width>>1, b = height>>1,
       	wod = width&1, hod = (height&1)+1,
       	cx = left+a, cy = top+b,
       	x = 0, y = b,
       	aa = (a*a)<<1, bb = (b*b)<<1,
       	st = (aa>>1)*(1-(b<<1)) + bb,
       	tt = (bb>>1) - aa*((b<<1)-1);
       	if (s-4 < 0 && (!(s-2) || width-51 > 0 && height-51 > 0))
+      	{
       		var ox = 0, oy = b,
       		w, h,
       		pxl, pxr, pxt, pxb, pxw;
       		while (y > 0)
+      		{
       			if (st < 0)
+      			{
       				st += bb*((x<<1)+3);
       				tt += (bb<<1)*(++x);
+      			}
       			else if (tt < 0)
+      			{
       				st += bb*((x<<1)+3) - (aa<<1)*(y-1);
       				tt += (bb<<1)*(++x) - aa*(((y--)<<1)-3);
       				w = x-ox;
       				h = oy-y;
       				if (w-1)
+      				{
       					pxw = w+1+(s&1);
       					h = s;
+      				}
       				else if (h-1)
+      				{
       					pxw = s;
       					h += 1+(s&1);
+      				}
       				else pxw = h = s;
       				this.mkOvQds(cx, cy, -x+1, ox-pxw+w+wod, -oy, -h+oy+hod, pxw, h);
       				ox = x;
       				oy = y;
+      			}
       			else
+      			{
       				tt -= aa*((y<<1)-3);
       				st -= (aa<<1)*(--y);
+      			}
+      		}
       		this.mkDiv(cx-a, cy-oy, s, (oy<<1)+hod);
       		this.mkDiv(cx+a+wod-s+1, cy-oy, s, (oy<<1)+hod);
+      	}
       	else
+      	{
       		var _a = (width-((s-1)<<1))>>1,
       		_b = (height-((s-1)<<1))>>1,
       		_x = 0, _y = _b,
       		_aa = (_a*_a)<<1, _bb = (_b*_b)<<1,
       		_st = (_aa>>1)*(1-(_b<<1)) + _bb,
       		_tt = (_bb>>1) - _aa*((_b<<1)-1),
       		pxl = new Array(),
       		pxt = new Array(),
       		_pxb = new Array();
       		pxl[0] = 0;
       		pxt[0] = b;
       		_pxb[0] = _b-1;
       		while (y > 0)
+      		{
       			if (st < 0)
+      			{
       				st += bb*((x<<1)+3);
       				tt += (bb<<1)*(++x);
       				pxl[pxl.length] = x;
       				pxt[pxt.length] = y;
+      			}
       			else if (tt < 0)
+      			{
       				st += bb*((x<<1)+3) - (aa<<1)*(y-1);
       				tt += (bb<<1)*(++x) - aa*(((y--)<<1)-3);
       				pxl[pxl.length] = x;
       				pxt[pxt.length] = y;
+      			}
       			else
+      			{
       				tt -= aa*((y<<1)-3);
       				st -= (aa<<1)*(--y);
+      			}
       			if (_y > 0)
+      			{
       				if (_st < 0)
+      				{
       					_st += _bb*((_x<<1)+3);
       					_tt += (_bb<<1)*(++_x);
       					_pxb[_pxb.length] = _y-1;
+      				}
       				else if (_tt < 0)
+      				{
       					_st += _bb*((_x<<1)+3) - (_aa<<1)*(_y-1);
       					_tt += (_bb<<1)*(++_x) - _aa*(((_y--)<<1)-3);
       					_pxb[_pxb.length] = _y-1;
+      				}
       				else
+      				{
       					_tt -= _aa*((_y<<1)-3);
       					_st -= (_aa<<1)*(--_y);
       					_pxb[_pxb.length-1]--;
+      				}
+      			}
+      		}
       		var ox = 0, oy = b,
       		_oy = _pxb[0],
       		l = pxl.length,
       		w, h;
       		for (var i = 0; i < l; i++)
+      		{
       			if (typeof _pxb[i] != "undefined")
+      			{
       				if (_pxb[i] < _oy || pxt[i] < oy)
+      				{
       					x = pxl[i];
       					this.mkOvQds(cx, cy, -x+1, ox+wod, -oy, _oy+hod, x-ox, oy-_oy);
       					ox = x;
       					oy = pxt[i];
       					_oy = _pxb[i];
+      				}
+      			}
       			else
+      			{
       				x = pxl[i];
       				this.mkDiv(cx-x+1, cy-oy, 1, (oy<<1)+hod);
       				this.mkDiv(cx+ox+wod, cy-oy, 1, (oy<<1)+hod);
       				ox = x;
       				oy = pxt[i];
+      			}
+      		}
       		this.mkDiv(cx-a, cy-oy, 1, (oy<<1)+hod);
       		this.mkDiv(cx+ox+wod, cy-oy, 1, (oy<<1)+hod);
+      	}
+      }
       function mkOvDott(left, top, width, height)
+      {
       	var a = width>>1, b = height>>1,
       	wod = width&1, hod = height&1,
       	cx = left+a, cy = top+b,
       	x = 0, y = b,
       	aa2 = (a*a)<<1, aa4 = aa2<<1, bb = (b*b)<<1,
       	st = (aa2>>1)*(1-(b<<1)) + bb,
       	tt = (bb>>1) - aa2*((b<<1)-1),
       	drw = true;
       	while (y > 0)
+      	{
       		if (st < 0)
+      		{
       			st += bb*((x<<1)+3);
       			tt += (bb<<1)*(++x);
+      		}
       		else if (tt < 0)
+      		{
       			st += bb*((x<<1)+3) - aa4*(y-1);
       			tt += (bb<<1)*(++x) - aa2*(((y--)<<1)-3);
+      		}
       		else
+      		{
       			tt -= aa2*((y<<1)-3);
       			st -= aa4*(--y);
+      		}
       		if (drw) this.mkOvQds(cx, cy, -x, x+wod, -y, y+hod, 1, 1);
       		drw = !drw;
+      	}
+      }
       function mkRect(x, y, w, h)
+      {
       	var s = this.stroke;
       	this.mkDiv(x, y, w, s);
       	this.mkDiv(x+w, y, s, h);
       	this.mkDiv(x, y+h, w+s, s);
       	this.mkDiv(x, y+s, s, h-s);
+      }
       function mkRectDott(x, y, w, h)
+      {
       	this.drawLine(x, y, x+w, y);
       	this.drawLine(x+w, y, x+w, y+h);
       	this.drawLine(x, y+h, x+w, y+h);
       	this.drawLine(x, y, x, y+h);
+      }
       function jsgFont()
+      {
       	this.PLAIN = 'font-weight:normal;';
       	this.BOLD = 'font-weight:bold;';
       	this.ITALIC = 'font-style:italic;';
       	this.ITALIC_BOLD = this.ITALIC + this.BOLD;
       	this.BOLD_ITALIC = this.ITALIC_BOLD;
+      }
       var Font = new jsgFont();
       function jsgStroke()
+      {
       	this.DOTTED = -1;
+      }
       var Stroke = new jsgStroke();
       function jsGraphics(id, wnd)
+      {
       	this.setColor = new Function('arg', 'this.color = arg.toLowerCase();');
       	this.setStroke = function(x)
+      	{
       		this.stroke = x;
       		if (!(x+1))
+      		{
       			this.drawLine = mkLinDott;
       			this.mkOv = mkOvDott;
       			this.drawRect = mkRectDott;
+      		}
       		else if (x-1 > 0)
+      		{
       			this.drawLine = mkLin2D;
       			this.mkOv = mkOv2D;
       			this.drawRect = mkRect;
+      		}
       		else
+      		{
       			this.drawLine = mkLin;
       			this.mkOv = mkOv;
       			this.drawRect = mkRect;
+      		}
       	};
       	this.setPrintable = function(arg)
+      	{
       		this.printable = arg;
       		if (jg_fast)
+      		{
       			this.mkDiv = mkDivIe;
       			this.htmRpc = arg? htmPrtRpc : htmRpc;
+      		}
       		else this.mkDiv = jg_n4? mkLyr : arg? mkDivPrt : mkDiv;
       	};
       	this.setFont = function(fam, sz, sty)
+      	{
       		this.ftFam = fam;
       		this.ftSz = sz;
       		this.ftSty = sty || Font.PLAIN;
       	};
       	this.drawPolyline = this.drawPolyLine = function(x, y, s)
+      	{
       		for (var i=0 ; i<x.length-1 ; i++ )
       			this.drawLine(x[i], y[i], x[i+1], y[i+1]);
       	};
       	this.fillRect = function(x, y, w, h)
+      	{
       		this.mkDiv(x, y, w, h);
       	};
       	this.drawPolygon = function(x, y)
+      	{
       		this.drawPolyline(x, y);
       		this.drawLine(x[x.length-1], y[x.length-1], x[0], y[0]);
       	};
       	this.drawEllipse = this.drawOval = function(x, y, w, h)
+      	{
       		this.mkOv(x, y, w, h);
       	};
       	this.fillEllipse = this.fillOval = function(left, top, w, h)
+      	{
       		var a = (w -= 1)>>1, b = (h -= 1)>>1,
       		wod = (w&1)+1, hod = (h&1)+1,
       		cx = left+a, cy = top+b,
       		x = 0, y = b,
       		ox = 0, oy = b,
       		aa2 = (a*a)<<1, aa4 = aa2<<1, bb = (b*b)<<1,
       		st = (aa2>>1)*(1-(b<<1)) + bb,
       		tt = (bb>>1) - aa2*((b<<1)-1),
       		pxl, dw, dh;
       		if (w+1) while (y > 0)
+      		{
       			if (st < 0)
+      			{
       				st += bb*((x<<1)+3);
       				tt += (bb<<1)*(++x);
+      			}
       			else if (tt < 0)
+      			{
       				st += bb*((x<<1)+3) - aa4*(y-1);
       				pxl = cx-x;
       				dw = (x<<1)+wod;
       				tt += (bb<<1)*(++x) - aa2*(((y--)<<1)-3);
       				dh = oy-y;
       				this.mkDiv(pxl, cy-oy, dw, dh);
       				this.mkDiv(pxl, cy+oy-dh+hod, dw, dh);
       				ox = x;
       				oy = y;
+      			}
       			else
+      			{
       				tt -= aa2*((y<<1)-3);
       				st -= aa4*(--y);
+      			}
+      		}
       		this.mkDiv(cx-a, cy-oy, w+1, (oy<<1)+hod);
       	};
       /* fillPolygon method, implemented by Matthieu Haller.
       This javascript function is an adaptation of the gdImageFilledPolygon for Walter Zorn lib.
       C source of GD 1.8.4 found at http://www.boutell.com/gd/
       THANKS to Kirsten Schulz for the polygon fixes!
       The intersection finding technique of this code could be improved
       by remembering the previous intertersection, and by using the slope.
       That could help to adjust intersections to produce a nice
       interior_extrema. */
       	this.fillPolygon = function(array_x, array_y)
+      	{
       		var i;
       		var y;
       		var miny, maxy;
       		var x1, y1;
       		var x2, y2;
       		var ind1, ind2;
       		var ints;
       		var n = array_x.length;
       		if (!n) return;
       		miny = array_y[0];
       		maxy = array_y[0];
       		for (i = 1; i < n; i++)
+      		{
       			if (array_y[i] < miny)
       				miny = array_y[i];
       			if (array_y[i] > maxy)
       				maxy = array_y[i];
+      		}
       		for (y = miny; y <= maxy; y++)
+      		{
       			var polyInts = new Array();
       			ints = 0;
       			for (i = 0; i < n; i++)
+      			{
       				if (!i)
+      				{
       					ind1 = n-1;
       					ind2 = 0;
+      				}
       				else
+      				{
       					ind1 = i-1;
       					ind2 = i;
+      				}
       				y1 = array_y[ind1];
       				y2 = array_y[ind2];
       				if (y1 < y2)
+      				{
       					x1 = array_x[ind1];
       					x2 = array_x[ind2];
+      				}
       				else if (y1 > y2)
+      				{
       					y2 = array_y[ind1];
       					y1 = array_y[ind2];
       					x2 = array_x[ind1];
       					x1 = array_x[ind2];
+      				}
       				else continue;
       				 // modified 11. 2. 2004 Walter Zorn
       				if ((y >= y1) && (y < y2))
       					polyInts[ints++] = Math.round((y-y1) * (x2-x1) / (y2-y1) + x1);
       				else if ((y == maxy) && (y > y1) && (y <= y2))
       					polyInts[ints++] = Math.round((y-y1) * (x2-x1) / (y2-y1) + x1);
+      			}
       			polyInts.sort(integer_compare);
       			for (i = 0; i < ints; i+=2)
+      			{
       				w = polyInts[i+1]-polyInts[i]
       				this.mkDiv(polyInts[i], y, polyInts[i+1]-polyInts[i]+1, 1);
+      			}
+      		}
       	};
       	this.drawString = function(txt, x, y)
+      	{
       		this.htm += '<div style="position:absolute;white-space:nowrap;'+
       			'left:' + x + 'px;'+
       			'top:' + y + 'px;'+
       			'font-family:' +  this.ftFam + ';'+
       			'font-size:' + this.ftSz + ';'+
       			'color:' + this.color + ';' + this.ftSty + '">'+
       			txt +
       			'<\/div>';
+      	}
       	this.drawImage = function(imgSrc, x, y, w, h)
+      	{
       		this.htm += '<div style="position:absolute;'+
       			'left:' + x + 'px;'+
       			'top:' + y + 'px;'+
       			'width:' +  w + ';'+
       			'height:' + h + ';">'+
       			'<img src="' + imgSrc + '" width="' + w + '" height="' + h + '">'+
       			'<\/div>';
+      	}
       	this.clear = function()
+      	{
       		this.htm = "";
       		if (this.cnv) this.cnv.innerHTML = this.defhtm;
       	};
       	this.mkOvQds = function(cx, cy, xl, xr, yt, yb, w, h)
+      	{
       		this.mkDiv(xr+cx, yt+cy, w, h);
       		this.mkDiv(xr+cx, yb+cy, w, h);
       		this.mkDiv(xl+cx, yb+cy, w, h);
       		this.mkDiv(xl+cx, yt+cy, w, h);
       	};
       	this.setStroke(1);
       	this.setFont('verdana,geneva,helvetica,sans-serif', String.fromCharCode(0x31, 0x32, 0x70, 0x78), Font.PLAIN);
       	this.color = '#000000';
       	this.htm = '';
       	this.wnd = wnd || window;
       	if (!(jg_ie || jg_dom || jg_ihtm)) chkDHTM();
       	if (typeof id != 'string' || !id) this.paint = pntDoc;
       	else
+      	{
       		this.cnv = document.all? (this.wnd.document.all[id] || null)
       			: document.getElementById? (this.wnd.document.getElementById(id) || null)
       			: null;
       		this.defhtm = (this.cnv && this.cnv.innerHTML)? this.cnv.innerHTML : '';
       		this.paint = jg_dom? pntCnvDom : jg_ie? pntCnvIe : jg_ihtm? pntCnvIhtm : pntCnv;
+      	}
       	this.setPrintable(false);
+      }
       function integer_compare(x,y)
+      {
       	return (x < y) ? -1 : ((x > y)*1);
+      }

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