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/* This notice must be untouched at all times. wz_jsgraphics.js v. 2.36 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: 21. 6. 2006 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. LICENSE: LGPL This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License (LGPL) as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA, or see http://www.gnu.org/copyleft/lesser.html */ 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 = this.wnd.document.createRange(); x.setStartBefore(this.cnv); x = x.createContextualFragment(jg_fast? this.htmRpc() : this.htm); if(this.cnv) this.cnv.appendChild(x); this.htm = ''; } function pntCnvIe() { if(this.cnv) this.cnv.insertAdjacentHTML("BeforeEnd", jg_fast? this.htmRpc() : this.htm); this.htm = ''; } function pntCnvIhtm() { if(this.cnv) 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 (dx > 0 && 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 = t