wz_jsgraphics.js
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上传日期:2021-11-18
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- /* This notice must be untouched at all times.
- wz_jsgraphics.js v. 3.03
- 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: 28. 1. 2008
- 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, polygons, ellipses and arcs
- - 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_ok, jg_ie, jg_fast, jg_dom, jg_moz;
- function _chkDHTM(x, i)
- {
- x = document.body || null;
- jg_ie = x && typeof x.insertAdjacentHTML != "undefined" && document.createElement;
- jg_dom = (x && !jg_ie &&
- typeof x.appendChild != "undefined" &&
- typeof document.createRange != "undefined" &&
- typeof (i = document.createRange()).setStartBefore != "undefined" &&
- typeof i.createContextualFragment != "undefined");
- jg_fast = jg_ie && document.all && !window.opera;
- jg_moz = jg_dom && typeof x.style.MozOpacity != "undefined";
- jg_ok = !!(jg_ie || jg_dom);
- }
- 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 _pntDoc()
- {
- this.wnd.document.write(jg_fast? this._htmRpc() : this.htm);
- this.htm = '';
- }
- function _pntN()
- {
- ;
- }
- 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>';
- }
- 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)
- {--dx;
- ++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)
- {--dy;
- 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)
- {--dy;
- 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)
- {--dx;
- ++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)
- {--dy;
- 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)
- {--dy;
- 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)
- {--dx;
- if(drw) this._mkDiv(x, y, 1, 1);
- drw = !drw;
- if(p > 0)
- {
- y += yIncr;
- p += pru;
- }
- else p += pr;
- ++x;
- }
- }
- else
- {
- var pr = dx<<1,
- pru = pr - (dy<<1),
- p = pr-dy;
- while(dy > 0)
- {--dy;
- 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,
- cx = left+a, cy = top+b,
- x = 0, y = b,
- ox = 0, oy = b,
- aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
- st = (aa2>>1)*(1-(b<<1)) + bb2,
- tt = (bb2>>1) - aa2*((b<<1)-1),
- w, h;
- while(y > 0)
- {
- if(st < 0)
- {
- st += bb2*((x<<1)+3);
- tt += bb4*(++x);
- }
- else if(tt < 0)
- {
- st += bb2*((x<<1)+3) - aa4*(y-1);
- tt += bb4*(++x) - aa2*(((y--)<<1)-3);
- w = x-ox;
- h = oy-y;
- if((w&2) && (h&2))
- {
- this._mkOvQds(cx, cy, x-2, y+2, 1, 1, wod, hod);
- this._mkOvQds(cx, cy, x-1, y+1, 1, 1, wod, hod);
- }
- else this._mkOvQds(cx, cy, x-1, oy, w, h, wod, hod);
- ox = x;
- oy = y;
- }
- else
- {
- tt -= aa2*((y<<1)-3);
- st -= aa4*(--y);
- }
- }
- w = a-ox+1;
- h = (oy<<1)+hod;
- y = cy-oy;
- this._mkDiv(cx-a, y, w, h);
- this._mkDiv(cx+ox+wod-1, y, w, h);
- }
- 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,
- cx = left+a, cy = top+b,
- x = 0, y = b,
- aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
- st = (aa2>>1)*(1-(b<<1)) + bb2,
- tt = (bb2>>1) - aa2*((b<<1)-1);
- if(s-4 < 0 && (!(s-2) || width-51 > 0 && height-51 > 0))
- {
- var ox = 0, oy = b,
- w, h,
- pxw;
- while(y > 0)
- {
- if(st < 0)
- {
- st += bb2*((x<<1)+3);
- tt += bb4*(++x);
- }
- else if(tt < 0)
- {
- st += bb2*((x<<1)+3) - aa4*(y-1);
- tt += bb4*(++x) - aa2*(((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, oy, pxw, h, wod, hod);
- ox = x;
- oy = y;
- }
- else
- {
- tt -= aa2*((y<<1)-3);
- st -= aa4*(--y);
- }
- }
- this._mkDiv(cx-a, cy-oy, s, (oy<<1)+hod);
- this._mkDiv(cx+a+wod-s, cy-oy, s, (oy<<1)+hod);
- }
- else
- {
- var _a = (width-(s<<1))>>1,
- _b = (height-(s<<1))>>1,
- _x = 0, _y = _b,
- _aa2 = (_a*_a)<<1, _aa4 = _aa2<<1, _bb2 = (_b*_b)<<1, _bb4 = _bb2<<1,
- _st = (_aa2>>1)*(1-(_b<<1)) + _bb2,
- _tt = (_bb2>>1) - _aa2*((_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)
- {
- pxl[pxl.length] = x;
- pxt[pxt.length] = y;
- st += bb2*((x<<1)+3);
- tt += bb4*(++x);
- }
- else if(tt < 0)
- {
- pxl[pxl.length] = x;
- st += bb2*((x<<1)+3) - aa4*(y-1);
- tt += bb4*(++x) - aa2*(((y--)<<1)-3);
- pxt[pxt.length] = y;
- }
- else
- {
- tt -= aa2*((y<<1)-3);
- st -= aa4*(--y);
- }
- if(_y > 0)
- {
- if(_st < 0)
- {
- _st += _bb2*((_x<<1)+3);
- _tt += _bb4*(++_x);
- _pxb[_pxb.length] = _y-1;
- }
- else if(_tt < 0)
- {
- _st += _bb2*((_x<<1)+3) - _aa4*(_y-1);
- _tt += _bb4*(++_x) - _aa2*(((_y--)<<1)-3);
- _pxb[_pxb.length] = _y-1;
- }
- else
- {
- _tt -= _aa2*((_y<<1)-3);
- _st -= _aa4*(--_y);
- _pxb[_pxb.length-1]--;
- }
- }
- }
- var ox = -wod, 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, oy, x-ox, oy-_oy, wod, hod);
- ox = x;
- oy = pxt[i];
- _oy = _pxb[i];
- }
- }
- else
- {
- x = pxl[i];
- this._mkDiv(cx-x, 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, hodu = hod^1,
- cx = left+a, cy = top+b,
- x = 0, y = b,
- aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
- st = (aa2>>1)*(1-(b<<1)) + bb2,
- tt = (bb2>>1) - aa2*((b<<1)-1),
- drw = true;
- while(y > 0)
- {
- if(st < 0)
- {
- st += bb2*((x<<1)+3);
- tt += bb4*(++x);
- }
- else if(tt < 0)
- {
- st += bb2*((x<<1)+3) - aa4*(y-1);
- tt += bb4*(++x) - aa2*(((y--)<<1)-3);
- }
- else
- {
- tt -= aa2*((y<<1)-3);
- st -= aa4*(--y);
- }
- if(drw && y >= hodu) this._mkOvQds(cx, cy, x, y, 1, 1, wod, hod);
- 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(cnv, wnd)
- {
- this.setColor = function(x)
- {
- this.color = x.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 = 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)
- {
- for (var i=x.length - 1; i;)
- {--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, b = h>>1,
- wod = w&1, hod = h&1,
- cx = left+a, cy = top+b,
- x = 0, y = b, oy = b,
- aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
- st = (aa2>>1)*(1-(b<<1)) + bb2,
- tt = (bb2>>1) - aa2*((b<<1)-1),
- xl, dw, dh;
- if(w) while(y > 0)
- {
- if(st < 0)
- {
- st += bb2*((x<<1)+3);
- tt += bb4*(++x);
- }
- else if(tt < 0)
- {
- st += bb2*((x<<1)+3) - aa4*(y-1);
- xl = cx-x;
- dw = (x<<1)+wod;
- tt += bb4*(++x) - aa2*(((y--)<<1)-3);
- dh = oy-y;
- this._mkDiv(xl, cy-oy, dw, dh);
- this._mkDiv(xl, cy+y+hod, dw, dh);
- oy = y;
- }
- else
- {
- tt -= aa2*((y<<1)-3);
- st -= aa4*(--y);
- }
- }
- this._mkDiv(cx-a, cy-oy, w, (oy<<1)+hod);
- };
- this.fillArc = function(iL, iT, iW, iH, fAngA, fAngZ)
- {
- var a = iW>>1, b = iH>>1,
- iOdds = (iW&1) | ((iH&1) << 16),
- cx = iL+a, cy = iT+b,
- x = 0, y = b, ox = x, oy = y,
- aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
- st = (aa2>>1)*(1-(b<<1)) + bb2,
- tt = (bb2>>1) - aa2*((b<<1)-1),
- // Vars for radial boundary lines
- xEndA, yEndA, xEndZ, yEndZ,
- iSects = (1 << (Math.floor((fAngA %= 360.0)/180.0) << 3))
- | (2 << (Math.floor((fAngZ %= 360.0)/180.0) << 3))
- | ((fAngA >= fAngZ) << 16),
- aBndA = new Array(b+1), aBndZ = new Array(b+1);
-
- // Set up radial boundary lines
- fAngA *= Math.PI/180.0;
- fAngZ *= Math.PI/180.0;
- xEndA = cx+Math.round(a*Math.cos(fAngA));
- yEndA = cy+Math.round(-b*Math.sin(fAngA));
- _mkLinVirt(aBndA, cx, cy, xEndA, yEndA);
- xEndZ = cx+Math.round(a*Math.cos(fAngZ));
- yEndZ = cy+Math.round(-b*Math.sin(fAngZ));
- _mkLinVirt(aBndZ, cx, cy, xEndZ, yEndZ);
- while(y > 0)
- {
- if(st < 0) // Advance x
- {
- st += bb2*((x<<1)+3);
- tt += bb4*(++x);
- }
- else if(tt < 0) // Advance x and y
- {
- st += bb2*((x<<1)+3) - aa4*(y-1);
- ox = x;
- tt += bb4*(++x) - aa2*(((y--)<<1)-3);
- this._mkArcDiv(ox, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects);
- oy = y;
- }
- else // Advance y
- {
- tt -= aa2*((y<<1)-3);
- st -= aa4*(--y);
- if(y && (aBndA[y] != aBndA[y-1] || aBndZ[y] != aBndZ[y-1]))
- {
- this._mkArcDiv(x, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects);
- ox = x;
- oy = y;
- }
- }
- }
- this._mkArcDiv(x, 0, oy, cx, cy, iOdds, aBndA, aBndZ, iSects);
- if(iOdds >> 16) // Odd height
- {
- if(iSects >> 16) // Start-angle > end-angle
- {
- var xl = (yEndA <= cy || yEndZ > cy)? (cx - x) : cx;
- this._mkDiv(xl, cy, x + cx - xl + (iOdds & 0xffff), 1);
- }
- else if((iSects & 0x01) && yEndZ > cy)
- this._mkDiv(cx - x, cy, x, 1);
- }
- };
- /* 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(_CompInt);
- for(i = 0; i < ints; i+=2)
- 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>';
- };
- /* drawStringRect() added by Rick Blommers.
- Allows to specify the size of the text rectangle and to align the
- text both horizontally (e.g. right) and vertically within that rectangle */
- this.drawStringRect = function(txt, x, y, width, halign)
- {
- this.htm += '<div style="position:absolute;overflow:hidden;'+
- 'left:' + x + 'px;'+
- 'top:' + y + 'px;'+
- 'width:'+width +'px;'+
- 'text-align:'+halign+';'+
- 'font-family:' + this.ftFam + ';'+
- 'font-size:' + this.ftSz + ';'+
- 'color:' + this.color + ';' + this.ftSty + '">'+
- txt +
- '</div>';
- };
- this.drawImage = function(imgSrc, x, y, w, h, a)
- {
- this.htm += '<div style="position:absolute;'+
- 'left:' + x + 'px;'+
- 'top:' + y + 'px;'+
- // w (width) and h (height) arguments are now optional.
- // Added by Mahmut Keygubatli, 14.1.2008
- (w? ('width:' + w + 'px;') : '') +
- (h? ('height:' + h + 'px;'):'')+'">'+
- '<img src="' + imgSrc +'"'+ (w ? (' width="' + w + '"'):'')+ (h ? (' height="' + h + '"'):'') + (a? (' '+a) : '') + '>'+
- '</div>';
- };
- this.clear = function()
- {
- this.htm = "";
- if(this.cnv) this.cnv.innerHTML = "";
- };
- this._mkOvQds = function(cx, cy, x, y, w, h, wod, hod)
- {
- var xl = cx - x, xr = cx + x + wod - w, yt = cy - y, yb = cy + y + hod - h;
- if(xr > xl+w)
- {
- this._mkDiv(xr, yt, w, h);
- this._mkDiv(xr, yb, w, h);
- }
- else
- w = xr - xl + w;
- this._mkDiv(xl, yt, w, h);
- this._mkDiv(xl, yb, w, h);
- };
-
- this._mkArcDiv = function(x, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects)
- {
- var xrDef = cx + x + (iOdds & 0xffff), y2, h = oy - y, xl, xr, w;
- if(!h) h = 1;
- x = cx - x;
- if(iSects & 0xff0000) // Start-angle > end-angle
- {
- y2 = cy - y - h;
- if(iSects & 0x00ff)
- {
- if(iSects & 0x02)
- {
- xl = Math.max(x, aBndZ[y]);
- w = xrDef - xl;
- if(w > 0) this._mkDiv(xl, y2, w, h);
- }
- if(iSects & 0x01)
- {
- xr = Math.min(xrDef, aBndA[y]);
- w = xr - x;
- if(w > 0) this._mkDiv(x, y2, w, h);
- }
- }
- else
- this._mkDiv(x, y2, xrDef - x, h);
- y2 = cy + y + (iOdds >> 16);
- if(iSects & 0xff00)
- {
- if(iSects & 0x0100)
- {
- xl = Math.max(x, aBndA[y]);
- w = xrDef - xl;
- if(w > 0) this._mkDiv(xl, y2, w, h);
- }
- if(iSects & 0x0200)
- {
- xr = Math.min(xrDef, aBndZ[y]);
- w = xr - x;
- if(w > 0) this._mkDiv(x, y2, w, h);
- }
- }
- else
- this._mkDiv(x, y2, xrDef - x, h);
- }
- else
- {
- if(iSects & 0x00ff)
- {
- if(iSects & 0x02)
- xl = Math.max(x, aBndZ[y]);
- else
- xl = x;
- if(iSects & 0x01)
- xr = Math.min(xrDef, aBndA[y]);
- else
- xr = xrDef;
- y2 = cy - y - h;
- w = xr - xl;
- if(w > 0) this._mkDiv(xl, y2, w, h);
- }
- if(iSects & 0xff00)
- {
- if(iSects & 0x0100)
- xl = Math.max(x, aBndA[y]);
- else
- xl = x;
- if(iSects & 0x0200)
- xr = Math.min(xrDef, aBndZ[y]);
- else
- xr = xrDef;
- y2 = cy + y + (iOdds >> 16);
- w = xr - xl;
- if(w > 0) this._mkDiv(xl, y2, w, h);
- }
- }
- };
- this.setStroke(1);
- this.setFont("verdana,geneva,helvetica,sans-serif", "12px", Font.PLAIN);
- this.color = "#000000";
- this.htm = "";
- this.wnd = wnd || window;
- if(!jg_ok) _chkDHTM();
- if(jg_ok)
- {
- if(cnv)
- {
- if(typeof(cnv) == "string")
- this.cont = document.all? (this.wnd.document.all[cnv] || null)
- : document.getElementById? (this.wnd.document.getElementById(cnv) || null)
- : null;
- else if(cnv == window.document)
- this.cont = document.getElementsByTagName("body")[0];
- // If cnv is a direct reference to a canvas DOM node
- // (option suggested by Andreas Luleich)
- else this.cont = cnv;
- // Create new canvas inside container DIV. Thus the drawing and clearing
- // methods won't interfere with the container's inner html.
- // Solution suggested by Vladimir.
- this.cnv = this.wnd.document.createElement("div");
- this.cnv.style.fontSize=0;
- this.cont.appendChild(this.cnv);
- this.paint = jg_dom? _pntCnvDom : _pntCnvIe;
- }
- else
- this.paint = _pntDoc;
- }
- else
- this.paint = _pntN;
- this.setPrintable(false);
- }
- function _mkLinVirt(aLin, x1, y1, x2, y2)
- {
- var dx = Math.abs(x2-x1), dy = Math.abs(y2-y1),
- x = x1, y = y1,
- xIncr = (x1 > x2)? -1 : 1,
- yIncr = (y1 > y2)? -1 : 1,
- p,
- i = 0;
- if(dx >= dy)
- {
- var pr = dy<<1,
- pru = pr - (dx<<1);
- p = pr-dx;
- while(dx > 0)
- {--dx;
- if(p > 0) // Increment y
- {
- aLin[i++] = x;
- y += yIncr;
- p += pru;
- }
- else p += pr;
- x += xIncr;
- }
- }
- else
- {
- var pr = dx<<1,
- pru = pr - (dy<<1);
- p = pr-dy;
- while(dy > 0)
- {--dy;
- y += yIncr;
- aLin[i++] = x;
- if(p > 0) // Increment x
- {
- x += xIncr;
- p += pru;
- }
- else p += pr;
- }
- }
- for(var len = aLin.length, i = len-i; i;)
- aLin[len-(i--)] = x;
- };
- function _CompInt(x, y)
- {
- return(x - y);
- }