package net.sf.latexdraw.generators.svg;
import java.awt.geom.Arc2D;
import net.sf.latexdraw.glib.models.ShapeFactory;
import net.sf.latexdraw.glib.models.interfaces.prop.IArcProp.ArcStyle;
import net.sf.latexdraw.glib.models.interfaces.shape.IArrow;
import net.sf.latexdraw.glib.models.interfaces.shape.ICircleArc;
import net.sf.latexdraw.glib.models.interfaces.shape.IPoint;
import net.sf.latexdraw.glib.models.interfaces.shape.IShape.LineStyle;
import net.sf.latexdraw.parsers.svg.SVGAttributes;
import net.sf.latexdraw.parsers.svg.SVGDefsElement;
import net.sf.latexdraw.parsers.svg.SVGDocument;
import net.sf.latexdraw.parsers.svg.SVGElement;
import net.sf.latexdraw.parsers.svg.SVGGElement;
import net.sf.latexdraw.parsers.svg.SVGPathElement;
import net.sf.latexdraw.parsers.svg.path.SVGPathSegArc;
import net.sf.latexdraw.parsers.svg.path.SVGPathSegClosePath;
import net.sf.latexdraw.parsers.svg.path.SVGPathSegLineto;
import net.sf.latexdraw.parsers.svg.path.SVGPathSegList;
import net.sf.latexdraw.parsers.svg.path.SVGPathSegMoveto;
import net.sf.latexdraw.util.LNamespace;
/**
* Defines a SVG generator for an arc.<br>
*<br>
* This file is part of LaTeXDraw.<br>
* Copyright (c) 2005-2014 Arnaud BLOUIN<br>
*<br>
* LaTeXDraw 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.<br>
*<br>
* LaTeXDraw is distributed without any warranty; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.<br>
*<br>
* 11/11/07<br>
* @author Arnaud BLOUIN
* @version 3.0
*/
class LCircleArcSVGGenerator extends LShapeSVGGenerator<ICircleArc> {
/**
* Creates a generator of SVG arc.
* @param shape The arc shape used for the generation.
* @throws IllegalArgumentException If arc is null.
* @since 2.0
*/
protected LCircleArcSVGGenerator(final ICircleArc shape) {
super(shape);
}
/**
* Creates an arc from a latexdraw-SVG element.
* @param elt The source element.
* @param withTransformation If true, the SVG transformations will be applied.
* @since 2.0.0
*/
protected LCircleArcSVGGenerator(final SVGGElement elt, final boolean withTransformation) {
this(ShapeFactory.createCircleArc());
final SVGElement elt2 = getLaTeXDrawElement(elt, null);
final IArrow arr1 = shape.getArrowAt(0);
final IArrow arr2 = shape.getArrowAt(-1);
if(elt==null || !(elt2 instanceof SVGPathElement))
throw new IllegalArgumentException();
final SVGPathElement main = (SVGPathElement)elt2;
final SVGPathSegList l = main.getSegList();
final double sx;
final double sy;
if(l.size()<2 && !(l.get(0) instanceof SVGPathSegMoveto) && !(l.get(1) instanceof SVGPathSegArc))
throw new IllegalArgumentException();
sx = ((SVGPathSegMoveto)l.get(0)).getX();
sy = ((SVGPathSegMoveto)l.get(0)).getY();
final Arc2D arc = ((SVGPathSegArc)l.get(1)).getArc2D(sx, sy);
double angle = Math.toRadians(arc.getAngleStart())%(Math.PI*2);
shape.setAngleStart(angle);
angle = Math.toRadians(arc.getAngleExtent()+arc.getAngleStart())%(Math.PI*2);
shape.setAngleEnd(angle);
shape.setPosition(arc.getMinX(), arc.getMaxY());
shape.setWidth(arc.getMaxX()-arc.getMinX());
if(l.size()>2)
if(l.get(2) instanceof SVGPathSegClosePath)
shape.setArcStyle(ArcStyle.CHORD);
else
if(l.size()==4 && l.get(2) instanceof SVGPathSegLineto && l.get(3) instanceof SVGPathSegClosePath)
shape.setArcStyle(ArcStyle.WEDGE);
shape.setShowPts(getLaTeXDrawElement(elt, LNamespace.XML_TYPE_SHOW_PTS)!=null);
setSVGParameters(main);
setSVGArrow(arr1, main.getAttribute(main.getUsablePrefix()+SVGAttributes.SVG_MARKER_START), main, SVGAttributes.SVG_MARKER_START);
setSVGArrow(arr2, main.getAttribute(main.getUsablePrefix()+SVGAttributes.SVG_MARKER_END), main, SVGAttributes.SVG_MARKER_END);
homogeniseArrows(arr1, arr2);
setSVGLatexdrawParameters(elt);
setSVGShadowParameters(getLaTeXDrawElement(elt, LNamespace.XML_TYPE_SHADOW));
setSVGDbleBordersParameters(getLaTeXDrawElement(elt, LNamespace.XML_TYPE_DBLE_BORDERS));
if(withTransformation)
applyTransformations(elt);
}
@Override
public SVGElement toSVG(final SVGDocument doc) {
if(doc==null || doc.getFirstChild().getDefs()==null)
return null;
final SVGDefsElement defs = doc.getFirstChild().getDefs();
final double rotationAngle = shape.getRotationAngle();
final double startAngle = shape.getAngleStart()%(2.*Math.PI);
final double endAngle = shape.getAngleEnd()%(2.*Math.PI);
final ArcStyle type = shape.getArcStyle();
final SVGElement root = new SVGGElement(doc);
final IPoint start = shape.getStartPoint();
final IPoint end = shape.getEndPoint();
final double radius = shape.getWidth()/2.0;
final boolean largeArcFlag = Math.abs(startAngle-endAngle)>=Math.PI || startAngle>endAngle;
final SVGPathSegList path = new SVGPathSegList();
SVGElement elt;
root.setAttribute(LNamespace.LATEXDRAW_NAMESPACE+':'+LNamespace.XML_TYPE, LNamespace.XML_TYPE_ARC);
root.setAttribute(SVGAttributes.SVG_ID, getSVGID());
path.add(new SVGPathSegMoveto(start.getX(), start.getY(), false));
path.add(new SVGPathSegArc(end.getX(), end.getY(), radius, radius, 0, largeArcFlag, false, false));
if(type==ArcStyle.CHORD)
path.add(new SVGPathSegClosePath());
else
if(type==ArcStyle.WEDGE) {
final IPoint gravityCenter = shape.getGravityCentre();
path.add(new SVGPathSegLineto(gravityCenter.getX(), gravityCenter.getY(), false));
path.add(new SVGPathSegClosePath());
}
if(shape.hasShadow()) {
final SVGElement shad = new SVGPathElement(doc);
shad.setAttribute(SVGAttributes.SVG_D, path.toString());
setSVGShadowAttributes(shad, true);
root.appendChild(shad);
setSVGArrow(shape, shad, 0, true, doc, defs);
setSVGArrow(shape, shad, 1, true, doc, defs);
}
// The background of the borders must be filled is there is a shadow.
if(shape.hasShadow() && shape.getLineStyle()!=LineStyle.NONE) {
elt = new SVGPathElement(doc);
elt.setAttribute(SVGAttributes.SVG_D, path.toString());
setSVGBorderBackground(elt, root);
}
elt = new SVGPathElement(doc);
elt.setAttribute(SVGAttributes.SVG_D, path.toString());
root.appendChild(elt);
if(shape.hasDbleBord()) {
final SVGElement dble = new SVGPathElement(doc);
dble.setAttribute(SVGAttributes.SVG_D, path.toString());
setSVGDoubleBordersAttributes(dble);
root.appendChild(dble);
}
setSVGRotationAttribute(root);
setSVGAttributes(doc, elt, true);
elt.setAttribute(LNamespace.LATEXDRAW_NAMESPACE +':'+ LNamespace.XML_ROTATION, String.valueOf(rotationAngle));
setSVGArrow(shape, elt, 0, false, doc, defs);
setSVGArrow(shape, elt, 1, false, doc, defs);
if(shape.isShowPts())
root.appendChild(getShowPointsElement(doc));
return root;
}
/**
* Creates an SVG g element that contains the 'show points' plotting.
* @param doc The owner document.
* @return The created g element or null if the shape has not the 'show points' option activated.
* @since 2.0.0
*/
protected SVGGElement getShowPointsElement(final SVGDocument doc) {
if(!shape.isShowPts() || doc==null)
return null;
final SVGGElement showPts = new SVGGElement(doc);
final double thickness = shape.getThickness()/2.;
showPts.setAttribute(LNamespace.LATEXDRAW_NAMESPACE + ':' + LNamespace.XML_TYPE, LNamespace.XML_TYPE_SHOW_PTS);
showPts.appendChild(getShowPointsLine(doc, thickness, shape.getLineColour(), shape.getGravityCentre(),
shape.getStartPoint(), shape.getDashSepBlack(), shape.getDashSepWhite(), false, 1, 0));
showPts.appendChild(getShowPointsLine(doc, thickness, shape.getLineColour(), shape.getGravityCentre(),
shape.getEndPoint(), shape.getDashSepBlack(), shape.getDashSepWhite(), false, 1, 0));
return showPts;
}
}