package net.sf.latexdraw.generators.svg;
import java.awt.geom.Point2D;
import java.util.List;
import net.sf.latexdraw.glib.models.GLibUtilities;
import net.sf.latexdraw.glib.models.ShapeFactory;
import net.sf.latexdraw.glib.models.interfaces.shape.IPoint;
import net.sf.latexdraw.glib.models.interfaces.shape.ITriangle;
import net.sf.latexdraw.glib.views.pst.PSTricksConstants;
import net.sf.latexdraw.parsers.svg.SVGAttributes;
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.SVGPolygonElement;
import net.sf.latexdraw.parsers.svg.parsers.SVGPointsParser;
import net.sf.latexdraw.util.LNamespace;
/**
* Defines an SVG generator for a triangle.<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 LTriangleSVGGenerator extends LShapeSVGGenerator<ITriangle> {
/**
* Creates a generator of SVG triangle.
* @param triangle The triangle used for the generation.
* @throws IllegalArgumentException If the given triangle is null.
* @since 2.0
*/
protected LTriangleSVGGenerator(final ITriangle triangle) {
super(triangle);
}
/**
* Creates a triangle from a latexdraw-SVG element.
* @param elt The source element.
* @since 2.0.0
*/
protected LTriangleSVGGenerator(final SVGGElement elt, final boolean withTransformation) {
this(ShapeFactory.createTriangle());
final SVGElement elt2 = getLaTeXDrawElement(elt, null);
if(elt==null || !(elt2 instanceof SVGPolygonElement))
throw new IllegalArgumentException();
final SVGPolygonElement main = (SVGPolygonElement)elt2;
setSVGLatexdrawParameters(elt);
setSVGParameters(main);
final List<Point2D> ptsPol = SVGPointsParser.getPoints(elt.getAttribute(
elt.getUsablePrefix(LNamespace.LATEXDRAW_NAMESPACE_URI)+LNamespace.XML_POINTS));
if(ptsPol==null || ptsPol.size()!=4)
throw new IllegalArgumentException();
shape.getPtAt(0).setPoint2D(ptsPol.get(0));
shape.getPtAt(1).setPoint2D(ptsPol.get(1));
shape.getPtAt(2).setPoint2D(ptsPol.get(2));
shape.getPtAt(3).setPoint2D(ptsPol.get(3));
setSVGShadowParameters(getLaTeXDrawElement(elt, LNamespace.XML_TYPE_SHADOW));
setSVGDbleBordersParameters(getLaTeXDrawElement(elt, LNamespace.XML_TYPE_DBLE_BORDERS));
if(withTransformation)
applyTransformations(elt);
// Managing inverted triangle.
if(ptsPol.get(0).getY()>ptsPol.get(2).getY())
shape.addToRotationAngle(null, Math.PI);
}
@Override
public SVGElement toSVG(final SVGDocument doc) {
if(doc==null || doc.getFirstChild().getDefs()==null)
return null;
final SVGElement root = new SVGGElement(doc);
SVGElement elt;
root.setAttribute(LNamespace.LATEXDRAW_NAMESPACE+':'+LNamespace.XML_TYPE, LNamespace.XML_TYPE_TRIANGLE);
root.setAttribute(SVGAttributes.SVG_ID, getSVGID());
final double gap = getPositionGap()/2.;
final IPoint pt1 = shape.getTopLeftPoint();
final IPoint pt2 = shape.getBottomRightPoint();
final IPoint p1 = ShapeFactory.createPoint((pt1.getX()+pt2.getX())/2., pt1.getY());
final IPoint p2 = ShapeFactory.createPoint(pt2.getX(), pt2.getY());
final IPoint p3 = ShapeFactory.createPoint(pt1.getX(), pt2.getY());
final double p1x = p1.getX();
final double p1y = p1.getY();
final double p2x = p2.getX();
final double p2y = p2.getY();
final double p3x = p3.getX();
double cornerGap1 = GLibUtilities.getCornerGap(ShapeFactory.createPoint(p1x, p2y), p1, p2, gap);
double cornerGap2 = GLibUtilities.getCornerGap(shape.getGravityCentre(), p2, p3, gap);
if(p2x>p3x)
cornerGap2*=-1;
if(p1y>p2y)
cornerGap1*=-1;
final String points = p1x + "," + (p1y - cornerGap1) + " " + //$NON-NLS-1$//$NON-NLS-2$
(p2x - cornerGap2) + "," + (p2y + (p1y<p2y ? gap : -gap)) + " " + //$NON-NLS-1$//$NON-NLS-2$
(p3x + cornerGap2) + "," + (p2y + (p1y<p2y ? gap : -gap));//$NON-NLS-1$
final String ltdPoints = pt1.getX() + " " + pt1.getY() + " " + shape.getPtAt(1).getX() + " " + shape.getPtAt(1).getY() +//$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$
" " + shape.getPtAt(2).getX() + " " + shape.getPtAt(2).getY() + " " + pt2.getX() + " " + pt2.getY();//$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$
if(shape.hasShadow()){
final SVGElement shad = new SVGPolygonElement(doc);
shad.setAttribute(SVGAttributes.SVG_POINTS, points);
setSVGShadowAttributes(shad, true);
root.appendChild(shad);
}
if(shape.hasShadow() && !shape.getLineStyle().getLatexToken().equals(PSTricksConstants.LINE_NONE_STYLE)) {
// The background of the borders must be filled is there is a shadow.
elt = new SVGPolygonElement(doc);
elt.setAttribute(SVGAttributes.SVG_POINTS, points);
setSVGBorderBackground(elt, root);
}
elt = new SVGPolygonElement(doc);
elt.setAttribute(SVGAttributes.SVG_POINTS, points);
root.appendChild(elt);
root.setAttribute(LNamespace.LATEXDRAW_NAMESPACE+':'+LNamespace.XML_POINTS, ltdPoints);
if(shape.hasDbleBord()){
final SVGElement dblBord = new SVGPolygonElement(doc);
dblBord.setAttribute(SVGAttributes.SVG_POINTS, points);
setSVGDoubleBordersAttributes(dblBord);
root.appendChild(dblBord);
}
setSVGAttributes(doc, elt, true);
setSVGRotationAttribute(root);
return root;
}
}