svn-gvsig-desktop / tags / v1_1_Build_1006 / libraries / libCq CMS for java.old / src / org / cresques / px / dxf / DxfEllipse.java @ 12458
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/*
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* Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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*
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* Copyright (C) 2004-5.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* cresques@gmail.com
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*/
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package org.cresques.px.dxf; |
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import org.cresques.cts.ICoordTrans; |
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import org.cresques.cts.IProjection; |
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import org.cresques.geo.ViewPortData; |
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import org.cresques.io.DxfGroup; |
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import org.cresques.px.Extent; |
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import java.awt.Color; |
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import java.awt.Graphics2D; |
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import java.awt.geom.GeneralPath; |
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import java.awt.geom.Point2D; |
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/**
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* Entidad ELLIPSE de un fichero DXF.
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* @author jmorell
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*/
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public class DxfEllipse extends DxfEntity { |
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final static Color baseColor = new Color(69, 106, 121); |
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//Vector points = null;
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GeneralPath gp = null; |
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boolean closed = true; |
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Point2D[] pts; |
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private double minorAxisLength; |
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private Point2D center; |
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private double minorToMajorAxisRatio; |
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private Color color = baseColor; //Color(255,214,132,255); |
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/**
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* Constructor de DxfEllipse.
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* @param proj, proyecci?n cartogr?fica en la que se encuentra el DxfEllipse.
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* @param layer, capa del DXF en la que se encuentra el DxfEllipse.
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* @param pt1, primer punto del semieje mayor.
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* @param pt2, segundo punto del semieje mayor.
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* @param minorAxisLength, longitud del semieje menor.
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*/
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public DxfEllipse(IProjection proj, DxfLayer layer, Point2D pt1, |
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Point2D pt2, double minorAxisLength) { |
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super(proj, layer);
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pts = new Point2D[2]; |
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pts[0] = pt1;
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pts[1] = pt2;
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this.minorAxisLength = minorAxisLength;
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extent = new Extent();
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for (int i = 0; i < pts.length; i++) { |
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extent.add(pts[i]); |
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} |
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center = new Point2D.Double((pts[0].getX() + pts[1].getX()) / 2.0, |
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(pts[0].getY() + pts[1].getY()) / 2.0); |
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double majorAxisLength = pt1.distance(pt2);
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//System.out.println("minorAxisLength = " + minorAxisLength);
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//System.out.println("majorAxisLength = " + majorAxisLength);
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minorToMajorAxisRatio = minorAxisLength / majorAxisLength; |
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} |
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/**
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* Devuelve el color del DxfEllipse.
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* @return Color
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*/
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public Color c() { |
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return color;
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} |
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/**
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* Establece el color del DxfEllipse.
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* @param color
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* @return Color
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*/
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public Color c(Color color) { |
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this.color = color;
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return color;
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} |
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/**
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* Permite reproyectar un DxfEllipse dado un conjunto de coordenadas de transformaci?n.
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* @param rp, coordenadas de transformaci?n.
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*/
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public void reProject(ICoordTrans rp) { |
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Point2D[] savePts = pts; |
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pts = new Point2D[savePts.length]; |
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extent = new Extent();
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Point2D ptDest = null; |
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for (int i = 0; i < savePts.length; i++) { |
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ptDest = rp.getPDest().createPoint(0.0, 0.0); |
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ptDest = rp.convert((Point2D) savePts[i], ptDest);
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this.pts[i] = ptDest;
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extent.add(ptDest); |
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} |
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setProjection(rp.getPDest()); |
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} |
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/**
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* Permite dibujar un DxfEllipse.
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*/
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public void draw(Graphics2D g, ViewPortData vp) { |
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//System.out.println("Va a pintar un circle");
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Color color = null; |
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if (dxfColor == AcadColor.BYLAYER) {
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//g.setColor(layer.getColor());
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color = layer.getColor(); |
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} else {
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//g.setColor(AcadColor.getColor(dxfColor));
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color = AcadColor.getColor(dxfColor); |
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} |
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newGP(vp); |
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if (closed) {
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g.setColor(new Color(color.getRed(), color.getBlue(), |
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color.getGreen(), 0x80));
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g.fill(gp); |
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} |
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g.setColor(color); |
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g.draw(gp); |
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} |
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/**
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* Permite generar un GeneralPath partiendo del array de Point2D que conforma el
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* DxfEllipse.
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* @param vp
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*/
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private void newGP(ViewPortData vp) { |
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//if (gp != null) return;
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gp = new GeneralPath(); |
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Point2D pt0 = null; |
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Point2D pt = null; |
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Point2D pt1 = null; |
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Point2D.Double ptTmp = new Point2D.Double(0.0, 0.0); |
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//System.out.println("pts.length = " + pts.length);
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for (int i = 0; i < pts.length; i++) { |
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pt1 = (Point2D) pts[i];
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vp.mat.transform(pt1, ptTmp); |
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if (pt0 == null) { |
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pt0 = ptTmp; |
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gp.moveTo((float) ptTmp.getX(), (float) ptTmp.getY()); |
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} else {
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gp.lineTo((float) ptTmp.getX(), (float) ptTmp.getY()); |
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} |
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} |
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if (closed) {
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gp.closePath(); |
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} |
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} |
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/**
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* Permite la escritura de entidades DxfEllipse en un fichero DXF2000.
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* @return String, la cadena que se escribir? en el fichero con la informaci?n
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* del DxfEllipse.
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*/
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public String toDxfString() { |
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StringBuffer sb = null; |
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sb = new StringBuffer(DxfGroup.toString(0, "ELLIPSE")); |
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sb.append(DxfGroup.toString(5, getHandle()));
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sb.append(DxfGroup.toString(100, "AcDbEntity")); |
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sb.append(DxfGroup.toString(8, layer.getName()));
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sb.append(DxfGroup.toString(62, dxfColor));
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sb.append(DxfGroup.toString(100, "AcDbEllipse")); |
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sb.append(DxfGroup.toString(10, getCenter().getX(), 6)); |
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sb.append(DxfGroup.toString(20, getCenter().getY(), 6)); |
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sb.append(DxfGroup.toString(30, 0.0, 6)); |
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sb.append(DxfGroup.toString(11, pts[1].getX() - getCenter().getX(), 6)); |
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sb.append(DxfGroup.toString(21, pts[1].getY() - getCenter().getY(), 6)); |
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sb.append(DxfGroup.toString(31, 0.0, 6)); |
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sb.append(DxfGroup.toString(40, getMinorToMajorAxisRatio(), 6)); |
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sb.append(DxfGroup.toString(41, 0.0, 6)); |
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sb.append(DxfGroup.toString(42, 2 * Math.PI, 6)); |
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return sb.toString();
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} |
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/**
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* Devuelve el array de puntos que conforman el DxfEllipse.
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* @return Point2D[], puntos del DxfEllipse.
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*/
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public Point2D[] getPts() { |
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return pts;
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} |
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/**
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* Devuelve el GeneralPath qie conforma el DxfEllipse.
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* @return GeneralPath del DxfEllipse.
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*/
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/*public GeneralPath getGeneralPath(ViewPort vp) {
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newGP(vp);
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return (GeneralPath) gp.clone();
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}*/
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/**
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* @return Returns the minorAxisLength.
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*/
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public double getMinorAxisLength() { |
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return minorAxisLength;
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} |
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/**
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* @param minorAxisLength The minorAxisLength to set.
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*/
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public void setMinorAxisLength(double minorAxisLength) { |
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this.minorAxisLength = minorAxisLength;
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} |
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/**
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* @param pts The pts to set.
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*/
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public void setPts(Point2D[] pts) { |
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this.pts = pts;
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} |
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/**
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* @return Returns the center.
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*/
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public Point2D getCenter() { |
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return center;
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} |
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/**
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* @param center The center to set.
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*/
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public void setCenter(Point2D center) { |
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this.center = center;
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} |
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/**
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* @return Returns the majorToMinorAxisRatio.
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*/
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public double getMinorToMajorAxisRatio() { |
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return minorToMajorAxisRatio;
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} |
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/**
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* @param majorToMinorAxisRatio The majorToMinorAxisRatio to set.
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*/
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public void setMinorToMajorAxisRatio(double majorToMinorAxisRatio) { |
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this.minorToMajorAxisRatio = majorToMinorAxisRatio;
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} |
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} |