Revision 2669 branches/CqCMSDvp/libraries/libCq CMS for java.old/src/org/cresques/geo/Polygon2D.java
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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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* 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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* 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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* |
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* cresques@gmail.com |
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*/ |
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package org.cresques.geo; |
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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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import java.util.Iterator; |
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import java.util.Vector; |
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/** |
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* Clase que representa un pol?gono 2D |
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* @author "Luis W. Sevilla" <sevilla_lui@gva.es> |
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*/ |
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public class Polygon2D extends Vector {
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GeneralPath gp = null; |
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public Polygon2D() {
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super(); |
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gp = null; |
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} |
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/** |
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* A?ade un vertice al po??gono |
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* @param pt punto 2D que representa el vertice a?adido |
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*/ |
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public void addPoint(Point2D pt) {super.add(pt);}
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/** |
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* Dibuja el pol?gono |
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* @param g Graphics sobre el que dibuja |
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* @param vp ViewPort con la vista |
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*/ |
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public void draw(Graphics2D g, ViewPortData vp) {
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newGP(vp); |
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g.draw(gp); |
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//g.draw(new Line2D.Double(pt,pt0)); |
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} |
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/** |
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* |
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* @param g |
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* @param vp |
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*/ |
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public void fill(Graphics2D g, ViewPortData vp) {
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newGP(vp); |
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g.fill(gp); |
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} |
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/** |
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* |
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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, pt=null, pt1=null; |
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Point2D.Double ptTmp = new Point2D.Double(0.0, 0.0); |
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Iterator iter = iterator(); |
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while (iter.hasNext()) {
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pt1 = (Point2D) iter.next(); |
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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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gp.closePath(); |
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} |
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} |
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GeneralPath gp = null; |
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public Polygon2D() {
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super(); |
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gp = null; |
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} |
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/** |
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* A?ade un vertice al po??gono |
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* @param pt punto 2D que representa el vertice a?adido |
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*/ |
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public void addPoint(Point2D pt) {
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super.add(pt); |
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} |
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/** |
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* Dibuja el pol?gono |
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* @param g Graphics sobre el que dibuja |
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* @param vp ViewPort con la vista |
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*/ |
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public void draw(Graphics2D g, ViewPortData vp) {
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newGP(vp); |
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g.draw(gp); |
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//g.draw(new Line2D.Double(pt,pt0)); |
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} |
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/** |
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* |
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* @param g |
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* @param vp |
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*/ |
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public void fill(Graphics2D g, ViewPortData vp) {
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newGP(vp); |
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g.fill(gp); |
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} |
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/** |
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* |
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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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Iterator iter = iterator(); |
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while (iter.hasNext()) {
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pt1 = (Point2D) iter.next(); |
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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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gp.closePath(); |
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} |
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} |
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