svn-gvsig-desktop / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / ViewPort.java @ 918
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/* Generated by Together */
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package com.iver.cit.gvsig.fmap; |
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import java.awt.Color; |
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import java.awt.Dimension; |
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import java.awt.Point; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.NoninvertibleTransformException; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import java.util.ArrayList; |
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import org.cresques.cts.IProjection; |
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import org.cresques.cts.ProjectionPool; |
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import com.iver.utiles.StringUtilities; |
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import com.iver.utiles.XMLEntity; |
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public class ViewPort { |
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public static int KILOMETROS = 1; |
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public static int METROS = 2; |
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public static int MILLAS = 3; |
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public static int YARDAS = 4; |
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public static int PIES = 5; |
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public static int PULGADAS = 6; |
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/**
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* Resoluci?n (Puntos por pulgada) de la vista actual.
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* Se necesita para los c?lculos de escala geogr?fica.
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*/
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private static int dpi = java.awt.Toolkit.getDefaultToolkit().getScreenResolution(); |
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private Rectangle2D extent; |
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private Rectangle2D adjustedExtent; |
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private ExtentHistory extents = new ExtentHistory(); |
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private Dimension imageSize; |
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private AffineTransform trans = new AffineTransform(); |
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private int distanceUnits = METROS; |
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private int mapUnits = METROS; |
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private ArrayList extentListeners=new ArrayList(); |
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private Point2D offset = new Point2D.Double(0, 0); |
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private Rectangle2D clip; |
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private Color backColor = Color.WHITE; |
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private IProjection proj;
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private double dist1pixel; |
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private double dist3pixel; |
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private double scale; |
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public ViewPort(IProjection proj)
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{
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// Por defecto
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this.proj = proj;
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} |
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public boolean addExtentListener(ExtentListener arg0) { |
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return extentListeners.add(arg0);
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} |
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public boolean removeExtentListener(ExtentListener arg0) { |
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return extentListeners.remove(arg0);
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} |
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public int fromMapDistance(double d) { |
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Point2D.Double pWorld = new Point2D.Double(1, 1); |
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Point2D.Double pScreen = new Point2D.Double(); |
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double nuevoX;
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double nuevoY;
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double cX;
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double cY;
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try {
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trans.deltaTransform(pWorld, pScreen); |
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} catch (Exception e) { |
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System.err.print(e.getMessage());
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} |
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return (int) (d * pScreen.x); |
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} |
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public Point2D fromMapPoint(double x, double y) { |
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Point2D.Double pWorld = new Point2D.Double(x, y); |
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Point2D.Double pScreen = new Point2D.Double(); |
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double nuevoX;
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double nuevoY;
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double cX;
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double cY;
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try {
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trans.transform(pWorld, pScreen); |
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} catch (Exception e) { |
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System.err.print(e.getMessage());
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} |
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return pScreen;
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} |
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public Point2D toMapPoint(int x, int y) { |
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Point pScreen = new Point(x, y); |
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return toMapPoint(pScreen);
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} |
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public double toMapDistance(int d) { |
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double dist = d / trans.getScaleX();
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return dist;
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} |
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public Point2D toMapPoint(Point2D pScreen) { |
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Point2D.Double pWorld = new Point2D.Double(); |
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AffineTransform at;
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try {
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at = trans.createInverse(); |
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at.transform(pScreen, pWorld); |
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} catch (NoninvertibleTransformException e) { |
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throw new RuntimeException(e); |
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} |
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return pWorld;
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} |
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public void setPreviousExtent() { |
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} |
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public Rectangle2D getExtent() { |
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return extent;
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} |
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public void setExtent(Rectangle2D r) { |
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if (extent!=null){ |
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extents.put(extent); |
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} |
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//Esto comprueba que el extent no es de anchura o altura = "0"
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//y si es as? lo redimensiona.
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if (r.getWidth()==0 || r.getHeight()==0){ |
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extent=new Rectangle2D.Double(r.getMinX()-0.1,r.getMinY()-0.1,r.getWidth()+0.2,r.getHeight()+0.2); |
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}else{
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extent = r; |
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} |
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//Calcula la transformaci?n af?n
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calculateAffineTransform(); |
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// Lanzamos los eventos de extent cambiado
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callExtentListeners(adjustedExtent); |
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} |
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public void setScale(double scale) { |
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this.scale = scale;
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//Calcula la transformaci?n af?n
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calculateAffineTransform(); |
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// Lanzamos los eventos de extent cambiado
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callExtentListeners(adjustedExtent); |
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} |
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/**
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* Devuelve la escala. Debe estar siempre actualizada y
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* no calcularse nunca aqu? pues se utiliza en el dibujado
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* para cada geometr?a
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* @return
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*/
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public double getScale() { |
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return proj.getScale(extent.getMinX(), extent.getMaxX(), imageSize.getWidth(), dpi);
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} |
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/**
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* @return
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*/
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public AffineTransform getAffineTransform() { |
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return trans;
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} |
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/**
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* @return Returns the imageSize.
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*/
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public Dimension getImageSize() { |
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return imageSize;
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} |
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/**
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* @param imageSize The imageSize to set.
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*/
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public void setImageSize(Dimension imageSize) { |
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this.imageSize = imageSize;
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calculateAffineTransform(); |
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} |
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private void callExtentListeners(Rectangle2D newRect) { |
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ExtentEvent ev = new ExtentEvent(newRect);
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for (int i = 0; i < extentListeners.size(); i++) { |
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ExtentListener listener = (ExtentListener) extentListeners.get(i); |
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listener.extentChanged(ev); |
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} |
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} |
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/**
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*
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*/
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private void calculateAffineTransform() { |
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if ((imageSize == null) || (extent == null) |
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|| (imageSize.getWidth() <= 0) || (imageSize.getHeight() <=0)) return; |
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AffineTransform escalado = new AffineTransform(); |
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AffineTransform translacion = new AffineTransform(); |
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double escalaX;
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double escalaY;
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escalaX = imageSize.getWidth() / extent.getWidth(); |
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escalaY = imageSize.getHeight() / extent.getHeight(); |
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double xCenter = extent.getCenterX();
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double yCenter = extent.getCenterY();
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double newHeight, newWidth;
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adjustedExtent = new Rectangle2D.Double(); |
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if (escalaX < escalaY) {
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scale = escalaX; |
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newHeight = imageSize.getHeight() / scale; |
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adjustedExtent.setRect(xCenter - extent.getWidth()/2.0, yCenter - newHeight/2.0, extent.getWidth(), newHeight); |
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} else {
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scale = escalaY; |
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newWidth = imageSize.getWidth() / scale; |
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adjustedExtent.setRect(xCenter - newWidth/2.0, yCenter - extent.getHeight()/2.0, newWidth, extent.getHeight()); |
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} |
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translacion.setToTranslation(-adjustedExtent.getX(), -adjustedExtent.getY() - |
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adjustedExtent.getHeight()); |
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escalado.setToScale(scale, -scale); |
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AffineTransform offsetTrans = new AffineTransform(); |
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offsetTrans.setToTranslation(offset.getX(), offset.getY()); |
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trans.setToIdentity(); |
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trans.concatenate(offsetTrans); |
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trans.concatenate(escalado); |
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trans.concatenate(translacion); |
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// Calculamos las distancias de 1 pixel y 3 pixel con esa transformaci?n
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// de coordenadas, de forma que est?n precalculadas para cuando las necesitemos
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AffineTransform at;
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try {
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at = trans.createInverse(); |
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java.awt.Point pPixel = new java.awt.Point(1, 1); |
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Point2D.Float pProv = new Point2D.Float(); |
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at.deltaTransform(pPixel, pProv); |
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dist1pixel = pProv.x; |
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dist3pixel = 3 * pProv.x;
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} catch (NoninvertibleTransformException e) { |
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System.err.println("transformada afin = " + trans.toString()); |
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System.err.println("extent = " + extent.toString() + " imageSize= " + imageSize.toString()); |
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throw new RuntimeException(e); |
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} |
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} |
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public void setOffset(Point2D p){ |
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offset=p; |
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} |
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public void setBackColor(Color c) { |
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backColor = c; |
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} |
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public Color getBackColor() { |
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return backColor;
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} |
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/**
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* @return Returns the adjustedExtent.
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*/
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public Rectangle2D getAdjustedExtent() { |
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return adjustedExtent;
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} |
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/**
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* @return Returns the distanceUnits.
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*/
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public int getDistanceUnits() { |
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return distanceUnits;
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} |
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/**
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* @param distanceUnits The distanceUnits to set.
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*/
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public void setDistanceUnits(int distanceUnits) { |
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this.distanceUnits = distanceUnits;
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} |
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/**
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* @return Returns the mapUnits.
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*/
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public int getMapUnits() { |
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return mapUnits;
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} |
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/**
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* @param mapUnits The mapUnits to set.
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*/
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public void setMapUnits(int mapUnits) { |
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this.mapUnits = mapUnits;
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} |
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public int getImageWidth(){ |
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return imageSize.width;
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} |
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public int getImageHeight(){ |
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return imageSize.height;
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} |
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public double getDist1pixel() { |
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return dist1pixel;
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} |
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public void setDist1pixel(double dist1pixel) { |
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this.dist1pixel = dist1pixel;
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} |
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public double getDist3pixel() { |
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return dist3pixel;
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} |
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public void setDist3pixel(double dist3pixel) { |
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this.dist3pixel = dist3pixel;
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} |
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/**
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* @return Returns the extents.
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*/
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public ExtentHistory getExtents() {
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return extents;
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} |
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/**
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*
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*/
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public void setExtentPrev() { |
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extent = extents.removePrev(); |
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//Calcula la transformaci?n af?n
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calculateAffineTransform(); |
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// Lanzamos los eventos de extent cambiado
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callExtentListeners(adjustedExtent); |
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} |
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/**
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* @return Returns the proj.
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*/
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public IProjection getProjection() {
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return proj;
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} |
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/**
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* @param proj The proj to set.
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*/
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public void setProjection(IProjection proj) { |
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this.proj = proj;
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} |
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public XMLEntity getXMLEntity(){
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XMLEntity xml=new XMLEntity();
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if (adjustedExtent != null){ |
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xml.putProperty("adjustedExtentX",adjustedExtent.getX());
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xml.putProperty("adjustedExtentY",adjustedExtent.getY());
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xml.putProperty("adjustedExtentW",adjustedExtent.getWidth());
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xml.putProperty("adjustedExtentH",adjustedExtent.getHeight());
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} |
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xml.putProperty("backColor",StringUtilities.color2String(backColor));
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if (clip!=null){ |
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xml.putProperty("clipX",clip.getX());
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xml.putProperty("clipY",clip.getY());
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xml.putProperty("clipW",clip.getWidth());
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xml.putProperty("clipH",clip.getHeight());
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} |
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xml.putProperty("dist1pixel",dist1pixel);
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xml.putProperty("dist3pixel",dist3pixel);
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xml.putProperty("distanceUnits",distanceUnits);
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if (extent!=null){ |
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xml.putProperty("extentX",extent.getX());
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xml.putProperty("extentY",extent.getY());
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xml.putProperty("extentW",extent.getWidth());
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xml.putProperty("extentH",extent.getHeight());
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} |
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xml.addChild(extents.getXMLEntity()); |
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xml.putProperty("mapUnits",mapUnits);
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xml.putProperty("offsetX",offset.getX());
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xml.putProperty("offsetY",offset.getY());
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if (proj!=null){ |
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xml.putProperty("proj",proj.getAbrev());
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} |
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xml.putProperty("scale",scale);
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return xml;
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} |
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public static ViewPort createFromXML(XMLEntity xml){ |
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ViewPort vp=new ViewPort(null); |
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if (xml.contains("adjustedExtentX")){ |
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vp.adjustedExtent=new Rectangle2D.Double(xml.getDoubleProperty("adjustedExtentX"),xml.getDoubleProperty("adjustedExtentY"),xml.getDoubleProperty("adjustedExtentW"),xml.getDoubleProperty("adjustedExtentH")); |
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} |
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if (xml.contains("backColor")){ |
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vp.setBackColor(StringUtilities.string2Color(xml.getStringProperty("backColor")));
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} |
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if (xml.contains("clipX")){ |
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vp.clip=new Rectangle2D.Double(xml.getDoubleProperty("clipX"),xml.getDoubleProperty("clipY"),xml.getDoubleProperty("clipW"),xml.getDoubleProperty("clipH")); |
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} |
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vp.setDist1pixel(xml.getDoubleProperty("dist1pixel"));
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vp.setDist3pixel(xml.getDoubleProperty("dist3pixel"));
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vp.setDistanceUnits(xml.getIntProperty("distanceUnits"));
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vp.extents=ExtentHistory.createFromXML(xml.getChild(0));
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if (xml.contains("extentX")){ |
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vp.setExtent(new Rectangle2D.Double(xml.getDoubleProperty("extentX"),xml.getDoubleProperty("extentY"),xml.getDoubleProperty("extentW"),xml.getDoubleProperty("extentH"))); |
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//Calcula la transformaci?n af?n
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vp.calculateAffineTransform(); |
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// Lanzamos los eventos de extent cambiado
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vp.callExtentListeners(vp.adjustedExtent); |
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} |
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vp.setMapUnits(xml.getIntProperty("mapUnits"));
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vp.setOffset(new Point2D.Double(xml.getDoubleProperty("offsetX"),xml.getDoubleProperty("offsetY"))); |
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if (xml.contains("proj")){ |
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vp.proj=ProjectionPool.get(xml.getStringProperty("proj"));
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} |
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vp.setScale(xml.getDoubleProperty("scale"));
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return vp;
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} |
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public ViewPort cloneViewPort(){
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return createFromXML(getXMLEntity());
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} |
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public String toString() |
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{
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String str;
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str = "Datos del viewPort:\nExtent=" + extent +
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"\nadjustedExtent=" + adjustedExtent +
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"\nimageSize=" + imageSize +
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"\nescale=" + scale +
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"\ntrans=" + trans;
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return str;
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} |
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} |