| gvSIG desktop 1

package org.cresques.geo;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.geom.Point2D;

import org.cresques.cts.IDatum;

import org.cresques.cts.IProjection;

abstract public class Projection implements IProjection {

        public static int NORTH = 0;

        public static int SOUTH = 1;

        static String name = "Sin Proyeccion";

        static String abrev = "None";

        private static final Color basicGridColor = new Color(64,64,64,128);

        Color gridColor = basicGridColor;

        Ellipsoid eli = Ellipsoid.hayford;

        Graticule grid;

        public Projection() {

                eli = Ellipsoid.hayford;

        }

        public Projection(Ellipsoid e) {

                eli = e;

        }

        public String getName() { return name;        }

        abstract public String getAbrev();

        public IDatum getDatum() { return eli; }

        public double [] getElliPar() { return eli.getParam(); }

        abstract public Point2D createPoint(double x, double y);

        public Point2D createPoint(Point2D pt) { 

                return createPoint(pt.getX(), pt.getY());

        }

        public static IProjection getProjectionByName(IDatum eli, String name) {

                if (name.indexOf("UTM") >= 0)

                        return UtmZone.getProjectionByName(eli, name);

                if (name.indexOf("GEO") >= 0)

                        return Geodetic.getProjectionByName(eli, name);

                if (name.indexOf("MERC") >= 0)

                        return Mercator.getProjectionByName(eli, name);

                return null;

        }

        public ReProjection getReproyectionTo(Projection proj) {

                ReProjection rp = new ReProjection(this, proj);

                return rp;

        }

        abstract public Point2D toGeo(Point2D pt);

        abstract public Point2D fromGeo(Point2D gPt, Point2D mPt);

        public void setGridColor(Color c) { gridColor = c;}

        public Color getGridColor() { return gridColor;        }

        public static String coordToString(double coord, String fmt, boolean isLat) {

                String txt = fmt;

                int donde;

                donde = txt.indexOf("%G");

                if (donde >= 0) {

                        int deg = (int) coord;

                        if (fmt.indexOf("%N") >= 0 && deg < 0) deg = -deg;

                        txt = txt.substring(0, donde)+Integer.toString(deg)+txt.substring(donde+2);

                }

                donde = txt.indexOf("%M");

                if (donde >= 0) {

                        int min = (int) ((coord - (int)coord)*60.0) % 60;

                        if (fmt.indexOf("%N") >= 0 && min < 0) min = -min;

                        txt = txt.substring(0, donde)+Integer.toString(min)+txt.substring(donde+2);;

                }

                donde = txt.indexOf("%N");

                if (donde >= 0) {

                        String t = "";

                        if (isLat) {

                                if (coord > 0)                t = "N";

                                else if (coord < 0) t = "S";

                        } else {

                                if (coord > 0)                t = "E";

                                else if (coord < 0) t = "W";

                        }

                        txt = txt.substring(0, donde)+t+txt.substring(donde+2);;

                }

                return txt;

        }

        abstract public void drawGrid(Graphics2D g, ViewPortData vp);

}