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git-svn-id: svn://192.168.0.80/JavaXT/javaxt-gis@31 2c7b0aa6-e0b2-3c4e-bb4a-8b65b6c465ff
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‎src/javaxt/cartography/RasterMap.java

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package javaxt.cartography;
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import java.io.*;
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import java.awt.image.*;
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import java.awt.*;
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import javax.imageio.*;
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import javax.imageio.stream.*;
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import javaxt.geospatial.geometry.Point;
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//******************************************************************************
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//** CreateMap Class - By Peter Borissow
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//******************************************************************************
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/**
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* Enter class description
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*
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******************************************************************************/
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public class RasterMap {
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private double ULx = 0;
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private double ULy = 0;
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private double resX = 1;
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private double resY = 1;
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private BufferedImage bufferedImage = null;
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Graphics2D g2d = null;
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//**************************************************************************
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//** Creates a new instance of CreateMap
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//**************************************************************************
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public RasterMap(double minX, double minY,
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double maxX, double maxY,
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int width, int height){
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//Create BufferedImage
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this.bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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//Initialize Variables
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init(minX, minY, maxX, maxY, bufferedImage);
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//Set default background and line color
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g2d.setColor(Color.WHITE);
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g2d.fillRect(0,0,width,height);
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g2d.setColor(Color.BLACK);
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}
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//**************************************************************************
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//** Creates a new instance of CreateMap
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//**************************************************************************
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public RasterMap(double minX, double minY,
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double maxX, double maxY,
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BufferedImage bufferedImage){
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this.bufferedImage = bufferedImage;
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//Initialize Variables
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init(minX, minY, maxX, maxY, bufferedImage);
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}
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//**************************************************************************
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//** Init
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//**************************************************************************
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private void init(double minX, double minY, double maxX, double maxY,
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BufferedImage bufferedImage){
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//Validate Coordinates
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if (validate(minX, minY, maxX, maxY)==false) return; //error?
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//Get Width/Height
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int width = bufferedImage.getWidth();
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int height = bufferedImage.getHeight();
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//Update min/max coordinates
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minX = x(minX);
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minY = y(minY);
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maxX = x(maxX);
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maxY = y(maxY);
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//Update Local Variables using updated values
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this.ULx = minX;
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this.ULy = maxY;
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//Compute pixelsPerDeg
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this.resX = ((double) width) / (maxX-minX);
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this.resY = ((double) height) / (minY-maxY);//(maxY-minY);
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//System.out.println("pixelsPerDeg = " + resX + ", " + resY);
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//Instantiate 2D Drawing Class
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this.g2d = bufferedImage.createGraphics();
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g2d.setColor(Color.BLACK);
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}
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//**************************************************************************
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//** Validate
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//**************************************************************************
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/** Used to validate coordinates used to invoke this class */
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private boolean validate(double minX, double minY, double maxX, double maxY){
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if (minX > maxX || minY > maxY) return false;
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if (minX < -180 || maxX < -180 || maxX > 180 || minX > 180) return false;
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if (minY < -90 || maxY < -90 || maxY > 90 || minY > 90) return false;
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return true;
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}
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//**************************************************************************
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//** X
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//**************************************************************************
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/** Used to convert longitude to pixel coordinates */
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private double x(double pt){
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pt += 180;
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double x = (pt - ULx) * resX;
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//System.out.println("X = " + x);
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return x;
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}
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private double x(String pt){
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return x(cdbl(pt));
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}
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//**************************************************************************
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//** Y
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//**************************************************************************
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/** Used to convert latitude to pixel coordinates */
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private double y(double pt){
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//System.out.print("Y = " + pt + " (");
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pt = -pt;
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if (pt<=0) pt = 90 + -pt;
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else pt = 90 - pt;
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pt = 180-pt;
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//System.out.print(pt + ")" + " (");
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double y = (pt - ULy) * resY;
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if (cint(y)==0 || cint(y)==-0) y = 0;
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//else y = -y;
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//System.out.println(y + ")");
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return y;
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}
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private double y(String pt){
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return y(cdbl(pt));
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}
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public void AddGraticule(double SpacingInDegrees){
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int spacing = 15; //degrees
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for (int i=0; i<=360; i++){
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int x = -(180-i);
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Insert(x + ",90 " + x + ",-90",null);
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i+=spacing-1;
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}
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for (int i=0; i<=90; i++){
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int y = i;
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Insert("-180," + y + " 180," + y,null);
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Insert("-180," + -y + " 180," + -y,null);
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i+=spacing-1;
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}
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}
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//**************************************************************************
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//** Insert
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//**************************************************************************
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/** Used to insert a "feature" into the map */
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public void Insert(Point[] Coordinates, Style style){
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}
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//**************************************************************************
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//** Insert
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//**************************************************************************
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/** Used to insert a "feature" into the map */
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public void Insert(String Coordinates, Style style){
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String cs = ",";
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String ts = " ";
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Insert(Coordinates, style, cs, ts);
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}
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public void Insert(String Coordinates, Style style, String cs, String ts){
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if (Coordinates==null) return;
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Coordinates = Coordinates.trim();
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String[] coords = Coordinates.split(ts);
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int numPoints = coords.length;
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int[] x = new int[numPoints];
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int[] y = new int[numPoints];
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for (int i=0; i<numPoints; i++){
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String[] pt = coords[i].split(cs);
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x[i] = cint(x(pt[0]));
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y[i] = cint(y(pt[1]));
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}
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if (coords.length==1){
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g2d.fillOval(cint(x(x[0])), cint(y(y[0])), 5, 5);
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}
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else{
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if (coords[0].equals(coords[coords.length-1])){
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g2d.drawPolygon(x, y, numPoints);
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}
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else{
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g2d.drawPolyline(x, y, numPoints);
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}
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}
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}
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//**************************************************************************
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//** getBufferedImage
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//**************************************************************************
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public BufferedImage getBufferedImage(double minX, double minY,
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double maxX, double maxY,
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int width, int height){
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minX = x(minX);
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minY = y(minY);
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maxX = x(maxX);
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maxY = y(maxY);
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int x = cint(minX);
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int y = cint(maxY);
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int w = cint(maxX)-x;
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int h = cint(minY)-y;
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//Crop the Map
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BufferedImage croppedImage = bufferedImage.getSubimage(x,y,w,h);
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return croppedImage;
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/*
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//Resize Cropped Map
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java.awt.Image scaledImage = croppedImage.getScaledInstance(width, height, BufferedImage.SCALE_SMOOTH);
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BufferedImage outputImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
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Graphics2D g2d = outputImage.createGraphics();
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g2d.drawImage(scaledImage, 0, 0, null);
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g2d.dispose();
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//Return Output
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return outputImage;
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*/
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}
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//**************************************************************************
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//** Save
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//**************************************************************************
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/** Used to save the map to an image file */
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public void Save(String PathToFile){
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try{
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//g2d.dispose();
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File File = new File(PathToFile);
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File.getParentFile().mkdirs();
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String FileName = File.getName();
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String FileExt = FileName.substring(FileName.lastIndexOf(".")+1,FileName.length());
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RenderedImage rendImage = bufferedImage;
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ImageIO.write(rendImage,FileExt,File);
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}
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catch (Exception e){
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//System.out.println(e.toString());
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}
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}
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public Style getStyle(){
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return new Style(g2d);
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}
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public BufferedImage getImage(){
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return bufferedImage;
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}
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//**************************************************************************
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//** String Conversions
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//**************************************************************************
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private int cint(String str){return Integer.valueOf(str).intValue(); }
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private int cint(Double d){ return (int)Math.round(d); }
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private double cdbl(String str){return Double.valueOf(str).doubleValue(); }
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}

‎src/javaxt/cartography/Style.java

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package javaxt.cartography;
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import java.awt.Color;
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import java.awt.Graphics2D;
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//******************************************************************************
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//** Style Class - By Peter Borissow
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//******************************************************************************
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/**
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* Enter class description
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*
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******************************************************************************/
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public class Style {
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private java.awt.Graphics2D g2d;
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//**************************************************************************
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//** Creates a new instance of Style
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//**************************************************************************
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public Style(java.awt.Graphics2D g2d){
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this.g2d = g2d;
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}
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//**************************************************************************
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//** getGraphics
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//**************************************************************************
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/** Used to retrieve the current graphics object */
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public java.awt.Graphics2D getGraphics(){
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return g2d;
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}
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//**************************************************************************
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//** setLineColor
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//**************************************************************************
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/** Set Active Line Color */
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public void setLineColor(int r, int g, int b){
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//g2d.setColor(Color.BLACK);
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Color myColor = new Color (r, g, b);
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g2d.setColor(myColor);
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}
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public void setLineWieght(){
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}
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public void setLineStyle(){
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}
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public void setFillColor(){
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}
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}

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