Revision 472 org.gvsig.proj/trunk/org.gvsig.proj/org.gvsig.proj.lib/org.gvsig.proj.lib.api/src/main/java/org/gvsig/proj/cts/DefaultIProjection.java
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import org.gvsig.proj.CoordinateTransformation; |
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/** |
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* Java Map CoordinateReferenceSystem Library based implementation. It works |
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* as a facade over a {@link CoordinateReferenceSystem} object.
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*
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* Java Map CoordinateReferenceSystem Library based implementation. It works as
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* a facade over a {@link CoordinateReferenceSystem} object.
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* |
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* @author gvSIG Team |
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*/ |
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public class DefaultIProjection implements IProjection {
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/** |
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* Creates a {@link DefaultIProjection} with an authority name and CRS code.
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* |
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* @param authorityName |
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* name of the authority which defined the CRS. |
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* @param code |
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* of the defined CRS represented by this object |
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* @throws CoordinateReferenceSystemNotFoundException |
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* if a CRS with the |
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* given authority name and code could not be found in the |
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* system |
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* |
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* @param authorityName name of the authority which defined the CRS. |
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* @param code of the defined CRS represented by this object |
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* @throws CoordinateReferenceSystemNotFoundException if a CRS with the |
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* given authority name and code could not be found in the system |
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*/ |
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public DefaultIProjection(String authorityName, String code) |
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throws CoordinateReferenceSystemNotFoundException {
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throws CoordinateReferenceSystemNotFoundException {
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this(CoordinateReferenceSystemLocator.getManager() |
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.getCoordinateReferenceSystem(authorityName, code)); |
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.getCoordinateReferenceSystem(authorityName, code));
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} |
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/** |
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*
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* |
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* @param crs |
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*/ |
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public DefaultIProjection(CoordinateReferenceSystem crs) {
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public double getEIFlattening() {
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return getCoordinateReferenceSystem().getDatum().getEllipsoid() |
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.getReciprocalFlattening(); |
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.getReciprocalFlattening();
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} |
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public double getESemiMajorAxis() {
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return getCoordinateReferenceSystem().getDatum().getEllipsoid() |
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.getSemiMajorAxis(); |
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.getSemiMajorAxis();
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} |
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}; |
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public Point2D toGeo(Point2D pt) {
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CoordinateReferenceSystem geographic = crs.createGeographic(); |
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CoordinateTransformation transfToGeo =
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crs.getTransformation(geographic); |
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CoordinateTransformation transfToGeo |
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= crs.getTransformation(geographic);
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double[] coords = new double[] { pt.getX(), pt.getY() };
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double[] coords = new double[]{pt.getX(), pt.getY()};
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transfToGeo.convert(coords); |
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return new Point2D.Double(coords[0], coords[1]); |
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} |
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public Point2D fromGeo(Point2D gPt, Point2D mPt) {
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CoordinateReferenceSystem geographic = crs.createGeographic(); |
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CoordinateTransformation transfFromGeo =
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geographic.getTransformation(crs); |
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CoordinateTransformation transfFromGeo |
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= geographic.getTransformation(crs);
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double[] coords = new double[] { gPt.getX(), gPt.getY() };
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double[] coords = new double[]{gPt.getX(), gPt.getY()};
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transfFromGeo.convert(coords); |
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mPt.setLocation(coords[0], coords[1]); |
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return mPt; |
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public double getScale(double minX, double maxX, double width, double dpi) {
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double scale = ((maxX - minX) * // metros |
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(dpi / 2.54 * 100.0)) |
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/ // px / metro |
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width; // pixels |
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(dpi / 2.54 * 100.0))
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/ // px / metro
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width; // pixels
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return scale; |
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} |
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public Rectangle2D getExtent(Rectangle2D extent, double scale, |
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double wImage, double hImage, double mapUnits, double distanceUnits, |
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double dpi) {
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double wImage, double hImage, double mapUnits, double distanceUnits,
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double dpi) {
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// Code copied from the org.gvsig.crs.Crs class. |
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// I think this calculation might be moved outside the projection |
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double xExtent = extent.getCenterX() - wExtent / 2; |
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double yExtent = extent.getCenterY() - hExtent / 2; |
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Rectangle2D rec =
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new Rectangle2D.Double(xExtent, yExtent, wExtent, hExtent); |
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Rectangle2D rec |
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= new Rectangle2D.Double(xExtent, yExtent, wExtent, hExtent);
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return rec; |
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} |
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public Object clone() throws CloneNotSupportedException {
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DefaultIProjection cloned = (DefaultIProjection) super.clone(); |
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cloned.crs =
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(CoordinateReferenceSystem) this.getCoordinateReferenceSystem() |
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cloned.crs |
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= (CoordinateReferenceSystem) this.getCoordinateReferenceSystem()
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.clone(); |
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return cloned; |
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} |
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public String toString() {
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return crs.toString(); |
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} |
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public String export(String format) {
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throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
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} |
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public boolean equals(Object obj) {
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if (this == obj) {
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return true; |
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} |
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if (!(obj instanceof DefaultIProjection)) {
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return false; |
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} |
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return this.getFullCode().equalsIgnoreCase(((DefaultIProjection) obj).getFullCode()); |
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} |
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public int hashCode() {
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return this.getFullCode().hashCode(); |
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} |
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} |
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