// **********************************************************************
//
// <copyright>
//
// BBN Technologies
// 10 Moulton Street
// Cambridge, MA 02138
// (617) 873-8000
//
// Copyright (C) BBNT Solutions LLC. All rights reserved.
//
// </copyright>
// **********************************************************************
//
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/dataAccess/shape/EsriPolygon.java,v $
// $RCSfile: EsriPolygon.java,v $
// $Revision: 1.6.2.3 $
// $Date: 2006/08/24 20:56:32 $
// $Author: dietrick $
//
// **********************************************************************
package com.bbn.openmap.dataAccess.shape;
import com.bbn.openmap.omGraphics.DrawingAttributes;
import com.bbn.openmap.omGraphics.OMGraphic;
import com.bbn.openmap.omGraphics.OMPoly;
import com.bbn.openmap.proj.ProjMath;
/**
* An extension to OMPoly for polygons that typecasts a specific Esri graphic
* type. Used to ensure that all OMGraphics added to a EsriGraphicList is of the
* same type.
*
* @author Doug Van Auken
*/
public class EsriPolygon extends OMPoly implements Cloneable, EsriGraphic {
protected float[] extents;
public EsriPolygon(float[] points, int units, int lineType) {
super(points, units, lineType);
}
/**
* The lat/lon extent of the EsriGraphic, assumed to contain miny, minx,
* maxy maxx in order of the array.
*/
public void setExtents(float[] extents) {
this.extents = extents;
}
/**
* The lat/lon extent of the EsriGraphic, returned as miny, minx, maxy maxx
* in order of the array.
*/
public float[] getExtents() {
if (extents == null) {
// These are set to their opposites to guarantee some
// movement.
extents = new float[] { 90f, 180f, -90f, -180f };
float[] points = super.getLatLonArray();
float[] degreePoints = new float[points.length];
System.arraycopy(points, 0, degreePoints, 0, points.length);
addExtents(ProjMath.arrayRadToDeg(degreePoints));
}
return extents;
}
/** No-op. */
public void setType(int t) {}
public int getType() {
return SHAPE_TYPE_POLYGON;
}
public void addExtents(float[] graphicExtents) {
float[] ex = getExtents();
// Check both graphic extents in case they are inadvertently
// switched.
for (int i = 0; i < graphicExtents.length; i += 2) {
if (ex[0] > graphicExtents[i])
ex[0] = graphicExtents[i];
if (ex[1] > graphicExtents[i + 1])
ex[1] = graphicExtents[i + 1];
if (ex[2] < graphicExtents[i])
ex[2] = graphicExtents[i];
if (ex[3] < graphicExtents[i + 1])
ex[3] = graphicExtents[i + 1];
}
// System.out.println("extents of Polygon: " +
// ex[1] + ", " +
// ex[0] + ", " +
// ex[3] + ", " +
// ex[2]);
}
public static EsriPolygon convert(OMPoly ompoly) {
if (ompoly.getRenderType() == RENDERTYPE_LATLON) {
float[] rawLL = ompoly.getLatLonArray();
float[] degreePoints = new float[rawLL.length];
System.arraycopy(rawLL, 0, degreePoints, 0, rawLL.length);
EsriPolygon ePoly = new EsriPolygon(degreePoints, OMGraphic.RADIANS, ompoly.getLineType());
DrawingAttributes attributes = new DrawingAttributes();
attributes.setFrom(ompoly);
attributes.setTo(ePoly);
ePoly.setAttributes(ompoly.getAttributes());
ePoly.setIsPolygon(true);
return ePoly;
} else {
return null;
}
}
public EsriGraphic shallowCopy() {
return shallowCopyPolygon();
}
public EsriPolygon shallowCopyPolygon() {
return (EsriPolygon) clone();
}
}