package com.esri.core.geometry.ogc;
import com.esri.core.geometry.Geometry;
import com.esri.core.geometry.GeometryEngine;
import com.esri.core.geometry.MultiPath;
import com.esri.core.geometry.Operator;
import com.esri.core.geometry.OperatorExportToWkb;
import com.esri.core.geometry.OperatorFactoryLocal;
import com.esri.core.geometry.Polyline;
import com.esri.core.geometry.SpatialReference;
import com.esri.core.geometry.WkbExportFlags;
import com.esri.core.geometry.WktExportFlags;
import java.nio.ByteBuffer;
public class OGCLineString extends OGCCurve {
/**
* The number of Points in this LineString.
*/
public int numPoints() {
if (multiPath.isEmpty())
return 0;
int d = multiPath.isClosedPath(0) ? 1 : 0;
return multiPath.getPointCount() + d;
}
@Override
public String asText() {
return GeometryEngine.geometryToWkt(getEsriGeometry(),
WktExportFlags.wktExportLineString);
}
@Override
public ByteBuffer asBinary() {
OperatorExportToWkb op = (OperatorExportToWkb) OperatorFactoryLocal
.getInstance().getOperator(Operator.Type.ExportToWkb);
return op.execute(WkbExportFlags.wkbExportLineString,
getEsriGeometry(), null);
}
/**
* Returns the specified Point N in this LineString.
* @param n The 0 based index of the Point.
*/
public OGCPoint pointN(int n) {
int nn;
if (multiPath.isClosedPath(0) && n == multiPath.getPathSize(0)) {
nn = multiPath.getPathStart(0);
} else
nn = n + multiPath.getPathStart(0);
return (OGCPoint) OGCGeometry.createFromEsriGeometry(
multiPath.getPoint(nn), esriSR);
}
@Override
public boolean isClosed() {
return multiPath.isClosedPathInXYPlane(0);
}
public OGCLineString(MultiPath mp, int pathIndex, SpatialReference sr) {
multiPath = new Polyline();
if (!mp.isEmpty())
multiPath.addPath(mp, pathIndex, true);
esriSR = sr;
}
public OGCLineString(MultiPath mp, int pathIndex, SpatialReference sr,
boolean reversed) {
multiPath = new Polyline();
if (!mp.isEmpty())
multiPath.addPath(mp, pathIndex, !reversed);
esriSR = sr;
}
@Override
public double length() {
return multiPath.calculateLength2D();
}
@Override
public OGCPoint startPoint() {
return pointN(0);
}
@Override
public OGCPoint endPoint() {
return pointN(numPoints() - 1);
}
@Override
public String geometryType() {
return "LineString";
}
@Override
public OGCGeometry locateAlong(double mValue) {
throw new UnsupportedOperationException();
}
@Override
public OGCGeometry locateBetween(double mStart, double mEnd) {
throw new UnsupportedOperationException();
}
@Override
public Geometry getEsriGeometry() {
return multiPath;
}
MultiPath multiPath;
}