@Override
public void visit(LineString<P> geom) {
writeByteOrder(output);
writeTypeCodeAndSrid(geom, output);
if (geom.isEmpty()) {
output.putUInt(0);
} else {
output.putUInt(geom.getNumPositions());
writePoints(geom.getPositions(), geom.getCoordinateDimension(), output);
}
}
@Override
public void visit(GeometryCollection geom) {
writeByteOrder(output);
DimensionalFlag dimension = DimensionalFlag.valueOf(geom.is3D(), geom.isMeasured());
writeTypeCodeAndSrid(geom, dimension, output);
output.putUInt(geom.getNumGeometries());
}
@Override
public void visit(LineString geom) {
writeByteOrder(output);
DimensionalFlag dimension = DimensionalFlag.valueOf(geom.is3D(), geom.isMeasured());
writeTypeCodeAndSrid(geom, dimension, output);
output.putUInt(geom.getNumPoints());
writePoints(geom.getPoints(), geom.getCoordinateDimension(), output);
}
@Override
public void visit(PolyHedralSurface geom) {
writeByteOrder(output);
DimensionalFlag dimension = DimensionalFlag.valueOf(geom.is3D(), geom.isMeasured());
writeTypeCodeAndSrid(geom, dimension, output);
output.putUInt(geom.getNumPatches());
for (Polygon pg : geom) {
pg.accept(this);
}
}
protected void writeTypeCodeAndSrid(
Geometry geometry, DimensionalFlag dimension, ByteBuffer output) {
int typeCode = getGeometryType(geometry);
boolean hasSrid = (geometry.getSRID() > 0);
if (hasSrid && !hasWrittenSrid) typeCode |= PostgisWkbTypeMasks.SRID_FLAG;
if (dimension.isMeasured()) typeCode |= PostgisWkbTypeMasks.M_FLAG;
if (dimension.is3D()) typeCode |= PostgisWkbTypeMasks.Z_FLAG;
output.putUInt(typeCode);
if (hasSrid && !hasWrittenSrid) {
output.putInt(geometry.getSRID());
hasWrittenSrid = true;
}
}
@Override
public void visit(Polygon<P> geom) {
writeByteOrder(output);
writeTypeCodeAndSrid(geom, output);
if (geom.isEmpty()) {
output.putUInt(0);
} else {
writeNumRings(geom, output);
for (LinearRing<P> ring : geom) {
writeRing(ring);
}
}
}
private void writeNumRings(Polygon geom, ByteBuffer byteBuffer) {
byteBuffer.putUInt(geom.isEmpty() ? 0 : geom.getNumInteriorRing() + 1);
}
private void writeRing(LinearRing geom) {
output.putUInt(geom.getNumPoints());
writePoints(geom.getPoints(), geom.getCoordinateDimension(), output);
}
protected void writeNumRings(Polygon<P> geom, ByteBuffer byteBuffer) {
byteBuffer.putUInt(geom.isEmpty() ? 0 : geom.getNumInteriorRing() + 1);
}
protected void writeRing(LinearRing<P> geom) {
output.putUInt(geom.getNumPositions());
writePoints(geom.getPositions(), geom.getCoordinateDimension(), output);
}
@Override
public <G extends Geometry<P>> void visit(GeometryCollection<P, G> geom) {
writeByteOrder(output);
writeTypeCodeAndSrid(geom, output);
output.putUInt(geom.getNumGeometries());
}
protected void writeTypeCodeAndSrid(Geometry<P> geometry, ByteBuffer output) {
int typeCode = getGeometryType(geometry);
output.putUInt(typeCode);
}
