// Its FShape and not FPolygon2D because FPolygon2DM returns a FPolyline
private FShape parseMultiPolygon(ByteBuffer data) {
// it was expected not to find polygons with different srid or
// coordiante dimension as subelements of the multipolygon
// PostGIS avoid this behaviour, but OGC says it is allow.
int count = data.getInt();
GeneralPathX gp = new GeneralPathX();
List<Double> d3 = null;
int nDims = 2;
if (gHaveZ || gHaveM) nDims = 3;
if (nDims == 3) d3 = new ArrayList<Double>();
for (int i = 0; i < count; i++) {
parseTypeAndSRID(data);
int countRings = data.getInt();
for (int j = 0; j < countRings; j++) {
FPoint2D[] points = parsePointArray(data, gHaveZ, gHaveM);
for (int k = 0; k < points.length; k++) {
if (k == points.length - 1) {
gp.closePath();
if (nDims == 3) {
if (gHaveZ) d3.add(((FPoint3D) points[0]).getZ());
else if (gHaveM) d3.add(((FPoint2DM) points[0]).getM());
else d3.add(0.0); // child does not have 3 dimensions
}
} else {
// parent has 3 dimensions
if (nDims == 3) {
if (gHaveZ) d3.add(((FPoint3D) points[k]).getZ());
else if (gHaveM) d3.add(((FPoint2DM) points[k]).getM());
else d3.add(0.0); // child does not have 3 dimensions
}
if (k == 0) gp.moveTo(points[k].getX(), points[k].getY());
else gp.lineTo(points[k].getX(), points[k].getY());
}
}
}
}
if (nDims == 3) {
double ad3[] = new double[d3.size()];
for (int i = 0; i < d3.size(); i++) {
ad3[i] = ((Double) d3.get(i)).doubleValue();
}
if (gHaveZ) return new FPolygon3D(gp, ad3);
else return new FPolygon2DM(gp, ad3);
}
return new FPolygon2D(gp);
}
private FShape parsePolygon(ByteBuffer data, boolean haveZ, boolean haveM) {
GeneralPathX gp = new GeneralPathX();
List<Double> d3 = null;
int nDims = 2;
if (gHaveZ || gHaveM) nDims = 3;
if (nDims == 3) d3 = new ArrayList<Double>();
int countRings = data.getInt();
for (int j = 0; j < countRings; j++) {
FPoint2D[] points = parsePointArray(data, gHaveZ, gHaveM);
for (int k = 0; k < points.length; k++) {
if (k == points.length - 1) {
gp.closePath();
if (nDims == 3) {
if (gHaveZ) d3.add(((FPoint3D) points[0]).getZ());
else if (gHaveM) d3.add(((FPoint2DM) points[0]).getM());
else d3.add(0.0); // child does not have 3 dimensions
}
} else {
// parent has 3 dimensions
if (nDims == 3) {
if (gHaveZ) d3.add(((FPoint3D) points[k]).getZ());
else if (gHaveM) d3.add(((FPoint2DM) points[k]).getM());
else d3.add(0.0); // child does not have 3 dimensions
}
if (k == 0) gp.moveTo(points[k].getX(), points[k].getY());
else gp.lineTo(points[k].getX(), points[k].getY());
}
}
}
if (nDims == 3) {
double ad3[] = new double[d3.size()];
for (int i = 0; i < d3.size(); i++) {
ad3[i] = ((Double) d3.get(i)).doubleValue();
}
if (gHaveZ) return new FPolygon3D(gp, ad3);
else return new FPolygon2DM(gp, ad3);
}
return new FPolygon2D(gp);
}