| [jts-dev] Intersection of geometries with different dimensions |
Hi JTS devs
I've had a problem doing a re-projection on a geometry that was the result of an intersection. The problem seems to be because the geometry has a mixed bag of coordinate types. Some are Coordinate, others are CoordinateXYZM.
Looking at https://github.com/locationtech/jts/issues/375 it looks like all the coordinates should be the same type. I'm I correct there?
I made a quick test to show the mixed coordinate types following an intersection operation
@Test
public void intersectionPolygonsDifferenctDimensions() {
Polygon p1 = gf.createPolygon(new Coordinate[]{
new Coordinate(100, 100),
new Coordinate(200, 100),
new Coordinate(200, 200),
new Coordinate(100, 200),
new Coordinate(100, 100)
});
Polygon p2 = gf.createPolygon(new Coordinate[]{
new CoordinateXYZM(100, 100, 0, 0),
new CoordinateXYZM(150, 100, 0, 0),
new CoordinateXYZM(150, 150, 0, 0),
new CoordinateXYZM(100, 150, 0, 0),
new CoordinateXYZM(100, 100, 0, 0)
});
Geometry intersection = OverlayNG.overlay(p2, p1,
INTERSECTION);
Map<Class, Integer> coordinateTypes = new
HashMap<>();
for (Coordinate c: intersection.getCoordinates()) {
coordinateTypes.merge(c.getClass(), 1, (e, v) -> e +
v);
}
for (Map.Entry<Class, Integer> found:
coordinateTypes.entrySet()) {
System.out.format("%d, %s%n", found.getValue(),
found.getKey().getSimpleName());
}
}
Regards Glenn