/**
* Removes the common coordinate bits from a Geometry. The coordinates of the Geometry are
* changed.
*
* @param geom the Geometry from which to remove the common coordinate bits
* @return the shifted Geometry
*/
public Geometry removeCommonBits(Geometry geom) {
if (commonCoord.x == 0.0 && commonCoord.y == 0.0) return geom;
Coordinate invCoord = new Coordinate(commonCoord);
invCoord.x = -invCoord.x;
invCoord.y = -invCoord.y;
Translater trans = new Translater(invCoord);
geom.apply(trans);
geom.geometryChanged();
return geom;
}
public void testInvalidateEnvelope() throws Exception {
Geometry g = reader.read("POLYGON ((0 0, 0 50, 50 50, 50 0, 0 0))");
assertEquals(new Envelope(0, 50, 0, 50), g.getEnvelopeInternal());
g.apply(
new CoordinateFilter() {
public void filter(Coordinate coord) {
coord.x += 1;
coord.y += 1;
}
});
assertEquals(new Envelope(0, 50, 0, 50), g.getEnvelopeInternal());
g.geometryChanged();
assertEquals(new Envelope(1, 51, 1, 51), g.getEnvelopeInternal());
}
/**
* Adds the common coordinate bits back into a Geometry. The coordinates of the Geometry are
* changed.
*
* @param geom the Geometry to which to add the common coordinate bits
* @return the shifted Geometry
*/
public void addCommonBits(Geometry geom) {
Translater trans = new Translater(commonCoord);
geom.apply(trans);
geom.geometryChanged();
}
