public static void computeDistance(Geometry geom, Coordinate pt, PointPairDistance ptDist) {
if (geom instanceof LineString) {
computeDistance((LineString) geom, pt, ptDist);
} else if (geom instanceof Polygon) {
computeDistance((Polygon) geom, pt, ptDist);
} else if (geom instanceof GeometryCollection) {
GeometryCollection gc = (GeometryCollection) geom;
for (int i = 0; i < gc.getNumGeometries(); i++) {
Geometry g = gc.getGeometryN(i);
computeDistance(g, pt, ptDist);
}
} else { // assume geom is Point
ptDist.setMinimum(geom.getCoordinate(), pt);
}
}
