func (this *Geos) Prepare(geom *Geom) *PreparedGeom {
prep := C.GEOSPrepare_r(this.v, geom.v)
if prep == nil {
return nil
}
return &PreparedGeom{prep}
}
func cGEOSPrepare(g *C.GEOSGeometry) *C.GEOSPreparedGeometry {
handlemu.Lock()
defer handlemu.Unlock()
return C.GEOSPrepare_r(handle, g)
}