Function spatialite_sys::gaiaAllocPolygonXYM

pub unsafe extern "C" fn gaiaAllocPolygonXYM(
    vert: c_int, 
    holes: c_int
) -> gaiaPolygonPtr

Allocates a 2D POLYGON [XYM]

\param vert number of points [aka vertices] into the Exterior Ring. \param holes number of Interior Rings [0, if no Interior Ring is required].

\return the pointer to newly created POLYGON object: NULL on failure

\sa gaiaFreePolygon

\note you are responsible to destroy (before or after) any allocated POLYGON, unless you've passed ownership of the POLYGON object to some further object: in this case destroying the higher order object will implicitly destroy any contained child object.