point4d_transform()

int point4d_transform	(	POINT4D *	pt,
		projPJ	srcpj,
		projPJ	dstpj
	)

Definition at line 131 of file liblwgeom/lwgeom_transform.c.

{
        POINT3D orig_pt = {pt->x, pt->y, pt->z}; /* Copy for error report*/
 
        if (pj_is_latlong(srcpj)) to_rad(pt) ;
 
        LWDEBUGF(4, "transforming POINT(%f %f) from '%s' to '%s'",
                 orig_pt.x, orig_pt.y, pj_get_def(srcpj,0), pj_get_def(dstpj,0));
 
        if (pj_transform(srcpj, dstpj, 1, 0, &(pt->x), &(pt->y), &(pt->z)) != 0)
        {
                int pj_errno_val = *pj_get_errno_ref();
                if (pj_errno_val == -38)
                {
                        lwnotice("PostGIS was unable to transform the point because either no grid"
                                 " shift files were found, or the point does not lie within the "
                                 "range for which the grid shift is defined. Refer to the "
                                 "ST_Transform() section of the PostGIS manual for details on how "
                                 "to configure PostGIS to alter this behaviour.");
                        lwerror("transform: couldn't project point (%g %g %g): %s (%d)",
                                orig_pt.x, orig_pt.y, orig_pt.z,
                                pj_strerrno(pj_errno_val), pj_errno_val);
                }
                else
                {
                        lwerror("transform: couldn't project point (%g %g %g): %s (%d)",
                                orig_pt.x, orig_pt.y, orig_pt.z,
                                pj_strerrno(pj_errno_val), pj_errno_val);
                }
                return LW_FAILURE;
        }
 
        if (pj_is_latlong(dstpj)) to_dec(pt);
        return LW_SUCCESS;
}

References LW_FAILURE, LW_SUCCESS, LWDEBUGF, lwerror(), lwnotice(), to_dec(), to_rad(), POINT3D::x, POINT4D::x, POINT3D::y, POINT4D::y, POINT3D::z, and POINT4D::z.

Referenced by ptarray_transform().

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