mvt_clip_and_validate()

static LWGEOM* mvt_clip_and_validate ( LWGEOM *  lwgeom, uint8_t  basic_type, uint32_t  extent, uint32_t  buffer, bool  clip_geom  )

static

Definition at line 896 of file mvt.c.

{
        GBOX clip_box = {0};
        LWGEOM *clipped_lwgeom;
 
        /* Wagyu only supports polygons. Default to geos for other types */
        lwgeom = lwgeom_to_basic_type(lwgeom, POLYGONTYPE);
        if (lwgeom->type != POLYGONTYPE && lwgeom->type != MULTIPOLYGONTYPE)
        {
                return mvt_clip_and_validate_geos(lwgeom, basic_type, extent, buffer, clip_geom);
        }
 
        if (!clip_geom)
        {
                /* With clipping disabled, we request a clip with the geometry bbox to force validation */
                lwgeom_calculate_gbox(lwgeom, &clip_box);
        }
        else
        {
                clip_box.xmax = clip_box.ymax = (double)extent + (double)buffer;
                clip_box.xmin = clip_box.ymin = -(double)buffer;
        }
 
        clipped_lwgeom = lwgeom_wagyu_clip_by_box(lwgeom, &clip_box);
 
        return clipped_lwgeom;
}

References buffer(), lwgeom_calculate_gbox(), lwgeom_to_basic_type(), MULTIPOLYGONTYPE, mvt_clip_and_validate_geos(), POLYGONTYPE, LWGEOM::type, GBOX::xmax, GBOX::xmin, GBOX::ymax, and GBOX::ymin.

Referenced by mvt_geom().

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