lwgeom_affine()

void lwgeom_affine	(	LWGEOM *	geom,
		const AFFINE *	affine
	)

Definition at line 2111 of file lwgeom.c.

{
        int type = geom->type;
        uint32_t i;
 
        switch(type)
        {
                /* Take advantage of fact that pt/ln/circ/tri have same memory structure */
                case POINTTYPE:
                case LINETYPE:
                case CIRCSTRINGTYPE:
                case TRIANGLETYPE:
                {
                        LWLINE *l = (LWLINE*)geom;
                        ptarray_affine(l->points, affine);
                        break;
                }
                case POLYGONTYPE:
                {
                        LWPOLY *p = (LWPOLY*)geom;
                        for( i = 0; i < p->nrings; i++ )
                                ptarray_affine(p->rings[i], affine);
                        break;
                }
                case CURVEPOLYTYPE:
                {
                        LWCURVEPOLY *c = (LWCURVEPOLY*)geom;
                        for( i = 0; i < c->nrings; i++ )
                                lwgeom_affine(c->rings[i], affine);
                        break;
                }
                default:
                {
                        if( lwgeom_is_collection(geom) )
                        {
                                LWCOLLECTION *c = (LWCOLLECTION*)geom;
                                for( i = 0; i < c->ngeoms; i++ )
                                {
                                        lwgeom_affine(c->geoms[i], affine);
                                }
                        }
                        else
                        {
                                lwerror("lwgeom_affine: unable to handle type '%s'", lwtype_name(type));
                        }
                }
        }
 
        /* Recompute bbox if needed */
        if (geom->bbox)
                lwgeom_refresh_bbox(geom);
}

References LWGEOM::bbox, CIRCSTRINGTYPE, CURVEPOLYTYPE, LWCOLLECTION::geoms, LINETYPE, lwerror(), lwgeom_affine(), lwgeom_is_collection(), lwgeom_refresh_bbox(), lwtype_name(), LWCOLLECTION::ngeoms, LWPOLY::nrings, LWCURVEPOLY::nrings, LWLINE::points, POINTTYPE, POLYGONTYPE, ptarray_affine(), LWPOLY::rings, LWCURVEPOLY::rings, TRIANGLETYPE, and LWGEOM::type.

Referenced by lwgeom_affine(), LWGEOM_affine(), lwgeom_solid_contains_lwgeom(), lwgeom_split_wrapx(), mvt_geom(), and ST_Scale().

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