lwpoly_perimeter_2d()

double lwpoly_perimeter_2d

(

const LWPOLY *

poly

)

Compute the sum of polygon rings length (forcing 2d computation).

Could use a more numerically stable calculator...

Definition at line 485 of file lwpoly.c.

{
        double result=0.0;
        uint32_t i;
 
        LWDEBUGF(2, "in lwgeom_polygon_perimeter (%d rings)", poly->nrings);
 
        for (i=0; i<poly->nrings; i++)
                result += ptarray_length_2d(poly->rings[i]);
 
        return result;
}

References LWDEBUGF, LWPOLY::nrings, ptarray_length_2d(), and LWPOLY::rings.

Referenced by lwgeom_perimeter_2d().

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