normalize2d()

static void normalize2d ( POINT2D *  p )

static

Normalize to a unit vector.

Definition at line 524 of file lwgeodetic.c.

{
        double d = sqrt(p->x*p->x + p->y*p->y);
        if (FP_IS_ZERO(d))
        {
                p->x = p->y = 0.0;
                return;
        }
        p->x = p->x / d;
        p->y = p->y / d;
        return;
}

References FP_IS_ZERO, POINT2D::x, and POINT2D::y.

Referenced by edge_calculate_gbox().

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