lw_dist3d_pt_tri()

int lw_dist3d_pt_tri	(	const POINT3DZ *	p,
		const LWTRIANGLE *	tri,
		PLANE3D *	plane,
		POINT3DZ *	projp,
		DISTPTS3D *	dl
	)

Definition at line 1317 of file measures3d.c.

{
        if (pt_in_ring_3d(projp, tri->points, plane))
                /* if the projected point is inside the polygon the shortest distance is between that point and the
                 * input point */
                return lw_dist3d_pt_pt(p, projp, dl);
        else
                /* if the projected point is outside the polygon we search for the closest distance against the boundary
                 * instead */
                return lw_dist3d_pt_ptarray(p, tri->points, dl);
 
        return LW_TRUE;
}

References lw_dist3d_pt_pt(), lw_dist3d_pt_ptarray(), LW_TRUE, LWTRIANGLE::points, and pt_in_ring_3d().

Referenced by lw_dist3d_point_tri(), and lw_dist3d_ptarray_tri().

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