6.7.21 POLYLINESUB (r, p)

Creates a polyline defined by a subrange r of the vertices of another polyline p.

r is a typeless node to which the lower and upper vertex numbers of the subrange of the other polyline are connected, p must be a polyline type node (see 6.7.20).

In the C++ class hierarchy the class created by the POLYLINE keyword is derived from a general polyline class (see POLYLINE, 6.7.20), so that it can be used at any places where a polyline is expected (with the same number format and vertex type of course)

The following variations of this keyword exist (some of them define the same internal structures, and are only defined to allow consistent naming conventions):

Keyword	numbers	vertices
POLYLINESUB	float	euclidian,3D
POLYLINESUB2	float	euclidian,2D
POLYLINESUB_F	float	euclidian,3D
POLYLINESUB2_F	float	euclidian,2D
POLYLINESUB_D	double	euclidian,3D
POLYLINESUB2_D	double	euclidian,2D
POLYLINESUB_E2	float	euclidian,2D
POLYLINESUB_E3	float	euclidian,3D
POLYLINESUB_H2	float	homogeneous,2D
POLYLINESUB_H3	float	homogeneous,3D
POLYLINESUB_F_E2	float	euclidean,2D
POLYLINESUB_F_E3	float	euclidean,3D
POLYLINESUB_F_H2	float	homogeneous,2D
POLYLINESUB_F_H3	float	homogeneous,3D
POLYLINESUB_D_E2	double	euclidean,2D
POLYLINESUB_D_E3	double	euclidean,3D
POLYLINESUB_D_H2	double	homogeneous,2D
POLYLINESUB_D_H3	double	homogeneous,3D