# ncl_threed man page

THREED — 3-d line drawing package.

## Synopsis

`CURVE3 - Draws the projection of a curve defined by a sequence of points in 3-space.`

FENCE3 - Draws the projection of a curve, just as CURVE3 does, but with a "fence" of straight line segments that are parallel to one of the three axes and that extend to a specified plane perpendicular to that axis.

FRST3 - Specifies the first in a sequence of points connected by straight-line segments, the projections of which are to be drawn. (FRST3 is called for the first point in the sequence and VECT3 is called for the rest.)

LINE3 - Draws the projection of a straight-line segment.

PERIM3 - Draws the projection of a rectangular perimeter in a plane parallel to one of the three coordinate planes, with inward-pointing tick marks at specified intervals.

POINT3 - Draws the projection of a point.

PWRZT - Draws the projection of character strings that are positioned in a plane parallel to one of the three coordinate planes.

SET3 - Defines the transformation from three dimensions to two dimensions.

TICK43 - Gives user control of tick mark length in PERIM3.

VECT3 - Defines the second and all subsequent points in a sequence of points connected by straight-line segments, the projections of which are to be drawn. (FRST3 is called for the first point in the sequence and VECT3 is called for the rest.)

## C-Binding Synopsis

#include <ncarg/ncargC.h>

c_curve3

c_fence3

c_frst3

c_line3

c_perim3

c_point3

c_pwrzt

c_set3

c_threed

c_tick43

c_vect3

## Access

To use THREED routines, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.

## See Also

Online: threed, curve3, fence3, frst3, line3, perim3, point3, psym3, pwrz, pwrzt, set3, tick3, tick43, vect3, ncarg_cbind.

Hardcopy: NCAR Graphics Fundamentals, UNIX Version

## Copyright

Copyright (C) 1987-2009

University Corporation for Atmospheric Research

The use of this Software is governed by a License Agreement.