| LINE3(3NCARG) | NCAR GRAPHICS | LINE3(3NCARG) |
LINE3 - Draws the straight-line segment joining the projections of two points in 3-space.
CALL LINE3 (UA,VA,WA,UB,VB,WB)
#include <ncarg/ncargC.h>
void c_line3 (float ua, float va, float wa, float ub,
float vb, float wb)
The statement "CALL LINE3 (UA,VA,WA,UB,VB,WB)" is equivalent to the three statements "CALL FRST3 (UA,VA,WA)", "CALL VECT3 (UB,VB,,WB)", and "CALL PLOTIF (0.,0.,2), but is slightly more efficient. To approximate a curve defined by three or more points, though, it is not efficient to use LINE3, because the first point of each line segment after the first will be a repeat of the second point of the previous line segment and will therefore be repeated in the metafile. Thus, to approximate a curve, you should use FRST3 and VECT3 or CURVE3.
Straight-line segments drawn by LINE3 are drawn in the current polyline color, as determined by the last call to the GKS routine GSPLCI; by default, color index 1 is used. Line width is determined by the last call to the GKS routine GSLWSC; by default, the line width scale factor is 1.
The C-binding argument descriptions are the same as the FORTRAN argument descriptions.
Use the ncargex command to see the following relevant example: tpwrzt, fthex02.
To use LINE3 or c_line3, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.
Online: threed, curve3, fence3, frst3, perim3, point3, psym3, pwrz, pwrzt, set3, threed, tick3, tick43, vect3, ncarg_cbind.
Hardcopy: NCAR Graphics Fundamentals, UNIX Version
Copyright (C) 1987-2009
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.
| March 1993 | UNIX |