NAME¶
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.)
SYNOPSIS¶
CALL FRST3 (U,V,W)
C-BINDING SYNOPSIS¶
#include <ncarg/ncargC.h>
void c_FRST3 (float u, float v, float w)
DESCRIPTION¶
- U,V,W
- (input expressions of type REAL) are the coordinates of a point in 3-space
at the projection of which the drawing of a line is to begin.
Each call to FRST3 moves a conceptual "pen" to the new starting point
for a sequence of line draws. Each call to VECT3 draws a line from the current
pen position to a new pen position and then makes that the current pen
position.
Line segments 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
value of the line width scale factor is 1.
Note that the routines FRST3 and VECT3 do not flush the SPPS pen-move buffer. In
fact, to have them do so would entirely defeat the purpose of that buffer.
Therefore, if your last call was to the routine VECT3 and you are about to
call GKS routines to change color or line width, you must first call the SPPS
routine PLOTIF to flush the buffer; otherwise, the color and line width
changes will affect line draws flushed from the buffer later.
C-BINDING DESCRIPTION¶
The C-binding argument descriptions are the same as the FORTRAN argument
descriptions.
EXAMPLES¶
Use the ncargex command to see the following relevant fthex01, fthex02, fthex03.
ACCESS¶
To use FRST3 or c_frst3, load the NCAR Graphics libraries ncarg, ncarg_gks, and
ncarg_c, preferably in that order.
SEE ALSO¶
Online: threed, curve3, fence3, line3, perim3, point3, psym3, pwrz, pwrzt, set3,
threed, 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.