diff options
Diffstat (limited to 'sys/gio/gvline.x')
| -rw-r--r-- | sys/gio/gvline.x | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/sys/gio/gvline.x b/sys/gio/gvline.x new file mode 100644 index 00000000..929fab44 --- /dev/null +++ b/sys/gio/gvline.x @@ -0,0 +1,23 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +# GVLINE -- Vector polyline. Draw a line connecting the points (X[i],V[i]), +# where the X[i] are evenly distributed from X1 to X2. + +procedure gvline (gp, v, npts, x1, x2) + +pointer gp # graphics descriptor +real v[ARB] # Y coordinates of the polyline +int npts # number of polyline points +real x1, x2 # range of X coordinates of the polyline + +int i +real dx + +begin + if (npts > 1) { + dx = (x2 - x1) / (npts - 1) + call gamove (gp, x1, v[1]) + do i = 2, npts + call gadraw (gp, (i-1) * dx + x1, v[i]) + } +end |