Function:ns2erc
From S2PLOT
ns2erc
Draw an arc.
Prototype
void ns2erc(float px, float py, float pz,
float nx, float ny, float nz,
float sx, float sy, float sz,
float deg, int nseg, float axratio);
Description
Draw an arc with specified major/minor axis ratio. The major axis is given by the starting vector.
See Also
| ns2verc | Draw an arc - vector input. |
| ns2arc | Draw an arc at (px,py,pz) with normal (nx,ny,nz) in current pen (thickness,colour). |
| ns2varc | Draw an arc at (px,py,pz) with normal (nx,ny,nz) in current pen (thickness,colour) - vector input. |
| s2line | Draw a poly line, n vertices at (xpts, ypts, zpts). |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include "s2plot.h"
int main(int argc, char *argv[])
{
float px, py, pz; /* Position */
float nx, ny, nz; /* Normal */
float sx, sy, sz; /* Starting vector */
float deg = 180.0; /* Angular extent */
int nseg = 48; /* Number of segments */
s2opend("/?",argc, argv); /* Open the display */
s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */
s2box("BCDET",0,0,"BCDET",0,0,"BCDET",0,0); /* Draw coordinate box */
px = 0.0; py = 0.0; pz = 0.0; /* Set position */
nx = 0.0; ny = 1.0; nz = 1.0; /* Normal vector */
sx = 1.0; sy = 0.0; sz = 0.0; /* Starting vector */
s2slw(3); /* Set line width */
s2sci(S2_PG_YELLOW); /* Set the colour */
float axratio = 0.5;
ns2erc(px,py,pz, nx,ny,nz, sx,sy,sz, deg, nseg, axratio);
/* Draw the arc */
s2show(1); /* Open the s2plot window */
return 1;
}
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