Function:ns2verc

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==Description== ==Description==
-Draw an arc as above, but with specified major/minor axis ratio. The major axis is given by the starting vector.+Draw an arc with specified major/minor axis ratio. The major axis is given by the starting vector.
==See Also== ==See Also==
Line 22: Line 22:
<code><pre> <code><pre>
-</pre></code>+#include <stdio.h>
 +#include <stdlib.h>
 +#include "s2plot.h"
-[[S2PLOT:Function List | Back]] to S2PLOT function list.+int main(int argc, char *argv[])
 +{
 + XYZ pos; /* Position */
 + XYZ normal; /* Normal */
 + XYZ start; /* 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 */
 + pos.x = 0.0; pos.y = 0.0; pos.z = 0.0; /* Set position */
 + normal.x = 0.0; normal.y = 1.0; normal.z = 1.0; /* Normal vector */
 + start.x = 1.0; start.y = 0.0; start.z = 0.0; /* Normal vector */
-__NOTOC__+ s2slw(3); /* Set line width */
-__NOEDITSECTION__+ s2sci(S2_PG_YELLOW); /* Set the colour */
 + float axratio = 2.0;
-Back to [[Function:Template | template]] page.+ ns2verc(pos, normal, start, deg, nseg, axratio); /* Draw the arc */
 + s2show(1); /* Open the s2plot window */
 + 
 + return 1;
 +}
 +</pre></code>
 + 
 +[[S2PLOT:Function List | Back]] to S2PLOT function list.
 + 
 +__NOTOC__
 +__NOEDITSECTION__

Current revision

ns2verc

Draw an arc - vector input.

Prototype

void ns2verc(XYZ P, XYZ N, XYZ S, 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

ns2ercDraw an arc.
ns2arcDraw 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.
s2lineDraw 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[])
{
   XYZ pos;                                     /* Position */
   XYZ normal;                                  /* Normal */
   XYZ start;                                   /* 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 */

   pos.x    = 0.0; pos.y    = 0.0; pos.z    = 0.0;      /* Set position */
   normal.x = 0.0; normal.y = 1.0; normal.z = 1.0;      /* Normal vector */
   start.x  = 1.0; start.y  = 0.0; start.z  = 0.0;      /* Normal vector */

   s2slw(3);                                    /* Set line width */
   s2sci(S2_PG_YELLOW);                         /* Set the colour */

   float axratio = 2.0;

   ns2verc(pos, normal, start, deg, nseg, axratio);     /* Draw the arc */
   s2show(1);                                   /* Open the s2plot window */

   return 1;
}

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