Function:ss2qpt

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Revision as of 01:24, 30 October 2007

ss2qpt

Fetch the projection type of the device in use.

Prototype

int ss2qpt();

Description

Fetch the projection type of the device in use. Return values are:

  • 0 = perspective
  • 1 = orthographic
  • 2 = fisheye

See Also

s2ldev List the available S2PLOT devices on stdout.


Code Example

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "s2plot.h"

int main(int argc, char *argv[])
{
   int N = 100;					/* Number of points */
   XYZ xyz;					/* Position */
   COLOUR col;					/* Colour */
   int i;
   int dev;					/* Random device */
   char string[32];				/* Name of device */

   srand48((long)time(NULL));			/* Seed random numbers */

   fprintf(stderr,"Choose /S2FISH or /S2MONO device\n");
   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 */

   for (i=0;i<N;i++) {			/* Random data positions */
      xyz.x = drand48()*2.0 - 1.0;
      xyz.y = drand48()*2.0 - 1.0;
      xyz.z = drand48()*2.0 - 1.0;
      col.r = drand48();
      col.g = drand48();
      col.b = drand48();
      ns2vpoint(xyz, col);			/* Draw the point */
   }

   dev = ss2qpt();				/* Get projection type */
   switch (dev) {
      case  0 : sprintf(string,"Perspective"); break;
      case  1 : sprintf(string,"Orthographic"); break;
      case  2 : sprintf(string,"Fisheye"); break;
      default : sprintf(string,"Unknown!"); break;
   }
   s2textxy(0.0,0.0,0.0, string);
   
   s2show(1);					/* Open the s2plot window */
   
   return 1;
}

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