Function:ss2spt
From S2PLOT
ss2spt
Set the projection type of the device in use.
Prototype
void ss2spt(int projtype);
Description
Set the projection type of the device in use. Only certain changes are allowed. Values are:
- 0 = perspective
- 1 = orthographic
- 2 = fisheye
See Also
| s2ldev | List the available S2PLOT devices on stdout. |
| ss2qpt | Fetch the projection type of the device in use. |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include "s2plot.h"
void cb(double *t, int *kc)
{
int pt = ss2qpt(); /* Query current projection type */
char string[32];
sprintf(string,"Projection type = %d",pt); /* Write to string */
s2textxy(0,0,0,string); /* Display text */
int spt = (*kc % 2); /* Generate new projection type */
ss2spt(spt); /* Set the new projection type */
switch (*kc % 2) {
case 0 : s2lab("","","","Perspective"); break;
case 1 : s2lab("","","","Orthographic"); break;
}
}
int main(int argc, char *argv[])
{
fprintf(stderr,"Press the <spacebar> to change eye-separation");
s2opend("/s2mono", argc, argv); /* Open in mono mode */
s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */
s2box("BCDET",0,0,"BCDET",0,0,"BCDET",0,0); /* Draw coordinate box */
cs2scb(cb); /* Install dynamic callback */
s2show(1); /* Open the s2plot window */
return 1;
}
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