Function:ss2snfe
From S2PLOT
(Difference between revisions)
| Revision as of 21:55, 16 December 2007 S2plot admin (Talk | contribs) ← Previous diff |
Current revision S2plot admin (Talk | contribs) |
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| == See Also == | == See Also == | ||
| <table> | <table> | ||
| + | <tr><td>[[Function:ss2qnfp | ss2qnfp]]</td><td>Query the near and far clip plane distances.</td></tr> | ||
| </table> | </table> | ||
| Line 19: | Line 20: | ||
| #include <stdio.h> | #include <stdio.h> | ||
| #include <stdlib.h> | #include <stdlib.h> | ||
| + | #include <time.h> | ||
| #include "s2plot.h" | #include "s2plot.h" | ||
| Line 34: | Line 36: | ||
| int main(int argc, char *argv[]) | int main(int argc, char *argv[]) | ||
| { | { | ||
| + | srand48((long)time(NULL)); /* Seed random numbers */ | ||
| s2opend("/s2dsana", argc, argv); /* Open in anaglyph mode */ | s2opend("/s2dsana", argc, argv); /* Open in anaglyph mode */ | ||
| s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */ | s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */ | ||
Current revision
ss2snfe
Set the clipping plane expansion factor.
Prototype
void ss2snfe(float expand);
Description
Set the expansion scale of near and far clipping planes. Use with great caution, particularly in stereoscopic display modes. In general, you should use the default configuration for the clipping planes.
See Also
| ss2qnfp | Query the near and far clip plane distances. |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "s2plot.h"
void cb(double *t, int *kc)
{
XYZ foc = { 0, 0, 0 }; /* Set the camera focus */
ss2scf(foc, 1);
if (*kc % 2 == 1)
ss2snfe(0.5); /* Change the near/far */
else /* expansion factor */
ss2snfe(1.0); /* on <space> press */
}
int main(int argc, char *argv[])
{
srand48((long)time(NULL)); /* Seed random numbers */
s2opend("/s2dsana", argc, argv); /* Open in anaglyph 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 */
int i, N = 500; /* Loop variables */
float bound = 2.0; /* Bound bigger than window */
XYZ xyz; /* Point location */
COLOUR rgb; /* Point colour */
for (i=0;i<N;i++) {
xyz.x = 0.0;
xyz.y = 0.0;
xyz.z = drand48()*(2.0*bound) - bound; /* Random z-value for point */
rgb.r = drand48();
rgb.g = drand48();
rgb.b = drand48();
ns2vthpoint(xyz, rgb, 3); /* Draw the point */
}
cs2scb(cb); /* Install a dynamic callback */
XYZ pos = { 0.0, 0.0, +5.0 }; /* Move the camera closer */
XYZ vd = { 0.0, 0, -1.0 };
XYZ up = { 0.0, 1.0, 0 };
ss2sc(pos, up, vd, 1);
XYZ foc = { 0, 0, 0 }; /* Set the camera focus */
ss2scf(foc, 1);
s2textxy(-1,0.1,0,"Rotate camera and press <space>");
s2textxy(-0.5,-0.1,0,"to see effect of ss2snfe");
s2show(1); /* Open the s2plot window */
return 1;
}
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