Function:ss2wtga
From S2PLOT
ss2wtga
Write the current frame to a named TGA file.
Prototype
void ss2wtga(char *fname);
Description
Write the current frame image to a named TGA file. This can be used immediately after a call to s2show or s2disp to save a rendered image, or from within a callback.
For effective use, s2disp must display the image long enough to go beyond the S2PLOT "fade-in" time; the best way to do this is to set the S2PLOT_FADETIME environment variable to 0.0, and then call s2disp(0,1).
Do not include the ".tga" extension in the filename, as this is added automatically.
See Also
| s2show | Draw the scene and enter interactive mode. |
| s2disp | Draw the scene but return control on timeout. |
| ss2gpix | Fetch the current RGB buffer. |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include "s2plot.h"
void cb(double *t, int *kc)
{
static int lkc = 0; /* Has the spacebar been pressed? */
static int mode = 0; /* Should a frame be dumped */
static int frame = 0; /* Current output frame number */
if (*kc != lkc) { /* Has spacebar been pressed? */
if (!mode) { /* What is the current mode? */
char string[64];
sprintf(string,"myframe_%d",frame); /* Prepare filename */
fprintf(stderr,"Dumping frame: %s\n",string); /* Output message */
ss2wtga(string); /* Write screen image to TGA file */
frame++; /* Increment frame number */
}
mode = 1; /* Set mode - do not dump again */
} else { /* Write user message */
s2textxy(-1,0,0,"Press <space> to dump TGA frame");
mode = 0; /* Make sure ready to dump frame */
}
lkc = *kc; /* Update count of spacebar presses */
}
int main(int argc, char *argv[])
{
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 */
int i, N = 200; /* Loop variables */
XYZ xyz;
COLOUR col;
for (i=0;i<N;i++) {
xyz.x = drand48()*2.0 - 1.0; /* Random position */
xyz.y = drand48()*2.0 - 1.0;
xyz.z = drand48()*2.0 - 1.0;
col.r = drand48()*2.0 - 1.0; /* Random colour */
col.g = drand48()*2.0 - 1.0;
col.b = drand48()*2.0 - 1.0;
ns2vthpoint(xyz, col,3); /* Draw the point */
}
cs2scb(&cb); /* Install dynamic callback */
s2show(1); /* Open the s2plot window */
return 1;
}
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