Function:ss2wtga
From S2PLOT
(Difference between revisions)
| Revision as of 04:13, 4 December 2007 S2plot admin (Talk | contribs) ← Previous diff |
Current revision S2plot admin (Talk | contribs) |
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| Line 17: | Line 17: | ||
| == See Also == | == See Also == | ||
| <table> | <table> | ||
| - | <tr><td>[[Function:s2open | s2open]]</td><td>. </td></tr> | + | <tr><td>[[Function:s2show | s2show]]</td><td>Draw the scene and enter interactive mode. </td></tr> |
| + | <tr><td>[[Function:s2disp | s2disp]]</td><td>Draw the scene but return control on timeout. </td></tr> | ||
| + | <tr><td>[[Function:ss2gpix | ss2gpix]]</td><td>Fetch the current RGB buffer. </td></tr> | ||
| </table> | </table> | ||
| Line 24: | Line 26: | ||
| #include <stdio.h> | #include <stdio.h> | ||
| #include <stdlib.h> | #include <stdlib.h> | ||
| + | #include <time.h> | ||
| #include "s2plot.h" | #include "s2plot.h" | ||
| Line 29: | Line 32: | ||
| { | { | ||
| static int lkc = 0; /* Has the spacebar been pressed? */ | static int lkc = 0; /* Has the spacebar been pressed? */ | ||
| - | static int mode = 0; /* Should a frame be dumped */ | + | static int mode = 0; /* Should a frame be dumped */ |
| static int frame = 0; /* Current output frame number */ | static int frame = 0; /* Current output frame number */ | ||
| if (*kc != lkc) { /* Has spacebar been pressed? */ | if (*kc != lkc) { /* Has spacebar been pressed? */ | ||
| if (!mode) { /* What is the current mode? */ | if (!mode) { /* What is the current mode? */ | ||
| - | char string[64]; | + | char string[64]; |
| sprintf(string,"myframe_%d",frame); /* Prepare filename */ | sprintf(string,"myframe_%d",frame); /* Prepare filename */ | ||
| fprintf(stderr,"Dumping frame: %s\n",string); /* Output message */ | fprintf(stderr,"Dumping frame: %s\n",string); /* Output message */ | ||
| ss2wtga(string); /* Write screen image to TGA file */ | ss2wtga(string); /* Write screen image to TGA file */ | ||
| frame++; /* Increment frame number */ | frame++; /* Increment frame number */ | ||
| - | } | + | } |
| mode = 1; /* Set mode - do not dump again */ | mode = 1; /* Set mode - do not dump again */ | ||
| } else { /* Write user message */ | } else { /* Write user message */ | ||
| Line 51: | Line 54: | ||
| int main(int argc, char *argv[]) | int main(int argc, char *argv[]) | ||
| { | { | ||
| + | srand48((long)time(NULL)); /* Seed random numbers */ | ||
| s2opend("/s2mono", argc, argv); /* Open in mono mode */ | s2opend("/s2mono", argc, argv); /* Open in mono mode */ | ||
| s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */ | s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */ | ||
| Line 58: | Line 62: | ||
| XYZ xyz; | XYZ xyz; | ||
| COLOUR col; | COLOUR col; | ||
| - | + | ||
| for (i=0;i<N;i++) { | for (i=0;i<N;i++) { | ||
| xyz.x = drand48()*2.0 - 1.0; /* Random position */ | xyz.x = drand48()*2.0 - 1.0; /* Random position */ | ||
| Line 74: | Line 78: | ||
| return 1; | return 1; | ||
| } | } | ||
| + | |||
| </pre></code> | </pre></code> | ||
Current revision
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 <time.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[])
{
srand48((long)time(NULL)); /* Seed random numbers */
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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