Function:ss2sc
From S2PLOT
(Difference between revisions)
| Revision as of 01:24, 30 October 2007 S2plot admin (Talk | contribs) ← Previous diff |
Revision as of 06:25, 6 March 2008 S2plot admin (Talk | contribs) Next diff → |
||
| Line 24: | Line 24: | ||
| #include <stdio.h> | #include <stdio.h> | ||
| #include <stdlib.h> | #include <stdlib.h> | ||
| + | #include <time.h> | ||
| #include "s2plot.h" | #include "s2plot.h" | ||
| int main(int argc, char *argv[]) | int main(int argc, char *argv[]) | ||
| { | { | ||
| - | XYZ pos; /* Camera position */ | + | XYZ pos; /* Camera position */ |
| - | XYZ up; /* Camera up vector */ | + | XYZ up; /* Camera up vector */ |
| - | XYZ view; /* Camera view vector */ | + | XYZ view; /* Camera view vector */ |
| - | int wc = 1; /* Use world coordinates */ | + | int wc = 1; /* Use world coordinates */ |
| - | int i, N = 20; /* Loop variables */ | + | int i, N = 20; /* Loop variables */ |
| - | float x, y, z; /* Temporary data */ | + | float x, y, z; /* Temporary data */ |
| - | + | ||
| - | 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 */ | + | |
| - | s2slw(3); /* Set line width */ | + | srand48((long)time(NULL)); /* Seed random numbers */ |
| + | |||
| + | 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 */ | ||
| + | |||
| + | s2slw(3); /* Set line width */ | ||
| for (i=0;i<N;i++) { | for (i=0;i<N;i++) { | ||
| - | x = drand48()*2.0 - 1.0; /* Random positions */ | + | x = drand48()*2.0 - 1.0; /* Random positions */ |
| y = drand48()*2.0 - 1.0; | y = drand48()*2.0 - 1.0; | ||
| z = drand48()*2.0 - 1.0; | z = drand48()*2.0 - 1.0; | ||
| - | s2sci(15*drand48()+1); /* Random colour */ | + | s2sci(15*drand48()+1); /* Random colour */ |
| s2pt1(x, y, z, 1); | s2pt1(x, y, z, 1); | ||
| } | } | ||
| Line 52: | Line 55: | ||
| view.x = 0.0; view.y = 0.0; view.z = -1.0; | view.x = 0.0; view.y = 0.0; view.z = -1.0; | ||
| - | ss2sc(pos, up, view, wc); /* Set new camera position */ | + | ss2sc(pos, up, view, wc); /* Set new camera position */ |
| + | |||
| + | s2show(1); /* Open the s2plot window */ | ||
| - | s2show(1); /* Open the s2plot window */ | ||
| - | |||
| return 1; | return 1; | ||
| } | } | ||
| + | |||
| </pre></code> | </pre></code> | ||
| [[S2PLOT:Function List | Back]] to S2PLOT function list. | [[S2PLOT:Function List | Back]] to S2PLOT function list. | ||
| __NOTOC__ | __NOTOC__ | ||
| __NOEDITSECTION__ | __NOEDITSECTION__ | ||
Revision as of 06:25, 6 March 2008
ss2sc
Set the camera position, up vector and view direction.
Prototype
void ss2sc(XYZ position, XYZ up, XYZ vdir, int worldcoords);
Description
Set the camera position, up vector and view direction (vdir). If worldcoords > 0 then caller has given world coordinates, otherwise they are viewport-relative coordinates.
See Also
| ss2qc | Query the camera position, up vector and view direction. |
| ss2tc | Enable/disable (1,0) camera translation. |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "s2plot.h"
int main(int argc, char *argv[])
{
XYZ pos; /* Camera position */
XYZ up; /* Camera up vector */
XYZ view; /* Camera view vector */
int wc = 1; /* Use world coordinates */
int i, N = 20; /* Loop variables */
float x, y, z; /* Temporary data */
srand48((long)time(NULL)); /* Seed random numbers */
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 */
s2slw(3); /* Set line width */
for (i=0;i<N;i++) {
x = drand48()*2.0 - 1.0; /* Random positions */
y = drand48()*2.0 - 1.0;
z = drand48()*2.0 - 1.0;
s2sci(15*drand48()+1); /* Random colour */
s2pt1(x, y, z, 1);
}
pos.x = 0.0; pos.y = 0.0; pos.z = 10.0;
up.x = 0.5; up.y = 0.5; up.z = 0.0;
view.x = 0.0; view.y = 0.0; view.z = -1.0;
ss2sc(pos, up, view, wc); /* Set new camera position */
s2show(1); /* Open the s2plot window */
return 1;
}
Back to S2PLOT function list.
