Function:ss2qxh
From S2PLOT
ss2qxh
Query the visibility of the cursor cross-hair
Prototype
int ss2qxh(void);
Description
Query the current state of the cross-hair visibility. Returns 0 if cross-hair is disabled or 1 if cross-hair is enabled.
See Also
| ss2txh | Enable/disable/toggle the visibility of the cursor cross-hair |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>
#include "s2plot.h"
void cb(double *t, int *kc)
{
char string[64]; /* Label to draw */
int vis; /* Crosshair visibility */
vis = ss2qxh(); /* Query crosshair state */
sprintf(string,"Cntrl-C to change crosshairs. Currently: %d\n",vis);
s2lab("","","",string); /* Write the label */
}
int main(int argc, char *argv[])
{
int N = 100; /* Number of points */
float x, y, z; /* Positions */
float r, g, b; /* Colours */
int i;
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); /* Note this does NOT change linewidth - use ns2thpoint */
for (i=0;i<N;i++) { /* Random data positions */
x = drand48()*2.0 - 1.0;
y = drand48()*2.0 - 1.0;
z = drand48()*2.0 - 1.0;
r = drand48();
g = drand48();
b = drand48();
ns2thpoint(x,y,z, r,g,b, 3); /* Draw the thick point */
}
cs2scb(&cb); /* Install a callback */
s2show(1); /* Open the s2plot window */
return 1;
}
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