Function:cs2thv
From S2PLOT
cs2thv
Toggle the current state of selection handles
Prototype
void cs2thv(int enabledisable);
Description
Enable, disable or toggle the visibility of the selection handles depending on the value of enabledisable:
- enabledisable = 1 Enable selection handles
- enabledisable = 0 Disable selection handles
- enabledisable = -1 Toggle current state of selection handles
The selection handles can also be toggled by using the key combination Cntrl-S.
See Also
| cs2shcb | Set the handle callback function for when a handle is (de)selected |
| cs2qhv | Query whether selection handles are currently visible |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "s2plot.h"
#define N 100 /* Number of points */
XYZ xyz[N]; /* Global variable: positions */
COLOUR col[N]; /* Colour of the point */
int sel[N]; /* Global varibale: selected data */
void cb(double *t, int *kc)
{
COLOUR hilite = { 1.0, 1.0, 1.0 }; /* Highlight colour */
float hsize = 0.02; /* Size of handle */
int i; /* Loop variable */
static int count = 0; /* Update each time called */
if (count == 25) { /* About once per second */
cs2thv(-1); /* Toggle handle visibility */
count = 0; /* Reset counter */
} else {
count++; /* Keep counting */
}
for (i=0;i<N;i++) {
ns2vthpoint(xyz[i], col[i], 3); /* Draw thick point */
cs2ah(xyz[i], hsize, col[i], hilite, i, sel[i]);
/* Draw handles */
}
}
int main(int argc, char *argv[])
{
int i; /* Loop varibale */
float x, y, z; /* Random 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 */
for (i=0;i<N;i++) { /* Set-up globals */
xyz[i].x = drand48()*2.0 - 1.0; /* Random position */
xyz[i].y = drand48()*2.0 - 1.0;
xyz[i].z = drand48()*2.0 - 1.0;
col[i].r = drand48(); /* Random colour */
col[i].g = drand48();
col[i].b = drand48();
sel[i] = 0; /* Not currently selected */
}
cs2scb(&cb); /* Install dynamic callback */
s2slw(2); /* Set line width */
for (i=0;i<N;i++) { /* Non-selectable random data points */
x = drand48()*2.0 - 1.0;
y = drand48()*2.0 - 1.0;
z = drand48()*2.0 - 1.0;
s2sci(15*drand48() + 1); /* Random colour */
s2pt1(x,y,z,1);
}
s2show(1); /* Open the s2plot window */
return 1;
}
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