Function:s2qvp
From S2PLOT
s2qvp
Query the device viewport range.
Prototype
void s2qvp(float *dx1, float *dx2, float *dy1, float *dy2, float *dz1, float *dz2);
Description
Query the device viewport range.
See Also
| s2svp | Set up the part of 3D space that is used for plotting. |
PGPLOT Equivalent
Code Example
#include <stdio.h>
#include <stdlib.h>
#include "s2plot.h"
int main(int argc, char *argv[])
{
float dx1, dx2, dy1, dy2, dz1, dz2; /* Viewport ranges */
s2opend("/?",argc, argv); /* Open the display */
s2svp(-1.,1., -1.,1., -1.,1.); /* First view port */
s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */
s2box("BCDET",0,0,"BCDET",0,0,"BCDET",0,0); /* Draw coordinate box */
s2qvp(&dx1,&dx2, &dy1,&dy2, &dz1,&dz2); /* Query viewport coordinates */
dx1 /= 2.0; dx2 /= 2.0; /* Halve the coordintes */
dy1 /= 2.0; dy2 /= 2.0;
dz1 /= 2.0; dz2 /= 2.0;
s2sci(S2_PG_RED);
s2svp(dx1,dx2, dy1,dy2, dz1,dz2); /* Create a half-size viewport */
s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */
s2box("BCDET",0,0,"BCDET",0,0,"BCDET",0,0); /* Draw coordinate box */
s2show(1); /* Open the s2plot window */
return 1;
}
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