Function:ns2vm
From S2PLOT
(Difference between revisions)
Revision as of 01:32, 30 October 2007
ns2vm
Draw a marker - vector input
Prototype
void ns2vm(int type, float size, XYZ P, COLOUR col);
Description
Draw a marker at position P, with size and RGB colour col, using vector data structures. Argument type should be one of:
- 0 = tetrahedron (pyramid)
- 1 = wireframe 3D cross
- 2 = shaded box
- 4 = octahedron (diamond)
See Also
| ns2m | Draw a marker |
| struct_COLOUR | Data structure for (r,g,b) colour indices. |
| struct_XYZ | Data structure for (x,y,z) coordinates. |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include "s2plot.h"
int main(int argc, char *argv[])
{
int i;
int marker; /* Type of marker to use */
XYZ xyz; /* Position */
COLOUR col; /* Colour */
float size = 0.4; /* Size of marker */
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 */
marker = 0;
for (i=0;i<12;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(); /* Randomish colour */
col.g = 1.0;
col.b = 0.3;
ns2vm(marker, size, xyz, col); /* Draw the marker */
marker++;
if (marker == 3) marker++; /* There is no marker 3 */
if (marker > 4) marker = 0;
}
s2show(1); /* Open the s2plot window */
return 1;
}
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