Function:ns2vnpoint
From S2PLOT
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Current revision S2plot admin (Talk | contribs) |
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| </table> | </table> | ||
| + | ==Code Example== | ||
| + | <code><pre> | ||
| + | #include <stdio.h> | ||
| + | #include <stdlib.h> | ||
| + | #include <time.h> | ||
| + | #include "s2plot.h" | ||
| + | |||
| + | int main(int argc, char *argv[]) | ||
| + | { | ||
| + | int N = 100; /* Number of points */ | ||
| + | XYZ xyz[100]; /* Positions */ | ||
| + | COLOUR col; /* Colour */ | ||
| + | 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 */ | ||
| + | xyz[i].x = drand48()*2.0 - 1.0; | ||
| + | xyz[i].y = drand48()*2.0 - 1.0; | ||
| + | xyz[i].z = drand48()*2.0 - 1.0; | ||
| + | col.r = drand48(); | ||
| + | col.g = drand48(); | ||
| + | col.b = drand48(); | ||
| + | } | ||
| + | ns2vnpoint(xyz, col, N); /* Draw the points */ | ||
| + | |||
| + | s2show(1); /* Open the s2plot window */ | ||
| + | |||
| + | return 1; | ||
| + | } | ||
| + | </pre></code> | ||
| [[S2PLOT:Function List | Back]] to S2PLOT function list. | [[S2PLOT:Function List | Back]] to S2PLOT function list. | ||
| __NOTOC__ | __NOTOC__ | ||
| __NOEDITSECTION__ | __NOEDITSECTION__ | ||
Current revision
ns2vnpoint
Draw multiple points at the given positions with one colour - vector input.
Prototype
void ns2vnpoint(XYZ *P, COLOUR col, int n);
Description
Draw n points at positions P with RBG colour (col), using vector data structures.
See Also
| ns2point | Draw a point at the given position and colour. |
| ns2vpoint | Draw a point at the given position and colour - vector input. |
| ns2thpoint | Draw a thick point at given position, in colour and thickness in pixels (not world coords). |
| ns2vthpoint | Draw a thick point at given position, in colour and thickness in pixels (not world coords) - vector input. |
| 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 <time.h>
#include "s2plot.h"
int main(int argc, char *argv[])
{
int N = 100; /* Number of points */
XYZ xyz[100]; /* Positions */
COLOUR col; /* Colour */
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 */
xyz[i].x = drand48()*2.0 - 1.0;
xyz[i].y = drand48()*2.0 - 1.0;
xyz[i].z = drand48()*2.0 - 1.0;
col.r = drand48();
col.g = drand48();
col.b = drand48();
}
ns2vnpoint(xyz, col, N); /* Draw the points */
s2show(1); /* Open the s2plot window */
return 1;
}
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