Function:ns2line
From S2PLOT
(Difference between revisions)
Revision as of 01:32, 30 October 2007
ns2line
Draw a line from one point to another in a specific colour.
Prototype
void ns2line(float x1, float y1, float z1, float x2, float y2, float z2, float red, float green, float blue);
Description
Draw a line from (x1,y1,z1) to (x2,y2,z2) using RGB colour (red,green,blue).
See Also
| ns2vline | Draw a line from one point to another in a specific colour - vector input. |
| ns2thline | Draw a thick line from one point to another in a specific colour. |
| ns2vthline | Draw a thick line from one point to another in a specific colour - vector input. |
| ns2cline | Draw a coloured line, with colour blended between the two given colours along the line. |
| ns2vcline | Draw a coloured line, with colour blended between the two given colours along the line - vector input. |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "s2plot.h"
int main(int argc, char *argv[])
{
float x1, y1, z1; /* Start of line */
float x2, y2, z2; /* End of line */
float r, g, b; /* Colour of line segment */
int N = 10; /* Number of lines */
int i; /* Loop variable */
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 */
s2sci(S2_PG_YELLOW); /* Set colour */
for (i=0;i<N;i++) {
x1 = drand48()*2.0 - 1.0; /* Random (x,y,z) coordinates */
y1 = drand48()*2.0 - 1.0;
z1 = drand48()*2.0 - 1.0;
x2 = drand48()*2.0 - 1.0; /* Random (x,y,z) coordinates */
y2 = drand48()*2.0 - 1.0;
z2 = drand48()*2.0 - 1.0;
r = drand48();
g = drand48();
b = drand48();
ns2line(x1,y1,z1, x2,y2,z2, r,g,b); /* Draw the line */
}
s2show(1); /* Open the s2plot window */
return 1;
}
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