Function:ss2sfc

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ss2sfc

Set the foreground colour.

Prototype

void ss2sfc(float r, float g, float b);

Description

Set the foreground colour. This call should usually be followed by calls to s2scr to set the 1st colour index to be the same as the foregrond, and the 0th colour index to be the opposite.

See Also

struct_COLOUR Data structure for (r,g,b) colour indices.
s2scr Set colour representation, ie. define a colour associated with an index.
ss2sbc Set the background colour.


Code Example

#include <stdio.h>
#include <stdlib.h>
#include "s2plot.h"

int main(int argc, char *argv[])
{
   float r, g, b; 				/* Background colour */
   XYZ xyz = { 0.0, 0.0, 0.0 };			/* Position */
   COLOUR col;					/* Sphere colour */ 
   float radius = 0.3;				/* Radius */

   s2opend("/?",argc, argv);			/* Open the display */

   r = 0.3; 					/* Background colour */
   g = 0.7;
   b = 0.2;
   ss2sfc(r, g, b);				/* Set foreground colour */

   s2swin(-1.,1., -1.,1., -1.,1.);		/* Set the window coordinates */
   s2box("BCDET",0,0,"BCDET",0,0,"BCDET",0,0);	/* Draw coordinate box */

   col.r = 1.0-r;				/* Sphere colour */
   col.g = 1.0-g;				/* Sphere colour */
   col.b = 1.0-b;				/* Sphere colour */
   ns2vsphere(xyz, radius, col);		/* Draw the sphere */

   s2lab("","","","Press the d key for debug information");

   s2show(1);					/* Open the s2plot window */
   
   return 1;
}

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