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I guess I can just put this up. Most of these have been sitting here forever.

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Marisa the Magician 2017-09-04 11:24:40 +02:00
commit d2777092d1
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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>
#define frand() ((double)rand()/(double)(RAND_MAX))
int main( int argc, char **argv )
{
double samp[3];
unsigned i, max = 16, domult = 0, hemi = 0;
if ( argc > 1 ) sscanf(argv[1],"%u",&max);
if ( argc > 2 ) sscanf(argv[2],"%u",&domult);
if ( argc > 3 ) sscanf(argv[3],"%u",&hemi);
double sum, mult;
srand(time(0));
for ( i=0; i<max; i++ )
{
mult = domult?((double)(i+1)/(double)max):1.;
if ( domult > 1 ) mult = pow(mult,domult);
samp[0] = frand()*2.-1.;
samp[1] = frand()*2.-1.;
samp[2] = (hemi)?(frand()):(frand()*2.-1.);
sum = sqrt(samp[0]*samp[0]+samp[1]*samp[1]+samp[2]*samp[2]);
samp[0] = (samp[0]/sum)*mult;
samp[1] = (samp[1]/sum)*mult;
samp[2] = (samp[2]/sum)*mult;
printf("float3(% .4lf,% .4lf,% .4lf)%s",samp[0],samp[1],
samp[2],(i%2)?(i<max-1)?",\n":"\n":",");
}
return 0;
}