Fct_Random

Provide a seed value for the "Fct_Random_Float" and "Fct_Random_Int" functions.

Syntax

void Fct_Random_Seed(

unsigned int seed

) ;

Parameters

seed

Seed value for the random generator.

Return value

This function does not return a value.

Remarks

This random number generator is based on the algorithm presented in "Random Number Generators: Good ones are hard to find", Stephen K. Park and Keith W. Miller, Communications of the ACM, Vol 31, Num10, October 1988.

Requirements

Header:

sliceO_include.hpp

Library:

sliceO_Structures.lib

Example

...

extern "C" __declspec(dllexport) int Init( void )

{

int i ;

static int start_color[] = { 0x00000000, 0x000000ff, 0x0000ff00, 0x00ff0000,

0x00Cf00Cf, 0x0000ffff, 0x00006fff, 0x00CfCf00,

0x007f00Cf, 0x00ff7f00, 0x00ffD0D0, 0x0000D000,

0x00D0E000, 0x00D06fff, 0x00ff007f, 0x0000C0C0 } ;

...

// --- Assign colors to the TAGs. The first 16 colors are hard coded ---

for ( i=0; i < 16; i++ ) {

TAG_Red[i] = (RED_BYTE( start_color[i] ) << 8) | RED_BYTE( start_color[i] ) ;

TAG_Grn[i] = (GRN_BYTE( start_color[i] ) << 8) | GRN_BYTE( start_color[i] ) ;

TAG_Blu[i] = (BLU_BYTE( start_color[i] ) << 8) | BLU_BYTE( start_color[i] ) ;

}

// --- the remaining colors come from a random with a fixed seed ---

Fct_Random_Seed( 1 ) ;

Fct_Random_Int() ;

for ( ; i < TAG_Max; i++ ) {

Color col ;

col.color = Fct_Random_Int() & 0x0FFFFFF ;

TAG_Red[i] = (col.col.R << 8) | col.col.R ;

TAG_Grn[i] = (col.col.G << 8) | col.col.G ;

TAG_Blu[i] = (col.col.B << 8) | col.col.B ;

}

...

}

...