randcolor.h

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#pragma once
 
/*+
________________________________________________________________________
 
 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Nanne Hemstra
 Date:          November 2006
 RCS:           $Id$
________________________________________________________________________
 
-*/
 
#include "color.h"
#include "statrand.h"
 
inline Color getRandomColor( bool withtransp=false )
{
    return Color( (unsigned char) Stats::randGen().getIndex(255),
                  (unsigned char) Stats::randGen().getIndex(255),
                  (unsigned char) Stats::randGen().getIndex(255),
                  (unsigned char)
                     (withtransp ? Stats::randGen().getIndex(255) : 0) );
}
 
 
inline Color getRandStdDrawColor()
{
    mDefineStaticLocalObject( int, curidx, = -1 );
    if ( curidx == -1 )
        curidx = Stats::randGen().getIndex( Color::nrStdDrawColors() );
    else
    {
        curidx++;
        if ( curidx == Color::nrStdDrawColors() )
            curidx = 0;
    }
 
    return Color::stdDrawColor( curidx );
}
 
 
inline Color getRandomFillColor()
{
    return Color( (unsigned char) (155 + Stats::randGen().getIndex(100)),
                  (unsigned char) (155 + Stats::randGen().getIndex(100)),
                  (unsigned char) (155 + Stats::randGen().getIndex(100)) );
}