random.h

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/* === S Y N F I G ========================================================= */
/* ========================================================================= */

/* === S T A R T =========================================================== */

#ifndef __SYNFIG_RANDOM_H
#define __SYNFIG_RANDOM_H

/* === H E A D E R S ======================================================= */

/* === M A C R O S ========================================================= */

/* === T Y P E D E F S ===================================================== */

/* === C L A S S E S & S T R U C T S ======================================= */


#define POOL_SIZE   (256)
class Random
{
    int pool_[POOL_SIZE];
    int seed_;

    int x_mask, y_mask, t_mask;

public:

    void set_seed(int x);
    int get_seed()const { return seed_; }

    enum SmoothType
    {
        SMOOTH_DEFAULT      = 0,
        SMOOTH_LINEAR       = 1,
        SMOOTH_COSINE       = 2,
        SMOOTH_SPLINE       = 3,
        SMOOTH_CUBIC        = 4,
        SMOOTH_FAST_SPLINE  = 5,
    };

    float operator()(int salt,int x,int y=0, int t=0)const;
    float operator()(SmoothType smooth,int subseed,float x,float y=0, float t=0)const;
};

/* === E N D =============================================================== */

#endif