InfiniteAmortizedNoise2D.h

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// Copyright Ian Parberry, September 2013.
//
// This file is made available under the GNU All-Permissive License.
//
// Copying and distribution of this file, with or without modification,
// are permitted in any medium without royalty provided the copyright
// notice and this notice are preserved.  This file is offered as-is,
// without any warranty.
//
// Created by Ian Parberry, September 2013.
// Last updated April 10, 2014.

#pragma once


class CInfiniteAmortizedNoise2D{
  private: //Amortized noise stuff
    float *uax; 
    float *vax; 
    float *ubx; 
    float *vbx; 
    float *uay; 
    float *vay; 
    float *uby; 
    float *vby; 
    float* spline; 
    unsigned int seed; 

    unsigned int h(const unsigned int x, const unsigned int y); 

    void FillUp(float* t, const float s, const int n); 
    void FillDn(float* t, const float s, const int n); 

    void initEdgeTables(const int x, const int y, const int n); 
    void initSplineTable(const int n); 

    float getNoise(const int i, const int j);  
    void getNoise(const int n, const int i0, const int j0, float** cell);  
    void addNoise(const int n, const int i0, const int j0, const float scale, float** cell);  

  public:
    CInfiniteAmortizedNoise2D(const unsigned n, const unsigned int s); 
    ~CInfiniteAmortizedNoise2D(); 
    float generate(int x, int y, const int m0, const int m1, const int n, float** cell); 
}; //CInfiniteAmortizedNoise2D