TrigTable.h

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/*
   For more information, please see: http://software.sci.utah.edu

   The MIT License

   Copyright (c) 2009 Scientific Computing and Imaging Institute,
   University of Utah.

   
   Permission is hereby granted, free of charge, to any person obtaining a
   copy of this software and associated documentation files (the "Software"),
   to deal in the Software without restriction, including without limitation
   the rights to use, copy, modify, merge, publish, distribute, sublicense,
   and/or sell copies of the Software, and to permit persons to whom the
   Software is furnished to do so, subject to the following conditions:

   The above copyright notice and this permission notice shall be included
   in all copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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*/

#ifndef SCI_Math_TrigTable_h
#define SCI_Math_TrigTable_h 1

#include <vector>
#include <Core/Math/share.h>

namespace SCIRun {

class SCISHARE SinCosTable {
  public:
    // Default constructor
    SinCosTable();
    // Constructor with table
    SinCosTable(int n, double min, double max, double scale=1.0);

    void build_table(int n, double min, double max, double scale=1.0);

    inline double sin(int i) const { return sindata_[i]; } 
    inline double cos(int i) const { return cosdata_[i]; } 

  private:
    int n_;
    std::vector<double> sindata_;
    std::vector<double> cosdata_;

    void fill_table( double max, double min, double scale );
};

} // end namespace

#endif