DLineHistogram.hpp

/*
 * Copyright (c) 2011-2016, Matthieu FAESSEL and ARMINES
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Matthieu FAESSEL, or ARMINES nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef _D_LINE_HISTOGRAM_HPP
#define _D_LINE_HISTOGRAM_HPP
 
#include "DBaseLineOperations.hpp"
 
namespace smil
{
  template <class T, class T_out = T>
  struct threshLine : public unaryLineFunctionBase<T, T_out> {
    T minVal, maxVal;
    T_out trueVal, falseVal;
 
    typedef typename unaryLineFunctionBase<T, T_out>::lineInType lineInType;
    typedef typename unaryLineFunctionBase<T, T_out>::lineOutType lineOutType;
 
    virtual void _exec(const lineInType lIn, const size_t size,
                       lineOutType lOut)
    {
      for (size_t i = 0; i < size; i++)
        lOut[i] = lIn[i] >= minVal && lIn[i] <= maxVal ? trueVal : falseVal;
    }
  };
 
  template <class Tin, class Tout>
  struct stretchHistLine : public unaryLineFunctionBase<Tin, Tout> {
    Tin inOrig;
    Tout outOrig;
    double coeff;
    typedef typename unaryLineFunctionBase<Tin>::lineType lineInType;
    typedef typename unaryLineFunctionBase<Tout>::lineType lineOutType;
 
    virtual void _exec(const lineInType lIn, const size_t size,
                       lineOutType lOut)
    {
      double newVal;
 
      for (size_t i = 0; i < size; i++) {
        newVal = double(outOrig) + (double(lIn[i]) - double(inOrig)) * coeff;
        if (newVal > double(numeric_limits<Tout>::max()))
          newVal = numeric_limits<Tout>::max();
        else if (newVal < double(numeric_limits<Tout>::min()))
          newVal = numeric_limits<Tout>::min();
        lOut[i] = Tout(round(newVal));
      }
    }
  };
 
 
} // namespace smil
 
#endif // _D_LINE_HISTOGRAM_HPP