/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkFloatScalars.h
  Language:  C++
  Date:      $Date$
  Version:   $Revision$


Copyright (c) 1993-2000 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

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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 name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

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 REGENTS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
// .NAME vtkFloatScalars - (obsolete)floating point representation of scalars
// .SECTION Description
// vtkFloatScalars is an (obsolete) concrete implementation of
// vtkScalars. Scalars coordinates are represented using float values.

#ifndef __vtkFloatScalars_h
#define __vtkFloatScalars_h

#include "vtkScalars.h"
#include "vtkFloatArray.h"

class VTK_EXPORT vtkFloatScalars : public vtkScalars
{
public:
  static vtkFloatScalars *New();
  
  // Description:
  // Set the data type for this object.
  void SetDataType(int dataType);

  // Description:
  // Set the data for this object. Only accepts VTK_FLOAT type.
  void SetData(vtkDataArray *);

  // Description:
  // Get pointer to array of data starting at data position "id".
  float *GetPointer(const int id);

  // Description:
  // Get pointer to data array. Useful for direct writes of data. MaxId is
  // bumped by number (and memory allocated if necessary). Id is the
  // location you wish to write into; number is the number of scalars to
  // write.
  float *WritePointer(const int id, const int number);

protected:
  vtkFloatScalars() {};
  ~vtkFloatScalars() {};
  vtkFloatScalars(const vtkFloatScalars&) {};
  void operator=(const vtkFloatScalars&) {};

private:
  // hide the vtkScalars' New() method
  static vtkFloatScalars *New(int) { return vtkFloatScalars::New();};
  static vtkFloatScalars *New(int dataType, int numComp)
        { return (vtkFloatScalars *)vtkScalars::New(dataType, numComp);};
};

inline float *vtkFloatScalars::GetPointer(const int id)
{
  return ((vtkFloatArray *)this->Data)->GetPointer(this->Data->GetNumberOfComponents()*id);
} 

inline float *vtkFloatScalars::WritePointer(const int id, const int number)
{
  int num=this->Data->GetNumberOfComponents();
  
  return ((vtkFloatArray *)this->Data)->WritePointer(num*id,num*number);
}

inline void vtkFloatScalars::SetData(vtkDataArray *data)
{
  if ( data->GetDataType() != VTK_FLOAT )
    {
    vtkErrorMacro(<<"Float scalars only accepts float data type");
    return;
    }
  vtkScalars::SetData(data);
}

inline void vtkFloatScalars::SetDataType(int type)
{
  if ( type != VTK_FLOAT )
    {
    vtkErrorMacro(<<"Float Scalars only accepts float data type");
    return;
    }

  vtkScalars::SetDataType(type);
}

#endif

