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graphics/vtkPLOT3DReader.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkPLOT3DReader.h,v $
  Language:  C++


Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
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 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 AUTHORS OR 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 __vtkPLOT3DReader_h
#define __vtkPLOT3DReader_h

#include <stdio.h>
#include "vtkStructuredGridSource.h"
#include "vtkScalars.h"
#include "vtkVectors.h"

// file formats
#define VTK_WHOLE_SINGLE_GRID_NO_IBLANKING 0
#define VTK_WHOLE_MULTI_GRID_NO_IBLANKING 2

class VTK_EXPORT vtkPLOT3DReader : public vtkStructuredGridSource 
{
public:
  static vtkPLOT3DReader *New();
  vtkTypeMacro(vtkPLOT3DReader,vtkStructuredGridSource);
  void PrintSelf(ostream& os, vtkIndent indent);

  vtkSetClampMacro(FileFormat,int,0,7);
  vtkGetMacro(FileFormat,int);

  vtkSetStringMacro(XYZFileName);
  vtkGetStringMacro(XYZFileName);

  vtkSetStringMacro(QFileName);
  vtkGetStringMacro(QFileName);

  vtkSetStringMacro(FunctionFileName);
  vtkGetStringMacro(FunctionFileName);

  vtkSetStringMacro(VectorFunctionFileName);
  vtkGetStringMacro(VectorFunctionFileName);

  vtkSetMacro(GridNumber,int);
  vtkGetMacro(GridNumber,int);

  vtkSetMacro(ScalarFunctionNumber,int);
  vtkGetMacro(ScalarFunctionNumber,int);

  vtkSetMacro(VectorFunctionNumber,int);
  vtkGetMacro(VectorFunctionNumber,int);

  // these are read from PLOT3D file
  vtkGetMacro(Fsmach,float);

  vtkGetMacro(Alpha,float);

  vtkGetMacro(Re,float);

  vtkGetMacro(Time,float);

  vtkSetMacro(R,float);
  vtkGetMacro(R,float);

  vtkSetMacro(Gamma,float);
  vtkGetMacro(Gamma,float);

  vtkSetMacro(Uvinf,float);
  vtkGetMacro(Uvinf,float);

  vtkSetMacro(Vvinf,float);
  vtkGetMacro(Vvinf,float);

  vtkSetMacro(Wvinf,float);
  vtkGetMacro(Wvinf,float);

  vtkGetMacro(NumberOfGrids, int);

protected:
  vtkPLOT3DReader();
  ~vtkPLOT3DReader();
  vtkPLOT3DReader(const vtkPLOT3DReader&) {};
  void operator=(const vtkPLOT3DReader&) {};

  void ExecuteInformation();
  void Execute();
  int GetFileType(FILE *fp);

  //plot3d FileNames
  int FileFormat; //various PLOT3D formats
  char *XYZFileName;
  char *QFileName;
  char *FunctionFileName;
  char *VectorFunctionFileName;

  //flags describing data to be read
  int GridNumber; //for multi-grid files, the one we're interested in
  int ScalarFunctionNumber;
  int VectorFunctionNumber;
  int FunctionFileFunctionNumber;
  void MapFunction(int fNumber,vtkPointData *outputPD);

  //temporary variables used during read
  float *TempStorage;
  int NumberOfPoints;
  int NumberOfGrids;

  //supplied in PLOT3D file
  float Fsmach;
  float Alpha;
  float Re;
  float Time;

  //parameters used in computing derived functions
  float R; 
  float Gamma;
  float Uvinf;
  float Vvinf;
  float Wvinf;
  
  //methods to read data
  int ReadBinaryGrid(FILE *fp,vtkStructuredGrid *output);
  int ReadBinaryGridDimensions(FILE *fp, vtkStructuredGrid *output);
  int ReadBinarySolution(FILE *fp, vtkStructuredGrid *output);
  int ReadBinaryFunctionFile(FILE *fp, vtkStructuredGrid *output);
  int ReadBinaryVectorFunctionFile(FILE *fp, vtkStructuredGrid *output);

  vtkPoints *Grid;
  vtkScalars *Density;
  vtkScalars *Energy;
  vtkVectors *Momentum;

  // derived functions from data in PLOT3D files
  void ComputeDensity(vtkPointData *outputPD);
  void ComputePressure(vtkPointData *outputPD);
  void ComputeTemperature(vtkPointData *outputPD);
  void ComputeEnthalpy(vtkPointData *outputPD);
  void ComputeInternalEnergy(vtkPointData *outputPD);
  void ComputeKineticEnergy(vtkPointData *outputPD);
  void ComputeVelocityMagnitude(vtkPointData *outputPD);
  void ComputeStagnationEnergy(vtkPointData *outputPD);
  void ComputeEntropy(vtkPointData *outputPD);
  void ComputeSwirl(vtkPointData *outputPD);

  void ComputeVelocity(vtkPointData *outputPD);
  void ComputeVorticity(vtkPointData *outputPD);
  void ComputeMomentum(vtkPointData *outputPD);
  void ComputePressureGradient(vtkPointData *outputPD);
};

#endif

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