dox/Common/vtkKWEFunctionToGLSL.h

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//=============================================================================
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//=============================================================================

#ifndef __vtkKWEFunctionToGLSL_h
#define __vtkKWEFunctionToGLSL_h

#include "vtkFunctionParser.h"
#include "VTKEdgeConfigure.h" // include configuration header

class vtkStdString;
class vtkOStrStreamWrapper;

class VTKEdge_COMMON_EXPORT vtkKWEFunctionToGLSL : public vtkFunctionParser
{
public:
  vtkTypeRevisionMacro(vtkKWEFunctionToGLSL,vtkFunctionParser);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkKWEFunctionToGLSL *New();

  virtual bool GetParseStatus();

  virtual void GenerateGLSL();

  virtual int GetResultDimension();

  virtual vtkStdString *GetGLSLCode();

  virtual bool GetScalarIsUsed(int index);

  virtual bool GetVectorIsUsed(int index);

  vtkStdString *GetGLSLScalarName(int index);

  vtkStdString *GetGLSLVectorName(int index);

  virtual int GetNumberOfUsedScalarVariables();

  virtual int GetNumberOfUsedVectorVariables();

protected:
  vtkKWEFunctionToGLSL();

  ~vtkKWEFunctionToGLSL();

  void AllocateStringStack();

  void DeleteStringStack();

  void BuildGLSLVariableNames();

  bool ParseStatus;
  vtkStdString *GLSLCode;

  vtkStdString *StringStack;
  int *PrecedenceStack;

  bool *ScalarIsUsed;
  int ScalarIsUsedSize;
  vtkStdString *GLSLScalarNames;
  int NumberOfUsedScalarVariables;

  bool *VectorIsUsed;
  int VectorIsUsedSize;
  vtkStdString *GLSLVectorNames;
  int NumberOfUsedVectorVariables;

  int ResultDimension; // 1 or 3

private:
  vtkKWEFunctionToGLSL(const vtkKWEFunctionToGLSL&);  // Not implemented.
  void operator=(const vtkKWEFunctionToGLSL&);  // Not implemented.
};

#endif