Common/vtkDataSetAttributes.h

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

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

  Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef __vtkDataSetAttributes_h
#define __vtkDataSetAttributes_h

#include "vtkFieldData.h"

class VTK_COMMON_EXPORT vtkDataSetAttributes : public vtkFieldData
{
public:
  static vtkDataSetAttributes *New();
  
  vtkTypeRevisionMacro(vtkDataSetAttributes,vtkFieldData);
  void PrintSelf(ostream& os, vtkIndent indent);

  virtual void Initialize();

  virtual void Update() {}

  virtual void PassData(vtkFieldData* fd);


  void CopyAllocate(vtkDataSetAttributes* pd, vtkIdType sze=0,
                    vtkIdType ext=1000);

  void CopyData(vtkDataSetAttributes *fromPd, vtkIdType fromId, vtkIdType toId);


  void InterpolateAllocate(vtkDataSetAttributes* pd, vtkIdType sze=0,
                           vtkIdType ext=1000);
  

  void CopyStructuredData(vtkDataSetAttributes *inDsa,
                          const int *inExt, const int *outExt);


  void InterpolatePoint(vtkDataSetAttributes *fromPd, vtkIdType toId, 
                        vtkIdList *ids, float *weights);
  

  void InterpolateEdge(vtkDataSetAttributes *fromPd, vtkIdType toId,
                       vtkIdType p1, vtkIdType p2, float t);


  void InterpolateTime(vtkDataSetAttributes *from1, 
                       vtkDataSetAttributes *from2,
                       vtkIdType id, float t);

  virtual void DeepCopy(vtkFieldData *pd);

  virtual void ShallowCopy(vtkFieldData *pd);


  int SetScalars(vtkDataArray* da);
  int SetActiveScalars(const char* name);
  vtkDataArray* GetScalars();


  int SetVectors(vtkDataArray* da);
  int SetActiveVectors(const char* name);
  vtkDataArray* GetVectors();


  int SetNormals(vtkDataArray* da);
  int SetActiveNormals(const char* name);
  vtkDataArray* GetNormals();


  int SetTCoords(vtkDataArray* da);
  int SetActiveTCoords(const char* name);
  vtkDataArray* GetTCoords();


  int SetTensors(vtkDataArray* da);
  int SetActiveTensors(const char* name);
  vtkDataArray* GetTensors();


  vtkDataArray* GetScalars(const char* name);
  vtkDataArray* GetVectors(const char* name);
  vtkDataArray* GetNormals(const char* name);
  vtkDataArray* GetTCoords(const char* name);
  vtkDataArray* GetTensors(const char* name);

  int SetActiveAttribute(const char* name, int attributeType);

  int SetActiveAttribute(int index, int attributeType);

  void SetCopyAttribute (int index, int value);


  void SetCopyScalars(int i);
  int GetCopyScalars();
  vtkBooleanMacro(CopyScalars, int);


  void SetCopyVectors(int i);
  int GetCopyVectors();
  vtkBooleanMacro(CopyVectors, int);


  void SetCopyNormals(int i);
  int GetCopyNormals();
  vtkBooleanMacro(CopyNormals, int);


  void SetCopyTCoords(int i);
  int GetCopyTCoords();
  vtkBooleanMacro(CopyTCoords, int);


  void SetCopyTensors(int i);
  int GetCopyTensors();
  vtkBooleanMacro(CopyTensors, int);

  virtual void CopyAllOn();

  virtual void CopyAllOff();


  void CopyTuple(vtkDataArray *fromData, vtkDataArray *toData, 
                 vtkIdType fromId, vtkIdType toId);

  void GetAttributeIndices(int* indexArray);

  int IsArrayAnAttribute(int idx);

  vtkDataArray* GetAttribute(int attributeType);

  virtual void RemoveArray(const char *name);

  static const char* GetAttributeTypeAsString(int attributeType);

//BTX
  // Always keep NUM_ATTRIBUTES as the last entry
  enum AttributeTypes 
  {
    SCALARS=0,
    VECTORS=1,
    NORMALS=2,
    TCOORDS=3,
    TENSORS=4,
    NUM_ATTRIBUTES
  };

  enum AttributeLimitTypes 
  {
    MAX, 
    EXACT, 
    NOLIMIT
  };

  class FieldList;


  void CopyAllocate(vtkDataSetAttributes::FieldList& list, vtkIdType sze=0, 
                    vtkIdType ext=1000);


  void CopyData(vtkDataSetAttributes::FieldList& list, 
                vtkDataSetAttributes* dsa, int idx, vtkIdType fromId,
                vtkIdType toId);

  friend class vtkDataSetAttributes::FieldList;
//ETX

protected:
  vtkDataSetAttributes();
  ~vtkDataSetAttributes();

  // special methods to support managing data
  void InterpolateTuple(vtkDataArray *fromData, vtkDataArray *toData,
                        vtkIdType toId, vtkIdList *ptIds, float *weights);
  void InterpolateTuple(vtkDataArray *fromData, vtkDataArray *toData,
                        vtkIdType toId, vtkIdType id1, vtkIdType id2, float t);
  void InterpolateTuple(vtkDataArray *fromData1, vtkDataArray *fromData2, 
                        vtkDataArray *toData, vtkIdType id, float t);

  virtual void InitializeFields();

  int AttributeIndices[NUM_ATTRIBUTES]; //index to attribute array in field data
  int CopyAttributeFlags[NUM_ATTRIBUTES]; //copy flag for attribute data

//BTX
  vtkFieldData::BasicIterator RequiredArrays;
//ETX

  int* TargetIndices;

  virtual void RemoveArray(int index);

  static const int NumberOfAttributeComponents[NUM_ATTRIBUTES];
  static const int AttributeLimits[NUM_ATTRIBUTES];
  static const char AttributeNames[NUM_ATTRIBUTES][10];

private:
  int SetAttribute(vtkDataArray* da, int attributeType);
  static int CheckNumberOfComponents(vtkDataArray* da, int attributeType);

//BTX
  vtkFieldData::BasicIterator  ComputeRequiredArrays(vtkDataSetAttributes* pd);

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

public:
  // This public class is used to perform set operations, other misc. 
  // operations on fields. For example, vtkAppendFilter uses it to 
  // determine which attributes the input datasets share in common.
  class VTK_COMMON_EXPORT FieldList
  {
  public:
    FieldList(int numInputs);
    ~FieldList();

    void InitializeFieldList(vtkDataSetAttributes* dsa);
    void IntersectFieldList(vtkDataSetAttributes* dsa);

    //Determine whether data is available
    int IsAttributePresent(int attrType); //true/false attributes specified
    
    // Accessor methods.
    int GetNumberOfFields() { return this->NumberOfFields; }
    int GetFieldIndex(int i) { return this->FieldIndices[i]; }
    int GetDSAIndex(int index, int i) { return this->DSAIndices[index][i]; }
    
    friend class vtkDataSetAttributes;

  protected:
    FieldList(const FieldList&) {} //prevent these methods from being used
    void operator=(const FieldList&) {}

  private:
    void SetField(int index, vtkDataArray *da);
    void RemoveField(const char *name);
    void ClearFields();
    
    //These keep track of what is common across datasets
    char** Fields; //the names of the fields (first five are named attributes)
    int *FieldTypes; //the types of the fields (first five are named 
                     //attributes)
    int *FieldComponents; //the number of components in each  fields 
                          // (first five are named attributes)
    int *FieldIndices; //output data array index 
                       // (first five are named attributes)
    vtkLookupTable **LUT; //luts associated with each array
    vtkIdType NumberOfTuples; //a running total of values
    int NumberOfFields; //the number of fields
    
    //For every vtkDataSetAttributes that are processed, keep track of the 
    //indices into various things. The indices are organized so that the
    //first NUM_ATTRIBUTES refer to attributes, the next refer to the 
    //non-attribute fields, for a total of NUM_ATTRIBUTES + NumberOfFields.
    //CurrentInput is the current input being processed.
    int **DSAIndices;
    int NumberOfDSAIndices;
    int CurrentInput;
  };

//ETX
};

#endif

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