dox/Filtering/vtkDataSetAttributes.h

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

  Program:   Visualization Toolkit
  Module:    vtkDataSetAttributes.h

  Copyright (c) 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 vtkLookupTable;

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

  virtual void Initialize();

  virtual void Update() {}

  // -- shallow and deep copy -----------------------------------------------

  virtual void DeepCopy(vtkFieldData *pd);

  virtual void ShallowCopy(vtkFieldData *pd);

  // -- attribute types -----------------------------------------------------
//BTX
  // Always keep NUM_ATTRIBUTES as the last entry
  enum AttributeTypes 
  {
    SCALARS=0,
    VECTORS=1,
    NORMALS=2,
    TCOORDS=3,
    TENSORS=4,
    GLOBALIDS=5,
    PEDIGREEIDS=6,
    EDGEFLAG=7,
    NUM_ATTRIBUTES
  };

  enum AttributeLimitTypes 
  {
    MAX, 
    EXACT, 
    NOLIMIT
  };
//ETX


  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();


  int SetGlobalIds(vtkDataArray* da);
  int SetActiveGlobalIds(const char* name);
  vtkDataArray* GetGlobalIds();


  int SetPedigreeIds(vtkAbstractArray* da);
  int SetActivePedigreeIds(const char* name);
  vtkAbstractArray* GetPedigreeIds();


  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);
  vtkDataArray* GetGlobalIds(const char* name);
  vtkAbstractArray* GetPedigreeIds(const char* name);

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

  int SetActiveAttribute(int index, int attributeType);

  void GetAttributeIndices(int* indexArray);

  int IsArrayAnAttribute(int idx);

  vtkDataArray* GetAttribute(int attributeType);

  vtkAbstractArray* GetAbstractAttribute(int attributeType);


  virtual void RemoveArray(const char *name);
  virtual void RemoveArray(int index);



  static const char* GetAttributeTypeAsString(int attributeType);
  static const char* GetLongAttributeTypeAsString(int attributeType);

  // -- attribute copy properties ------------------------------------------

//BTX
  enum AttributeCopyOperations
  {
    COPYTUPLE=0,
    INTERPOLATE=1,
    PASSDATA=2,
    ALLCOPY  //all of the above
  };
//ETX

  void SetCopyAttribute (int index, int value, int ctype=ALLCOPY);


  void SetCopyScalars(int i, int ctype=ALLCOPY);
  int GetCopyScalars(int ctype=ALLCOPY);
  vtkBooleanMacro(CopyScalars, int);


  void SetCopyVectors(int i, int ctype=ALLCOPY);
  int GetCopyVectors(int ctype=ALLCOPY);
  vtkBooleanMacro(CopyVectors, int);


  void SetCopyNormals(int i, int ctype=ALLCOPY);
  int GetCopyNormals(int ctype=ALLCOPY);
  vtkBooleanMacro(CopyNormals, int);


  void SetCopyTCoords(int i, int ctype=ALLCOPY);
  int GetCopyTCoords(int ctype=ALLCOPY);
  vtkBooleanMacro(CopyTCoords, int);


  void SetCopyTensors(int i, int ctype=ALLCOPY);
  int GetCopyTensors(int ctype=ALLCOPY);
  vtkBooleanMacro(CopyTensors, int);


  void SetCopyGlobalIds(int i, int ctype=ALLCOPY);
  int GetCopyGlobalIds(int ctype=ALLCOPY);
  vtkBooleanMacro(CopyGlobalIds, int);


  void SetCopyPedigreeIds(int i, int ctype=ALLCOPY);
  int GetCopyPedigreeIds(int ctype=ALLCOPY);
  vtkBooleanMacro(CopyPedigreeIds, int);

  virtual void CopyAllOn(int ctype=ALLCOPY);

  virtual void CopyAllOff(int ctype=ALLCOPY);

  // -- passthrough operations ----------------------------------------------

  virtual void PassData(vtkFieldData* fd);

  // -- copytuple operations ------------------------------------------------


  void CopyAllocate(vtkDataSetAttributes* pd, vtkIdType sze=0,
                    vtkIdType ext=1000)
    {
      this->CopyAllocate(pd, sze, ext, 0);
    }
  void CopyAllocate(vtkDataSetAttributes* pd, vtkIdType sze,
                    vtkIdType ext, int shallowCopyArrays);


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

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



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


  // -- interpolate operations ----------------------------------------------


  void InterpolateAllocate(vtkDataSetAttributes* pd, vtkIdType sze=0,
                           vtkIdType ext=1000)
    {
      this->InterpolateAllocate(pd, sze, ext, 0);
    }
  void InterpolateAllocate(vtkDataSetAttributes* pd, vtkIdType sze,
                           vtkIdType ext, int shallowCopyArrays);
  

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

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


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

//BTX
  class FieldList;

  // field list copy operations ------------------------------------------


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


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


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


  void InterpolatePoint(
    vtkDataSetAttributes::FieldList& list,
    vtkDataSetAttributes *fromPd,
    int idx, vtkIdType toId, 
    vtkIdList *ids, double *weights);

  friend class vtkDataSetAttributes::FieldList;
//ETX

//BTX
protected:
  vtkDataSetAttributes();
  ~vtkDataSetAttributes();

  void InternalCopyAllocate(vtkDataSetAttributes* pd, 
                            int ctype,
                            vtkIdType sze=0,
                            vtkIdType ext=1000,
                            int shallowCopyArrays=0);

  void InternalCopyAllocate(
    vtkDataSetAttributes::FieldList& list,
    int ctype,
    vtkIdType sze, vtkIdType ext);

  virtual void InitializeFields();

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

  vtkFieldData::BasicIterator RequiredArrays;

  int* TargetIndices;

  static const int NumberOfAttributeComponents[NUM_ATTRIBUTES];
  static const int AttributeLimits[NUM_ATTRIBUTES];
  static const char AttributeNames[NUM_ATTRIBUTES][12];
  static const char LongAttributeNames[NUM_ATTRIBUTES][35];

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

  vtkFieldData::BasicIterator  ComputeRequiredArrays(vtkDataSetAttributes* pd, int ctype);

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 vtkInternalComponentNames;
  class VTK_FILTERING_EXPORT FieldList
  {
  public:
    FieldList(int numInputs);
    ~FieldList();
    void PrintSelf(ostream &os, vtkIndent indent);

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

    void UnionFieldList(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]; }
    const char* GetFieldName(int i) { return this->Fields[i]; }
    int GetFieldComponents(int i) { return this->FieldComponents[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&) {}

    void SetFieldIndex(int i, int index)
      { this->FieldIndices[i] = index; }
  private:
    void SetField(int index, vtkAbstractArray *da);
    void RemoveField(const char *name);
    void ClearFields();
    void GrowBy(unsigned int delta);

    int NumberOfFields; //the number of fields (including five named attributes)
    // These keep track of what is common across datasets. The first
    // six items are always named attributes.
    char** Fields;                     // the names of the fields
    int *FieldTypes;                   // the types of the fields
    int *FieldComponents;              // the number of components in field    
    int *FieldIndices;                 // output data array index    
    vtkLookupTable **LUT;              // luts associated with each array
    vtkInformation **FieldInformation; // Information map associated with each array
    
    vtkInternalComponentNames **FieldComponentsNames;       // the name for each component in the field

    vtkIdType NumberOfTuples; // a running total of values

    //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