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vtkHyperTreeGridCursor.h
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vtkHyperTreeGridCursor.h
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkHyperTreeCursor.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.
=========================================================================*/
/**
* @class vtkHyperTreeGridCursor
* @brief Objects for depth-first traversal HyperTreeGrids.
*
*
* Objects that can perform depth-first traversal of hyper tree grids,
* take into account more parameters (related to the grid structure) than
* the compact hyper tree cursor implemented in vtkHyperTree can.
* This is an abstract class.
* Cursors are created by the HyperTreeGrid implementation.
*
* @sa
* vtkHyperTreeCursor vtkHyperTree vtkHyperTreeGrid
*
* @par Thanks:
* This class was written by Guénolé Harel and Jacques-Bernard Lekien, 2014
* This class was re-written by Philippe Pebay, 2016
* This work was supported by Commissariat a l'Energie Atomique (CEA/DIF)
*/
#ifndef vtkHyperTreeGridCursor_h
#define vtkHyperTreeGridCursor_h
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkHyperTreeCursor.h"
class vtkHyperTree;
class vtkHyperTreeGrid;
class vtkIdList;
class VTKCOMMONDATAMODEL_EXPORT vtkHyperTreeGridCursor : public vtkHyperTreeCursor
{
public:
vtkTypeMacro(vtkHyperTreeGridCursor, vtkHyperTreeCursor);
void PrintSelf( ostream& os, vtkIndent indent ) override;
static vtkHyperTreeGridCursor* New();
/**
* Create a copy of `this'.
* \post results_exists:result!=0
*/
vtkHyperTreeGridCursor* Clone() override;
/**
* Initialize cursor at root of given tree index in grid.
*/
virtual void Initialize( vtkHyperTreeGrid*, vtkIdType );
//@{
/**
* Set the hyper tree grid to which the cursor is pointing.
*/
virtual void SetGrid( vtkHyperTreeGrid* );
vtkGetObjectMacro(Grid,vtkHyperTreeGrid);
//@}
//@{
/**
* Set the hyper tree to which the cursor is pointing.
*/
void SetTree( vtkHyperTree* ) override;
vtkHyperTree* GetTree() override {return this->Tree;};
//vtkGetObjectMacro(Tree,vtkHyperTree);
//@}
/**
* Return the index of the current vertex in the tree.
*/
vtkIdType GetVertexId() override;
/**
* Return the global index (relative to the grid) of the
* current vertex in the tree.
*/
virtual vtkIdType GetGlobalNodeIndex();
/**
* Is the cursor pointing to a leaf?
*/
bool IsLeaf() override;
/**
* Is the cursor at tree root?
*/
bool IsRoot() override;
/**
* Get the level of the tree vertex pointed by the cursor.
*/
unsigned int GetLevel() override {return this->Level;};
/**
* Return the child number of the current vertex relative to its parent.
* \pre not_root: !IsRoot().
* \post valid_range: result>=0 && result<GetNumberOfChildren()
*/
int GetChildIndex() override;
/**
* Move the cursor to the root vertex.
* \pre can be root
* \post is_root: IsRoot()
*/
void ToRoot() override;
/**
* Move the cursor to the parent of the current vertex.
* \pre not_root: !IsRoot()
*/
void ToParent() override;
/**
* Move the cursor to child `child' of the current vertex.
* \pre not_leaf: !IsLeaf()
* \pre valid_child: child>=0 && child<this->GetNumberOfChildren()
*/
void ToChild( int child ) override;
/**
* Move the cursor to the same vertex pointed by `other'.
* \pre other_exists: other!=0
* \pre same_hypertree: this->SameTree(other);
* \post equal: this->IsEqual(other)
* NB: not implemented
*/
void ToSameVertex( vtkHyperTreeCursor* vtkNotUsed(other) ) override { return; }
/**
* Is `this' equal to `other'?
* \pre other_exists: other!=0
* \pre same_hypertree: this->SameTree(other);
* NB: not implemented
*/
bool IsEqual( vtkHyperTreeCursor* vtkNotUsed(other) ) override { return false; }
/**
* Are `this' and `other' pointing on the same hypertree?
* \pre other_exists: other!=0
* NB: not implemented
*/
int SameTree( vtkHyperTreeCursor* vtkNotUsed(other) ) override { return 0; }
/**
* Return the number of children for each node (non-vertex leaf) of the tree.
* \post positive_number: result>0
*/
int GetNumberOfChildren() override;
/**
* Return the dimension of the tree.
* \post positive_result: result>0
*/
int GetDimension() override;
/**
* Compute the origin of the cursor.
* NB: The basic hyper tree grid cursor does not have an origin.
*/
virtual double* GetOrigin() { return nullptr; }
/**
* Compute the size of the cursor.
* NB: The basic hyper tree grid cursor does not have a size.
*/
virtual double* GetSize() { return nullptr; }
/**
* Compute the bounds of the cursor.
* NB: The basic hyper tree grid cursor does not have bounds.
*/
virtual void GetBounds( double pt[6] )
{ pt[0] = pt[1] = pt[2] = pt[3] = pt[4] = pt[5] = 0.; }
/**
* Compute the center coordinates of the cursor.
* NB: The basic hyper tree grid cursor is always centered at 0.
*/
virtual void GetPoint( double pt[3] ) { pt[0] = pt[1] = pt[2] = 0.; }
/**
* Return the number of neighborhood cursors
* The neighborhood definition depends on the type of cursor.
* NB: Only super cursors keep track of neighborhoods.
*/
virtual unsigned int GetNumberOfCursors() { return 0; }
/**
* Return the cursor pointing into i-th neighbor.
* The neighborhood definition depends on the type of cursor.
* NB: Only super cursors keep track of neighborhoods.
*/
virtual vtkHyperTreeGridCursor* GetCursor( unsigned int )
{ return nullptr; }
/**
* Return the list of cursors pointing to the leaves touching a
* given corner of the cell.
* Return whether the considered cell is the owner of said corner.
* NB: Only the Moore super cursor implements this functionality.
*/
virtual bool GetCornerCursors( unsigned int, unsigned int, vtkIdList* )
{ return false; }
protected:
/**
* Constructor
*/
vtkHyperTreeGridCursor();
/**
* Destructor
*/
~vtkHyperTreeGridCursor() override;
// Hyper tree grid to which the cursor is attached
vtkHyperTreeGrid* Grid;
// Hyper tree to which the cursor is attached
vtkHyperTree* Tree;
// Level in the tree at which the cursor is positioned
unsigned int Level;
// Index either in the nodes or parent (if leaf)
vtkIdType Index;
// Is center of cursor at a leaf?
bool Leaf;
private:
vtkHyperTreeGridCursor(const vtkHyperTreeGridCursor&) = delete;
void operator=(const vtkHyperTreeGridCursor&) = delete;
};
#endif