/*========================================================================= Program: Visualization Toolkit Module: vtkBridgeCellIteratorOnDataSet.cxx 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. =========================================================================*/ // .NAME vtkBridgeCellIteratorOnDataSet - Iterate over cells of a dataset. // .SECTION See Also // vtkBridgeCellIterator, vtkBridgeDataSet, vtkBridgeCellIteratorStrategy #include "vtkBridgeCellIteratorOnDataSet.h" #include <assert.h> #include "vtkObjectFactory.h" #include "vtkBridgeCell.h" #include "vtkBridgeDataSet.h" #include "vtkDataSet.h" #include "vtkCell.h" vtkStandardNewMacro(vtkBridgeCellIteratorOnDataSet); //----------------------------------------------------------------------------- void vtkBridgeCellIteratorOnDataSet::PrintSelf(ostream& os, vtkIndent indent) { this->Superclass::PrintSelf(os,indent); } //----------------------------------------------------------------------------- vtkBridgeCellIteratorOnDataSet::vtkBridgeCellIteratorOnDataSet() { this->DataSet=0; this->Cell=vtkBridgeCell::New(); this->Id=0; this->Size=0; // this->DebugOn(); } //----------------------------------------------------------------------------- vtkBridgeCellIteratorOnDataSet::~vtkBridgeCellIteratorOnDataSet() { if(this->DataSet!=0) { this->DataSet->Delete(); this->DataSet=0; } this->Cell->Delete(); this->Cell=0; } //----------------------------------------------------------------------------- // Description: // Move iterator to first position if any (loop initialization). void vtkBridgeCellIteratorOnDataSet::Begin() { this->Id=-1; this->Next(); // skip cells of other dimensions } //----------------------------------------------------------------------------- // Description: // Is there no cell at iterator position? (exit condition). int vtkBridgeCellIteratorOnDataSet::IsAtEnd() { return (this->Id>=this->Size); } //----------------------------------------------------------------------------- // Description: // Cell at current position // \pre not_at_end: !IsAtEnd() // \pre c_exists: c!=0 // THREAD SAFE void vtkBridgeCellIteratorOnDataSet::GetCell(vtkGenericAdaptorCell *c) { assert("pre: not_at_end" && !IsAtEnd()); assert("pre: c_exists" && c!=0); vtkBridgeCell *c2=static_cast<vtkBridgeCell *>(c); c2->Init(this->DataSet,this->Id); } //----------------------------------------------------------------------------- // Description: // Cell at current position. // NOT THREAD SAFE // \pre not_at_end: !IsAtEnd() // \post result_exits: result!=0 vtkGenericAdaptorCell *vtkBridgeCellIteratorOnDataSet::GetCell() { assert("pre: not_at_end" && !IsAtEnd()); this->Cell->Init(this->DataSet,this->Id); vtkGenericAdaptorCell *result=this->Cell; assert("post: result_exits" && result!=0); return result; } //----------------------------------------------------------------------------- // Description: // Move iterator to next position. (loop progression). // \pre not_at_end: !IsAtEnd() void vtkBridgeCellIteratorOnDataSet::Next() { assert("pre: not_off" && !IsAtEnd()); vtkIdType size=this->Size; vtkCell *c; int found; this->Id++; if(this->Dim>=0) // skip cells of other dimensions than this->Dim { found=0; while( (this->Id<size) && (!found) ) { c=this->DataSet->Implementation->GetCell(this->Id); found=c->GetCellDimension()==this->Dim; this->Id++; } if(found) { this->Id--; } } } //----------------------------------------------------------------------------- // Description: // Used internally by vtkBridgeDataSet. // Iterate over cells of `ds' of some dimension `dim'. // \pre ds_exists: ds!=0 // \pre valid_dim_range: (dim>=-1) && (dim<=3) void vtkBridgeCellIteratorOnDataSet::InitWithDataSet(vtkBridgeDataSet *ds, int dim) { assert("pre: ds_exists" && ds!=0); assert("pre: valid_dim_range" && (dim>=-1) && (dim<=3)); this->Dim=dim; vtkSetObjectBodyMacro(DataSet,vtkBridgeDataSet,ds); this->Size=ds->GetNumberOfCells(); this->Id=this->Size; // at end }