/*========================================================================= Program: Visualization Toolkit Module: vtkBridgePointIteratorOnCell.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 vtkBridgePointIteratorOnCell - Implementation of vtkGenericPointIterator. // .SECTION Description // It is just an example that show how to implement the Generic. It is also // used for testing and evaluating the Generic. // .SECTION See Also // vtkGenericPointIterator, vtkBridgeDataSet #include "vtkBridgePointIteratorOnCell.h" #include <assert.h> #include "vtkObjectFactory.h" #include "vtkBridgeDataSet.h" #include "vtkDataSet.h" #include "vtkIdList.h" #include "vtkBridgeCell.h" #include "vtkCell.h" vtkStandardNewMacro(vtkBridgePointIteratorOnCell); //----------------------------------------------------------------------------- // Description: // Default constructor. vtkBridgePointIteratorOnCell::vtkBridgePointIteratorOnCell() { this->DataSet=0; this->Cursor=0; this->PtIds=0; } //----------------------------------------------------------------------------- // Description: // Destructor. vtkBridgePointIteratorOnCell::~vtkBridgePointIteratorOnCell() { vtkSetObjectBodyMacro(DataSet,vtkBridgeDataSet,0); } //----------------------------------------------------------------------------- void vtkBridgePointIteratorOnCell::PrintSelf(ostream& os, vtkIndent indent) { this->Superclass::PrintSelf(os,indent); } //----------------------------------------------------------------------------- // Description: // Move iterator to first position if any (loop initialization). void vtkBridgePointIteratorOnCell::Begin() { if(this->PtIds!=0) { this->Cursor=0; } } //----------------------------------------------------------------------------- // Description: // Is there no point at iterator position? (exit condition). int vtkBridgePointIteratorOnCell::IsAtEnd() { return (this->PtIds==0)||(this->Cursor>=this->PtIds->GetNumberOfIds()); } //----------------------------------------------------------------------------- // Description: // Move iterator to next position. (loop progression). // \pre not_off: !IsAtEnd() void vtkBridgePointIteratorOnCell::Next() { assert("pre: not_off" && !IsAtEnd()); this->Cursor++; } //----------------------------------------------------------------------------- // Description: // Point at iterator position. // \pre not_off: !IsAtEnd() // \post result_exists: result!=0 double *vtkBridgePointIteratorOnCell::GetPosition() { assert("pre: not_off" && !IsAtEnd()); double *result=this->DataSet->Implementation->GetPoint(this->PtIds->GetId(this->Cursor)); assert("post: result_exists" && result!=0); return result; } //----------------------------------------------------------------------------- // Description: // Point at iterator position. // \pre not_off: !IsAtEnd() // \pre x_exists: x!=0 void vtkBridgePointIteratorOnCell::GetPosition(double x[3]) { assert("pre: not_off" && !IsAtEnd()); assert("pre: x_exists" && x!=0); this->DataSet->Implementation->GetPoint(this->PtIds->GetId(this->Cursor),x); } //----------------------------------------------------------------------------- // Description: // Unique identifier for the point, could be non-contiguous // \pre not_off: !IsAtEnd() vtkIdType vtkBridgePointIteratorOnCell::GetId() { assert("pre: not_off" && !IsAtEnd()); return this->PtIds->GetId(this->Cursor); } //----------------------------------------------------------------------------- // Description: // The iterator will iterate over the point of a cell // \pre cell_exists: cell!=0 void vtkBridgePointIteratorOnCell::InitWithCell(vtkBridgeCell *cell) { assert("pre: cell_exists" && cell!=0); vtkSetObjectBodyMacro(DataSet,vtkBridgeDataSet,cell->DataSet); this->PtIds = cell->Cell->GetPointIds(); }