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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkProgrammableFilter.cxx,v $
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.
=========================================================================*/
#include "vtkProgrammableFilter.h"
#include "vtkPolyData.h"
#include "vtkStructuredGrid.h"
#include "vtkStructuredPoints.h"
#include "vtkUnstructuredGrid.h"
#include "vtkRectilinearGrid.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
vtkCxxRevisionMacro(vtkProgrammableFilter, "$Revision: 1.21 $");
vtkStandardNewMacro(vtkProgrammableFilter);
// Construct programmable filter with empty execute method.
vtkProgrammableFilter::vtkProgrammableFilter()
{
this->ExecuteMethod = NULL;
this->ExecuteMethodArg = NULL;
this->ExecuteMethodArgDelete = NULL;
}
vtkProgrammableFilter::~vtkProgrammableFilter()
{
// delete the current arg if there is one and a delete meth
if ((this->ExecuteMethodArg)&&(this->ExecuteMethodArgDelete))
{
(*this->ExecuteMethodArgDelete)(this->ExecuteMethodArg);
}
}
// Get the input as a concrete type. This method is typically used by the
// writer of the filter function to get the input as a particular type (i.e.,
// it essentially does type casting). It is the users responsibility to know
// the correct type of the input data.
vtkPolyData *vtkProgrammableFilter::GetPolyDataInput()
{
return (vtkPolyData *)this->GetInput();
}
// Get the input as a concrete type.
vtkStructuredPoints *vtkProgrammableFilter::GetStructuredPointsInput()
{
return (vtkStructuredPoints *)this->GetInput();
}
// Get the input as a concrete type.
vtkStructuredGrid *vtkProgrammableFilter::GetStructuredGridInput()
{
return (vtkStructuredGrid *)this->GetInput();
}
// Get the input as a concrete type.
vtkUnstructuredGrid *vtkProgrammableFilter::GetUnstructuredGridInput()
{
return (vtkUnstructuredGrid *)this->GetInput();
}
// Get the input as a concrete type.
vtkRectilinearGrid *vtkProgrammableFilter::GetRectilinearGridInput()
{
return (vtkRectilinearGrid *)this->GetInput();
}
// Specify the function to use to operate on the point attribute data. Note
// that the function takes a single (void *) argument.
void vtkProgrammableFilter::SetExecuteMethod(void (*f)(void *), void *arg)
{
if ( f != this->ExecuteMethod || arg != this->ExecuteMethodArg )
{
// delete the current arg if there is one and a delete meth
if ((this->ExecuteMethodArg)&&(this->ExecuteMethodArgDelete))
{
(*this->ExecuteMethodArgDelete)(this->ExecuteMethodArg);
}
this->ExecuteMethod = f;
this->ExecuteMethodArg = arg;
this->Modified();
}
}
// Set the arg delete method. This is used to free user memory.
void vtkProgrammableFilter::SetExecuteMethodArgDelete(void (*f)(void *))
{
if ( f != this->ExecuteMethodArgDelete)
{
this->ExecuteMethodArgDelete = f;
this->Modified();
}
}
int vtkProgrammableFilter::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// get the input and ouptut
vtkDataSet *input = vtkDataSet::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkDataSet *output = vtkDataSet::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkDebugMacro(<<"Executing programmable filter");
// First, copy the input to the output as a starting point
output->CopyStructure( input );
// Now invoke the procedure, if specified.
if ( this->ExecuteMethod != NULL )
{
(*this->ExecuteMethod)(this->ExecuteMethodArg);
}
return 1;
}
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