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/*=========================================================================
Program: Visualization Toolkit
Module: vtkBoundedPointSource.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.
=========================================================================*/
#include "vtkBoundedPointSource.h"
#include "vtkCellArray.h"
#include "vtkMath.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPoints.h"
#include "vtkPolyData.h"
#include "vtkFloatArray.h"
#include "vtkPointData.h"
vtkStandardNewMacro(vtkBoundedPointSource);
//----------------------------------------------------------------------------
vtkBoundedPointSource::vtkBoundedPointSource()
{
this->NumberOfPoints = 100;
this->Bounds[0] = this->Bounds[2] = this->Bounds[4] = -1.0;
this->Bounds[1] = this->Bounds[3] = this->Bounds[5] = 1.0;
this->OutputPointsPrecision = SINGLE_PRECISION;
this->ProduceCellOutput = false;
this->ProduceRandomScalars = false;
this->ScalarRange[0] = 0.0;
this->ScalarRange[1] = 1.0;
this->SetNumberOfInputPorts(0);
}
//----------------------------------------------------------------------------
int vtkBoundedPointSource::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **vtkNotUsed(inputVector),
vtkInformationVector *outputVector)
{
// get the info object
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// get the ouptut
vtkPolyData *output = vtkPolyData::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkIdType ptId;
double x[3];
vtkPoints *newPoints = vtkPoints::New();
// Set the desired precision for the points in the output.
if(this->OutputPointsPrecision == vtkAlgorithm::DOUBLE_PRECISION)
{
newPoints->SetDataType(VTK_DOUBLE);
}
else
{
newPoints->SetDataType(VTK_FLOAT);
}
// Generate the points
newPoints->SetNumberOfPoints(this->NumberOfPoints);
double xmin = (this->Bounds[0] < this->Bounds[1] ? this->Bounds[0] : this->Bounds[1]);
double xmax = (this->Bounds[0] < this->Bounds[1] ? this->Bounds[1] : this->Bounds[0]);
double ymin = (this->Bounds[2] < this->Bounds[3] ? this->Bounds[2] : this->Bounds[3]);
double ymax = (this->Bounds[2] < this->Bounds[3] ? this->Bounds[3] : this->Bounds[2]);
double zmin = (this->Bounds[4] < this->Bounds[5] ? this->Bounds[4] : this->Bounds[5]);
double zmax = (this->Bounds[4] < this->Bounds[5] ? this->Bounds[5] : this->Bounds[4]);
vtkMath *math = vtkMath::New();
for (ptId=0; ptId<this->NumberOfPoints; ptId++)
{
x[0] = math->Random(xmin,xmax);
x[1] = math->Random(ymin,ymax);
x[2] = math->Random(zmin,zmax);
newPoints->SetPoint(ptId,x);
}
output->SetPoints(newPoints);
newPoints->Delete();
// Generate the scalars if requested
if ( this->ProduceRandomScalars )
{
vtkFloatArray *scalars = vtkFloatArray::New();
scalars->SetName("RandomScalars");
scalars->SetNumberOfTuples(this->NumberOfPoints);
float *s = static_cast<float*>(scalars->GetVoidPointer(0));
double sMin = (this->ScalarRange[0] < this->ScalarRange[1] ?
this->ScalarRange[0] : this->ScalarRange[1]);
double sMax = (this->ScalarRange[0] < this->ScalarRange[1] ?
this->ScalarRange[1] : this->ScalarRange[0]);
for (ptId=0; ptId<this->NumberOfPoints; ptId++)
{
*s++ = math->Random(sMin,sMax);
}
output->GetPointData()->SetScalars(scalars);
scalars->Delete();
}
// Generate the vertices if requested
if ( this->ProduceCellOutput )
{
vtkCellArray *newVerts = vtkCellArray::New();
newVerts->Allocate(newVerts->EstimateSize(1,this->NumberOfPoints));
newVerts->InsertNextCell(this->NumberOfPoints);
for (ptId=0; ptId<this->NumberOfPoints; ptId++)
{
newVerts->InsertCellPoint(ptId);
}
output->SetVerts(newVerts);
newVerts->Delete();
}
math->Delete();
return 1;
}
//----------------------------------------------------------------------------
void vtkBoundedPointSource::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Number Of Points: " << this->NumberOfPoints << "\n";
for(int i=0;i<6;i++)
{
os << indent << "Bounds[" << i << "]: " << this->Bounds[i] << "\n";
}
os << indent << "Output Points Precision: " << this->OutputPointsPrecision << "\n";
os << indent << "Produce Cell Output: "
<< (this->ProduceCellOutput ? "On\n" : "Off\n");
os << indent << "Produce Random Scalars: "
<< (this->ProduceRandomScalars ? "On\n" : "Off\n");
os << indent << "Scalar Range (" << this->ScalarRange[0] << ","
<< this->ScalarRange[1] << ")\n";
}
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