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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTreeRingToPolyData.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.
=========================================================================*/
/*-------------------------------------------------------------------------
Copyright 2008 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#include "vtkTreeRingToPolyData.h"
#include "vtkCellArray.h"
#include "vtkCellData.h"
#include "vtkCommand.h"
#include "vtkFloatArray.h"
#include "vtkMath.h"
#include "vtkIdTypeArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkTimerLog.h"
#include "vtkTree.h"
#include "vtkStripper.h"
#include "vtkSectorSource.h"
#include "vtkAppendPolyData.h"
#include "vtkSmartPointer.h"
#define VTK_CREATE(type, name) \
vtkSmartPointer<type> name = vtkSmartPointer<type>::New()
vtkStandardNewMacro(vtkTreeRingToPolyData);
vtkTreeRingToPolyData::vtkTreeRingToPolyData()
{
this->SetSectorsArrayName("sectors");
this->ShrinkPercentage = 0.0;
}
vtkTreeRingToPolyData::~vtkTreeRingToPolyData()
{
}
int vtkTreeRingToPolyData::FillInputPortInformation(int vtkNotUsed(port), vtkInformation* info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkTree");
return 1;
}
int vtkTreeRingToPolyData::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 output
vtkTree *inputTree = vtkTree::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkPolyData *outputPoly = vtkPolyData::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
if( inputTree->GetNumberOfVertices() == 0 )
{
return 1;
}
// Now set the point coordinates, normals, and insert the cell
vtkDataArray* coordArray = this->GetInputArrayToProcess(0, inputTree);
if (!coordArray)
{
vtkErrorMacro("Sectors array not found.");
return 0;
}
double pt1x[3] = {0.0, 0.0, 0.0};
double pt2x[3] = {0.0, 0.0, 0.0};
double ang = 0.0;
double cos_ang = 0.0;
double sin_ang = 0.0;
vtkIdType pt1 = 0;
vtkIdType pt2 = 0;
vtkIdType rootId = inputTree->GetRoot();
VTK_CREATE(vtkCellArray, strips);
VTK_CREATE(vtkPoints, pts);
double progress = 0.0;
this->InvokeEvent(vtkCommand::ProgressEvent, &progress);
for( int i = 0; i < inputTree->GetNumberOfVertices(); i++ )
{
// Grab coords from the input
double coords[4];
if( i == rootId )
{
//don't draw the root node...
coords[0] = 0.0;
coords[1] = 0.0;
coords[2] = 1.0;
coords[3] = 1.0;
}
else
{
coordArray->GetTuple(i,coords);
}
double radial_length = coords[3] - coords[2];
// Calculate the amount of change in the arcs based on the shrink
// percentage of the arc_length
double conversion = vtkMath::Pi()/180.;
double arc_length = (conversion*(coords[1] - coords[0])*coords[3]);
double radial_shrink = radial_length*this->ShrinkPercentage;
double arc_length_shrink;
if( radial_shrink > 0.25*arc_length )
{
arc_length_shrink = 0.25*arc_length;
}
else
{
arc_length_shrink = radial_shrink;
}
double arc_length_new = arc_length - arc_length_shrink;
double angle_change = ((arc_length_new/coords[3])/conversion);
double delta_change_each = 0.5*((coords[1]-coords[0]) - angle_change);
double inner_radius = coords[2] + (0.5*(radial_length*this->ShrinkPercentage));
double outer_radius = coords[3] - (0.5*(radial_length*this->ShrinkPercentage));
double start_angle;
double end_angle;
if( coords[1] - coords[0] == 360. )
{
start_angle = coords[0];
end_angle = coords[1];
}
else
{
start_angle = coords[0] + delta_change_each;
end_angle = coords[1] - delta_change_each;
}
int num_angles = static_cast<int>(end_angle - start_angle);
if ( num_angles < 1 )
{
num_angles = 1;
}
int num_points = 2*num_angles + 2;
strips->InsertNextCell(num_points);
for ( int j = 0; j < num_angles; ++j )
{
ang = start_angle + j;
cos_ang = cos(vtkMath::RadiansFromDegrees(ang));
sin_ang = sin(vtkMath::RadiansFromDegrees(ang));
pt1x[0] = cos_ang*inner_radius;
pt1x[1] = sin_ang*inner_radius;
pt2x[0] = cos_ang*outer_radius;
pt2x[1] = sin_ang*outer_radius;
pt1 = pts->InsertNextPoint(pt1x);
pt2 = pts->InsertNextPoint(pt2x);
strips->InsertCellPoint(pt1);
strips->InsertCellPoint(pt2);
}
ang = end_angle;
cos_ang = cos(vtkMath::RadiansFromDegrees(ang));
sin_ang = sin(vtkMath::RadiansFromDegrees(ang));
pt1x[0] = cos_ang*inner_radius;
pt1x[1] = sin_ang*inner_radius;
pt2x[0] = cos_ang*outer_radius;
pt2x[1] = sin_ang*outer_radius;
pt1 = pts->InsertNextPoint(pt1x);
pt2 = pts->InsertNextPoint(pt2x);
strips->InsertCellPoint(pt1);
strips->InsertCellPoint(pt2);
if ( i%1000 == 0 )
{
progress = static_cast<double>(i) / inputTree->GetNumberOfVertices() * 0.8;
this->InvokeEvent(vtkCommand::ProgressEvent, &progress);
}
}
outputPoly->SetPoints(pts);
outputPoly->SetStrips(strips);
// Pass the input vertex data to the output cell data :)
vtkDataSetAttributes* const input_vertex_data = inputTree->GetVertexData();
vtkDataSetAttributes* const output_cell_data = outputPoly->GetCellData();
output_cell_data->PassData(input_vertex_data);
return 1;
}
void vtkTreeRingToPolyData::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "ShrinkPercentage: " << this->ShrinkPercentage << endl;
}
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