1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*=========================================================================
Program: Visualization Toolkit
Module: vtkHedgeHog.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 "vtkHedgeHog.h"
#include "vtkCellArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkPolyData.h"
vtkStandardNewMacro(vtkHedgeHog);
vtkHedgeHog::vtkHedgeHog()
{
this->ScaleFactor = 1.0;
this->VectorMode = VTK_USE_VECTOR;
}
int vtkHedgeHog::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
vtkDataSet *input = vtkDataSet::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkPolyData *output = vtkPolyData::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkIdType numPts;
vtkPoints *newPts;
vtkPointData *pd;
vtkDataArray *inVectors;
vtkDataArray *inNormals;
vtkIdType ptId;
int i;
vtkIdType pts[2];
vtkCellArray *newLines;
double x[3], v[3];
double newX[3];
vtkPointData *outputPD = output->GetPointData();
// Initialize
//
numPts = input->GetNumberOfPoints();
pd = input->GetPointData();
inVectors = pd->GetVectors();
if ( numPts < 1 )
{
vtkErrorMacro(<<"No input data");
return 1;
}
if ( !inVectors && this->VectorMode == VTK_USE_VECTOR)
{
vtkErrorMacro(<<"No vectors in input data");
return 1;
}
inNormals = pd->GetNormals();
if ( !inNormals && this->VectorMode == VTK_USE_NORMAL)
{
vtkErrorMacro(<<"No normals in input data");
return 1;
}
outputPD->CopyAllocate(pd, 2*numPts);
newPts = vtkPoints::New(); newPts->SetNumberOfPoints(2*numPts);
newLines = vtkCellArray::New();
newLines->Allocate(newLines->EstimateSize(numPts,2));
// Loop over all points, creating oriented line
//
for (ptId=0; ptId < numPts; ptId++)
{
if ( ! (ptId % 10000) ) //abort/progress
{
this->UpdateProgress(static_cast<double>(ptId)/numPts);
if (this->GetAbortExecute())
{
break;
}
}
input->GetPoint(ptId, x);
if (this->VectorMode == VTK_USE_VECTOR)
{
inVectors->GetTuple(ptId, v);
}
else
{
inNormals->GetTuple(ptId, v);
}
for (i=0; i<3; i++)
{
newX[i] = x[i] + this->ScaleFactor * v[i];
}
pts[0] = ptId;
pts[1] = ptId + numPts;;
newPts->SetPoint(pts[0], x);
newPts->SetPoint(pts[1], newX);
newLines->InsertNextCell(2,pts);
outputPD->CopyData(pd,ptId,pts[0]);
outputPD->CopyData(pd,ptId,pts[1]);
}
// Update ourselves and release memory
//
output->SetPoints(newPts);
newPts->Delete();
output->SetLines(newLines);
newLines->Delete();
return 1;
}
int vtkHedgeHog::FillInputPortInformation(int, vtkInformation *info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkDataSet");
return 1;
}
void vtkHedgeHog::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Scale Factor: " << this->ScaleFactor << "\n";
os << indent << "Orient Mode: " << (this->VectorMode == VTK_USE_VECTOR ?
"Orient by vector\n" : "Orient by normal\n");
}
|
