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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*=========================================================================
Program: Visualization Toolkit
Module: vtkAxes.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 "vtkAxes.h"
#include "vtkCellArray.h"
#include "vtkFloatArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkPolyData.h"
vtkStandardNewMacro(vtkAxes);
//----------------------------------------------------------------------------
// Construct with origin=(0,0,0) and scale factor=1.
vtkAxes::vtkAxes()
{
this->Origin[0] = 0.0;
this->Origin[1] = 0.0;
this->Origin[2] = 0.0;
this->ScaleFactor = 1.0;
this->Symmetric = 0;
this->ComputeNormals = 1;
this->SetNumberOfInputPorts(0);
}
int vtkAxes::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()));
int numPts=6, numLines=3;
vtkPoints *newPts;
vtkCellArray *newLines;
vtkFloatArray *newScalars;
vtkFloatArray *newNormals;
double x[3], n[3];
vtkIdType ptIds[2];
vtkDebugMacro(<<"Creating x-y-z axes");
newPts = vtkPoints::New();
newPts->Allocate(numPts);
newLines = vtkCellArray::New();
newLines->Allocate(newLines->EstimateSize(numLines,2));
newScalars = vtkFloatArray::New();
newScalars->Allocate(numPts);
newScalars->SetName("Axes");
newNormals = vtkFloatArray::New();
newNormals->SetNumberOfComponents(3);
newNormals->Allocate(numPts);
newNormals->SetName("Normals");
//
// Create axes
//
x[0] = this->Origin[0];
x[1] = this->Origin[1];
x[2] = this->Origin[2];
if (this->Symmetric)
{
x[0] = this->Origin[0] - this->ScaleFactor;
}
n[0] = 0.0; n[1] = 1.0; n[2] = 0.0;
ptIds[0] = newPts->InsertNextPoint(x);
newScalars->InsertNextValue(0.0);
newNormals->InsertNextTuple(n);
x[0] = this->Origin[0] + this->ScaleFactor;
x[1] = this->Origin[1];
x[2] = this->Origin[2];
ptIds[1] = newPts->InsertNextPoint(x);
newLines->InsertNextCell(2,ptIds);
newScalars->InsertNextValue(0.0);
newNormals->InsertNextTuple(n);
x[0] = this->Origin[0];
x[1] = this->Origin[1];
x[2] = this->Origin[2];
if (this->Symmetric)
{
x[1] = this->Origin[1] - this->ScaleFactor;
}
n[0] = 0.0; n[1] = 0.0; n[2] = 1.0;
ptIds[0] = newPts->InsertNextPoint(x);
newScalars->InsertNextValue(0.25);
newNormals->InsertNextTuple(n);
x[0] = this->Origin[0];
x[1] = this->Origin[1] + this->ScaleFactor;
x[2] = this->Origin[2];
ptIds[1] = newPts->InsertNextPoint(x);
newScalars->InsertNextValue(0.25);
newNormals->InsertNextTuple(n);
newLines->InsertNextCell(2,ptIds);
x[0] = this->Origin[0];
x[1] = this->Origin[1];
x[2] = this->Origin[2];
if (this->Symmetric)
{
x[2] = this->Origin[2] - this->ScaleFactor;
}
n[0] = 1.0; n[1] = 0.0; n[2] = 0.0;
ptIds[0] = newPts->InsertNextPoint(x);
newScalars->InsertNextValue(0.5);
newNormals->InsertNextTuple(n);
x[0] = this->Origin[0];
x[1] = this->Origin[1];
x[2] = this->Origin[2] + this->ScaleFactor;
ptIds[1] = newPts->InsertNextPoint(x);
newScalars->InsertNextValue(0.5);
newNormals->InsertNextTuple(n);
newLines->InsertNextCell(2,ptIds);
//
// Update our output and release memory
//
output->SetPoints(newPts);
newPts->Delete();
output->GetPointData()->SetScalars(newScalars);
newScalars->Delete();
if (this->ComputeNormals)
{
output->GetPointData()->SetNormals(newNormals);
}
newNormals->Delete();
output->SetLines(newLines);
newLines->Delete();
return 1;
}
//----------------------------------------------------------------------------
// This source does not know how to generate pieces yet.
int vtkAxes::ComputeDivisionExtents(vtkDataObject *vtkNotUsed(output),
int idx, int numDivisions)
{
if (idx == 0 && numDivisions == 1)
{
// I will give you the whole thing
return 1;
}
else
{
// I have nothing to give you for this piece.
return 0;
}
}
//----------------------------------------------------------------------------
void vtkAxes::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Origin: (" << this->Origin[0] << ", "
<< this->Origin[1] << ", "
<< this->Origin[2] << ")\n";
os << indent << "Scale Factor: " << this->ScaleFactor << "\n";
os << indent << "Symmetric: " << this->Symmetric << "\n";
os << indent << "ComputeNormals: " << this->ComputeNormals << "\n";
}
|
