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
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/*=========================================================================
Program: Visualization Toolkit
Module: TestProjectedTetrahedra.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 2004 Sandia Corporation.
* Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
* license for use of this work by or on behalf of the
* U.S. Government. Redistribution and use in source and binary forms, with
* or without modification, are permitted provided that this Notice and any
* statement of authorship are reproduced on all copies.
*/
#include "vtkProjectedTetrahedraMapper.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkStructuredPointsReader.h"
#include "vtkSLCReader.h"
#include "vtkStructuredPoints.h"
#include "vtkUnstructuredGrid.h"
#include "vtkThreshold.h"
#include "vtkDataSetTriangleFilter.h"
#include "vtkPiecewiseFunction.h"
#include "vtkColorTransferFunction.h"
#include "vtkVolumeProperty.h"
#include "vtkVolume.h"
#include "vtkContourFilter.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkCamera.h"
#include "vtkRegressionTestImage.h"
#include "vtkStdString.h"
int TestProjectedTetrahedra(int argc, char *argv[])
{
int i;
// Need to get the data root.
const char *data_root = NULL;
for (i = 0; i < argc-1; i++)
{
if (strcmp("-D", argv[i]) == 0)
{
data_root = argv[i+1];
break;
}
}
if (!data_root)
{
cout << "Need to specify the directory to VTK_DATA_ROOT with -D <dir>." << endl;
return 1;
}
// Create the standard renderer, render window, and interactor.
vtkRenderWindow *renWin = vtkRenderWindow::New();
vtkRenderer *ren1 = vtkRenderer::New();
renWin->AddRenderer(ren1);
ren1->Delete();
vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
iren->SetRenderWindow(renWin);
iren->SetDesiredUpdateRate(3);
renWin->Delete();
// check for driver support
renWin->Render();
vtkProjectedTetrahedraMapper *volumeMapper
= vtkProjectedTetrahedraMapper::New();
if (!volumeMapper->IsSupported(renWin))
{
volumeMapper->Delete();
iren->Delete();
vtkGenericWarningMacro("Projected tetrahedra is not supported. Skipping tests.");
return 0;
}
// Create the reader for the data.
// This is the data that will be volume rendered.
vtkStdString filename;
filename = data_root;
filename += "/Data/ironProt.vtk";
cout << "Loading " << filename.c_str() << endl;
vtkStructuredPointsReader *reader = vtkStructuredPointsReader::New();
reader->SetFileName(filename.c_str());
// Create a reader for the other data that will be contoured and
// displayed as a polygonal mesh.
filename = data_root;
filename += "/Data/neghip.slc";
cout << "Loading " << filename.c_str() << endl;
vtkSLCReader *reader2 = vtkSLCReader::New();
reader2->SetFileName(filename.c_str());
// Convert from vtkImageData to vtkUnstructuredGrid.
// Remove any cells where all values are below 80.
vtkThreshold *thresh = vtkThreshold::New();
thresh->ThresholdByUpper(80);
thresh->AllScalarsOff();
thresh->SetInputConnection(reader->GetOutputPort());
// Make sure we have only tetrahedra.
vtkDataSetTriangleFilter *trifilter = vtkDataSetTriangleFilter::New();
trifilter->SetInputConnection(thresh->GetOutputPort());
// Create transfer mapping scalar value to opacity.
vtkPiecewiseFunction *opacityTransferFunction = vtkPiecewiseFunction::New();
opacityTransferFunction->AddPoint(80.0, 0.0);
opacityTransferFunction->AddPoint(120.0, 0.2);
opacityTransferFunction->AddPoint(255.0, 0.2);
// Create transfer mapping scalar value to color.
vtkColorTransferFunction *colorTransferFunction
= vtkColorTransferFunction::New();
colorTransferFunction->AddRGBPoint(80.0, 0.0, 0.0, 0.0);
colorTransferFunction->AddRGBPoint(120.0, 0.0, 0.0, 1.0);
colorTransferFunction->AddRGBPoint(160.0, 1.0, 0.0, 0.0);
colorTransferFunction->AddRGBPoint(200.0, 0.0, 1.0, 0.0);
colorTransferFunction->AddRGBPoint(255.0, 0.0, 1.0, 1.0);
// The property describes how the data will look.
vtkVolumeProperty *volumeProperty = vtkVolumeProperty::New();
volumeProperty->SetColor(colorTransferFunction);
volumeProperty->SetScalarOpacity(opacityTransferFunction);
volumeProperty->ShadeOff();
volumeProperty->SetInterpolationTypeToLinear();
// The mapper that renders the volume data.
volumeMapper->SetInputConnection(trifilter->GetOutputPort());
// The volume holds the mapper and the property and can be used to
// position/orient the volume.
vtkVolume *volume = vtkVolume::New();
volume->SetMapper(volumeMapper);
volume->SetProperty(volumeProperty);
// Contour the second dataset.
vtkContourFilter *contour = vtkContourFilter::New();
contour->SetValue(0, 80);
contour->SetInputConnection(reader2->GetOutputPort());
// Create a mapper for the polygonal data.
vtkPolyDataMapper *mapper = vtkPolyDataMapper::New();
mapper->SetInputConnection(contour->GetOutputPort());
mapper->ScalarVisibilityOff();
// Create an actor for the polygonal data.
vtkActor *actor = vtkActor::New();
actor->SetMapper(mapper);
ren1->AddViewProp(actor);
ren1->AddVolume(volume);
renWin->SetSize(300, 300);
ren1->ResetCamera();
ren1->GetActiveCamera()->Azimuth(20.0);
ren1->GetActiveCamera()->Elevation(10.0);
ren1->GetActiveCamera()->Zoom(1.5);
renWin->Render();
int retVal = vtkTesting::Test(argc, argv, renWin, 75);
if (retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
// Clean up.
iren->Delete();
reader->Delete();
reader2->Delete();
thresh->Delete();
trifilter->Delete();
opacityTransferFunction->Delete();
colorTransferFunction->Delete();
volumeProperty->Delete();
volumeMapper->Delete();
volume->Delete();
contour->Delete();
mapper->Delete();
actor->Delete();
if ((retVal == vtkTesting::PASSED) || (retVal == vtkTesting::DO_INTERACTOR))
{
return 0;
}
else
{
return 1;
}
}
|
