DGtal 1.3.0
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viewer3D-8-2DSliceImages.cpp
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1
37#include <iostream>
38#include "DGtal/base/Common.h"
39#include "DGtal/io/readers/VolReader.h"
40#include "DGtal/images/ImageHelper.h"
41#include "ConfigExamples.h"
42#include "DGtal/io/viewers/Viewer3D.h"
43
45#include "DGtal/io/DrawWithDisplay3DModifier.h"
46#include "DGtal/io/viewers/DrawWithViewer3DModifier.h"
47#include "DGtal/io/colormaps/HueShadeColorMap.h"
48#include "DGtal/io/Color.h"
50
52
53using namespace std;
54using namespace DGtal;
55
57struct hueFct{
58 inline
59 unsigned int operator() (unsigned char aVal) const
60 {
61 HueShadeColorMap<unsigned char> hueShade(0,255);
62 Color col = hueShade((unsigned char)aVal);
63 return (((unsigned int) col.red()) << 16)| (((unsigned int) col.green()) << 8)|((unsigned int) col.blue());
64 }
65};
68
69int main( int argc, char** argv )
70{
71
73 QApplication application(argc,argv);
74 typedef Viewer3D<> MyViewer;
75 MyViewer viewer;
76 viewer.show();
77 std::string inputFilename = examplesPath + "samples/lobster.vol";
78 Image3D imageVol = VolReader<Image3D>::importVol(inputFilename);
79
80
82 // Extracting the 2D images from the 3D one and from a given dimension.
83 // First image the teenth Z slice (dim=2)
85 Image3D::Value, DGtal::functors::Identity > MySliceImageAdapter;
86
87 // Define the functor to recover a 2D domain from the 3D one in the Z direction (2):
88 DGtal::functors::Projector<DGtal::Z2i::Space> transTo2DdomainFunctorZ; transTo2DdomainFunctorZ.initRemoveOneDim(2);
89 DGtal::Z2i::Domain domain2DZ(transTo2DdomainFunctorZ(imageVol.domain().lowerBound()),
90 transTo2DdomainFunctorZ(imageVol.domain().upperBound()));
91
92 // Define the functor to associate 2D coordinates to the 3D one by giving the direction Z (2) and the slide numnber (10):
93 DGtal::functors::Projector<DGtal::Z3i::Space> aSliceFunctorZ(10); aSliceFunctorZ.initAddOneDim(2);
94
95 // We can now obtain the slice image (a ConstImageAdapter):
96 const auto identityFunctor = DGtal::functors::Identity();
97 MySliceImageAdapter aSliceImageZ(imageVol, domain2DZ, aSliceFunctorZ, identityFunctor );
98
99 // Second image the fiftieth Y slice (dim=1)
100 // Define the functor to recover a 2D domain from the 3D one in the Y direction (1):
101 DGtal::functors::Projector<DGtal::Z2i::Space> transTo2DdomainFunctorY; transTo2DdomainFunctorY.initRemoveOneDim(1);
102 DGtal::Z2i::Domain domain2DY(transTo2DdomainFunctorY(imageVol.domain().lowerBound()),
103 transTo2DdomainFunctorY(imageVol.domain().upperBound()));
104
105 // Define the functor to associate 2D coordinates to the 3D one by giving the direction Y (1) and the slide numnber (50):
106 DGtal::functors::Projector<DGtal::Z3i::Space> aSliceFunctorY(50); aSliceFunctorY.initAddOneDim(1);
107
108 // We can now obtain the slice image (a ConstImageAdapter):
109 MySliceImageAdapter aSliceImageY(imageVol, domain2DY, aSliceFunctorY, identityFunctor );
111
113 viewer << SetMode3D(aSliceImageZ.className(), "BoundingBox");
114 viewer << MyViewer::updateDisplay;
116
118 viewer << aSliceImageZ;
119 viewer << aSliceImageY;
121
122 viewer << SetMode3D(aSliceImageZ.className(), "");
124 viewer << AddTextureImage2DWithFunctor<MySliceImageAdapter, hueFct, Z3i::Space, Z3i::KSpace> (aSliceImageZ, hueFct(), Viewer3D<Z3i::Space, Z3i::KSpace>::RGBMode);
125 viewer << AddTextureImage2DWithFunctor<MySliceImageAdapter, hueFct, Z3i::Space, Z3i::KSpace> (aSliceImageY, hueFct(), Viewer3D<Z3i::Space, Z3i::KSpace>::RGBMode);
127
128
130 viewer << DGtal::UpdateImagePosition<Z3i::Space, Z3i::KSpace>(1, MyViewer::yDirection, 0.0, 50.0, 0.0);
131 viewer << DGtal::UpdateImageData<MySliceImageAdapter>(0, aSliceImageZ, 0, 0, 10);
132 viewer << MyViewer::updateDisplay;
134
135
137 viewer << DGtal::UpdateImagePosition<Z3i::Space, Z3i::KSpace>(3, MyViewer::yDirection, 500.0, 50.0, 0.0);
138 viewer << DGtal::UpdateImageData<MySliceImageAdapter, hueFct>(2, aSliceImageZ, 500, 0, 10, 0.0, MyViewer::zDirection, hueFct());
139 viewer << MyViewer::updateDisplay;
141
142return application.exec();
143
144}
145// //
Structure representing an RGB triple with alpha component.
Definition: Color.h:68
void green(const unsigned char aGreenValue)
void red(const unsigned char aRedValue)
void blue(const unsigned char aBlueValue)
Aim: implements a const image adapter with a given domain (i.e. a subdomain) and 2 functors : g for d...
Aim: This class template may be used to (linearly) convert scalar values in a given range into a colo...
virtual void show()
Overload QWidget method in order to add a call to updateList() method (to ensure that the lists are w...
DGtal is the top-level namespace which contains all DGtal functions and types.
STL namespace.
Modifier class in a Display3D stream. Useful to choose your own mode for a given class....
static ImageContainer importVol(const std::string &filename, const Functor &aFunctor=Functor())
Aim: Define a simple default functor that just returns its argument.
Aim: Functor that maps a point P of dimension i to a point Q of dimension j. The member myDims is an ...
void initAddOneDim(const Dimension &newDim)
void initRemoveOneDim(const Dimension &dimRemoved)
int main()
Definition: testBits.cpp:56