CustusX  15.3.4-beta
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cxTrackPadWidget.cpp
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32 #include "cxTrackPadWidget.h"
33 
34 #include <QVBoxLayout>
35 #include <QScrollBar>
36 #include <QTouchEvent>
37 
38 #include <QAction>
39 #include <QRadialGradient>
40 #include "vtkRenderer.h"
41 #include "vtkCamera.h"
42 #include "vtkSmartPointer.h"
43 #include "cxDataInterface.h"
44 #include "cxCameraControl.h"
45 #include "cxBoundingBox3D.h"
46 #include "cxView.h"
47 #include "cxViewService.h"
48 
49 //TODO: remove
50 #include "cxLegacySingletons.h"
51 
52 namespace cx
53 {
54 
58 
59 TrackPadWidget::TrackPadWidget(QWidget* parent) :
60  BaseWidget(parent, "TrackPadWidget", "Camera Control")
61 {
62  mCameraControl = viewService()->getCameraControl();
63 
64  mMinPadSize = QSize(50,50);
65  mMinBarSize = QSize(20,50);
66 
67  mTopLayout = new QVBoxLayout(this);
68 
69  this->createStandard3DViewActions();
70  this->definePanLayout();
71  this->defineRotateLayout();
72 }
73 
74 QString TrackPadWidget::defaultWhatsThis() const
75 {
76  return "<html>"
77  "<h3>Trackpad for touch screen devices</h3>"
78  "<p>Helps the user control the camera on a touch screen.</p>"
79  "<p><i></i></p>"
80  "</html>";
81 }
82 
83 void TrackPadWidget::createStandard3DViewActions()
84 {
85  QActionGroup* group = mCameraControl->createStandard3DViewActions();
86 
87  QToolBar* toolBar = new QToolBar(this);
88  mTopLayout->addWidget(toolBar);
89  toolBar->addActions(group->actions());
90  toolBar->addSeparator();
91 }
92 
93 void TrackPadWidget::defineRotateLayout()
94 {
95  QGroupBox* group = new QGroupBox("rotate", this);
96  group->setFlat(true);
97  mTopLayout->addWidget(group);
98 
99  QHBoxLayout* layout = new QHBoxLayout;
100  layout->setMargin(4);
101  group->setLayout(layout);
102 
103  MousePadWidget* rotateWidget = new MousePadWidget(this, mMinPadSize);
104  connect(rotateWidget, SIGNAL(mouseMoved(QPointF)), this, SLOT(rotateXZSlot(QPointF)));
105  layout->addWidget(rotateWidget, 4);
106 
107  MousePadWidget* rotateYWidget = new MousePadWidget(this, mMinBarSize);
108  rotateYWidget->setFixedXPos(true);
109  connect(rotateYWidget, SIGNAL(mouseMoved(QPointF)), this, SLOT(rotateYSlot(QPointF)));
110  layout->addWidget(rotateYWidget, 1);
111 }
112 
113 
114 void TrackPadWidget::definePanLayout()
115 {
116  QGroupBox* group = new QGroupBox("pan", this);
117  group->setFlat(true);
118  mTopLayout->addWidget(group);
119 
120  QHBoxLayout* panLayout = new QHBoxLayout;
121  panLayout->setMargin(4);
122  group->setLayout(panLayout);
123 
124  MousePadWidget* panWidget = new MousePadWidget(this, mMinPadSize);
125  connect(panWidget, SIGNAL(mouseMoved(QPointF)), this, SLOT(panXZSlot(QPointF)));
126  panLayout->addWidget(panWidget, 4);
127 
128  MousePadWidget* dollyWidget = new MousePadWidget(this, mMinBarSize);
129  dollyWidget->setFixedXPos(true);
130  connect(dollyWidget, SIGNAL(mouseMoved(QPointF)), this, SLOT(dollySlot(QPointF)));
131  panLayout->addWidget(dollyWidget, 1);
132 }
133 
134 vtkCameraPtr TrackPadWidget::getCamera() const
135 {
136  return viewService()->get3DView()->getRenderer()->GetActiveCamera();
137 }
138 
139 void TrackPadWidget::rotateYSlot(QPointF delta)
140 {
141  double scale = 180;
142  double factor = scale * delta.y();
143 
144  this->getCamera()->Roll(factor);
145 }
146 
147 void TrackPadWidget::rotateXZSlot(QPointF delta)
148 {
149  vtkCameraPtr camera = this->getCamera();
150  double scale = 180;
151 
152  camera->Azimuth(-scale * delta.x());
153  camera->Elevation(scale * delta.y());
154  camera->OrthogonalizeViewUp(); // needed when using azimuth, according to docs (failure to do this causes strange zooming effects)
155 }
156 
157 void TrackPadWidget::dollySlot(QPointF delta)
158 {
159  double factor = 1 + delta.y();
160  this->getCamera()->Dolly(factor);
161  viewService()->get3DView()->getRenderer()->ResetCameraClippingRange();
162 }
163 
164 void TrackPadWidget::panXZSlot(QPointF delta)
165 {
166  vtkCameraPtr camera = this->getCamera();
167  Vector3D position(camera->GetPosition());
168  Vector3D focus(camera->GetFocalPoint());
169  Vector3D vup(camera->GetViewUp());
170 
171  Vector3D e_x = cross(focus-position, vup).normal();
172  Vector3D e_y = vup.normal();
173 
174  DoubleBoundingBox3D bb(viewService()->get3DView()->getRenderer()->ComputeVisiblePropBounds());
175 
176  double volSize = bb.range().length() / pow(3, 1.0/3.0); // mm size of volume
177  double scale = volSize;
178  Vector3D t = scale * (-delta.x() * e_x + delta.y() * e_y);
179 
180  position += t;
181  focus += t;
182 
183  camera->SetPosition(position.begin());
184  camera->SetFocalPoint(focus.begin());
185 }
186 
187 TrackPadWidget::~TrackPadWidget()
188 {
189 }
190 
191 void TrackPadWidget::showEvent(QShowEvent* event)
192 {
193  QWidget::showEvent(event);
194 }
195 
196 void TrackPadWidget::hideEvent(QCloseEvent* event)
197 {
198  QWidget::closeEvent(event);
199 }
200 
201 
202 }//end namespace cx
cx::TrackPadWidget::TrackPadWidget
TrackPadWidget(QWidget *parent)
Definition: cxTrackPadWidget.cpp:59
cx::TrackPadWidget::rotateYSlot
void rotateYSlot(QPointF delta)
Definition: cxTrackPadWidget.cpp:139
cx::TrackPadWidget::rotateXZSlot
void rotateXZSlot(QPointF delta)
Definition: cxTrackPadWidget.cpp:147
cx::cross
Vector3D cross(const Vector3D &a, const Vector3D &b)
compute cross product of a and b.
Definition: cxVector3D.cpp:62
cx::DoubleBoundingBox3D
Representation of a floating-point bounding box in 3D. The data are stored as {xmin,xmax,ymin,ymax,zmin,zmax}, in order to simplify communication with vtk.
Definition: cxBoundingBox3D.h:84
cx::TrackPadWidget::panXZSlot
void panXZSlot(QPointF delta)
Definition: cxTrackPadWidget.cpp:164
cx::TrackPadWidget::showEvent
virtual void showEvent(QShowEvent *event)
updates internal info before showing the widget
Definition: cxTrackPadWidget.cpp:191
cx::TrackPadWidget::defaultWhatsThis
virtual QString defaultWhatsThis() const
Returns a short description of what this widget will do for you.
Definition: cxTrackPadWidget.cpp:74
cx::Vector3D
Eigen::Vector3d Vector3D
Vector3D is a representation of a point or vector in 3D.
Definition: cxVector3D.h:63
cx::BaseWidget
Interface for QWidget which handles widgets uniformly for the system.
Definition: cxBaseWidget.h:108
cx::viewService
cxLogicManager_EXPORT ViewServicePtr viewService()
Definition: cxLogicManager.cpp:79
cx::TrackPadWidget::dollySlot
void dollySlot(QPointF delta)
Definition: cxTrackPadWidget.cpp:157
vtkCameraPtr
vtkSmartPointer< class vtkCamera > vtkCameraPtr
Definition: vtkForwardDeclarations.h:59
cx::TrackPadWidget::hideEvent
virtual void hideEvent(QCloseEvent *event)
disconnects stuff
Definition: cxTrackPadWidget.cpp:196