/*
* Input thread reading from device.
* Generates events on incoming data.
*/
XBMC_Event CLinuxInputDevice::ReadEvent()
{
int readlen;
struct input_event levt;
XBMC_Event devt;
while (1)
{
bzero(&levt, sizeof(levt));
bzero(&devt, sizeof(devt));
devt.type = XBMC_NOEVENT;
if(m_devicePreferredId == LI_DEVICE_NONE)
return devt;
readlen = read(m_fd, &levt, sizeof(levt));
if (readlen <= 0)
break;
//printf("read event readlen = %d device name %s m_fileName %s\n", readlen, m_deviceName, m_fileName.c_str());
// sanity check if we realy read the event
if(readlen != sizeof(levt))
{
printf("CLinuxInputDevice: read error : %s\n", strerror(errno));
break;
}
if (!TranslateEvent(levt, devt))
continue;
/* Flush previous event with DIEF_FOLLOW? */
if (devt.type != XBMC_NOEVENT)
{
//printf("new event! type = %d\n", devt.type);
//printf("key: %d %d %d %c\n", devt.key.keysym.scancode, devt.key.keysym.sym, devt.key.keysym.mod, devt.key.keysym.unicode);
if (m_hasLeds && (m_keyMods != m_lastKeyMods))
{
SetLed(LED_NUML, m_keyMods & XBMCKMOD_NUM);
SetLed(LED_CAPSL, m_keyMods & XBMCKMOD_CAPS);
m_lastKeyMods = m_keyMods;
}
break;
}
}
return devt;
}
SDLKey GetKey( bool a_bTranslate )
{
SDL_Event oSdlEvent;
SMortalEvent oEvent;
while (SDL_WaitEvent(&oSdlEvent))
{
if ( SDL_KEYDOWN == oSdlEvent.type )
{
return oSdlEvent.key.keysym.sym;
}
if ( SDL_QUIT == oSdlEvent.type )
{
g_oState.m_bQuitFlag = true;
return SDLK_ESCAPE;
}
if ( ! a_bTranslate )
{
continue;
}
// Handle gamepad and others
TranslateEvent( &oSdlEvent, &oEvent );
switch (oEvent.m_enType)
{
case Me_QUIT:
g_oState.m_bQuitFlag = true;
return SDLK_ESCAPE;
case Me_PLAYERKEYDOWN:
switch ( oEvent.m_iKey ) {
case Mk_UP: return SDLK_UP;
case Mk_DOWN: return SDLK_DOWN;
case Mk_LEFT: return SDLK_LEFT;
case Mk_RIGHT: return SDLK_RIGHT;
default: return SDLK_RETURN;
}
break;
case Me_MENU:
return SDLK_ESCAPE;
default:
break;
} // switch statement
} // Polling events
// Code will never reach this point, unless there's an error.
return SDLK_ESCAPE;
}
bool PollEvent(Event& eventOut)
{
SDL_Event theEvent;
while (SDL_PollEvent(&theEvent))
{
Event result = TranslateEvent(theEvent);
if (result != Event::None)
{
eventOut = result;
return true;
}
}
return false; // no more events to process
}
void GameProcess::Update(float dt)
{
// 执行主线历程
Execute(m_pGameProcData);
// 处理事件，执行支线进程
m_nEventID = GetEvent();
while ( m_nEventID != GameProcEvent_None )
{
if( !TranslateEvent(m_nEventID) )
{
ClearEvent();
break;
}
m_nEventID = GetEvent();
}
}
bool mitk::AffineInteractor::ExecuteAction(Action* action, mitk::StateEvent const* stateEvent)
{
bool ok = false;
TimeSlicedGeometry* inputtimegeometry = GetData()->GetTimeSlicedGeometry();
if (inputtimegeometry == NULL)
return false;
Geometry3D* geometry = inputtimegeometry->GetGeometry3D(m_TimeStep);
mitk::DisplayPositionEvent const *event = dynamic_cast <const mitk::DisplayPositionEvent *> (stateEvent->GetEvent());
switch (action->GetActionId())
{
case AcCHECKELEMENT:
{
mitk::Point3D worldPoint = event->GetWorldPosition();
/* now we have a worldpoint. check if it is inside our object and select/deselect it accordingly */
mitk::BoolProperty::Pointer selected;
mitk::ColorProperty::Pointer color;
std::auto_ptr<StateEvent> newStateEvent;
selected = dynamic_cast<mitk::BoolProperty*>(m_DataNode->GetProperty("selected"));
if ( selected.IsNull() ) {
selected = mitk::BoolProperty::New();
m_DataNode->GetPropertyList()->SetProperty("selected", selected);
}
color = dynamic_cast<mitk::ColorProperty*>(m_DataNode->GetProperty("color"));
if ( color.IsNull() ) {
color = mitk::ColorProperty::New();
m_DataNode->GetPropertyList()->SetProperty("color", color);
}
if (this->CheckSelected(worldPoint, m_TimeStep))
{
newStateEvent.reset(new mitk::StateEvent(EIDYES, stateEvent->GetEvent()));
selected->SetValue(true);
color->SetColor(1.0, 1.0, 0.0);
}
else
{
newStateEvent.reset(new mitk::StateEvent(EIDNO, stateEvent->GetEvent()));
selected = mitk::BoolProperty::New(false);
color->SetColor(0.0, 0.0, 1.0);
/*
mitk::BoundingObject* b = dynamic_cast<mitk::BoundingObject*>(m_DataNode->GetData());
if(b != NULL)
{
color = (b->GetPositive())? mitk::ColorProperty::New(0.0, 0.0, 1.0) : mitk::ColorProperty::New(1.0, 0.0, 0.0); // if deselected, a boundingobject is colored according to its positive/negative state
}
else
color = mitk::ColorProperty::New(1.0, 1.0, 1.0); // if deselcted and no bounding object, color is white
*/
}
/* write new state (selected/not selected) to the property */
this->HandleEvent( newStateEvent.get() );
ok = true;
break;
}
case AcADD:
{
mitk::Point3D worldPoint = event->GetWorldPosition();
std::auto_ptr<StateEvent> newStateEvent;
if (this->CheckSelected(worldPoint, m_TimeStep))
{
newStateEvent.reset(new mitk::StateEvent(EIDYES, event));
m_DataNode->GetPropertyList()->SetProperty("selected", mitk::BoolProperty::New(true)); // TODO: Generate an Select Operation and send it to the undo controller ?
}
else // if not selected, do nothing (don't deselect)
{
newStateEvent.reset(new mitk::StateEvent(EIDNO, event));
}
//call HandleEvent to leave the guard-state
this->HandleEvent( newStateEvent.get() );
ok = true;
break;
}
case AcTRANSLATESTART:
case AcROTATESTART:
case AcSCALESTART:
{
m_LastMousePosition = event->GetWorldPosition();
ok = true;
break;
}
case AcTRANSLATE:
{
mitk::Point3D newPosition;
newPosition = event->GetWorldPosition();
newPosition -= m_LastMousePosition.GetVectorFromOrigin(); // compute difference between actual and last mouse position
m_LastMousePosition = event->GetWorldPosition(); // save current mouse position as last position
/* create operation with position difference */
mitk::PointOperation* doOp = new mitk::PointOperation(OpMOVE, newPosition, 0); // Index is not used here
if (m_UndoEnabled) //write to UndoMechanism
{
mitk::Point3D oldPosition=geometry->GetCornerPoint(0);
PointOperation* undoOp = new mitk::PointOperation(OpMOVE, oldPosition, 0);
OperationEvent *operationEvent = new OperationEvent(geometry, doOp, undoOp);
m_UndoController->SetOperationEvent(operationEvent);
}
/* execute the Operation */
geometry->ExecuteOperation(doOp);
if (!m_UndoEnabled)
delete doOp;
ok = true;
break;
}
case AcTRANSLATEEND:
{
m_UndoController->SetOperationEvent(new UndoStackItem("Move object"));
m_DataNode->InvokeEvent(TranslateEvent());
break;
}
case AcROTATE:
{
mitk::Point3D p = event->GetWorldPosition();
mitk::Vector3D newPosition = p.GetVectorFromOrigin();
mitk::Point3D dataPosition = geometry->GetCenter();
newPosition = newPosition - dataPosition.GetVectorFromOrigin(); // calculate vector from center of the data object to the current mouse position
mitk::Vector3D startPosition = m_LastMousePosition.GetVectorFromOrigin() - dataPosition.GetVectorFromOrigin(); // calculate vector from center of the data object to the last mouse position
/* calculate rotation axis (by calculating the cross produkt of the vectors) */
mitk::Vector3D rotationaxis;
rotationaxis[0] = startPosition[1] * newPosition[2] - startPosition[2] * newPosition[1];
rotationaxis[1] = startPosition[2] * newPosition[0] - startPosition[0] * newPosition[2];
rotationaxis[2] = startPosition[0] * newPosition[1] - startPosition[1] * newPosition[0];
/* calculate rotation angle in degrees */
mitk::ScalarType angle = atan2((mitk::ScalarType)rotationaxis.GetNorm(), (mitk::ScalarType) (newPosition * startPosition)) * (180/vnl_math::pi);
m_LastMousePosition = p; // save current mouse position as last mouse position
/* create operation with center of rotation, angle and axis and send it to the geometry and Undo controller */
mitk::RotationOperation* doOp = new mitk::RotationOperation(OpROTATE, dataPosition, rotationaxis, angle);
if (m_UndoEnabled) //write to UndoMechanism
{
RotationOperation* undoOp = new mitk::RotationOperation(OpROTATE, dataPosition, rotationaxis, -angle);
OperationEvent *operationEvent = new OperationEvent(geometry, doOp, undoOp);
m_UndoController->SetOperationEvent(operationEvent);
}
/* execute the Operation */
geometry->ExecuteOperation(doOp);
if(!m_UndoEnabled)
delete doOp;
ok = true;
break;
}
case AcROTATEEND:
{
m_UndoController->SetOperationEvent(new UndoStackItem("Rotate object"));
m_DataNode->InvokeEvent(RotateEvent());
break;
}
case AcSCALE:
{
mitk::Point3D p = event->GetWorldPosition();
mitk::Vector3D v = p - m_LastMousePosition;
/* calculate scale changes */
mitk::Point3D newScale;
newScale[0] = (geometry->GetAxisVector(0) * v) / geometry->GetExtentInMM(0); // Scalarprodukt of normalized Axis
newScale[1] = (geometry->GetAxisVector(1) * v) / geometry->GetExtentInMM(1); // and direction vector of mouse movement
newScale[2] = (geometry->GetAxisVector(2) * v) / geometry->GetExtentInMM(2); // is the length of the movement vectors
// projection onto the axis
/* convert movement to local object coordinate system and mirror it to the positive quadrant */
Vector3D start;
Vector3D end;
mitk::ScalarType convert[3];
itk2vtk(m_LastMousePosition, convert);
geometry->GetVtkTransform()->GetInverse()->TransformPoint(convert, convert); // transform start point to local object coordinates
start[0] = fabs(convert[0]); start[1] = fabs(convert[1]); start[2] = fabs(convert[2]); // mirror it to the positive quadrant
itk2vtk(p, convert);
geometry->GetVtkTransform()->GetInverse()->TransformPoint(convert, convert); // transform end point to local object coordinates
end[0] = fabs(convert[0]); end[1] = fabs(convert[1]); end[2] = fabs(convert[2]); // mirror it to the positive quadrant
/* check if mouse movement is towards or away from the objects axes and adjust scale factors accordingly */
Vector3D vLocal = start - end;
newScale[0] = (vLocal[0] > 0.0) ? -fabs(newScale[0]) : +fabs(newScale[0]);
newScale[1] = (vLocal[1] > 0.0) ? -fabs(newScale[1]) : +fabs(newScale[1]);
newScale[2] = (vLocal[2] > 0.0) ? -fabs(newScale[2]) : +fabs(newScale[2]);
m_LastMousePosition = p; // update lastPosition for next mouse move
/* generate Operation and send it to the receiving geometry */
PointOperation* doOp = new mitk::PointOperation(OpSCALE, newScale, 0); // Index is not used here
if (m_UndoEnabled) //write to UndoMechanism
{
mitk::Point3D oldScaleData;
oldScaleData[0] = -newScale[0];
oldScaleData[1] = -newScale[1];
oldScaleData[2] = -newScale[2];
PointOperation* undoOp = new mitk::PointOperation(OpSCALE, oldScaleData, 0);
OperationEvent *operationEvent = new OperationEvent(geometry, doOp, undoOp);
m_UndoController->SetOperationEvent(operationEvent);
}
/* execute the Operation */
geometry->ExecuteOperation(doOp);
if(!m_UndoEnabled)
delete doOp;
/* Update Volume Property with new value */
/*
mitk::BoundingObject* b = dynamic_cast<mitk::BoundingObject*>(m_DataNode->GetData());
if (b != NULL)
{
m_DataNode->GetPropertyList()->SetProperty("volume", FloatProperty::New(b->GetVolume()));
//MITK_INFO << "Volume of Boundingobject is " << b->GetVolume()/1000.0 << " ml" << std::endl;
}
*/
ok = true;
break;
}
case AcSCALEEND:
{
m_UndoController->SetOperationEvent(new UndoStackItem("Scale object"));
m_DataNode->InvokeEvent(ScaleEvent());
break;
}
default:
ok = Superclass::ExecuteAction(action, stateEvent);//, objectEventId, groupEventId);
}
mitk::RenderingManager::GetInstance()->RequestUpdateAll();
return ok;
}
/*
* Input thread reading from device.
* Generates events on incoming data.
*/
XBMC_Event CLinuxInputDevice::ReadEvent()
{
int readlen;
struct input_event levt;
XBMC_Event devt;
if (m_equeue.empty())
{
while (1)
{
bzero(&levt, sizeof(levt));
bzero(&devt, sizeof(devt));
devt.type = XBMC_NOEVENT;
if(m_devicePreferredId == LI_DEVICE_NONE)
return devt;
readlen = read(m_fd, &levt, sizeof(levt));
if (readlen <= 0)
{
if (errno == ENODEV)
{
CLog::Log(LOGINFO,"input device was unplugged %s",m_deviceName);
m_bUnplugged = true;
}
break;
}
//printf("read event readlen = %d device name %s m_fileName %s\n", readlen, m_deviceName, m_fileName.c_str());
// sanity check if we really read the event
if(readlen != sizeof(levt))
{
CLog::Log(LOGERROR,"CLinuxInputDevice: read error : %s\n", strerror(errno));
break;
}
if (!TranslateEvent(levt, devt))
continue;
/* Flush previous event with DIEF_FOLLOW? */
if (devt.type != XBMC_NOEVENT)
{
//printf("new event! type = %d\n", devt.type);
//printf("key: %d %d %d %c\n", devt.key.keysym.scancode, devt.key.keysym.sym, devt.key.keysym.mod, devt.key.keysym.unicode);
if (m_hasLeds && (m_keyMods != m_lastKeyMods))
{
SetLed(LED_NUML, m_keyMods & XBMCKMOD_NUM);
SetLed(LED_CAPSL, m_keyMods & XBMCKMOD_CAPS);
m_lastKeyMods = m_keyMods;
}
break;
}
}
}
else
{
devt = m_equeue.front();
m_equeue.pop_front();
}
return devt;
}