bool mitk::DisplayGeometry::SetOriginInMM(const Vector2D& origin_mm)
{
m_OriginInMM = origin_mm;
WorldToDisplay(m_OriginInMM, m_OriginInDisplayUnits);
Modified();
return !this->RefitVisibleRect();
}
void mitk::DisplayGeometry::SetSizeInDisplayUnits(unsigned int width, unsigned int height, bool keepDisplayedRegion)
{
Vector2D oldSizeInMM( m_SizeInMM );
Point2D oldCenterInMM;
if(keepDisplayedRegion)
{
Point2D centerInDisplayUnits;
centerInDisplayUnits[0] = m_SizeInDisplayUnits[0]*0.5;
centerInDisplayUnits[1] = m_SizeInDisplayUnits[1]*0.5;
DisplayToWorld(centerInDisplayUnits, oldCenterInMM);
}
m_SizeInDisplayUnits[0]=width;
m_SizeInDisplayUnits[1]=height;
if(m_SizeInDisplayUnits[0] <= 0)
m_SizeInDisplayUnits[0] = 1;
if(m_SizeInDisplayUnits[1] <= 0)
m_SizeInDisplayUnits[1] = 1;
DisplayToWorld(m_SizeInDisplayUnits, m_SizeInMM);
if(keepDisplayedRegion)
{
Point2D positionOfOldCenterInCurrentDisplayUnits;
WorldToDisplay(oldCenterInMM, positionOfOldCenterInCurrentDisplayUnits);
Point2D currentNewCenterInDisplayUnits;
currentNewCenterInDisplayUnits[0] = m_SizeInDisplayUnits[0]*0.5;
currentNewCenterInDisplayUnits[1] = m_SizeInDisplayUnits[1]*0.5;
Vector2D shift;
shift=positionOfOldCenterInCurrentDisplayUnits.GetVectorFromOrigin()-currentNewCenterInDisplayUnits;
MoveBy(shift);
Zoom(m_SizeInMM.GetNorm()/oldSizeInMM.GetNorm(), currentNewCenterInDisplayUnits);
}
Modified();
}
bool mitk::GizmoInteractor::HasPickedHandle(const InteractionEvent* interactionEvent)
{
auto positionEvent = dynamic_cast<const InteractionPositionEvent*>(interactionEvent);
if(positionEvent == NULL)
{
return false;
}
DataNode::Pointer gizmoNode = this->GetDataNode();
if (m_Gizmo.IsNull())
{
return false;
}
if (m_ManipulatedObjectGeometry.IsNull())
{
return false;
}
if (interactionEvent->GetSender()->GetRenderWindow()->GetNeverRendered())
{
return false;
}
if (interactionEvent->GetSender()->GetMapperID() == BaseRenderer::Standard2D)
{
m_PickedHandle = PickFrom2D(positionEvent);
}
else
{
m_PickedHandle = PickFrom3D(positionEvent);
}
if (m_PickedHandle != Gizmo::NoHandle)
{
// if something relevant was picked, we calculate a number of
// important points and axes for the upcoming geometry manipulations
// note initial state
m_InitialClickPosition2D = positionEvent->GetPointerPositionOnScreen();
m_InitialClickPosition3D = positionEvent->GetPositionInWorld();
auto renderer = positionEvent->GetSender()->GetVtkRenderer();
renderer->SetWorldPoint(m_InitialClickPosition3D[0],
m_InitialClickPosition3D[1],
m_InitialClickPosition3D[2],
0);
renderer->WorldToDisplay();
m_InitialClickPosition2DZ = renderer->GetDisplayPoint()[2];
m_InitialGizmoCenter3D = m_Gizmo->GetCenter();
positionEvent->GetSender()->WorldToDisplay( m_InitialGizmoCenter3D, m_InitialGizmoCenter2D );
m_InitialManipulatedObjectGeometry = m_ManipulatedObjectGeometry->Clone();
switch (m_PickedHandle)
{
case Gizmo::MoveAlongAxisX:
case Gizmo::RotateAroundAxisX:
case Gizmo::ScaleX:
m_AxisOfMovement = m_InitialManipulatedObjectGeometry->GetAxisVector(0);
break;
case Gizmo::MoveAlongAxisY:
case Gizmo::RotateAroundAxisY:
case Gizmo::ScaleY:
m_AxisOfMovement = m_InitialManipulatedObjectGeometry->GetAxisVector(1);
break;
case Gizmo::MoveAlongAxisZ:
case Gizmo::RotateAroundAxisZ:
case Gizmo::ScaleZ:
m_AxisOfMovement = m_InitialManipulatedObjectGeometry->GetAxisVector(2);
break;
default:
break;
}
m_AxisOfMovement.Normalize();
m_AxisOfRotation = m_AxisOfMovement;
// for translation: test whether the user clicked into the "object's real" axis direction
// or into the other one
Vector3D intendedAxis = m_InitialClickPosition3D - m_InitialGizmoCenter3D;
if ( intendedAxis * m_AxisOfMovement < 0 )
{
m_AxisOfMovement *= -1.0;
}
// for rotation: test whether the axis of rotation is more looking in the direction
// of the camera or in the opposite
vtkCamera* camera = renderer->GetActiveCamera();
vtkVector3d cameraDirection( camera->GetDirectionOfProjection() );
double angle_rad = vtkMath::AngleBetweenVectors( cameraDirection.GetData(),
m_AxisOfRotation.GetDataPointer() );
if ( angle_rad < vtkMath::Pi() / 2.0 )
{
m_AxisOfRotation *= -1.0;
}
return true;
}
else
{
return false;
}
}
void mitk::DisplayGeometry::MMToULDisplay(const Vector2D &vec_mm, Vector2D &vec_ULdisplay) const
{
WorldToDisplay(vec_mm, vec_ULdisplay);
DisplayToULDisplay(vec_ULdisplay, vec_ULdisplay);
}
void mitk::DisplayGeometry::MMToULDisplay(const Point2D &pt_mm, Point2D &pt_ULdisplay) const
{
WorldToDisplay(pt_mm, pt_ULdisplay);
DisplayToULDisplay(pt_ULdisplay, pt_ULdisplay);
}
