camitk.Transformation

class camitk.Transformation

Transformation represents a geometrical transformation between two FrameOfReferences

It supports linear and non-linear transforms stored in a vtkTransform (linear) or any vtkAbstractTransform (non-linear)

It has a direction (from a FrameOfReference to another FrameOfReference)

Its constructor is private as Transformation objects must only be created through TransformationManager::getTransformationManager() (although it is possible to instantiate your own TransformationManager if you know what you’re doing!)

Transformation are instantiated/stored/managed/destroyed by TransformationManager::getTransformationManager(), therefore you should not keep a pointer to any Transformation, just call TransformationManager::getTransformationOwnership(..) when you need to access it. This guarantees the coherence of the complete reference system and avoid dangling pointers and memory leaks.

{.cpp}
...
FrameOfReference* from = TransformationManager::addFrameOfReference("Source Frame");
FrameOfReference* to = TransformationManager::addFrameOfReference("Destination Frame");
Transformation* t = TransformationManager::addTransformation(from, to);
...
t->setMatrix(...);
 note: t MUST not be a member
 call TransformationManager::getTransformationOwnership(from, to) to access it later on

See also

TransformationManager

__init__(*args, **kwargs)

Methods

__init__(*args, **kwargs)
getFrom(self)	Get the FrameOfReference the Transformation starts from (origin)
getName(self)	Get the name of the Transformation
getTo(self)	Get the FrameOfReference that the Transformation goes to (destination)
getTransform(self)	Get the internal vtkTransform (linear transformation) or a nullptr