Leginon

h1. Transform Manager 

The Transform Manager handles all shift corrections that need to be done after drift is

declared. The class will be expand to do transformation other than shift in the future.

By the request of an Acquisition Node, the transform manager reaquires ancestors of the

target that requires transformation in order to create the transformed target.

<highlights>

Any acquisition or focuser node that need target correction requires two

bindings.

<simplelist type="vert">

<member> AcquisitionNode or FocuserNode - (TransformTargetEvent) ->

TransformManagerNode</member>

<member> TransformManagerNode-(TransformTargetDoneEvent) -> AcquisitionNode or

FocuserNode</member>

</simplelist>

For TransformManager to change presets, two bindings are needed:

<simplelist type="vert">

<member> TransformManagerNode - (ChangePresetEvent) -> PresetsManagerNode</member>

<member> PresetsManagerNode -(PresetChangedEvent) -> TransformManagerNode</member>

</simplelist>

</highlights>

h2.  Settings

*  Minimal Magnification = 300. This setting sets a lower limit to the ancestor image

reacquisition.  It can be set to prevent going down to a magnification where the

objective aperture inserted after the original image was acquired prevents correlation

between the reaquired image (with aperture) and the original (without aperture).

Alternatively, it can be set to prevent the reacquisition that uses the LM mode.

h2.  Toolbar

*  Declare Drift = force the Transform Manager to start drift correction

sequence.