crosshair is not always rendered on top

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User kolbch has pushed new remote branch:

bug-18820-setCrosshairAsOverlayRenderer

Actual behavior

Crosshair is not rendered on top in some cases.

Expected behavior

Crosshair should always be visible

Cause of the bug

Lines are rendered in 3D space

Proposed solution

Use Actor2D and PolyDataMapper2D instead, so RenderOverlay is used to draw the crosshair.

Affected classes

mitk::PlaneGeometryDataMapper2D

How will the bugfix get tested?

Render unstructuredGrid or fiberbundle and see if the crosshair is always visible without being overdrawn.

[ef7193]: Merge branch 'bug-18820-setCrosshairAsOverlayRenderer'

Merged commits:

2015-03-06 14:25:27 Christoph Kolb [7b4bb9]
set crosshair as actor2D