tool for rotating components
StretchTool lets the user rotate components by direct manipulation.
- StretchTool(ControlInfo* = nil)
Create a new StretchTool.
- virtual Manipulator* CreateManipulator(
- Viewer*, Event&, Transformer*
- virtual void InterpretManipulator(Manipulator*)
CreateManipulator detects whether the user clicked on a component. If
not, it clears the editor's selection and returns a nil manipulator.
If a component was hit, and if the component was not previously
selected, then CreateManipulator clears the editor's selection,
selects the component the user hit, and delegates manipulator creation
and interpretation to it. If the component was the only selected
component, it again delegates manipulator creation and interpretation
to the component, but the selection is unaltered. If the user clicks
on one of many selected components, then CreateManipulator will
delegate manipulator creation and interpretation to the hit component
without altering the selection.