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Presentation Transforms
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Presentation Transforms

The IComponent2::PresentationTransform property changes the displayed portion of assembly components without affecting the position of the underlying model geometry. This API:

  • Gets or sets the component transform for graphical display.

  • Ignores all mate and in-context relationships. Only the display of the component on the screen is affected.

  • Does not apply the transform to component geometry.

  • Does not display any changes. To display changes, call IModelDoc2::GraphicsRedraw2.

This property's functionality is for graphical purposes only and does not affect solid models. For example, if you want to animate the explode steps for an assembly, then maintaining assembly mate and in-context relationships is not needed or desirable.

Before setting a presentation transform, you must set IAssemblyDoc::EnablePresentation to true. IAssemblyDoc::EnablePresentation must then be set to false after a user is finished with presentation transforms and has called IComponent2::RemovePresentationTransform, which removes any transform applied by IComponent2::PresentationTransform. After calling this method, the component is next drawn in a position consistent with its underlying geometry (IComponent2::Transform2).

The preferred way to change the position of an assembly component is to use the IDragOperator object. This object allows access to the settings for the Move Component command in the SolidWorks user interface. Components moved with this API honor all assembly mate and in-context relationships.  When done moving a component (IDragOperator::EndDrag), you might have to call IModelDoc2::EditRebuild3 to update any model geometry.

 

 



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