Selection
DG Kernel provides several methods for selection of objects.
Also, entities with mesh geometry allow selection of mesh elements: simplexes and
vertices
See also: Pick sample
Object Selection
By default selected entities are highlighted with reddish grey color. This color can be customised via
DGK > GetView() > IVIew > IView_DG > IKCContext2 > SetColorParam(EColorParams.eColorSelectedEntity, ...)
There are multiple ways to select objects:
Selection via the current entity
This method allows selection of an object with a single click. When the
component is in Modify mode click on an object raises
CurrentObjectChanged event, which informs the application
about the selected object
Selection via IPick interface
This method is fully programmatic. Methods of
IPick can be called directly
without any human interaction
Selection via the Selection Event
This method allows selection of multiple objects.
Details
Selection of surface elements
Selection of surface elements can be handled by using the
Selection Event in response to user issuing an
Advanced > Edit > Select > (Vertices, Edges, Faces or Objects) command via the context menu.
The actual selection is made via left-click and drag to draw a selection
rectangle over a single entity. In this version only "Mesh" and "BRep" type of geometries can be inspected this way. Other types of geometries are ignored.
Browsing geometric structures
Browsing of internal structure of BRep STEP-compliant parametric objects is
possible programmatically. See the Shape
Explorer sample. Please contact us to request
interactive selection of this kind of elements. The same is possible with Mesh geometries (Morph sample).
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