Thetype exposes the following members.
Gets the clipping box for this object. The clipping box is typically the union of the boundingboxes of all the geometry that is drawn by this object.
Gets or sets a value indicating whether or not this object is currently drawing preview flags.
Gets a value indicating whether or not this object (in its current state) can draw geometric previews at all.
Implement this function to draw all shaded meshes. If the viewport does not support shading, this function will not be called.
Implement this function to draw all wire and point geometry previews.