There is no equivalent API to Perimeter Edges control in HOOPS Communicator at the moment.
You may instead change the visibility of HardEdges using the API View.setHardEdgesEnabled()
e.g. hide face, show hard edges
...
You may instead use setSilhouetteEnabled() API to draw the contours of the model.
e.g. hide face, show silhouette
...
. For more information on how to draw model contours/outlines, check out our forum post.