Ignoring an object in hittest

Question

Is it possible to ignore an object in SceneKit's hitTest so that when the hitTest ray is sent, it goes through an object? I still want to see both objects, i just want the ray to ignore another.

Here the top image shows how it works now, and the bottom is what i'd like to have.

I think that it would be possible by putting the sphere to another view, but i don't think that i could see the object then.

Answer 1

when performing the hit test you can use the SCNHitTestOptionCategoryBitMask option to restrict the set of nodes that are tested.

Nodes have a categoryBitMask property and only the ones for which the following condition is satisfied will participate in the hit test:

node.categoryBitMask & hitTestOptionCategoryBitMask != 0