Pickle jars don't have to be as hard to open as they are in real life
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Interaction:
Focus and active states are necessary.
Shouldn’t have to point this out by now, but nothing in VR is obviously actionable, so either have the object or the reticle indicate something is actionable when focused upon. Sounds are helpful to support this, especially on the active state.Motion:
Avoid lateral motion with close/large objects, and at high speeds.
If you think motion is appropriate, short/slow steps towards and away from the camera are much easier to stomach.
Avoid fast motion toward the user. Remember what you do when something is moving quickly towards your face: you duck. Especially for practical applications, this is probably not the instinct you want to trigger in your users.
Be careful about moving the user. If you need to move the user in 3d space (which really means move the camera), don’t use acceleration — linear motion only. The best option is to instantly move them from one position to the other (called “teleporting” them). Follow these rules: forward > backward, up / down > strafe left / right, fast camera cuts > gentle camera rotations.Reticles:
Should be rendered at the same distance as the content the user is focusing on....
