I've been designing radial menus (also known as pie menus, or contextual menus) for some time. Mostly for the video game industry. I've had a lot of success with them, and I find them helpful for presenting players with primary, secondary, and complimentary actions based on a single click.
But I've made a lot of assumptions with these menus, and I wonder if there is much research out there on the topic of hierarchy. For a menu with 4 choices, I've made the assumption that there is an order where the user (player) would look. Here is the order I've assumed:
Therefore, I've placed my actions appropriately:
- Up - Primary
- Down - Secondary
- Right - Tertiary
- Left - Least important
Do any of you know of any research to support/challenge this assumption? Is this just a heuristic call?
Thank you for the help!