FMAR Gestures

The FMAR Gestures package provides a suite of helpful cross-platform gesture recognition scripts.

Directional Pinch Gesture

The directional pinch gesture is the simplest gesture. It is activated by:

1. Rotating the hand to the defined rotation.
2. Pinching the developer-defined finger with the thumb.

Optionally, the gesture may be activated only on a "double pinch," which significantly helps reduce false positives.

Open Palm Thrust Gesture

The open palm thrust gesture is activated by:

1. Opening the hand such that all fingers are extended in an "open palm" pose.
2. Thrusting the hand in the direction the palm is facing while holding the pose.

The thrust direction is defined by the developer, allowing for the same hand to perform different actions based on thrust direction, speed, and duration.

Pinch and Move Gesture

This gesture is likely the least intuitive of the bunch. Initial activation of this gesture is similar to the "Directional Pinch Gesture." Afterwards, the user needs to:

1. Maintain the pinch in the same direction.
2. Move their hand along the plane.

The distance of their hand from the starting position and the direction from the starting position are used to calculate scrollbar or joystick-like behaviors.

Thumbs-Up Gesture

Likely the most intuitive gesture of the group, the thumbs-up gesture is what you might expect. The user must:

1. Rotate their hand in the user-defined direction (by default, with their palm facing towards them).
2. Extend their thumb while gripping their other fingers into a loose (or tight) fist.

This gesture can be rotated to act as a thumbs-down gesture, thumbs-sideways, etc. Note that the gesture is activated from the perspective of the user, so a thumbs-up is "up" if it is "up" from the user's viewport, not world space. For instance, if the user was looking straight upwards, with hand held high in his point of view, while doing a thumbs-up gesture, their thumb would actually be pointing backwards behind them but would look as if it is "up" to the user.