get_bounding_box

If there are touch sequences being currently handled by this, this function returns true and fills in rect with the bounding box containing all active touches.

Otherwise, false will be returned.

Note: This function will yield unexpected results on touchpad gestures. Since there is no correlation between physical and pixel distances, these will look as if constrained in an infinitely small area, rect width and height will thus be 0 regardless of the number of touchpoints.

Parameters:

this	a Gesture
rect	bounding box containing all active touches.

Returns:

true if there are active touches, false otherwise