abeLayerAndNot

abeLayerAndNot(
o_abeLayer1 
o_abeLayer2 
o_abeOutputLayer 
[ ?queue g_queue ] 
)
=> t / nil

Adds shapes to the ABE output layer where shapes on layer1 do not overlap shapes on layer2.

o_abeLayer1	ID of ABE layer1.
o_abeLayer2	ID of ABE layer2.
o_abeOutputLayer	Adds shapes to this ABE layer
`?queue` g_queue	Adds the function to the queue if set to `t`, rather than running it immediately. Functions in the queue are not run until `abeRunQueue` is issued.

`t`	The function was run or queued successfully.
`nil`	The function was not successful because ABE is not initialized or there was an argument error.

Adds shapes to the result ABE layer where a1 ABE layer shapes do not overlap shapes on the a2 ABE layer.

abeLayerAndNot( a1 a2 result )