abeLayerXor

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

Adds rectangles and polygons to the ABE output layer where ABE layer1 shapes and ABE layer2 shapes do not overlap.

o_abeLayer1	ID of ABE layer1.
o_abeLayer2	ID of ABE layer2.
o_abeOutputLayer	ID of the ABE output 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 shapes on the a1 ABE layer and the a2 layer do not overlap.

abeLayerXor( a1 a2 result )