Landscape Alpha Map Using Splines?

Development World Creation
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1

Hi,

I am trying to make a game environment which is going to be a trench system. I have created the texture i would like to tile across the landscape that unreal engine generated. What i would like to do is use the spline tool to try and create an alpha map with zero opacity. The reason for this is so that i can model my trench system within MAYA and then just adjust the rest of the environment within the game engine. Is this possible?

Thanks for any help.

2

Would this be adequate?

Or does it need to be a spline?

3

Spot on mate. great help.