cschell posted at 2:31PM Wed, 09 August 2017 - #4311751

Yep, a transparency map would be the way to go... white is solidly visible and black is fully transparent/invisible and shades of grey give partial transparency, depending on how gradual you want the transition to be from visible to transparent. You'll want either full white/nearly black with the map slit 50/50, or a gradual fade from white to dark grey or black dependent on how transparent you want it to become and where...

Thanks.