Linedef type 491
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This linedef should be given a tag corresponding to the ID of the wanted PolyObject. The translucency is set by the front texture X offset of the control linedef or, if it is 0, the floor height of the control sector. There are 11 possible levels of translucency, ranging from 0 (opaque) to 10 (invisible). If Flag  / Lower Unpegged is set, the translucency level is specified directly in the front X offset or floor height. Otherwise, it is specified in multiples of 100, as shown by the table below:
|Without Lower Unpegged||With Lower Unpegged|
|0–99, or below 0||0 and below||0% (completely opaque)|
|1000 and above||10 and above||100% (completely invisible)|
Note that although 0 is a legal translucency value, if the front X offset is set to 0, the game will use the control sector floor height instead. In this case, make sure the floor height is also 0.
If Flag  / Peg Midtexture / Effect 3 is set, the supplied translucency value is added to the PolyObject's current translucency instead of replacing it. In this case, negative values can be used to reduce the PolyObject's translucency.
- Example file: ex_ld491_polyobject_settranslucency.wad (MAP01)
|How to use|