OBD:AGQG: Difference between revisions

OBD:AGQG (view source)

548 bytes added , 27 April 2007

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 :0x00 00 '''80''' 00 - no decal
 :0x00 00 00 '''01''' - furniture
-:0x00 00 00 '''02''' - '''unknown
+:0x00 00 00 '''02''' - projection plan bit 0, see below
-:0x00 00 00 '''04''' - '''unknown
+:0x00 00 00 '''04''' - projection plan bit 1, see below
 :0x00 00 00 '''08''' - sound-transparent
 :0x00 00 00 '''10''' - impassable
@@ Line 89: / Line 89: @@
 :0x00 00 00 '''40''' - unknown, never used in files
 :0x00 00 00 '''80''' - unknown, never used in files
+;Projection plane flags
+These 2 flags can be 00, 01, 10 and 11. That means the values 0,1,2 and 3 which have the following meanings:
+:*0 - No projection plane specified. One can be computed if needed. Never used in files, may slow down the game if used.
+:*1 - Project quad on XY plane.
+:*2 - Project quad on XZ plane.
+:*3 - Project quad on YZ plane.
+:The projection plane is used to determine if a point is in a quad (this point is usually the result of an intersection between a ray and the quad plane).
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