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Subject: 
Re: LDraw and the Track Designer (Was: Next show)
Newsgroups: 
lugnet.trains, lugnet.cad.dev
Date: 
Wed, 17 Feb 1999 19:43:40 GMT
Viewed: 
1639 times
  
Larry Pieniazek writes:
But rotations in 22.5 degree increments would be better, of course, and
11.25 might even be best, as we are then at the resolution of a curve
segment, no?

No, curves are 22.5 degrees. If you give Track Designer bitmaps at 0, 22.5, 45
and 67.5 degrees it can generate all the other possible rotations. However,
the existing registry only has track at all these rotations, road plates,
monorail[1] and buildings are at 0 degrees, so TD will only give you 90, 180
and 270, but I think that is sufficient for most cases.

Matt

[1] Interestingly, with monorail, even though it has 45 degree curves, it is
impossible to build anything at 45 degrees. This is because the 45 curves have
special ends that restrict you to another 45 degree curve, or the 45 degree
curved part of a switch. Therefore the 90 degree rotations are sufficient.



Message has 1 Reply:
  Re: LDraw and the Track Designer (Was: Next show)
 
(...) Duh, yes. 11.25 is just wishful thinking. Never mind. Well one teeny downside to your switch proposal is the new geometries that would result. worth it though, to be free from the tyranny the current geometry imposes. (26 years ago, 17-Feb-99, to lugnet.trains, lugnet.cad.dev)

Message is in Reply To:
  Re: LDraw and the Track Designer (Was: Next show)
 
(...) But rotations in 22.5 degree increments would be better, of course, and 11.25 might even be best, as we are then at the resolution of a curve segment, no? Since that requires rather complex calculations, it's more natural to have a rendering (...) (26 years ago, 17-Feb-99, to lugnet.trains, lugnet.cad.dev)

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