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extend [2018/05/03 11:13]
brucemutton [Extended elevation scrap drawing considerations]
extend [2018/06/08 22:13] (current)
brucemutton [extend] ignore breaks loop, better terminology
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 ''​extend ignore <​leg>''​ - generation of extended centreline shall not take this leg, it will take the (an)other leg if possible.\\ ''​extend ignore <​leg>''​ - generation of extended centreline shall not take this leg, it will take the (an)other leg if possible.\\
   * If the leg is an open branch (does not loop back to the main centreline),​ then this has the effect of hiding the entire branch from this leg onwards, at this leg.   * If the leg is an open branch (does not loop back to the main centreline),​ then this has the effect of hiding the entire branch from this leg onwards, at this leg.
-  * If leg is part of a loop, a loop connection gap, with joining map-connection line will be formed between two instances of the first station in the leg specification.+  * If leg is part of a loop, it beaks the loop.  ie a loop connection gap, with joining map-connection line will be formed between two instances of the first station in the leg specification.
 The order of stations in your ignore statement should usually match the direction of extended elevation centreline generation. ​ However if Therion seems to ignore this ignore statement, try reversing the order of the stations in your ignore statement, and it might work!  Sometimes the leg specification needs to follow the direction of survey, if it differs from the current direction of extend generation.\\ The order of stations in your ignore statement should usually match the direction of extended elevation centreline generation. ​ However if Therion seems to ignore this ignore statement, try reversing the order of the stations in your ignore statement, and it might work!  Sometimes the leg specification needs to follow the direction of survey, if it differs from the current direction of extend generation.\\
 ''​extend ignore <​station>''​ - where <​station>​ is one leg past a junction in the direction of generation. ​ The generation of extended centreline shall not take this leg. I have found this syntax unreliable, and the following may explain why. Marco Corvi says (if I understand correctly) this does not work where there are only three legs meeting at a junction ie the usual case.  So only for use where 4 or more legs meeting at junction(?​). ''​extend ignore <​station>''​ - where <​station>​ is one leg past a junction in the direction of generation. ​ The generation of extended centreline shall not take this leg. I have found this syntax unreliable, and the following may explain why. Marco Corvi says (if I understand correctly) this does not work where there are only three legs meeting at a junction ie the usual case.  So only for use where 4 or more legs meeting at junction(?​).
  • extend.txt
  • Last modified: 10 days ago
  • by brucemutton