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Re: T-Junctions re-visited
March 14, 2013 03:41PM
This may be a result of an oversight I made. For small triangles the algorithm might find a false hit. Try replacing
# O (N_Edges N_Points)
for I,J in Edges
  for K in Points
    DIJ=Dist(P(I),P(J))
    DIK=Dist(P(I),P(K))
    DJK=Dist(P(I),P(K))
    if (abs(DIJ-(DIK+DJK))<TOL)
      # K is on the line between I & J
      PushLineTrio(I,J;K)
    endif
  endfor
endfor
by (here RTOL should be something like 1e-4, adjust to taste)
# O (N_Edges N_Points)
for I,J in Edges
  for K in Points
    DIJ=Dist(P(I),P(J))
    DIK=Dist(P(I),P(K))
    DJK=Dist(P(I),P(K))
    if ((abs(DIJ/(DIK+DJK)-1.0)<RTOL) && (abs(DIJ-(DIK+DJK))<TOL))# CHANGED TO INCLUDE A RELATIVE CHECK TOO
      # K is on the line between I & J
      PushLineTrio(I,J;K)
    endif
  endfor
endfor


Edited 4 time(s). Last edit at 2013-03-14 03:44PM by Tim Gould.
SubjectAuthorViewsPosted
T-Junctions re-visited Travis Cobbs664March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould311March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert302March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik302March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert279March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik284March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert269March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik285March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert284March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs298March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith316March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann281March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik282March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould279March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann274March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann280March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik251March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann248March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik257March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg248March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs328March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik281March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs290March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik298March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs281March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik300March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert311March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs279March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert325March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik308March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert300March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik322March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert332March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs310March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould292March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs283March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik272March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs278March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs287March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik265March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik280March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert273March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain276March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik300March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith298March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert299March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik699March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann300March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert273March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould252March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano263March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert321March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould290March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik273March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould338March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik331March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert281March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik251March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert266March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik245March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert265March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik291March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs311March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert326March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould339March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert308March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould268March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert260March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould265March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik329March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert322March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs290March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik311March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs299March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik247March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert250March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs279March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs314March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert290March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs327March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert345March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano331March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert278March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano333March 27, 2013 01:48PM



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