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fix offset bug

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This commit is contained in:
Adrian Mariano
2021-09-21 20:20:18 -04:00
parent 3c6e9804a8
commit 43f37908df
1 changed files with 3 additions and 2 deletions
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5
regions.scad
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@@ -763,7 +763,8 @@ function offset(
// Note if !closed the last corner doesn't matter, so exclude it // Note if !closed the last corner doesn't matter, so exclude it
parallelcheck = parallelcheck =
(len(sharpcorners)==2 && !closed) || (len(sharpcorners)==2 && !closed) ||
all_defined(closed? sharpcorners : list_tail(sharpcorners)) all_defined(closed? sharpcorners : select(sharpcorners, 1,-2)),
f=echo(sharpcorners=sharpcorners)
) )
assert(parallelcheck, "Path contains sequential parallel segments (either 180 deg turn or 0 deg turn") assert(parallelcheck, "Path contains sequential parallel segments (either 180 deg turn or 0 deg turn")
let( let(
@@ -775,7 +776,7 @@ function offset(
: :
[for(i=[0:len(goodsegs)-1]) [for(i=[0:len(goodsegs)-1])
let(prevseg=select(goodsegs,i-1)) let(prevseg=select(goodsegs,i-1))
i==0 && !closed ? false // In open case first entry is bogus (i==0 || i==len(goodsegs)-1) && !closed ? false // In open case first entry is bogus
: :
(goodsegs[i][1]-goodsegs[i][0]) * (goodsegs[i][0]-sharpcorners[i]) > 0 (goodsegs[i][1]-goodsegs[i][0]) * (goodsegs[i][0]-sharpcorners[i]) > 0
&& (prevseg[1]-prevseg[0]) * (sharpcorners[i]-prevseg[1]) > 0 && (prevseg[1]-prevseg[0]) * (sharpcorners[i]-prevseg[1]) > 0