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Merge branch 'master' into master

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Revar Desmera
2021-11-06 15:19:01 -07:00
committed by GitHub
parent 4315b8c0b6 92e84d0dc1
commit 41b7c210e8
9 changed files with 367 additions and 148 deletions
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4
regions.scad
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@@ -427,9 +427,9 @@ function _region_region_intersections(region1, region2, closed1=true,closed2=tru
for(p2=idx(region2))
let(
poly = closed2?close_path(region2[p2]):region2[p2],
signs = [for(v=poly*seg_normal) v-ref> eps ? 1 : v-ref<-eps ? -1 : 0]
signs = [for(v=poly*seg_normal) abs(v-ref) < eps ? 0 : sign(v-ref) ]
)
if(max(signs)>=0 && min(signs)<=0) // some edge edge intersects line [a1,a2]
if(max(signs)>=0 && min(signs)<=0) // some edge intersects line [a1,a2]
for(j=[0:1:len(poly)-2])
if(signs[j]!=signs[j+1])
let( // exclude non-crossing and collinear segments