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0030560: Modeling Algorithms - Improvement of the method BRepTools::DetectClosedness

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1. Rewrite the method BRepTools::DetectClosedness.
2. Correct the method BRepOffset_Tool::EnLargeFace to process properly non-periodic but closed faces.
This commit is contained in:
jgv
2019-03-14 12:38:09 +03:00
committed by apn
parent 31fe1f8ec4
commit 85c103d277
4 changed files with 43 additions and 33 deletions
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9
src/BRepOffset/BRepOffset_Tool.cxx
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@@ -3103,6 +3103,7 @@ Standard_Boolean BRepOffset_Tool::EnLargeFace
TopLoc_Location L;
Handle (Geom_Surface) S = BRep_Tool::Surface(F,L);
Standard_Real UU1,VV1,UU2,VV2;
Standard_Boolean uperiodic = Standard_False, vperiodic = Standard_False;
Standard_Boolean isVV1degen = Standard_False, isVV2degen = Standard_False;
Standard_Real US1,VS1,US2,VS2;
Standard_Real UF1,VF1,UF2,VF2;
@@ -3146,6 +3147,7 @@ Standard_Boolean BRepOffset_Tool::EnLargeFace
}
if (S->IsUPeriodic()) {
uperiodic = Standard_True;
Standard_Real Period = S->UPeriod();
Standard_Real Delta = Period - (UF2 - UF1);
Standard_Real alpha = 0.1;
@@ -3155,6 +3157,7 @@ Standard_Boolean BRepOffset_Tool::EnLargeFace
}
}
if (S->IsVPeriodic()) {
vperiodic = Standard_True;
Standard_Real Period = S->VPeriod();
Standard_Real Delta = Period - (VF2 - VF1);
Standard_Real alpha = 0.1;
@@ -3199,6 +3202,12 @@ Standard_Boolean BRepOffset_Tool::EnLargeFace
//Detect closedness in U and V directions
Standard_Boolean uclosed = Standard_False, vclosed = Standard_False;
BRepTools::DetectClosedness(F, uclosed, vclosed);
if (uclosed && !uperiodic &&
(theLenBeforeUfirst != 0. || theLenAfterUlast != 0.))
uclosed = Standard_False;
if (vclosed && !vperiodic &&
(theLenBeforeVfirst != 0. && theLenAfterVlast != 0.))
vclosed = Standard_False;
MakeFace(S,UU1,UU2,VV1,VV2,uclosed,vclosed,isVV1degen,isVV2degen,BF);
BF.Location(L);