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0030595: Oriented Bounding Box seems not optimal for some shapes

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Add possibility of construction of the Optimal Oriented Bounding Box from set of points (the case of shape with triangulation).

The interface of the BRepBndLib::AddOBB method is not changed, but the option <theIsOptimal> now controls also the construction of the OBB from Set of points.
The slightly modified DiTo algorithm will be used, checking all possible axes created by the extreme points.
The performance of the construction of the Optimal OBB is lower but the quality is usually much higher (can't be worse by definition).

Test cases for the issue.
This commit is contained in:
emv
2019-04-18 11:17:18 +03:00
parent 6b41f0f335
commit 1bb67d3844
12 changed files with 579 additions and 129 deletions
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4
src/BRepTest/BRepTest_BasicCommands.cxx
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@@ -1486,7 +1486,9 @@ void BRepTest::BasicCommands(Draw_Interpretor& theCommands)
"\n\t\t: -noTriangulation Force use of exact geometry for calculation"
"\n\t\t: even if triangulation is present."
"\n\t\t: -optimal Force calculation of optimal (more tight) AABB."
"\n\t\t: In case of OBB, applies to initial AABB used in OBB calculation."
"\n\t\t: In case of OBB:"
"\n\t\t: - for PCA approach applies to initial AABB used in OBB calculation"
"\n\t\t: - for DiTo approach modifies the DiTo algorithm to check more axes."
"\n\t\t: -extToler Include tolerance of the shape in the resulting box."
"\n\t\t:"
"\n\t\t: Output options:"