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occt/tests/bugs/modalg_6/bug27310_1
nbv 261b7d9e8a 0028222: Intersection of two cylinders fails
1. The reason of exception has been eliminated.

2. Algorithm in IntPatch_WLineTool::JoinWLines(...) method has been modified in order to forbid join curves in the point where more than two intersection lines meet. More over, joining is forbidden if local curvature in the connection point is too big (see function CheckArgumentsToJoin(...) in the file IntPatch_WLineTool.cxx).

3. Interface of IntPatch_WLineTool::JoinWLines(...) method has been modified in order to reduce number of arguments.

4. Small corrections in IsSeamOrBound(...) static function has been made. Namely, check has been added if two boundaries are in the same period region but are too far each to other (see IntPatch_WLineTool.cxx, IsSeamOrBound(...) function, line # 532).

5. "Reversed" flag has been made local. Now, it is pure local characteristic: the algorithm decides itself, shall we reverse the argument order. This correction makes the algorithm more commutative (see issue #25404). However, IntPatch_WLineTool::JoinWLines(...) method can return non-commutative result.

6. Algorithm of searching small intersection curves has been improved.

7. New methods have been added in Bnd_Range class.

Some test cases have been adjusted according to their new behavior.

1. tests\bugs\modalg_6\bug26310_3
   tests\bugs\modalg_6\bug26310_4
   tests\bugs\moddata_2\bug235
   tests\perf\modalg\bug26310_1
   tests\bugs\modalg_5\bug24915

Logic of these cases has been changed. Mover over, additional check has been added in "bug26310_1" test case. Therefore, its performance will be slower than on the current MASTER.

2. tests\bugs\modalg_5\bug25292*

Scripts have been rewritten in order to make it more readable. Logic of these cases has not been changed.
2017-05-26 14:48:59 +03:00

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puts "========"
puts "OCC27310"
puts "========"
puts ""
#################################################
# Huge tolerance obtained in the result of intersection of two cylindrical faces
#################################################
# Number of intersection curves cannot be subject to anything (indeed, output result can be empty).
# The main reason of the bug #27310 was a HUGE TOLERANCE VALUE (TolReached > 10).
# See test "bugs moddata_2 bug496" in case of doubt.
set ExpTol 1.0e-7
restore [locate_data_file OCC496a.brep] a
restore [locate_data_file OCC496b.brep] b
explode a f
explode b f
set log [bopcurves a_8 b_2 -2d]
regexp {Tolerance Reached=+([-0-9.+eE]+)\n+([-0-9.+eE]+)} ${log} full Toler NbCurv
checkreal TolReached $Toler $ExpTol 0.0 0.1