mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-03 17:56:21 +03:00
8574e3291f
Simple offset algorithm (BRepOffset_MakeSimpleOffset) is improved to handle the case when bspline surface has imprecise singularity at one of sides (when side is degenerated but not exactly to one point). In such case, the algorithm tries to collapse all poles of singular side of the surface to the same point; this allows avoiding flapping of normal due to small fluctuations of surface. If face being offset contains degenerated edges, then check for singularity is done using position and tolerance of corresponding vertices. In addition, each side is checked with some user-defined tolerance (by default Precision::Confusion()); this helps to process cases when no edge is located at that side or if such edge is not encoded as degenerated. New parameter Tolerance is introduced for that in BRepOffset_MakeSimpleOffset class. Tests added: bugs modelg_7 bug28968 - on isolated faces as reported in the issue, mostly for visual check (absence of loops) offset simple F01-05 - on original shells, checking tolerances of resulting shell
47 lines
1.3 KiB
Plaintext
47 lines
1.3 KiB
Plaintext
puts "# ===================================================================="
|
|
puts "# 0028968: Incorrect offset for the faces with singularities "
|
|
puts "# ===================================================================="
|
|
puts ""
|
|
puts "# This test checks that offset does not fail and produces valid shape with"
|
|
puts "# reasonable tolerance; however the real check for the problem is to be"
|
|
puts "# made visually using generated images that should have no loops"
|
|
puts "# (see images attached to Mantis issue)"
|
|
puts ""
|
|
|
|
set models {
|
|
bug28968_HA-3828b-31.brep
|
|
bug28968_HA-3781-31.brep
|
|
bug28968_HA-3781-25.brep
|
|
bug28968_HA-3781-01.brep
|
|
bug28968_HA-3623g-31.brep
|
|
bug28968_HA-3623g-22.brep
|
|
bug28968_HA-3623c-20.brep
|
|
bug28968_HA-3623c-19.brep
|
|
bug28968_HA-3623c-15.brep
|
|
bug28968_HA-3623b-31.brep
|
|
bug28968_HA-3623b-22.brep
|
|
bug28968_HA-3623a-28.brep
|
|
bug28968_HA-3623a-27.brep
|
|
bug28968_HA-3623a-26.brep
|
|
bug28968_HA-3623a-17.brep
|
|
}
|
|
|
|
set i 0
|
|
foreach file $models {
|
|
incr i
|
|
restore [locate_data_file $file] s$i
|
|
|
|
foreach command {offsetshapesimple} {
|
|
catch {$command res$i s$i 20. 0.01}
|
|
checkmaxtol res$i -min_tol 0.002
|
|
checkshape res$i
|
|
|
|
smallview
|
|
donly s$i res$i
|
|
fit
|
|
|
|
xwd "${imagedir}/${casename}_${command}_${i}_[file rootname $file].png"
|
|
# checkview -2d smallview -display face$i -display res$i -screenshot -path $savepath
|
|
}
|
|
}
|