mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-03 17:56:21 +03:00
6fd9bdf2cc
Method Segment() of B-spline curve and surface has been extended by parameter theTolerance (theUTolerance and theVTolerance for surface), which defines the proximity between knots of a NURBS and boundaries of cutting segment. The default value of the tolerance is Precision::PConfusion(). Test cases have been added to check segmenting of B-spline surface and curves both 2D and 3D.
33 lines
850 B
Plaintext
33 lines
850 B
Plaintext
puts "========"
|
|
puts "0030645: Modeling Algorithms - B-spline segmentation produces wrong parametrization"
|
|
puts "========"
|
|
puts ""
|
|
|
|
restore [locate_data_file bug30645.brep] result
|
|
|
|
set tolerance 1.e-9
|
|
segsur result 13.527990713022374 14.030423915738853 54.831990159753303 59.000000000000028 $tolerance
|
|
|
|
set surf [dump result]
|
|
|
|
regexp {VKnots +:\n(.*)} $surf full vknots
|
|
set is_different_knots 1
|
|
set vknots_list {}
|
|
while { "$vknots" != "\n\n" && $is_different_knots } {
|
|
regexp { +([0-9]+) +: +([-0-9.+eE]+) *([0-9]+)\n(.*)} $vknots full index knot weight rest
|
|
foreach k $vknots_list {
|
|
if { [expr abs($k - $knot)] < $tolerance } {
|
|
set is_different_knots 0
|
|
}
|
|
}
|
|
|
|
lappend vknots_list $knot
|
|
set vknots $rest
|
|
}
|
|
|
|
if { $is_different_knots } {
|
|
puts "OK: all knots are different"
|
|
} else {
|
|
puts "ERROR: segment has knots too close"
|
|
}
|