OCCT

puts "TODO OCC25206 ALL: ERROR: OCC25206 is reproduced."

puts "========"
puts "OCC25206"
puts "========"
puts ""
##########################################
# Fillet creates edge with C0 continuity
##########################################

restore [locate_data_file bug25206_lampe-1-draw-Fusion.brep] Fusion

explode Fusion E
set edges [explode Fusion E]
blend Fillet Fusion 25 Fusion_4 25 Fusion_5 25 Fusion_6 25 Fusion_7 25 Fusion_8 25 Fusion_9 25 Fusion_10 25 Fusion_11 25 Fusion_12
explode Fillet E
renamevar Fillet_8 E8
set bug_info [dump E8]

# Find section "VKnots" in dump and cut it
set bug_info [string trim [string range $bug_info [string first "VKnots" $bug_info] [expr {[string length $bug_info] - 1}]]]

# Get value for VKnots #7
set VKnots_7 [lindex $bug_info 29]
# Get value for VKnots #8
set VKnots_8 [lindex $bug_info 33]

# Check CO continuity
if {$VKnots_7 == 8 && $VKnots_8 == 9} {
  puts "ERROR: OCC25206 is reproduced. CO continuity has been detected."
}