puts ""
puts "=========================================================================="
puts "OCC31661: Modeling Data - Algorithm crashes when projecting parabola or hyperbola to plane"
puts "=========================================================================="
puts ""

hyperbola h 0 0 0  1 1 1  2 0 -2  10 10
plane pln 0 0 0  0 0 1
projonplane rh h pln 0

if {![regexp {Hyperbola} [dump rh]]} {
  puts "ERROR: Projected curve is not a hyperbola"
}

trim h h -5 5
projonplane rh h pln 0

if {![regexp {Hyperbola} [dump rh]]} {
  puts "ERROR: Projected curve is not a hyperbola"
}

checklength rh -l 1664.3732976598988
bounds rh t1 t2
checkreal t1 [dval t1] -5.23179933356147 1.e-7 1.e-7
checkreal t2 [dval t2] 4.76820064934972 1.e-7 1.e-7