5 #########################################################################
6 # Cannot project point on curve
7 #########################################################################
9 bsplinecurve r3 2 6 1 3 2 1 3 1 4 1 5 1 6 3 2 5 3 1 3 7 3 1 4 8 3 1 4 8 3 1 4 8 3 1 5 9 3 1 9 7 3 1
10 bsplinecurve r4 2 6 2 3 2.5 1 3 1 3.5 1 4 1 4.5 3 -1 2 3 1 1 11 3 1 3 9 3 1 3 9 3 1 3 9 3 1 5 7 3 1 7 4 3 1
11 set info [extrema r3 r4]
13 if { [regexp "Extrema 3 is point : 4 8 3" $info] != 1 || [regexp "Extrema 8 is point : 4 8 3" $info] != 1 } {
14 puts "Error : Point of extrema is wrong"
16 puts "OK: Point of extrema is valid"