In 3.5, you would define a spline as follows:
#declare MySpline =
spline {cubic_spline
-.25, <0,0,-1>
0.00, <1,0,0>
0.25, <0,0,1>
0.50, <-1,0,0>
0.75, <0,0,-1>
1.00, <1,0,0>
1.25, <0,0,1>
}
And implement it using MySpline(val)
Does val not indicate the position along the spline, i.e, 0.1 would be 10%
along the length of the spline etc.?
-tgq
