func (p *ScalarParam) setRegionsFunc(r1, r2 int, f script.ScalarFunction) {
if Const(f) {
p.setRegions(r1, r2, []float64{f.Float()})
} else {
f := f.Fix() // fix values of all variables except t
p.setFunc(r1, r2, func() []float64 {
return []float64{f.Eval().(script.ScalarFunction).Float()}
})
}
}