func direcbetween(from, to *optim.Point, m optim.Mesh) []int {
d := make([]int, from.Len())
step := m.Step()
for i, x0 := range from.Pos {
d[i] = int((to.Pos[i] - x0) / step)
}
return d
}
func genPollPoints(from *optim.Point, span Spanner, m optim.Mesh) []*optim.Point {
ndim := from.Len()
dirs := span.Span(ndim)
polls := make([]*optim.Point, 0, len(dirs))
for _, d := range dirs {
polls = append(polls, pointFromDirec(from, d, m))
}
return polls
}
func pointFromDirec(from *optim.Point, direc []int, m optim.Mesh) *optim.Point {
pos := make([]float64, from.Len())
step := m.Step()
for i, x0 := range from.Pos {
pos[i] = x0 + float64(direc[i])*step
}
return &optim.Point{m.Nearest(pos), math.Inf(1)}
}
func New(start *optim.Point, opts ...Option) *Method {
m := &Method{
Curr: start,
ev: optim.SerialEvaler{},
Poller: &Poller{Nkeep: start.Len() / 4, SkipEps: 1e-10},
Searcher: NullSearcher{},
NsuccessGrow: -1,
StepMult: 1.0 / 1.7,
}
for _, opt := range opts {
opt(m)
}
m.initdb()
return m
}
