Method subpath

plotter/contour.go:599–605

subpath returns a subpath given the slice of point indices into the path.

(i []int)

// subpath returns a subpath given the slice of point indices
// into the path.
func (p path) subpath(i []int) path {
	pa := make(path, 0, len(i))
	for _, n := range i {
		pa = append(pa, p[n])
	}
	return pa
}

// linearPathsIn returns the linear paths in g created from p.
// If g contains any cycles linearPaths will panic.