fastjet/internal/delaunay: consider replacing Triangle.{A,B,C} with Triangle.Points

[sbinet]

Paraphrasing @vladimir-ch:

Consider replacing A, B, C *Point: https://github.com/go-hep/hep/blob/b0c08641fd2eed633fca25b79dd60b72c56bc828/fastjet/internal/delaunay/triangle.go#L19

// Triangle is a set of three points that make up a triangle.
// It stores hierarchical information to find triangles.
type Triangle struct {
    // children are triangles that lead to the removal of this triangle.
    // When a point is inserted the triangle that contains the point is found by going down the hierarchical tree.
    // The tree's root is the root triangle and the children slice contains the children triangles.
    children []*Triangle
    // A,B,C are the CCW-oriented points that make up the triangle
    A, B, C *Point
    // isInTriangulation holds whether a triangle is part of the triangulation
    isInTriangulation bool
}

with a simple field Points [3]*Point. This would simplify the code at various places. For example in findNearest.

[Bastiantheone]

I agree it would definitively simplify the code, but I think using A,B and C makes it more user friendly.

[Bastiantheone]

Do you think I should change it anyways? @sbinet

[sbinet]

I am agnostic for the moment. I'll play with the proposed change during the week-end and see whether I like what I see :)

[Bastiantheone]

Sounds good :)