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rings: remove Lens type #14

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Aug 17, 2018
Merged

rings: remove Lens type #14

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18 changes: 0 additions & 18 deletions plotter/rings/angles.go
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Original file line number Diff line number Diff line change
Expand Up @@ -189,21 +189,3 @@ func (a Arcs) containingArcOf(f Feature) (Arc, bool) {
}
return arcNaN, false
}

// Lens is an ArcOfer that can arbitrarily scale the arc of a feature.
type Lens struct {
ArcOfer

// Optics is a contextual arc scaling function.
Optics func(loc, f Feature, base, arc Arc) (Arc, error)
}

// ArcOf returns a scaled arc determined by a call to the Optics function using the
// arc returned by the embedded ArcOfer's ArcOf method.
func (l Lens) ArcOf(loc, f Feature) (Arc, error) {
arc, err := l.ArcOfer.ArcOf(loc, f)
if err != nil {
return arc, err
}
return l.Optics(loc, f, l.ArcOfer.Arc(), arc)
}