switched from float64 to float32

var (

	// Phi is the "golden ratio" ( https://en.wikipedia.org/wiki/Golden_ratio ).

	Phi float64

	Phi float32

)

func init() {

	Phi = 0.5 * (1.0 + math.Sqrt(5.0))

	Phi = float32(0.5 * (1.0 + math.Sqrt(5.0)))

}

// Icosahedron holds the information for an icosahedron in one place.

	return r

}

func (v Vertex) scale(s float64) Vertex {

func (v Vertex) scale(s float32) Vertex {

	var r Vertex

	r.x = v.x * s

	r.y = v.y * s

	return r

}

func calculateMidPoint(va Vertex, vb Vertex, r float64) (Vertex, error) {

func calculateMidPoint(va Vertex, vb Vertex, r float32) (Vertex, error) {

	vr := va.add(vb.sub(va).scale(r))

	return vr, nil

// Vertex is the tuple (x,y,z).

type Vertex struct {

	x, y, z float64

	x, y, z float32

}

// Vertices of a regular icosahedron.