TODO
		t -- interpolation weight.
		p0, p1, p2, p3 -- the points defining the spline curve.
		Used internally by [page:SplineCurve SplineCurve].
		
		t -- interpolation weight.
		p0, p1, p2 -- the starting, control and end points defining the curve.
		Used internally by [page:QuadraticBezierCurve3 QuadraticBezierCurve3], [page:QuadraticBezierCurve QuadraticBezierCurve] and [page:Font Font].
		
		t -- interpolation weight.
		p0, p1, p2, p3 -- the starting, control(twice) and end points defining the curve.
		Used internally by [page:CubicBezierCurve3 CubicBezierCurve3], [page:CubicBezierCurve CubicBezierCurve] and [page:Font Font].
		
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]