FrustumLens
inline fun <T : Number, Comparable<T>> FrustumLens(left: T, right: T = -left, bottom: T, top: T = -bottom, near: T, far: T): FrustumLens<T>
Returns a new lens for a perspective projection defined by a given frustum.
The frustum is defined by its near and far depth clipping planes, and its left, right, bottom and top clipping planes (specified at the near depth).