public static Matrix4x4 Frustum(FrustumPlanes frustumPlanes)
 {
     return(Matrix4x4.FrustumInternal(frustumPlanes.left, frustumPlanes.right, frustumPlanes.bottom, frustumPlanes.top, frustumPlanes.zNear, frustumPlanes.zFar));
 }
 public static Matrix4x4 Frustum(float left, float right, float bottom, float top, float zNear, float zFar)
 {
     return(Matrix4x4.FrustumInternal(left, right, bottom, top, zNear, zFar));
 }