protected internal virtual void Update() { LProcess process = LSystem.GetProcess(); if (process != null) { this._halfWidth = process.GetWidth() / 2; this._halfHeight = process.GetHeight() / 2; } else if (LSystem.viewSize != null) { this._halfWidth = LSystem.viewSize.GetWidth() / 2; this._halfHeight = LSystem.viewSize.GetHeight() / 2; } }