Description: OnGUI is a method in Unity used to render and handle events for the graphical user interface (GUI). This method is called multiple times per frame, allowing developers to create dynamic user interface elements and respond to user interactions in real-time. OnGUI is part of Unity’s immediate mode GUI system, which enables the quick and easy creation of buttons, labels, text boxes, and other visual components. Through this method, developers can define how these elements should be drawn and behave on the screen, using a set of functions that specify the position, size, and style of each component. Although OnGUI is easy to use and provides a quick way to implement interfaces, its usage has declined in favor of more modern and efficient systems, such as the Canvas-based UI system, which offers greater flexibility and performance. However, OnGUI remains relevant for rapid prototyping and situations where a simple implementation of interface elements is required without the need for complex design.
