GUI Implementation for Mouse Drawing in MATLAB

In MATLAB, drawing functionality using mouse input can be implemented through GUI components. By writing appropriate callback functions and event handlers, users can create interactive drawing applications on the GUI interface. The implementation typically involves several key components: 1. Creating figure windows and axes for drawing surface 2. Setting up mouse event callbacks (ButtonDownFcn, WindowButtonMotionFcn, WindowButtonUpFcn) 3. Using plot functions with real-time coordinate tracking 4. Implementing persistence mechanisms to maintain drawn elements Key MATLAB functions used include: - ginput() for coordinate capture - get(gca,'CurrentPoint') for real-time mouse position tracking - line() or plot() functions for rendering strokes - setappdata/getappdata for data persistence between callbacks The algorithm workflow generally follows: 1. Detect mouse button press to initiate drawing 2. Track mouse movement to create continuous lines or shapes 3. Capture mouse release to complete the drawing operation 4. Store drawing data for potential undo/redo functionality This approach enables users to perform freehand drawing, create geometric shapes, or implement specialized drawing tools through intuitive mouse interactions within the MATLAB GUI environment.