👉 Ray math is a computational geometry technique used to efficiently determine intersections between geometric objects, such as lines, segments, polygons, and circles, in a two-dimensional plane. It leverages ray casting, where rays are projected from the viewpoint through each pixel of the image plane to the scene. Intersections are identified by checking these projections against the geometric objects, typically using algorithms like the Separating Axis Theorem (SAT) for convex shapes or more specialized methods for non-convex polygons. This approach is particularly useful for real-time applications like computer graphics, game development, and geographic information systems (GIS), where quick and accurate intersection detection is crucial. Ray math optimizes performance by focusing on the most relevant intersections, reducing computational overhead compared to checking every possible combination of objects.