In what scenarios would you choose to use a perspective projection instead of an orthographic projection? How do they differ in terms of the final image output in 3D graphics?
Perspective projection is chosen when creating realistic 3D scenes, as it mimics human vision by incorporating depth and foreshortening. Orthographic projection is preferred for technical drawings or CAD applications, where accurate measurements and parallel lines are crucial.
The main difference between the two lies in how they represent depth. Perspective projection converges objects towards a vanishing point as they recede into the distance, making them appear smaller. This creates an illusion of depth, enhancing realism. In contrast, orthographic projection maintains object sizes regardless of their distance from the viewer, resulting in a flattened appearance without perspective distortion.
