Spherical shading
Thomas Porter · ACM SIGGRAPH Computer Graphics · 1978
Hidden surface algorithms in three-dimensional computer graphics have relied on polygons and patches as primitive objects.Spheres are shown to be computationally feasible for transforming and shading.A fast algorithm is presented for the shaded surface display of intersecting spheres.Problems of aliasing common to polygonbased images are resolved.The contribution to molecular graphics is demonstrated.