INTERSECTING A RAY WITH A QUADRIC SURFACE
Joseph M. Cychosz, Purdue University CADLAB, West Lafayette, Indiana
Warren N. Waggenspack, Jr., IMRLAB, Mechanical Engineering, Louisiana State University, Baton Rouge, Louisiana
Publisher Summary
Quadric surfaces are common modeling primitives for a variety of computer graphics and computer-aided-design applications. Ray tracing or ray firing is also a popular method used for realistic renderings of quadric surfaces. This chapter presents an algorithm for locating the intersection points between a ray and general quadratic surfaces, including ellipsoids, cones, cylinders, paraboloids, and hyperboloids. The chapter describes a means for determining the surface normal at the point of ...
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