Notice, for instance, the types of figures typically associated with such rhetoric: the photon is usually drawn such that normal and immediate specular reflection
back out of the cavity is discounted (see Figure 3A-B).
of Technology, Sydney) describes how to write a ray tracer step-by-step, starting with design and programming and some essential mathematics and theoretical foundations, moving to such details as antialiasing, sampling techniques, mapping samples to a disk or a hemisphere, perspective viewing and developing a practical viewing system, nonlinear projections, stereoscopy, lights and materials, specular reflection
, shadows, ambient occlusion, area lights, ray-object interconnections, affine transformations, transforming objects, regular grids, triangle meshes, mirror reflections, global illumination, simple and realistic transparency, texture mapping, procedural textures and noise-based textures.
By offering both ATR and specular reflection
sampling geometries in modular form, the user can choose the best measurement method for a range of sample types, including liquids, powders, gels, creams, films and reflective surfaces.