Abstract
There are many algorithms for architectural perspective drawings. Especially, ray tracing algorithm works well for perspectives as architectural design simulations. This paper presents some techniques of applied mapping for ray tracing. These are fllowings. (1) simple fuzzy object A particle creation on the surface of a primitive is displayed on a CRT by using random number. It is available for producing tree images using personal computer. (2) texture mapping with special effective data Most useful special effect is transparent function. This function can be used many occasions for thin solid. Example, they are lettering, net, lacework and etc. What's more, if we used this mapping twice, the tree image that contents leaves shape will be available very easily. The first mapping defines leaf location on primitive and the second defines each leaf shape. (3) architectural detail modelings by 3D mapping technique We usueally get the perspective images for a simple architectural model. Meanwhile, in general practically, an architecuture consists of great many parts. We hope those whole parts should be used in the simulation modeling. Luckily many same parts of architecture keep regular positions. Using 3D mapping techniqus, such parts will be distributed regularly. Consequentially the architectural model as same as practical one can be described by fewer primiteves. And we can get more realistic images of architecture easily.
