Generation of Model Data

Abstract

The previous chapter introduced our method for constructing and drawing scenes: a function scene is used to construct data about a three-dimensional scene via construction routines, some input from file. Then the vertices are transformed into the OBSERVED position, and the function drawit is called to display the scene In the following chapters we will give a number of different types of drawit, project and facet display functions, dependent only on the projection and type of picture you require: line drawing, colour with/without shading, shadows etc. All the reader need do is create the relevant scene and construction routines and call the correct drawit function.