CS559 Spring 2001: Project 2

A Maze Rendering Program

Due Date: 5pm Friday April 13

Project Description

Project Source Code

More Hints

• In class I said that typically clipping is performed after the projective transformation because it is easier. For this project, clipping is best done in world space because the visibility computations are best done there and clipping is an essential part of those computations.
• In Edge.h, the comment for the interpretation of the opaque member variable is ambiguous. An edge for which opaque is true cannot be seen through and cannot be walked through. That means an opaque edge can be seen and should be drawn.
• The relevant lecture slides for the projection required in this project are the two labeled "Basic Projective Projection" and "Basic Case". Note that those slides assume that the viewer is looking along the negative z axis. You will need to understand them then modify them approriately to fit the needs of this project.
• In the comments for Cross_Param() in LineSeg.h, I say "This will return parameters values outside the range 0,1". I should say "This might return parameter values that are greater than 1 or less than 0."
• All the code was written with 8 space tabs, whereas the Visual C++ editor defaults to 4 space tabs. This makes the code hard to read, and can be fixed by resetting the tabstops in the editor to be 8 space tabs. One of the stupidities of microsoft's devleopment environment. I could rant further, but I won't.
• In performing the viewing transformations, it is easiest to think of them as a sequence of individual transformations, and apply them one at a time. It is more complex to try to build a single matrix to do them all at once.