Homework 6

Add lights and smooth surfaces to your previous program.

This assignment is worth 50 points.

When you finish this homework, you should have

Extend homework 5 in a number of ways.

Shading and lighting: implement shading and lighting in a fragment shader, you should perform Gouraud or smooth shading. This will distort some figures, but the purpose is to do the shading. You may start from the shader I provided in the notes or from Angel's shader from chapter 5.
Extend your object to include lighting properties, and to set these properties as they relate to your shader implementation.
Extend your object to include vertex normals. In an .xoff file, The format for an .xoff file is:
- A number, either 3 for triangles or 4 for quads in the mesh.
- n the number of vertexes,
- the values of n vertexes
- The values of n vertex normals
- The polygon list as before.
Your object should be able to handle a figure composed completely of either triangles or quads.
Develop a tool which will take a .off file and produce an .xoff file. Use the method described on page 278 to accomplish this. This should NOT be part of your program.
Develop a tool which will construct a surface. You should be able to specify the boundaries of the surface, along with the height values at a number of "control" points. Your software should then step across the other points in the surface interpolating the height value. Your program may be interactive, or work from a configuration file, but it should produce an .xoff file.

Please add the following keypress controls to your system

0 - toggle ambient lighting.
digits 1 through 9: toggle the associated light on and off. You do not need to implement 9 lights, just two, but if you implement additional lights, control them with the digits.
w - toggle wireframe and smooth shading.

Further discussion

You should start in a reasonable position with several objects in view.
Feel free to use whatever models you wish, but you must provide me with the models so that I can test yous programs.
Feel free to add additional "cool" features, be sure to document these in your README.
Your program must use the vertex shader to perform the actual rotation.
Your program must use a fragment shader to implement lighting. You should allow at least two lights, which can be turned on and off.

Your code, a Makefile, and a README file.

You should email tar file as an attachment to a message to danbennett360@gmail.com.