CPSC 324, Fall 2002                       Information for the Third Test
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     The second test for this course will be given in class on Monday,
December 9.  It will cover material we have done since the second test.
This includes Lab 9 through Lab 12 Part 1, textures, homogeneous
coordinates and transformation matrices, lighting calculations, 
hierarchical graphics, scene graphs, indexed face sets, and ray-tracing.
You do not need to know the specific hierarchical graphics system from
Lab 11, and there will be no questions that are specifically about
Blender or POV-Ray.  There might be some sort of general, summing-up question
about computer graphics.  You should remember the following basic OpenGL
drawing functions and be prepared to write some code using them:
glVertex3f, glVertex3f, glColor3f, glNormal3f, glBegin(GL_POLYGON), glEnd.
Here is a more detailed list of topics:

       texture
       procedural texture
       image texture
       texture coordinates (s,t)
       mapping textures to objects
       particle system
       environment map
       homogenous coordinates (x,y,z,w)
       points at infinity
       light positions as homogenous coordinates
       matrix multiplication
       transformation matrix
       translation matrix
       scaling matrix
       matrix multiplication and composition of transformations
       why are matrices used?
       why are homogeneous coordinates used?
       lighting calculations
           ambient light, ambient color
           emissive color,
           diffuse light color, diffuse material color
           specular light color, specular material color
           normal vector, light rays and reflected rays
           specular exponent
           light attenuation factor
       hierarchical graphics
       solar system example and robot arm example
       scene graph
       dag (directed acyclic graph)
       traversing the scene graph
       relation of PushMatrix, PopMatrix to scene graph
       OpenGL display lists
       indexed face sets
       how vertex and face data are encoded for indexed face sets
       normals-by-face vs. normals-by-vertex
       colors-by-face vs. colors-by-vertex
       shortcomings of OpenGL-style rendering
       recursive ray-tracing
       the ray-tracing algorithm
       how ray tracing deals with lighting, shadows, reflection, etc.
       anti-aliasing in ray-tracing