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TEST 1 - CS458 
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Instructor Dr P Juell                   NAME_______________________ 
OPEN BOOK                                        Sep 23, 1998
100 points         
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1. (10)
Why would you like a grey scale monitor even if the images
are strictly of black and white items.
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2. (16)
Draw graphs to show what the following sequence of transformations
would do.
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S(2) T(5,2) R(90 ) T(-2, -3)
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3. (14)
Define the data (in vtk format) to describe a half of a cube.
That is the part from the origin to points (1,0,1) (1,1,0) and (0,1,1).
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4. (20)
Give two strengths (or benefits) in using a standard such as GKS.
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Give problems or weakness in using a standard such as GKS.
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5. (10)
Bresenhan's line algorithm uses the sign of the parametric value
to chose between two options.
What are the two options?
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6. (16)
Assume a viewport with endpoints (1,1),(1,3),(3,3),(3,1).
For two lines (a (0,2) to (2,2)) and b (0,4) (4,4).
Give the clipping bits for each end line and what this means for 
each line.
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7. (14) 
What is the odd-even rule for area filling?