CSC 240: Final Quiz Grading Rubric

Part 1: (25pts)

(a) 15 - correct viewpoint, labels, axis, frustum; correct similar triangles math and result
    13 - small math error or correct work but wrong conclusion
    10 - correct analysis of y-coordinate of P but no analysis of x, or some mix up of x and y
     4 - some diagram and start of a correct solution
(b) 10 - correct coordinates and drawing for both cases
     6 - only perspective correct or significant progress on both cases
     4 - only orthographic correct or some progress on both cases

Part 2: (20pts)

(a) 10 - color correct for all points
     8 - minor error (some points incorrect or colors “flipped”)
     5 - major error (several points incorrect or inconsistent)
(b) 10 - all points labeled correctly and “perpendicular point” (P4) shown clearly
     8 - minor error (one point mislabeled or some points shifted
     5 - major error (labels of points “flipped” or inconsistent)

Part 3: (20pts)

(a) 5 - tree completely correct and labeled with push/pop
    3 - minor conceptual error in tree structure
    1 - progress toward a correct solution
(b) 5 - all objects have correct transformations and order
    3 - minor conceptual error (either more or less transformations)
    1 - progress toward a correct solution
(c) 5 - all objects with correct shape, location, and orientation
    3 - minor error in either location, shape, or orientation
    1 - a diagram on the right track
(d) 5 - motion of all objects correctly described, and their relationships
    3 - minor error (typically that 1/2 were rotating around 3, but little
        description of how 1/2 were moving relative to each other)
    1 - some description of correct motion

Part 4: (10pts)

10 - correct analysis of the problem and description of how to fix it
 8 - correct analysis of the problem but orientation error in the fix
 2 - identified an incorrect issue

Part 5: (25pts)

(a)  5 - correct camera location (with work)
     3 - minor conceptual error in how to get the camera location, but close
     1 - some progress toward a correct solution
(b) 10 - correct t and P (with work), or correct based on an incorrect camera position
     8 - minor conceptual error in work, but right idea of how to get t and P
     5 - either P or t correct
     2 - progress toward a correct solution
(c)  5 - correct reasoning and result (does not intersect mirror)
     3 - minor conceptual error in either reasoning or result
     1 - progress toward a correct solution
(d)  5 - both a description of how to get P and a correct inequality for inside/outside
     3 - minor conceptual error or partially incomplete solution
     1 - some correct reasoning or steps of the algorithm