CS250 Final Exam
1.
True
or
False
: If the X and Yaxes of a righthanded Cartesian coordinate system are
oriented in directions (1,0,0) and (0,1,0), respectively, the Zaxis is oriented in direction
(0,0,1).
2.
True
or
False
: Arbitrary combinations of
rotation
,
scale
, and translation transforms
represent affine transforms.
3.
True
or
False
: Arbitrary combinations of rotation,
scale
, and translation transforms
represent rigid body transforms.
4.
True
or
False
: One effect of using perspective projection transform is that the computed
NDC frame depth value varies linearly with input view frame y value.
5.
True
or
False
: One effect of using depthbuffer (DB) algorithm is that polygons can be
rendered in any order.
6.
True
or
False
: One effect of using orthographic projection transform is that the computed
NDC frame depth value does not vary linearly with input view frame y value.
7.
True
or
False
: In the threedimensional viewing pipeline, one clips objects to the view
volume before applying the perspective projection transform to the object.
8.
Given that one of the reasons for the popularity of the depthbuffer (DB) algorithm is that
polygons can be rendered in any order, which of the following statements is correct:
a.
DB algorithm is
more
optimal is polygons are rasterized in a
backtofront
order.
b.
DB algorithm is
more
optimal if polygons are rasterized in a
fronttoback
order.
c.
None of the above.
9.
The
best
solution to improve screen space depth resolution in a threedimensional
graphics pipe is to move the
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 Spring '07
 Ghali
 Linear Algebra, Euclidean geometry, reference frame, view frame

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