Unit
5
1.a) Distinguish between boundary
representation and space-partitioning representation of solid object
representation schemes.
b) List and describe the polygon tables
representation for polygon surfaces of a 3-D object . Give an example
2. Describe beizer surface generation
technique with examples.
3.explain about a)gourmand shading b)write a note on phong shading
4.a)what are the advantages of b-splines
over Bezier curves?
b) Differentiate between interpolation and
approximation in spline representations.
5.Given the plane parameters A,B,C and D
for all surfaces of an object,explain the procedure to determine whether any
specified point is inside or outside the object.
Unit
6
1. Explain the method to derive the
transformation matrix for rotation an object about any arbitrary axis.
2. Write about 3d viewing pipeline.Describe
about view View Volumes
3.write 3d clipping for parallel and
perspective projections.
4. a) Write about 3d viewing
transformations
b)
write the 3d homogeneous transformation matrix for each of the following
transformation
i)shift
0.5 in X, 2.0 in Y and -2.0 in Z
ii)
Rotate by pie/4 about Xaxis
5.a)Explain the perspective projection for
projecting 3d objects on a 2s view surface.
b)
Write a procedure for rotating a given object about any specified rotation
axis.
Unit
7
1.
Write an algorithm to display
the visible surfaces of a convex polyhedron using the depth sort(Painter’s)
algorithm?
2.
Outline the z-buffer algorithm
.List the advantage and disadvantages of the z-buffer algorithm.
3.
A) explain the basic concepts of hidden
surfaces and line removal methods with suitable examples.
b) Write about z-buffers.
4. A) distinguish between object-space and
image space methods of visible surface
detection algorithms. Give examples for each
b) Explain how the visible surfaces of a
polyhedron are determined using BSP-tree method
5. A) write an algorithm to implement
scan-line algorithm for displaying visible surfaces of a given polyhedron
B) Explain how the coherence property is
used to evaluate points along and between scanlines.
Unit
8
1. what are the issues involved in design
of a story board layout with accompanying key frames for an animation of a
single polyhedron.
2. Describe in detail about the methods of
controlling animation.
3. A) List and explain about the steps of
animation
B)
Animation Functions
4. Describe about Motion Specifications
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