Questions
Syllabus
Qns. By Syllabus

Semester

Subject

Year

Tribhuwan University

Institute of Science and Technology

2079

Bachelor Level / Second Year / Third Semester / Science

B.Sc in Computer Science and Information Technology (CSC214)

(Computer Graphics)

Full Marks: 60

Pass Marks: 24

Time: 3 Hours

Candidates are required to give their answers in their own words as for as practicable.

The figures in the margin indicate full marks.

Section A

Long Answers Questions

Attempt any TWO questions.
[2*10=20]
1.
Explain the working details of Mid-point circle algorithm? Trace the points along the line path having two end points (6,9) and (2,3) using Bresenham's line drawing algorithm.[10]
2.
Differentiate between object space and image space methods of hidden surface removal. Describe the Z-buffer hidden surface removal algorithm.[10]
3.
Write the algorithm for Cohen-Sutherland Line clipping. Clip the polygon A(100,150), B(200,250) and C(300,200) with the clipping window defined by the coordinates (100,300), (300,300) and (200,100) using Sutherland Hodgeman Polygon Clipping algorithm.[10]
Section B

Short Answers Questions

Attempt any Eight questions.
[8*5=40]
4.
Reflect a line segment having endpoints (9,3) and (12,10) about a line Y=7. Draw initial and final result graph as well. [5]
5.
Differentiate between raster and vector graphics method. [5]
6.
Explain about parametric curve. Describe the properties of Bezier curve. [5]
7.
What are blobby objects? How it is represented? Explain the wireframe representation of 3D objects. [5]
8.
Calculate the total memory required to store a 8 minute video in a SVGA system with 24 bit true color and 25 fps. [5]
9.
Find the composite transformation matrix for reflection about a line y=mx+c. [5]
10.
What is polygon table? Explain the use of this method in 3D object representation. [5]
11.
Define the term 'rendering' in computer graphics. Explain Phong Shading Method with its advantage and disadvantage. [5]
12.
Write short notes on (any two): a. BSP Tree b. Virtual Reality c. Intensity Attenuation [5]