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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
MCA SEMESTER-IV • EXAMINATION SUMMER 2017
Subject Code: 640008 Date:08/06/2017
Subject Name: Computer Graphics
Time: 10.30 AM TO 01.00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

Explain the following terms.
Resolution
Morphing
Aspect Ratio
Refresh Buffer
Rigid Body Transformation
Surface Rendering
Viewport
Vanishing Point
08

Differentiate following:
Track Ball and Space Ball
Absolute coordinate and Relative coordinate
Bitmap and Pixmap
06
Q.2

List and explain various application areas of Computer Graphics.
07

Differentiate between random scan display and raster scan display. Which is better and why?
07
OR

What is flat panel display? Describe its categories and explain any one.
07
Q.3

Explain Bresenham's line generating algorithm. What are its advantages over DDA?
07

Explain any seven OpenGL Functions for output primitives.
07
OR
Q.3

State Midpoint Circle Algorithm and explain in brief.
07

Compare matrix and homogeneous coordinate representation for 2-D translation, rotation and scaling.
07
Q.4

Explain boundary fill algorithm. How it is differ from flood fill algorithm?
07

What is reflection? Explain reflection about x-axis, y-axis, line y=x taking suitable example.
07
OR
Q.4

Explain antialiasing. List different antialiasing methods. Explain any two methods.
07

Explain concave and convex polygon. Specify the method for converting concave to convex polygon using example.
07
Q.5

What is polygon clipping? Explain Sutherland-Hodgeman Polygon Clipping
Algorithm.
07

Explain Parallel Projection and perspective Projection in detail.
07
OR
Q.5

Explain Cohen-Sutherland line clipping algorithm.
07

Write detailed note on 3D viewing pipeline.
07