Fall 2016 Computer Graphics Question

This is the question set along with answers of Computer Graphics Fall 2016, which was taken by the Pokhara University.

Pokhara University – Programming Language Fall 2016

Attempt all the questions.

1.  (a) Define Computer Graphics. How is it used in different fields? Explain in brief.
   (b)Compare and contrast the Raster scan system and Random scan system with neat architectural diagram.
2. a) What types of graphical accessories used to handle computer graphics? Explain any two latest graphical devices.
   b) Explain DDA Line algorithm. Computer DDA with BLA.
3. (a) Why is it possible to draw circle by calculating only the values of one octant? Write the algorithm for drawing circle using mid-point concept.
   (b) What is scaling? Scale a triangle with vertices A(0,0), B(1,1), C(5,2) to double of its size with reference to origin then rotate that square in anti-clock wise about the origin by 900 ..
4. a) Define the term projection. What do you understand by parallel projection? Derive a necessary derivation for parallel projection.
   b) Explain different types of color Model?
5. a) Define clipping. Explain the Cohen-Sutherland line clipping algorithm with diagram.
   b) What do you mean by visible surface detection method? Describe Z-buffer method.
6. a) Why is portable and machine independence graphical software required? Classify graphical software and explain any one with examples.
   b) What is a project? Explain the roles of project team members in brief.
7. Write short note onany two:
   a) Graphical File Formats
   b) Project Development Life Cycle
   c) Types of parallel projections