Computer Graphics & Animation Question Bank

 Semester Final Examination: October 2025

Course Code: CSE 4707, Course Title: Computer Graphics & Animation

1.	a)	Define  interactive computer graphics.Write four difference between interactive and non-interactive graphics.	[1+2]
	b)	Briefly describe the graphics pipeline. Differentiate between CPU and GPU in terms of cores, speed, and tasks.	[3+3]
	c)	Write short note on - i) Frame Buffer ii) PPI.	[1x2]
	d)	State aspect ratio. Find the aspect ratio of a display with resolution 2560×1440.	[1+2]
2.	a)	Illustrate how vector scan display’s architecture works	[4]
	b)	A display screen has a resolution of 1920×1080 pixels with 24-bit color depth. Calculate the total number of pixels.Find the memory required to store one frame (uncompressed).	[5]
	c)	A monitor has size 15.6 inches with resolution 1920×1080. Calculate the PPI. Compare it with a 24-inch monitor having the same resolution. Explain how the same image will appear different on these two screens.	[5]
3.	a)	Define scan conversion. Why is it needed in computer graphics?	[1+2]
	b)	Apply Bresenham’s Line Drawing Algorithm to plot a line between (3,2) and (17,5). Show decision parameter values at each step.	[7]
	c)	Write the steps of defining a circle using Polynomial Method Algorithm.	[4]
4.	a)	Interpret seed fill algorithm and list the types of seed fill algorithm. Illustrate boundary fill algorithm for and its steps for    4-connected and 8-connected.	[2+5]
	b)	A circle is centered at (0,0) with radius = 10. Use Midpoint Circle Algorithm to find the first 8 points plotted.	[7]
5.	a)	Illustrate geometric transformation and coordinate transformation with one example of each. Explain the advantage of using homogeneous coordinates in computer graphics?.	[3+2]
	b)	Interpret Translation. Consider a square with vertices A(0,0), B(2,0), C(2,2), D(0,2). (a) Translate it by Tx = 3, Ty = 2. (b) Then rotate it by 90° anticlockwise about the origin. (c) Finally scale it by factor Sx = 2, Sy = 1. Find the final coordinates of all vertices after applying the composite transformation.	[1+8]
6.	a)	Illustrate window and viewport in computer graphics. Consider a window with coordinates Xwmin = 2, Ywmin = 2, Xwmax = 8, Ywmax = 6 and a viewport with coordinates Xvmin = 100, Yvmin = 100, Xvmax = 300, Yvmax = 200.   Find the viewport coordinates of a point (5, 4) using window-to-viewport transformation.	[1+4]
	b)	State distortion in 2D viewing and how is it caused.Write an algorithm to clip a line using Cohen-Sutherland method. Apply it to a line (x1, y1) = (2,7) to (x2, y2) = (10,3) for a clipping window (3,3) to (8,6). Show steps and final clipped coordinates.	[1+8]
7.	a)	Define projection. Illustrate the taxonomy of projection.	[1+2]
	b)	State the shading in computer graphics. Write short note on - i) Diffuse Shading ii) Ambient Shading	[1+4]
	c)	Using Bresenham’s Circle Drawing Algorithm, generate the points for a circle of radius 5 centered at the origin. Show step-by-step decision parameter updates.	[6]