# JNTU Kakinada B-Tech 3-2 RT32032 I INTERACTIVE COMPUTER GRAPHICS R13 April 2018 Question Paper

Code No: RT32032
III B. Tech II Semester Regular/Supplementary Examinations, April -2018
INTERACTIVE COMPUTER GRAPHICS (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) What are the advantages and disadvantages of LCD over faster-scan CRT? [4M]
b) Compare homogeneous coordinated with screen coordinates. [3M]
c) What is the use of View Reference point? [4M]
d) Define Blending Functions. [4M]
e) Define classification. [3M]
f) How animation is used in multimedia? [4M]
PART -B
2 Describe the working methodology of various input devices used for developing
graphics applications.
[16M]
3 a) Describe the midpoint circle generation algorithm. State its advantages and
disadvantages over DDA circle generation algorithm.
[8M]
b) A point (3,5) is rotated anticlockwise by an angle of 45
0
. Find the rotation matrix
and resultant point.
[8M]
4 a) Explain Cyrus-beck line clipping algorithm. [8M]
b) What is the difference between window and viewport? How window-to-viewport
transformation is done?
[8M]
5 a) Explain the Properties of B – spline. How it is differ from Bezier? [8M]
b) How does the depth of a polygon determined by the painter algorithm?
[8M]
6 A solid tetrahedron is given by position vectors A(1,1,1), B(3,1,1), C(2,1,3) and
D(2,2,2) with a point light source is kept at P(2,3,4). Using back face detection
method, find the surfaces on which the light falls and the surfaces which are to be
shaded.
[16M]
7 a) Discuss the important principles behind Computer Animation with suitable diagrams [8M]
b) What is animation? And give its application areas? [8M]
*****
R13
SET – 1

Code No: RT32032
III B. Tech II Semester Regular/Supplementary Examinations, April -2018
INTERACTIVE COMPUTER GRAPHICS (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) What are the advantages and disadvantages of LCD over faster-scan CRT? [4M]
b) Compare homogeneous coordinated with screen coordinates. [3M]
c) What is the use of View Reference point? [4M]
d) Define Blending Functions. [4M]
e) Define classification. [3M]
f) How animation is used in multimedia? [4M]
PART -B
2 Describe the working methodology of various input devices used for developing
graphics applications.
[16M]
3 a) Describe the midpoint circle generation algorithm. State its advantages and
disadvantages over DDA circle generation algorithm.
[8M]
b) A point (3,5) is rotated anticlockwise by an angle of 45
0
. Find the rotation matrix
and resultant point.
[8M]
4 a) Explain Cyrus-beck line clipping algorithm. [8M]
b) What is the difference between window and viewport? How window-to-viewport
transformation is done?
[8M]
5 a) Explain the Properties of B – spline. How it is differ from Bezier? [8M]
b) How does the depth of a polygon determined by the painter algorithm?
[8M]
6 A solid tetrahedron is given by position vectors A(1,1,1), B(3,1,1), C(2,1,3) and
D(2,2,2) with a point light source is kept at P(2,3,4). Using back face detection
method, find the surfaces on which the light falls and the surfaces which are to be
shaded.
[16M]
7 a) Discuss the important principles behind Computer Animation with suitable diagrams [8M]
b) What is animation? And give its application areas? [8M]
*****
R13
SET – 1

Code No: RT32032
III B. Tech II Semester Regular/Supplementary Examinations, April -2018
INTERACTIVE COMPUTER GRAPHICS (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Give the functioning of Display processor. [4M]
b) What are filled area primitives? [3M]
c) How to Map a window to view port? [4M]
d) Explain about diffuse illumination. [4M]
e) What are composite transformations? [3M]
f) Define frame by frame animation. [4M]
PART -B
2 Explain the principle of following video display devices: (i) Cathode Ray Tube. (ii) Liquid Crystal Displays
[16M]
3 Digitize a line from (1, 2) to (12, 18) on a raster screen using Bresenham’s straight line
algorithm. Compare it with line generated using a DDA algorithm
[16M]
4 Explain Sutherland Hodgeman polygon clipping algorithm. List and Explain its
disadvantages and how to rectify them.
[16M]
5 a) Explain how to generate a Bezier Curve using the blending functions. [8M]
b) Give an overview of basic illumination methods.
[8M]
6 Derive the matrix form for the geometric transformations in 3D graphics from the
following operations: i) Translation ii) Scaling iii) Mirror reflection
[16M]
7 a) Design a Storyboard layout and accompanying key frame for an animation of a single
polyhedron.
[8M]
b) Describe various methods of controlling animation. [8M]

*****
R13
SET – 2

Code No: RT32032
III B. Tech II Semester Regular/Supplementary Examinations, April -2018
INTERACTIVE COMPUTER GRAPHICS (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) What are the advantages and disadvantages of LCD over faster-scan CRT? [4M]
b) Compare homogeneous coordinated with screen coordinates. [3M]
c) What is the use of View Reference point? [4M]
d) Define Blending Functions. [4M]
e) Define classification. [3M]
f) How animation is used in multimedia? [4M]
PART -B
2 Describe the working methodology of various input devices used for developing
graphics applications.
[16M]
3 a) Describe the midpoint circle generation algorithm. State its advantages and
disadvantages over DDA circle generation algorithm.
[8M]
b) A point (3,5) is rotated anticlockwise by an angle of 45
0
. Find the rotation matrix
and resultant point.
[8M]
4 a) Explain Cyrus-beck line clipping algorithm. [8M]
b) What is the difference between window and viewport? How window-to-viewport
transformation is done?
[8M]
5 a) Explain the Properties of B – spline. How it is differ from Bezier? [8M]
b) How does the depth of a polygon determined by the painter algorithm?
[8M]
6 A solid tetrahedron is given by position vectors A(1,1,1), B(3,1,1), C(2,1,3) and
D(2,2,2) with a point light source is kept at P(2,3,4). Using back face detection
method, find the surfaces on which the light falls and the surfaces which are to be
shaded.
[16M]
7 a) Discuss the important principles behind Computer Animation with suitable diagrams [8M]
b) What is animation? And give its application areas? [8M]
*****
R13
SET – 1

Code No: RT32032
III B. Tech II Semester Regular/Supplementary Examinations, April -2018
INTERACTIVE COMPUTER GRAPHICS (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Give the functioning of Display processor. [4M]
b) What are filled area primitives? [3M]
c) How to Map a window to view port? [4M]
d) Explain about diffuse illumination. [4M]
e) What are composite transformations? [3M]
f) Define frame by frame animation. [4M]
PART -B
2 Explain the principle of following video display devices: (i) Cathode Ray Tube. (ii) Liquid Crystal Displays
[16M]
3 Digitize a line from (1, 2) to (12, 18) on a raster screen using Bresenham’s straight line
algorithm. Compare it with line generated using a DDA algorithm
[16M]
4 Explain Sutherland Hodgeman polygon clipping algorithm. List and Explain its
disadvantages and how to rectify them.
[16M]
5 a) Explain how to generate a Bezier Curve using the blending functions. [8M]
b) Give an overview of basic illumination methods.
[8M]
6 Derive the matrix form for the geometric transformations in 3D graphics from the
following operations: i) Translation ii) Scaling iii) Mirror reflection
[16M]
7 a) Design a Storyboard layout and accompanying key frame for an animation of a single
polyhedron.
[8M]
b) Describe various methods of controlling animation. [8M]

*****
R13
SET – 2

Code No: RT32032
III B. Tech II Semester Regular/Supplementary Examinations, April -2018
INTERACTIVE COMPUTER GRAPHICS (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Distinguish between Raster and Random Scan display. [4M]
b) Where does overstrike occur When Four way symmetry is used to obtain a full
ellipse from pixel coordinates generated for first quadratic
[3M]
c) List the differences between aliasing and ant aliasing. [4M]
d) What are the properties of a Bezier curve? [4M]
e) Write down the uses of depth sorting algorithm. [3M]
f) List any four animation techniques. [4M]
PART -B
2 a) Explain the role of computer graphics in picture analysis. Give the advantages of
interactive graphics.
[8M]
b) List the important characteristics of video display device.
[8M]
3 a)Distinguish the merits and demerits of scan line and flood fill algorithms.
[8M]
b) With respect to 2D transformations explain Translation, Rotation and Scaling.
[8M]
4 Given a clipping window P (0, 0), Q (340, 0), R (340, 340) and S (0, 340). find the
visible portion of the line AB [(-170, 595), (170, 225)] and CD [(425, 85), (595,
595)] against the given window, using Cohen – Sutherland algorithm, showing all
the steps
[16M]
5 a) What are the three equivalent methods for specifying spline representation?
Describe.
[8M]
b) What is hermite spline and give the boundary condition for hermite curve?
[8M]
6 a) Explain the concept of Depth Buffer algorithm for detecting visual surface of a 3D
object.
[8M]
b) Define Tilting as a rotation about x axis followed by a rotation about y axis. Find the
tilting matrix? Does the order of performing tilting matters.
[8M]
7 a)How to specify Object motion in an animation system?
[8M]
b) List various types of animation languages. Describe various problems associated
with animation.
[8M]
*****
R13
SET – 3

Code No: RT32032
III B. Tech II Semester Regular/Supplementary Examinations, April -2018
INTERACTIVE COMPUTER GRAPHICS (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) What are the advantages and disadvantages of LCD over faster-scan CRT? [4M]
b) Compare homogeneous coordinated with screen coordinates. [3M]
c) What is the use of View Reference point? [4M]
d) Define Blending Functions. [4M]
e) Define classification. [3M]
f) How animation is used in multimedia? [4M]
PART -B
2 Describe the working methodology of various input devices used for developing
graphics applications.
[16M]
3 a) Describe the midpoint circle generation algorithm. State its advantages and
disadvantages over DDA circle generation algorithm.
[8M]
b) A point (3,5) is rotated anticlockwise by an angle of 45
0
. Find the rotation matrix
and resultant point.
[8M]
4 a) Explain Cyrus-beck line clipping algorithm. [8M]
b) What is the difference between window and viewport? How window-to-viewport
transformation is done?
[8M]
5 a) Explain the Properties of B – spline. How it is differ from Bezier? [8M]
b) How does the depth of a polygon determined by the painter algorithm?
[8M]
6 A solid tetrahedron is given by position vectors A(1,1,1), B(3,1,1), C(2,1,3) and
D(2,2,2) with a point light source is kept at P(2,3,4). Using back face detection
method, find the surfaces on which the light falls and the surfaces which are to be
shaded.
[16M]
7 a) Discuss the important principles behind Computer Animation with suitable diagrams [8M]
b) What is animation? And give its application areas? [8M]
*****
R13
SET – 1

Code No: RT32032
III B. Tech II Semester Regular/Supplementary Examinations, April -2018
INTERACTIVE COMPUTER GRAPHICS (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Give the functioning of Display processor. [4M]
b) What are filled area primitives? [3M]
c) How to Map a window to view port? [4M]
d) Explain about diffuse illumination. [4M]
e) What are composite transformations? [3M]
f) Define frame by frame animation. [4M]
PART -B
2 Explain the principle of following video display devices: (i) Cathode Ray Tube. (ii) Liquid Crystal Displays
[16M]
3 Digitize a line from (1, 2) to (12, 18) on a raster screen using Bresenham’s straight line
algorithm. Compare it with line generated using a DDA algorithm
[16M]
4 Explain Sutherland Hodgeman polygon clipping algorithm. List and Explain its
disadvantages and how to rectify them.
[16M]
5 a) Explain how to generate a Bezier Curve using the blending functions. [8M]
b) Give an overview of basic illumination methods.
[8M]
6 Derive the matrix form for the geometric transformations in 3D graphics from the
following operations: i) Translation ii) Scaling iii) Mirror reflection
[16M]
7 a) Design a Storyboard layout and accompanying key frame for an animation of a single
polyhedron.
[8M]
b) Describe various methods of controlling animation. [8M]

*****
R13
SET – 2

Code No: RT32032
III B. Tech II Semester Regular/Supplementary Examinations, April -2018
INTERACTIVE COMPUTER GRAPHICS (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Distinguish between Raster and Random Scan display. [4M]
b) Where does overstrike occur When Four way symmetry is used to obtain a full
ellipse from pixel coordinates generated for first quadratic
[3M]
c) List the differences between aliasing and ant aliasing. [4M]
d) What are the properties of a Bezier curve? [4M]
e) Write down the uses of depth sorting algorithm. [3M]
f) List any four animation techniques. [4M]
PART -B
2 a) Explain the role of computer graphics in picture analysis. Give the advantages of
interactive graphics.
[8M]
b) List the important characteristics of video display device.
[8M]
3 a)Distinguish the merits and demerits of scan line and flood fill algorithms.
[8M]
b) With respect to 2D transformations explain Translation, Rotation and Scaling.
[8M]
4 Given a clipping window P (0, 0), Q (340, 0), R (340, 340) and S (0, 340). find the
visible portion of the line AB [(-170, 595), (170, 225)] and CD [(425, 85), (595,
595)] against the given window, using Cohen – Sutherland algorithm, showing all
the steps
[16M]
5 a) What are the three equivalent methods for specifying spline representation?
Describe.
[8M]
b) What is hermite spline and give the boundary condition for hermite curve?
[8M]
6 a) Explain the concept of Depth Buffer algorithm for detecting visual surface of a 3D
object.
[8M]
b) Define Tilting as a rotation about x axis followed by a rotation about y axis. Find the
tilting matrix? Does the order of performing tilting matters.
[8M]
7 a)How to specify Object motion in an animation system?
[8M]
b) List various types of animation languages. Describe various problems associated
with animation.
[8M]
*****
R13
SET – 3

Code No: RT32032
III B. Tech II Semester Regular/Supplementary Examinations, April -2018
INTERACTIVE COMPUTER GRAPHICS (Mechanical Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) What are the merits and demerits of plasma panel display? [4M]
b) Define shear transformations and give its matrix form. [3M]
c) Why there is a need for clipping? [4M]
d) Distinguish Clipping and Culling. [4M]
e) Discuss how wireframe displays might be generated with the
various visible surface detection methods.
[3M]
f) List the differences between conventional and computer assisted animation. [4M]
PART -B
2 a) Describe the working principle and applications of faster scan display devices. [8M]
b) What is the role of workstation in computer graphics? List various essential input
devices.
[8M]
3 Explain midpoint circle algorithm. Given a circle radius r=10,
demonstrate the midpoint circle algorithm by determining positions
along the circle octant in the first quadrant from x=10 to x=y.
[16M]
4 a) What is the need of homogeneous coordinates? Give the homogenous coordinates
for translation, rotation, and scaling
[8M]
b) Develop the transformation for finding the reflection of a point w.r.t the line
ax+by+c=0.
[8M]
5 Derive the 3D transformation matrix to transform world coordinates to view
coordinates.
[16M]
6 Determine the Bezier blending functions for five control points. Plot
each function and label the maximum and minimum values.
[16M]
7 a) Explain various steps in designing animation sequence. [8M]
b) What is an animation? Give basic rules of animation. [8M]
*****
R13
SET – 4

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