IMG_20171024_132405.jpg - Please write your Exam Roll No Exam Roll No END TERM EXAMINATION Paper Code MCA 203 THIRD SEMESTER[MCA DECEMBER 2013 Time 3

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Unformatted text preview: Please write your Exam Roll No.) Exam Roll No. END TERM EXAMINATION Paper Code: MCA 203 THIRD SEMESTER [MCA] DECEMBER 2013 Time: 3 Hours Subject: Computer Graphics Maximum Marks:60 Note: Attempt any five questions, Including Q.no. 1 is compulsory. Select one question from each unit. Answer following questions. a) Define the terms Translation and scaling in three dimensional with their 2 x 10 matrices. b) What are principal vanishing points? c) Is there any difference between windowing and view port? Answer with justification. d) Explain the relevance of Computer Graphics in Information Technology, List five applications of Computer Graphics. f) Explain the way a LCD screen functions. How the colour is shown on the screen? g) Explain the purpose of BSP-Tree. h) Differentiate between boundary defined and interior defined regions in filling. i) Why is homogeneous coordinates used for transformation computations in CG? j) What do you mean by Constructive Solid Geometry? UNIT-I (a) Digitize the line from (12, 16) to (1, 24) by using bresenham's line drawing |5 algorithm. (b) How Bresenham's algorithm could be used to draw. Explain step-by-step 5 formulation. OR (a) Differentiate between window and view port. How the view port helps in mapping a large size graph on a comparatively smaller screen. u (b) Find a rotation matrix to rotate the point (1, 2, 3) by 45 around origin in x-y Plane. Find transformed value of the point also UNIT-II (a) What is Bezier curve? Discuss three main limitations of a Bezier curve. (b ) Define knot vector and explain the concept used to define a Bezier curve. Compute coefficients of Bezier curve in the interval [1,3] OR 5 (a) Prove that the open uniform B-spline curve for n-2, k-5is the cubic BEzier curve. 5 (b) Four control points PO (a, b), PI (3, 6), P2 (5, 5) and P3 (8, c) are on a uniform quadratic B-spline. Determine th values of a, b and c if the curve starts from the point (1, 4) and terminates with the slope (-0.5). P.T....
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