1. PUZZLE 12/17/2015 A.Aruna/Assistant professor/IT/SNSCE 1

2. Fallen Phrase Puzzle 1 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 2

3. Solution 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 3  A quadtree is a data structure that recursively subdivides a plane into 4 quadrants

4. Fallen Phrase Puzzle 2 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 4

5. Solution 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 5  The distance from one pixel to the next pixel is called Resolution

6. Fallen Phrase Puzzle 3 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 6

7. Solution 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 7  The technique used to summarize the financial, statistical, mathematical, scientific and economic data is Presentation Graphics

8. Letter Tiles 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 8 Unscramble the tiles to reveal a message

9. 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 9  Solution : Coordinates of window are knows as world coordinates

10. Double Puzzle 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 10

11. Solution  Back-Face Detection  Depth-Buffer Method  A-Buffer Method  Scan-Line Method  Depth-Sorting Method  BSP-Tree Method  Area-Subdivision Method  Octree Method  Ray-Casting Method  Curved Surfaces  Wireframe Methods 12/17/2015 11 A.Aruna/Assistant professor/IT/SNSCE Visible surface identification

12. Multiple Choice question 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 12 1. A.................. is a data structure that recursively subdivides a plane into 4 quadrants a)Octree b)4-way tree c) quadtree d) 4-way mesh Solution : c 2. Identify the methods for Constructive Solid Geometry operations a) Ray casting b) Ray tracing c) Beam penetraion d) Ray sorting Solution : a

13. 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 13 3. The surfaces that is blocked or hidden from view in a 3D scene are known as  Hidden surface  Frame buffer  Quad tree  None of these Solution : Hidden surface

14. 12/17/2015A.Aruna/Assistant professor/IT/SNSCE 14 4. The problem of hidden surface are  Removal of hidden surface  Identification of hidden surface  Both a & b  None of these  Solution : c