Computer Graphics

341. Which method are used to construct and position the straight lines, arcs and circles, etcs

1. Rubber band method
2. Gravity field
3. Dragging
4. None of these

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342. Which method are used to get and set the position of a pixel, object or text in active area of a desktop

1. Drugging method
2. Basic positioning method
3. Sketching method
4. Gravity field method

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343. Which one is the basic input device in GUI

1. Mouse
2. Graphics tablet
3. Voice system
4. Touch panel

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344. Which quad tree defines a partition of space in two dimension by dividing the region into four equal quadrants, sub quadrants and so on

1. Curves quad tree
2. Areas quad tree
3. Region quad tree
4. None

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345. Which surface algorithm is based on perspective depth

1. Depth comparison
2. Z-buffer or depth-buffer algorithm
3. subdivision method
4. back-face removal

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346. Which technique of color CRT is used for production of realistic image

1. Shadow mask method
2. Beam penetration method
3. Both a & b
4. None of these

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347. Which things are mainly needed to make a polygon and to enter the polygon into display file

1. No of sides of polygon
2. Vertices points
3. Both a & b
4. None of these

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348. Which type of quad tree can be defined as an adaptation of a binary tree represented two dimensional point data

1. Point quad tree
2. Edge quad tree
3. Curves quad tree
4. Areas quad tree

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349. Which type of quad tree is specifically used to store lines rather than points

1. Point quad tree
2. Edge quad tree
3. Curves quad tree
4. Areas quad tree

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350. Why we need removal of hidden surface

1. for displaying realistic view
2. for determining the closest visible surface
3. Both a & b
4. None of these

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