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# MCQ | Window to Viewport Transformation in Computer Graphics

Multiple choice questions and answers (MCQ) based on the Window to Viewport Transformation in computer graphics with 4 choices, correct answer and explanation.
Submitted by Monika Sharma, on October 13, 2020

Question 1: Which of the following ports resembles the coordinates from the real-world system?

1. Window port
2. View Port
3. Universal Port
4. None of the above

Explanation:

A world coordinate area selected for display is called a window port. A window defines a rectangular area in the world coordinates.

Question 2: The process of transforming a 2D world-coordinate object to device coordinates is termed as:

1. Window to Viewport Transformation
2. Viewing Transformation
3. Windowing Transformation
4. All of the above

Answer: d. All of the above

Explanation:

The process of mapping the window port to view port is termed as 'Window to view port Transformation'. It is also known as 'Viewing Transformation' or 'Windowing Transformation'.

Question 3: Can we represent multiple scenes from a real-world coordinate system on the viewport? If yes, how?

1. By using multiple viewports
2. By using multiple window ports
3. Both a. and b.
4. No, we cannot represent multiple scenes from a real-world coordinate system on the viewport

Answer: a. By using multiple viewports

Explanation:

To display different sections of the scene, we use multiple viewports so that different sections can be displayed on different parts of the screen.

Question 4: Which of the following are true with respect to the Window Port in computer graphics?

1. It represents real world coordinate system.
2. A window port can be defined with the help of a GWINDOW statement.
3. Window port is the coordinate area specially selected for the display.
4. All of the above

Answer: d. All of the above.

Explanation:

All the given statements are true according to the window port in computer graphics.

Question 5: "The viewport is an area expressed in rendering device specific coordinates, e.g. pixels for screen coordinates, in which the objects of interest are going to be rendered."
Based upon the above statement, determine whether it is true or false.

1. True
2. False

Explanation:

A viewport is a polygon viewing region in computer graphics which represents our device's screen. Hence, the given statement is true.

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