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Questions and Answers
What is the midpoint algorithm used for?
What is the midpoint algorithm used for?
- Rasterizing circles on a computer screen.
- Rasterizing lines on a computer screen. (correct)
- Rasterizing polygons on a computer screen.
- Rasterizing images on a computer screen.
What does the midpoint algorithm assume about the line being rasterized?
What does the midpoint algorithm assume about the line being rasterized?
- It has a negative slope
- It has a positive slope (correct)
- It has a zero slope
- It is a curved line
What is a key advantage of the midpoint algorithm?
What is a key advantage of the midpoint algorithm?
- It uses floating-point calculations for increased accuracy.
- It can only be used for lines with positive slopes.
- It is inefficient and requires complex calculations.
- It uses only integer arithmetic and is efficient. (correct)
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Study Notes
- The midpoint algorithm is for rasterizing lines on a computer screen.
- It calculates the coordinates of pixels the line intersects.
- It assumes the line has a positive slope.
- It can be modified for lines with negative slopes.
- The algorithm calculates the difference in x and y coordinates.
- It initializes the decision parameter d.
- It draws the first pixel and sets the current x and y coordinates.
- It updates the decision parameter d for each pixel along the line.
- It uses only integer arithmetic and avoids floating-point calculations.
- The algorithm is efficient and can be implemented using simple integer operations.
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