Question

Explain circle and ellipse generation algorithms.

Answer 1

Algorithm to draw circles and ellipses. ... The algorithm starts with theta at zero, and then loops adding an increment to theta each time round the loop. It draws straight line segments between these successive points on the circle. The circle is thus drawn as a series of straight lines.
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Answer 2

Answer:

Answer:

90° to 45°. Assume that the last scan-converted pixel is P1 as shown in fig. Each new point closest to the true circle can be found by taking either of two actions.

Explanation:

Scan-Converting a circle using Bresenham's algorithm works as follows: Points are generated from 90° to 45°, moves will be made only in the +x & -y directions as shown in fig:

Bresenham's Circle Algorithm

The best approximation of the true circle will be described by those pixels in the raster that falls the least distance from the true circle. We want to generate the points from