Computer graphics —— Raster graphics

Function

Draw anti-aliased lines with or without Bresenham Algorithm and draw curves.

Using

Draw line: ./main x0 y0 x1 y1

((x0, y0), (x1, y1) are two points of a line, show with or without anti-aliasing simultaneously)

Draw Circle: ./main x0 y0 r

((x0, y0) is the center of the circle, r is its radius)

Example

Draw line(without anti-aliasing): ./main 10 20 200 100

Draw line(with anti-aliasing, gaussian kernel):

Draw line(with anti-aliasing, uniform kernel):

Draw circle: ./main 50 50 20

Summary

Without anti-aliasing result line is jagged, after anti-aliasing it becomes smooth. The effect of gaussian kernel and uniform kernel is same. The size of kernel in the example is 3.

Outlook