Introduction - If you have any usage issues, please Google them yourself
Draw graphics using computer programming languages, mainly to achieve the following: (1), the midpoint algorithm to generate random slope line, and set the line width. (2), the midpoint algorithm to generate a round (3), the midpoint algorithm to generate oval (4), scanning polygon fill algorithm (5), Cohen_Sutherland cutting (6), free to draw curves and surfaces (7), two-dimensional graph transformation (8), three view transformation