Introduction - If you have any usage issues, please Google them yourself
Basic graphics generation and fill VC source. Realized: 1 point and line generation algorithm (numerical differentiation (DDA algorithm), the dotted line method, Bresenham line drawing method). 2, circle generation algorithm (midpoint circle algorithm, Bresenham circle algorithm). 3, oval-generation algorithm. 4, area fill (seed filling algorithm, scan-line fill algorithm). 5, the Chinese characters display technology. 6, curve generation (least-squares fitting a straight line, cubic Bezier line generation, Bezier line to generate any number of times).