一维镂垫 二维镂垫 分形山 基于海龟绘图系统二维镂垫-Lou Lou pad one-dimensional two-dimensional fractal mountain pad drawing system based on two-dimensional Lou mat turtle

绘图板软件，实现了文件打开，矢量保存，各种线和图形的绘画，颜色的更换。-it is a paint pad,you can use it to change your color,your paint,and can save yours.