C#实现的简易的CAD

对开发CAD很有帮助

using System;

namespace LitCAD.DatabaseServices
{
    /// 

    /// 矩形包围框
    /// 

    public struct Bounding
    {
        /// 

        /// Center
        /// 

        public LitMath.Vector2 center
        {
            get
            { 
                return new LitMath.Vector2（
                    （_left + _right） / 2
                    （_bottom + _top） / 2）; 
            }
        }

        /// 

        /// Width
        /// 

        private double _width;
        public double width
        {
            get { return _width; }
            //set { _width = value; }
        }

        /// 

        /// Height
        /// 

        private double _height;
        public double height
        {
            get 

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2020-01-10 14:14  LitCAD-master\
     文件        4832  2020-01-10 14:14  LitCAD-master\.gitignore
     文件        1067  2020-01-10 14:14  LitCAD-master\LICENSE
     文件        1704  2020-01-10 14:14  LitCAD-master\README.md
     目录           0  2020-01-10 14:14  LitCAD-master\doc\
     文件         184  2020-01-10 14:14  LitCAD-master\doc\LitCAD.txt
     目录           0  2020-01-10 14:14  LitCAD-master\doc\images\
     文件       96440  2020-01-10 14:14  LitCAD-master\doc\images\litcad.png
     目录           0  2020-01-10 14:14  LitCAD-master\src\
     目录           0  2020-01-10 14:14  LitCAD-master\src\3rdlib\
     文件       25600  2020-01-10 14:14  LitCAD-master\src\3rdlib\LitMath.dll
     文件        3433  2020-01-10 14:14  LitCAD-master\src\LitCAD.sln
     目录           0  2020-01-10 14:14  LitCAD-master\src\LitCAD\
     目录           0  2020-01-10 14:14  LitCAD-master\src\LitCAD\ApplicationServices\
     文件        2766  2020-01-10 14:14  LitCAD-master\src\LitCAD\ApplicationServices\CommonColors.cs
     文件        4146  2020-01-10 14:14  LitCAD-master\src\LitCAD\ApplicationServices\Document.cs
     文件         679  2020-01-10 14:14  LitCAD-master\src\LitCAD\ApplicationServices\Selection.cs
     文件        4699  2020-01-10 14:14  LitCAD-master\src\LitCAD\ApplicationServices\Selections.cs
     目录           0  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\
     文件        4988  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\Command.cs
     文件         962  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\CommandNames.cs
     文件        2802  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\CommandsFactory.cs
     文件        5332  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\CommandsMgr.cs
     目录           0  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\Draw\
     文件        5009  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\Draw\ArcCmd.cs
     文件        2839  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\Draw\CircleCmd.cs
     文件        6687  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\Draw\LinesChainCmd.cs
     文件        7595  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\Draw\PolygonCmd.cs
     文件        3869  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\Draw\PolylineCmd.cs
     文件        7596  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\Draw\RayCmd.cs
     文件        3507  2020-01-10 14:14  LitCAD-master\src\LitCAD\Commands\Draw\RectangleCmd.cs
............此处省略193个文件信息