CAD鼠标泡泡

参考鸿视频，效果如下：

using Autodesk.AutoCAD.Internal;
using System.Drawing;
using System.Drawing.Imaging;
using System.Threading;
using Color = Autodesk.AutoCAD.Colors.Color;
namespace IfoxDemo
{
    public class Class1
    {
        static TransientManager tm = TransientManager.CurrentTransientManager;
        static System.Windows.Forms.Timer timer;
        static Random rand;
        static bool isrun;
        Point3d mpt;
        double viewheight;
        List<Pao> paos;
        int k;
        Document doc;
        Editor ed;
        DocumentLock dl;
        [CommandMethod("xx")]
        public void run()
        {
            if (!isrun)
            {
                isrun = true;
                timer = new System.Windows.Forms.Timer();
                rand = new Random();
                paos = new List<Pao>();
                doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
                ed = doc.Editor;
                dl = doc.LockDocument();
                viewheight = GetViewHeight();
                timer.Interval = 1;
                ed.PointMonitor += Ed_PointMonitor;
                doc.ViewChanged += Doc_ViewChanged;
                timer.Tick += 气泡产生事件;
                timer.Tick += 气泡膨胀事件;
                doc.BeginDocumentClose += Doc_BeginDocumentClose;
                timer.Start();
            }
            else
            {
                isrun = false;
                timer.Tick -= 气泡产生事件;
                timer.Tick -= 气泡膨胀事件;
                ed.PointMonitor -= Ed_PointMonitor;
                doc.ViewChanged -= Doc_ViewChanged;
                //paos.ForEach(pao => 
                //{
                //    tm.EraseTransient(pao.cir, new IntegerCollection());
                //});//等效写法
                paos.ForEach(pao => tm.EraseTransient(pao.cir, new IntegerCollection()));
                paos.Clear();
                dl.Dispose();
            }
        }
        private void Doc_BeginDocumentClose(object sender, DocumentBeginCloseEventArgs e)
        {
            if (isrun)
            {
                isrun = false;
                timer.Tick -= 气泡产生事件;
                timer.Tick -= 气泡膨胀事件;
                ed.PointMonitor -= Ed_PointMonitor;
                doc.ViewChanged -= Doc_ViewChanged;
                //paos.ForEach(pao => 
                //{
                //    tm.EraseTransient(pao.cir, new IntegerCollection());
                //});//等效写法
                paos.ForEach(pao => tm.EraseTransient(pao.cir, new IntegerCollection()));
                paos.Clear();
                dl.Dispose();
            }
        }
        private void 气泡膨胀事件(object sender, EventArgs e)
        {
            foreach (var pao in paos)
            {
                pao.膨胀(mpt, viewheight);
            }
            for (int i = paos.Count - 1; i >= 0; i--)
            {
                if (paos[i].bao) paos.RemoveAt(i);
            }
            ed.UpdateScreen();
            System.Windows.Forms.Application.DoEvents();
        }
        private void 气泡产生事件(object sender, EventArgs e)
        {
            k++;
            int t = rand.Next(5, 100);//设置两个值的大小，可控制产生气泡的速度
            if (k > t)
            {
                double ang = rand.NextDouble() * Math.PI * 2;
                Color cc = ((double)rand.Next(100)).Rainbow紫到蓝(0, 100);
                paos.Add(new Pao(viewheight, mpt, cc, ang));
                k = 0;
            }
        }
        private void Doc_ViewChanged(object sender, EventArgs e)
        {
            viewheight = GetViewHeight();
        }
        private void Ed_PointMonitor(object sender, PointMonitorEventArgs e)
        {
            mpt = e.Context.RawPoint;
        }
        double GetViewHeight()
        {
            return ed.GetCurrentView().Height;
        }
        public class Pao
        {
            public Circle cir;
            double rmin, rmax, ang;
            int tt;
            public bool bao;
            public Pao(double viewheight, Point3d cent, Color cc, double ang)
            {
                rmin = viewheight / 200;
                rmax = viewheight / 50;
                cir = new Circle(cent, Vector3d.ZAxis, rmin);
                cir.Color = cc;
                this.ang = ang;
                tm.AddTransient(cir, TransientDrawingMode.Main, 0, new IntegerCollection());
            }
            public void 膨胀(Point3d pt, double viewheight)
            {
                rmin = viewheight / 200;
                rmax = viewheight / 50;
                double dt = (rmax - rmin) / 100;
                cir.Center = pt.Polar(ang, dt * tt * 5);
                cir.Radius = rmin + dt * tt;
                tm.UpdateTransient(cir, new IntegerCollection());
                tt++;
                if (tt > 100)
                {
                    tm.EraseTransient(cir, new IntegerCollection());
                    bao = true;
                }

            }
        }
    }
}
    

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace IfoxDemo
{
    public static class MRainbow
    {
        public static Color Rainbow紫到蓝(this double a, double min, double max)
        {
            if (min > max) { double v = min; min = max; max = v; }
            if (a > max) a = max; if (a < min) a = min;
            double step = a - min;
            double num = max - min;
            double r = 0.0; double g = 0.0; double b = 0.0;
            double h = step / num;
            double i = (int)(h * 5);
            double f = h * 5.0 - i;
            double q = 1 - f;
            switch (i % 5)
            {
                case 3: r = 1; g = q; b = 0; break;//红色到黄色
                case 2: r = f; g = 1; b = 0; break;//黄色到绿色
                case 0: r = 0; g = f; b = 1; break;//绿到蓝
                case 1: r = 0; g = 1; b = q; break;
                case 4: r = 1; g = 0; b = f; break;
            }
            return Color.FromRgb((byte)(r * 255), (byte)(g * 255), (byte)(b * 255));
        }
    }
}