winform绘制PLC串联并联模块demo
这是我个人实现的plc串联并联模块绘制的功能案例，模仿可视化配置PLC功能。能够实现模块绘制以及各模块自适应显示功能。
namespace PLCTest { public partial class Form1 : Form { private ListstartPointList = new List (); private List plcList = new List (); public Form1() { InitializeComponent(); } private void Form1_MouseDown(object sender, MouseEventArgs e)//点击鼠标，开始绘制 { if (e.Button == MouseButtons.Left) { startPointList.Add(e.Location); PLCShow plc = new PLCShow(plcList, startPointList); plcList.Add(plc); this.Invalidate(); } } private void Form1_Paint(object sender, PaintEventArgs e) { for (int i = 0; i < startPointList.Count; i++) { plcList[i].DrawPLC(e.Graphics, startPointList[i], this); } } private void Button1_Click(object sender, EventArgs e)//撤销绘制功能 { if (plcList.Count > 0) { plcList.RemoveAt(plcList.Count - 1); startPointList.RemoveAt(startPointList.Count - 1); } this.Invalidate(); } } public class PLCShow { public List ptList = new List (); private List startPointList; private List plcList; private bool isSpecial = false; //public bool isChanged = false; private bool isChangeOther = false; public PLCShow(List plcList,List startPointList) { this.plcList = plcList; this.startPointList = startPointList; } private void CreatNormalPLCPoint(Point pt1) { ptList.Add(pt1); ptList.Add(new Point(pt1.X + 30, pt1.Y)); ptList.Add(new Point(pt1.X + 30, pt1.Y - 10)); ptList.Add(new Point(pt1.X + 30, pt1.Y + 10)); ptList.Add(new Point(pt1.X + 38, pt1.Y - 10)); ptList.Add(new Point(pt1.X + 38, pt1.Y + 10)); ptList.Add(new Point(pt1.X + 38, pt1.Y)); ptList.Add(new Point(pt1.X + 68, pt1.Y)); } private void CreatSpecialPLCPoint(Point pt1) { ptList.Add(pt1); ptList.Add(new Point(pt1.X, pt1.Y + 35)); ptList.Add(new Point(pt1.X + 30, pt1.Y + 35)); ptList.Add(new Point(pt1.X + 30, pt1.Y + 25)); ptList.Add(new Point(pt1.X + 30, pt1.Y + 45)); ptList.Add(new Point(pt1.X + 38, pt1.Y + 25)); ptList.Add(new Point(pt1.X + 38, pt1.Y + 45)); ptList.Add(new Point(pt1.X + 38, pt1.Y + 35)); ptList.Add(new Point(pt1.X + 68, pt1.Y + 35)); ptList.Add(new Point(pt1.X + 68, pt1.Y)); } public void DrawPLC(Graphics g, Point pt, Form1 form) { if (this == plcList[plcList.Count - 1] && isChangeOther==false)//绘制的是当前按下的PLC模块 { for (int i = 0; i < startPointList.Count - 1; i++) { if (plcList[i].isSpecial == false)//在串联模块附近 { int offsetX = plcList[i].ptList[7].X - pt.X; int offsetY = plcList[i].ptList[7].Y - pt.Y; if (Math.Abs(offsetX) <= 20 && Math.Abs(offsetY) <= 10)//7号点附近，创建串联模块 { CreatNormalPLCPoint(plcList[i].ptList[7]); DrawNormal(g); break; } //创建并联模块 if (plcList[i].ptList[2].X - 10 < pt.X && plcList[i].ptList[4].X + 10 > pt.X && plcList[i].ptList[2].Y - 10 < pt.Y && plcList[i].ptList[3].Y + 10 > pt.Y) { CreatSpecialPLCPoint(plcList[i].ptList[0]); DrawSpecial(g); isSpecial = true; break; } } else//在并联模块附近 { int offsetX = plcList[i].ptList[8].X - pt.X; int offsetY = plcList[i].ptList[8].Y - pt.Y; bool firstB = Math.Abs(offsetX) <= 20 && Math.Abs(offsetY) <= 10;//在8号点附近 offsetX = plcList[i].ptList[9].X - pt.X; offsetY = plcList[i].ptList[9].Y - pt.Y; bool secondB = offsetX >= 0 && offsetX < 20 && Math.Abs(offsetY) <= 10;//在9号点左侧 bool thirdB = offsetX < 0 && offsetX > -20 && Math.Abs(offsetY) <= 10;//在9号点右侧 bool fourB = plcList[i].ptList[3].X - 10 < pt.X && plcList[i].ptList[5].X + 10 > pt.X && plcList[i].ptList[3].Y - 10 < pt.Y && plcList[i].ptList[4].Y + 10 > pt.Y; if (firstB || secondB) { if (firstB) { CreatNormalPLCPoint(plcList[i].ptList[8]); } if (secondB) { CreatNormalPLCPoint(plcList[i].ptList[9]); } //DrawNormal(g); if (isChangeOther == false)//更改当前并联模块的显示，将8、9号点右移，且多画一条线 { plcList[i].ptList[8] = new Point(plcList[i].ptList[8].X + 68, plcList[i].ptList[8].Y); plcList[i].ptList[9] = new Point(plcList[i].ptList[9].X + 68, plcList[i].ptList[9].Y); if (plcList[i].ptList.Count < 11) { plcList[i].ptList.Add(new Point(plcList[i].ptList[7].X + 30, plcList[i].ptList[7].Y - 35)); } //plcList[i].ptList[10] = new Point(plcList[i].ptList[7].X + 30, plcList[i].ptList[7].Y-35); isChangeOther = true; form.Invalidate(); } break; } if (thirdB) { CreatNormalPLCPoint(plcList[i].ptList[9]); DrawNormal(g); break; } if (fourB) { CreatSpecialPLCPoint(plcList[i].ptList[1]); DrawSpecial(g); isSpecial = true; break; } } } if (ptList.Count == 0 && plcList.Count == 1)//当前按下点附近都没有PLC模块，且为第一次创建，此时创建新的PLC模块 { CreatNormalPLCPoint(pt); DrawNormal(g); } if(ptList.Count == 0 && plcList.Count != 1)//当前按下点附近没有PLC模块，禁止创建 { plcList.RemoveAt(plcList.Count - 1); startPointList.RemoveAt(plcList.Count - 1); } } else//绘制之前的模块 { if (isSpecial == false) { DrawNormal(g); } else { DrawSpecial(g); } } } private void DrawNormal(Graphics g)//绘制串联模块 { //AliceBlue Pen pen = new Pen(Color.AliceBlue, 2); g.DrawLine(pen, ptList[0], ptList[7]); pen.Color = Color.Black; for (int i = 0; i < 4; i++) { g.DrawLine(pen, ptList[i*2], ptList[i*2+1]); } } private void DrawSpecial(Graphics g)//绘制并联模块 { Pen pen = new Pen(Color.AliceBlue, 2); g.DrawLine(pen, ptList[1], ptList[8]); pen.Color = Color.Black; g.DrawLine(pen, ptList[0], ptList[1]); g.DrawLine(pen, ptList[1], ptList[2]); g.DrawLine(pen, ptList[3], ptList[4]); g.DrawLine(pen, ptList[5], ptList[6]); g.DrawLine(pen, ptList[7], ptList[8]); g.DrawLine(pen, ptList[8], ptList[9]); if (ptList.Count >= 11) { g.DrawLine(pen, ptList[9], ptList[10]); } } } }
效果图如下：