using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace DPumpHydr.WinFrmUI.Volute
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{
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public partial class ChartSectArea : UserControl
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{
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public ChartSectArea()
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{
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Section sect1 = new Section() { SectIndex = 1, Name = "1", Area = 300 };
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Section sect2 = new Section() { SectIndex = 2, Name = "2", Area = 200 };
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Section sect3 = new Section() { SectIndex = 3, Name = "3", Area = 320 };
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Section sect4 = new Section() { SectIndex = 4, Name = "4", Area = 460 };
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Section sect5 = new Section() { SectIndex = 5 , Name = "5", Area = 110 };
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Section sect6 = new Section() { SectIndex = 6, Name = "6", Area = 608 };
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Section sect7 = new Section() { SectIndex = 7 , Name = "7", Area = 708 };
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Section sect8 = new Section() { SectIndex = 8, Name = "8", Area = 819 };
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_allSection = new List<Section> { sect1, sect2, sect3, sect4, sect5, sect6, sect7, sect8 };
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var areaMaxValue = (from x in _allSection select x.Area).Max();
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var areaMinValue = (from x in _allSection select x.Area).Min();
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_areaAxisRange.CoordMin = areaMinValue/2;
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_areaAxisRange.CoordMax = areaMaxValue * 1.2;
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}
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class Section
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{
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public int SectIndex { get;set; }
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public string Name { get; set; }
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public double Area { get; set; }
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}
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class AreaAxisRange
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{
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public double CoordMax { get; set; }//坐标上最大值
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public double CoordMin { get; set; }//坐标上最小值
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}
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internal float CalcAreaPixelPt(double area)
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{
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var y = this._diagram_padding_top + this._diagram_padding_top + (_areaAxisRange.CoordMax - area) * (this._diagram_height - _diagram_padding_top - _diagram_padding_bottom) /(_areaAxisRange.CoordMax - _areaAxisRange.CoordMin);
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return Convert.ToSingle( y );
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}
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List<Section> _allSection;
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AreaAxisRange _areaAxisRange = new AreaAxisRange();
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/// <summary>
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///
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/// </summary>
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/// <param name="e"></param>
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protected override void OnPaint(PaintEventArgs e)
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{
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base.OnPaint(e);
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_diagram_width = this.Width - this._diagram_margin_left- this._diagram_margin_right;
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_diagram_height = this.Height - this._diagram_margin_top - this._diagram_margin_bottom;
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if(_diagram_height<=0 || _diagram_width <= 10)
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{
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return;
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}
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_diagram_leftTopPoint.X = this._diagram_margin_left;
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_diagram_leftTopPoint.Y = this._diagram_margin_top;
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_diagram_leftBottomPoint.X = this._diagram_margin_left;
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_diagram_leftBottomPoint.Y = this._diagram_margin_top + _diagram_height;
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_diagram_rightTopPoint.X = this._diagram_margin_left + _diagram_width;
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_diagram_rightTopPoint.Y = this._diagram_margin_top;
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_diagram_rightBottomPoint.X = this._diagram_margin_left + _diagram_width;
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_diagram_rightBottomPoint.Y = this._diagram_margin_top + _diagram_height;
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Graphics g = e.Graphics;
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DrawAxisX(g);
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DrawAxisY(g);
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DrawDiagram(g);
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}
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PointF _diagram_leftTopPoint = new PointF() ;
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PointF _diagram_leftBottomPoint = new PointF();
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PointF _diagram_rightTopPoint = new PointF();
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PointF _diagram_rightBottomPoint = new PointF();
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float _diagram_width = 0;
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float _diagram_height = 0;
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float _diagram_margin_left = 40;
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float _diagram_margin_right = 40;
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float _diagram_margin_top = 20;
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float _diagram_margin_bottom = 30;
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float _diagram_padding_left = 5;
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float _diagram_padding_right = 5;
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float _diagram_padding_top = 2 ;
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float _diagram_padding_bottom = 2 ;
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Color _tickmarkColorX = Color.Blue;//主刻度
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float _tickmarkLengthX = 5;
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private void DrawAxisX(Graphics g)
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{
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StringFormat sf = new StringFormat();
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sf.Alignment = StringAlignment.Center;
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sf.LineAlignment = StringAlignment.Near;
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var sect_count = _allSection.Count;
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float space_width = (this._diagram_width - _diagram_padding_left - _diagram_padding_right) / (sect_count - 1);
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//刻度 tickmark
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using (SolidBrush brushText = new SolidBrush(Color.Red))
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using (Font fontText = new Font("Courier New", 11))
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using (Pen penAxisBase = new Pen(_tickmarkColorX, 2f))
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{
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for (int i = 0; i < sect_count; i++)
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{
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var sect = _allSection[i];
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var x = this._diagram_leftBottomPoint.X + _diagram_padding_left + i * space_width;
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g.DrawLine(penAxisBase, new PointF(x, _diagram_leftBottomPoint.Y), new PointF(x, _diagram_leftBottomPoint.Y + _tickmarkLengthX));
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g.DrawString(sect.Name, fontText, brushText, new PointF(x, _diagram_leftBottomPoint.Y + _tickmarkLengthX + 5), sf);
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}
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//基线
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g.DrawLine(penAxisBase, _diagram_leftBottomPoint, _diagram_rightBottomPoint);
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}
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}
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private void DrawAxisY(Graphics g)
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{
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using (Pen penCurve = new Pen(Color.Blue, 2f))
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{
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g.DrawLine(penCurve, _diagram_leftBottomPoint, _diagram_leftTopPoint);
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}
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}
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private void DrawDiagram(Graphics g)
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{
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using (Pen penCurve = new Pen(Color.Red, 2f))
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using (SolidBrush penBrush = new SolidBrush(Color.Black))
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{
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var sect_count = _allSection.Count;
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float space_width = (this._diagram_width - _diagram_padding_left - _diagram_padding_right) / (sect_count - 1);
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List<PointF> lines = new List<PointF>();
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for (int i = 0; i < sect_count; i++)
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{
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var sect = _allSection[i];
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PointF pt = new PointF();
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pt.X = this._diagram_leftBottomPoint.X + _diagram_padding_left + i * space_width;
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pt.Y = this.CalcAreaPixelPt(sect.Area);
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g.FillEllipse(penBrush, pt.X - 4f, pt.Y - 4f, 8, 8);
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lines.Add(pt);
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}
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g.DrawCurve(penCurve, lines.ToArray());
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}
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//
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}
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}
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}
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