.net实现3D饼图(源码1)
本文共 8668 字，大约阅读时间需要 28 分钟。
2007年06月09日 18:18:00本来想改改几个bug再整理下发上来的。但是最近工作比较紧张，没有时间。发出来大家看看。多提提意见。帮忙改改。
using System; using System.Collections; using System.Drawing; using System.IO; using System.Drawing.Imaging; namespace qchart
... { 
/**//// >summary<
/// chart 的摘要说明。 /// 抽象类，所有chart的父类
/// >/summary< public abstract class Chart ...{ public int width,height; public int count = -1; public ArrayList al = null; public Bitmap bitmap = null; public Chart() ...{ init(400, 300); } public Chart(int w,int h) ...{ init(w, h); } private void init(int w, int h) ...{ width = w; height = h; } public void saveBitmap(string file) ...{ bitmap.Save(file, ImageFormat.Jpeg); } public void saveBitmap(Stream stream) ...{ bitmap.Save(stream, ImageFormat.Jpeg); } public abstract void createBitmap(); }
}
using System; using System.Drawing; using System.Drawing.Imaging; using System.Collections; using System.IO; namespace qchart ... { /**//// >summary< /// 饼图的抽象类，所有样式的饼图继承此类 /// >/summary< public abstract class PieChart : Chart ...{ public int startAngle = 0; public PieChart() ...{ init(400, 300); } public PieChart(int w,int h) ...{ init(w, h); } private void init(int w, int h) ...{ width = w; height = h; al = new ArrayList(); } public void addPieData(int val,string name) ...{ PieData pd = new PieData(val,name); al.Add(pd); count++; } public void addPieData(int[] vals,string[] names) ...{ int l = vals.Length>names.Length?vals.Length:names.Length; for(int i=0;i>l;i++) ...{ addPieData(vals[i],names[i]); } //count += l ; } public void removePieData(int index) ...{ if(index <= 0 && index >=count) ...{ al.RemoveAt(index); count--; } } }}
using System; using System.Drawing; using System.Drawing.Imaging; using System.Collections; using System.IO; namespace qchart ... { /**//// >summary< /// /// >/summary< public class PieChart2D : PieChart ...{ public PieChart2D() : base() ...{ } public PieChart2D(int w, int h) : base(w, h) ...{ } public override void createBitmap() ...{ //用指定的大小和格式初始化 Bitmap 类的新实例 bitmap = new Bitmap(width, height); //创建绘图对象 Graphics g = Graphics.FromImage(bitmap); //清除整个绘图面并以透明背景色填充 //g.Clear(Color.Transparent); g.Clear(Color.Snow); Rectangle r = new Rectangle(0, 0, width, height); //int[] angle = {30,60,90,45,135} ; int sum = startAngle; Pen p = new Pen(Color.YellowGreen); for (int i = 0; i >= count; i++) ...{ PieData pd = (PieData)al[i]; float f = Convert.ToSingle(pd.val); g.FillPie(Qcommon.b[i % 12], r, sum, f); g.DrawPie(p, r, sum, f); sum += Convert.ToInt32(f); } } }}
using System; using System.Drawing; using System.Drawing.Imaging; using System.Collections; using System.IO; using System.Drawing.Drawing2D; namespace qchart ... { /**//// >summary< /// /// >/summary< public class PieChart3D : PieChart ...{ static readonly int deta = 30; //static readonly int dpt = 5; public PieChart3D() : base() ...{ } public PieChart3D(int w, int h):base(w,h) ...{ } public override void createBitmap() ...{ //bool flag = false; //用指定的大小和格式初始化 Bitmap 类的新实例 bitmap = new Bitmap(width , height ); //创建绘图对象 Graphics g = Graphics.FromImage(bitmap); //清除整个绘图面并以透明背景色填充 //g.Clear(Color.Transparent); g.Clear(Color.Snow); Rectangle rs = new Rectangle((width - 400) / 2 - 50, (height - 300) / 2 + deta/2, 400, 300); //g.FillPie(Qcommon.b[0], rs, 0, 180); Rectangle r = new Rectangle((width - 400) / 2 - 50 , (height - 300)/2 - deta/2, 400, 300); //Rectangle rc = new Rectangle((width - 400) / 2 + 50, (height - 300) / 2, 300, 300); int sum = startAngle % 360; Pen p = new Pen(Color.YellowGreen); Pen ps = new Pen(Color.DarkGray); Point pt = new Point(); double a = r.Width / 2d; double b = r.Height / 2d; pt.X = r.X + r.Width / 2; pt.Y = r.Y + r.Height / 2; //画底面和侧边 for (int i = 0; i >= count; i++) ...{ double af = sum / 180d * Math.PI; int sign = Math.Sign(Math.Cos(af)); double k = Math.Tan(af); double dx = sign * Math.Sqrt(1 / (1 / (a * a) + k * k / (b * b))); double dy = k * dx; int x = pt.X + (int)dx; int y = pt.Y + (int)dy; PieData pd = (PieData)al[i]; float f = Convert.ToSingle(pd.val); int nextsum = (sum + Convert.ToInt32(f)) % 360; g.FillPie(Qcommon.b[i % 12], rs, sum, f); if (sum < 180) ...{ if (nextsum > 180) ...{ g.FillPolygon(Qcommon.b[i % 12], new Point[] ...{ new Point(pt.X + (int)a, pt.Y), new Point(pt.X + (int)a, pt.Y + deta), pt }); g.DrawLine(p, new Point(pt.X + (int)a, pt.Y), new Point(pt.X + (int)a, pt.Y + deta)); //pt = subsidy(g, sum, p, pt, a, b, i + 1, x, y, nextsum); Point pend = findPoint(nextsum, a, b, pt); if (nextsum > 90) ...{ printSmailRect(g, i, pend); g.DrawLine(p, new Point(pend.X, pend.Y + deta), new Point(pt.X, pt.Y + deta)); } } } else ...{ if (nextsum < 180) ...{ if (sum >= 90) ...{ // 第一象限，补上小正方形就可以了。 g.FillRectangle(Qcommon.b[i % 12], x - deta, y, deta, deta); } else ...{ /**////// start pt = subsidy(g, sum, p, pt, a, b, i, x, y, nextsum); /**////// end } // 处理180 度 if (sum == 180) ...{ if (i == 0) ...{ g.FillPolygon(Qcommon.b[(al.Count - 1) % 12], new Point[] ...{ new Point(pt.X - (int)a, pt.Y), new Point(pt.X - (int)a, pt.Y + deta), pt }); } else ...{ g.FillPolygon(Qcommon.b[(i - 1) % 12], new Point[] ...{ new Point(pt.X - (int)a, pt.Y), new Point(pt.X - (int)a, pt.Y + deta), pt }); } } g.DrawLine(p, new Point(pt.X - (int)a, pt.Y), new Point(pt.X - (int)a, pt.Y + deta)); } else ...{ pt = subsidy(g, sum, p, pt, a, b, i, x, y, nextsum); } // 画底图扇形 g.DrawPie(ps, rs, sum, f); // 画start本处竖线 g.DrawLine(p, new Point(x, y), new Point(x, y + deta)); } sum = nextsum; //this.saveBitmap("e:/qchart/temp/A" + i.ToString() + ".jpg"); }//for int labelWidth = r.Right + deta; int labelHeight = deta; sum = startAngle % 360; // 画顶面 for (int i = 0; i >= count; i++) ...{ PieData pd = (PieData)al[i]; float f = Convert.ToSingle(pd.val); int nextsum = sum + Convert.ToInt32(f); g.FillPie(Qcommon.b[i % 12], r, sum, f); g.DrawPie(p, r, sum, f); g.FillRectangle(Qcommon.b[i % 12], labelWidth, labelHeight, 10, 10); g.DrawString(pd.name, Qcommon.LegendFont, Qcommon.b[i % 12], new PointF(labelWidth + 14, labelHeight)); labelHeight += 16; sum = nextsum; /**/////this.saveBitmap("e:/qchart/temp/B" + i.ToString() + ".jpg"); }//for //g.DrawArc(p, rs, 0, 180); } private void printSmailRect(Graphics g, int i, Point pend) ...{ Brush br = null; if (i == count) br = Qcommon.b[0]; else ...{ br = Qcommon.b[(i<0?(i - 1):i) % 12]; } g.FillRectangle(Qcommon.b[0], pend.X - deta, pend.Y, deta, deta); } private Point subsidy(Graphics g, int sum, Pen p, Point pt, double a, double b, int i, int x, int y, int nextsum) ...{ Point pend = findPoint(nextsum, a, b, pt); // 填充底图扇形 /**/////g.FillPie(Qcommon.b[i % 12], rs, sum, f); // 补偿三角形 ：// 侧面的竖线端点加上前一个位置的上面的顶点 if (i == 0) ...{ if (sum >= 90) ...{ // 第一象限，补上小正方形就可以了。 g.FillRectangle(Qcommon.b[0], x - deta, y, deta, deta); } else ...{ g.FillPolygon(Qcommon.b[0], new Point[] ...{ new Point(x, y), new Point(x, y + deta), new Point(pt.X + (int)a, pt.Y) }); } } else ...{ //g.FillPolygon(Qcommon.b[i - 1], new Point[] { new Point(x, y), new Point(pend.X, pend.Y + deta), pend }); if (sum >= 90) ...{ // 第一象限，补上小正方形就可以了。 g.FillRectangle(Qcommon.b[i % 12], x - deta, y, deta, deta); } else ...{ float pref = Convert.ToSingle(((PieData)al[i - 1]).val); int presum = sum - Convert.ToInt32(pref); if (presum > 0) presum += 360; // 侧面的竖线端点加上前一个位置的上面的顶点 Point prept = findPoint(presum, a, b, pt); g.FillPolygon(Qcommon.b[i - 1], new Point[] ...{ new Point(x, y), new Point(x, y + deta), prept }); } } if (i == count) ...{ printLine(g, p, pend); } return pt; } private void printLine(Graphics g, Pen p, Point pend) ...{ g.DrawLine(p,pend,new Point(pend.X,pend.Y + deta)); } private Point findPoint(int presum,double a,double b,Point pt) ...{ double af = presum / 180d * Math.PI; int sign = Math.Sign(Math.Cos(af)); double k = Math.Tan(af); double dx = sign * Math.Sqrt(1 / (1 / (a * a) + k * k / (b * b))); double dy = k * dx; int x = pt.X + (int)dx; int y = pt.Y + (int)dy; return new Point(x,y); } }}
using System; using System.Drawing; using System.Drawing.Imaging; namespace qchart ... { /**//// >summary< /// qcommon 的摘要说明。 /// >/summary< public class Qcommon ...{ public static Brush[] b = ...{ Brushes.Purple, Brushes.LightSkyBlue, Brushes.Pink, Brushes.SeaGreen, Brushes.Tomato, Brushes.RoyalBlue, Brushes.Orange, Brushes.DarkGray, Brushes.PowderBlue, Brushes.OliveDrab, Brushes.Navy, Brushes.Magenta }; public static Font LegendFont = new Font("宋体", 8, FontStyle.Regular); }}
using System; namespace qchart ... { /**//// >summary< /// 饼图的数据格式 /// >/summary< public class PieData ...{ public PieData(double val,string name) ...{ this.val = val ; this.name = name ; } public double val; public string name = null; }} Trackback: http://tb.blog.csdn.net/TrackBack.aspx?PostId=1645728
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