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Win10 Paint

Asp.Net 使用 GDI+ 绘制3D饼图入门篇源码

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topn3dpie.aspx------------------

topn3dpie.aspx.cs-----------------using System;using System.Collections;using System.ComponentModel;using System.Data;using System.Drawing;using System.Web;using System.Web.SessionState;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.HtmlControls;using System.Drawing.Imaging;using System.Drawing.Drawing2D;using System.IO;

namespace Yeefly{ ///  /// Graph 的摘要说明。 ///  public class topn3dpie : System.Web.UI.Page {  private void Page_Load(object sender, System.EventArgs e)  {   Response.ContentType = image/jpeg";   const int width = 300, height = 300;   int x = 30, y = 50;

   int pieWidth = 120, pieHeight = 40, pieShadow = 15;   int[] arrVote = {70,90,80,20,60,40};   Random oRan = new Random(); 

   Bitmap objBitmap = new Bitmap(width, height);   Graphics objGraphics = Graphics.FromImage(objBitmap);   objGraphics.DrawRectangle(new Pen(Color.Black),0,0,width,height);   objGraphics.FillRectangle(new SolidBrush(Color.White), 1, 1,width - 2, height - 2);   SolidBrush objBrush = new SolidBrush(Color.Blue);   objGraphics.SmoothingMode = SmoothingMode.AntiAlias;    int iCurrentPos   = 0;

   Color[] arrColor = {Color.Red,Color.Red,Color.Red,Color.Red,Color.Red,Color.Red};

   for(int i = arrVote.Length - 1 ; i >= 0; i--)   {    arrColor[i] = Color.FromArgb(oRan.Next(255), oRan.Next(255), oRan.Next(255));   }

   for(int i = arrVote.Length - 1 ; i >= 0; i--)   {    objBrush.Color = arrColor[i];    for(int iLoop2 = 0; iLoop2 < pieShadow; iLoop2++)     objGraphics.FillPie(new HatchBrush(HatchStyle.Percent50,objBrush.Color),x, y + iLoop2, pieWidth, pieHeight, iCurrentPos, arrVote[i]);    iCurrentPos += arrVote[i];   }

   iCurrentPos  = 0;   for(int i = arrVote.Length - 1 ; i >= 0;i--)   {    objBrush.Color = arrColor[i];    objGraphics.FillPie(objBrush,x, y, pieWidth, pieHeight, iCurrentPos, arrVote[i]);    iCurrentPos += arrVote[i];   }

   objBitmap.Save(Response.OutputStream, ImageFormat.Jpeg);   // clean up...   objGraphics.Dispose();   objBitmap.Dispose();  }

  #region Web 窗体设计器生成的代码  override protected void OnInit(EventArgs e)  {   //   // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。   //   InitializeComponent();   base.OnInit(e);  }    ///   /// 设计器支持所需的方法 - 不要使用代码编辑器修改  /// 此方法的内容。  ///   private void InitializeComponent()  {       this.Load += new System.EventHandler(this.Page_Load);  }  #endregion }}

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文章标题:《Win10 Paint》
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