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The author:(作者)qqpublished in(发表于) 2014/7/11 9:16:29 c#中GDI+图形图像:GDI+中曲线的填充使用方法
c#中GDI+图形图像:GDI+中曲线的填充使用方法|实例
GDI+中曲线的填充GDI+中,可以使用画笔来填充曲线,Graphics类填充曲线的方法有FillRectangle、FillEllipse、FillPie、FillPolygon、FillClosedCurve、FillPath和FillRegion。只要调用其中的任意一个方法,并使用一种指定的画笔类型作为其参数,就可以填充曲线。示例填充曲线本示例中,当程序运行时,单击【填充曲线】按钮,在窗体中绘制一段图形路径,并使用指定画笔对该图形路径进行填充。示例运行结果如图1所示。图1 填充曲线Form1窗体中,单击【填充曲线】按钮,程序首先调用Graphics对象的FillPath方法,将要绘制的图形路径使用指定画笔填充好,然后再调用Graphics对象的DrawPath方法将图形路径绘制出来。【填充曲线】按钮的Click事件代码如下:private void button1_Click(object sender, EventArgs e){Graphics graphics = this.CreateGraphics();SolidBrush mySolidBrush = new SolidBrush(Color.GreenYellow);GraphicsPath myGraphicsPath = new GraphicsPath();Pen myPen = new Pen(Color.Blue, 1);Point[] myPoints = { new Point(15, 30), new Point(30, 40), new Point(50, 30) };myGraphicsPath.AddArc(15, 20, 80, 50, 210, 120);myGraphicsPath.StartFigure();myGraphicsPath.AddCurve(myPoints);myGraphicsPath.AddString("曲线填充", new FontFamily("华文行楷"), (int)FontStyle.Regular, 50, new PointF (20, 50), new StringFormat());myGraphicsPath.AddPie(180, 20, 80, 50, 210, 120);graphics.FillPath(mySolidBrush, myGraphicsPath);graphics.DrawPath(myPen, myGraphicsPath);}完整程序代码如下:★ ★★★★Form1.cs窗体代码文件完整程序代码★★★★★using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Drawing.Drawing2D;namespace _6_13{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){Graphics graphics = this.CreateGraphics();SolidBrush mySolidBrush = new SolidBrush(Color.GreenYellow);GraphicsPath myGraphicsPath = new GraphicsPath();Pen myPen = new Pen(Color.Blue, 1);Point[] myPoints = { new Point(15, 30), new Point(30, 40), new Point(50, 30) };myGraphicsPath.AddArc(15, 20, 80, 50, 210, 120);myGraphicsPath.StartFigure();myGraphicsPath.AddCurve(myPoints);myGraphicsPath.AddString("曲线填充", new FontFamily("华文行楷"), (int)FontStyle.Regular, 50, new PointF(20, 50), new StringFormat());myGraphicsPath.AddPie(180, 20, 80, 50, 210, 120);graphics.FillPath(mySolidBrush, myGraphicsPath);graphics.DrawPath(myPen, myGraphicsPath);}}}★ ★★★★Form1.Designer.cs窗体设计文件完整程序代码★★★★★namespace _6_13{partial class Form1{/// /// 必需的设计器变量。/// private System.ComponentModel.IContainer components = null;/// /// 清理所有正在使用的资源。/// /// 如果应释放托管资源,为 true;否则为 false。protected override void Dispose(bool disposing){if (disposing && (components != null)){components.Dispose();}base.Dispose(disposing);}#region Windows 窗体设计器生成的代码/// /// 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.button1 = new System.Windows.Forms.Button();this.SuspendLayout();//// button1//this.button1.Location = new System.Drawing.Point(89, 104);this.button1.Name = "button1";this.button1.Size = new System.Drawing.Size(75, 23);this.button1.TabIndex = 0;this.button1.Text = "填充曲线";this.button1.UseVisualStyleBackColor = true;this.button1.Click += new System.EventHandler(this.button1_Click);//// Form1//this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;this.ClientSize = new System.Drawing.Size(252, 139);
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