C#基础绘图

约定不等于承诺〃 2024-02-18 20:06 45阅读 0赞

/\*  
 \* Created by SharpDevelop.  
 \* User: Jason\_PC  
 \* Date: 2018/5/6  
 \* Time: 20:48  
 \*  
 \* To change this template use Tools | Options | Coding | Edit Standard Headers.  
 \*/  
**using** System;  
**using** System.Drawing;  
**using** System.Windows.Forms;  
**using** System.Drawing.Drawing2D;  
  
  
**namespace** Windows  
\{  
/// <**summary**>  
/// Description of MainForm.  
/// <**/****summary**>  
**public** partial class MainForm : Form  
\{  
//Graphics g;  
**public** MainForm()  
\{  
//  
// The InitializeComponent() call is required for Windows Forms designer support.  
//  
**InitializeComponent**();  
//  
// **TODO**: Add constructor code after the InitializeComponent() call.  
//  
\}  
  
void **Form1\_Paint**( PaintEventArgs e)  
\{  
//g= e.Graphics;  
//清除整个绘图面并以指定背景色填充  
//g.Clear(Color.White);  
//随便绘制一条直线出来看看  
//g.DrawLine(SystemPens.ControlText, 10, 10, 100, 100);  
\}  
  
void **MainFormLoad**( object sender, EventArgs e)  
\{  
  
\}  
  
void **BtnDrawLine\_Click**( object sender, EventArgs e)  
\{  
Graphics g = **this**. **CreateGraphics**();  
**Color** red = **Color**. **FromArgb**( 255, 0, 0);  
Pen blackPen = **new** Pen(red, 3);  
**Point** point1 = **new** **Point**( 100, 100); //坐标（100，100）  
**Point** point2 = **new** **Point**( 500, 100); //坐标（500，100）  
g. **DrawLine**(blackPen, point1, point2); //两个坐标连成直线  
  
\}  
void **BtnInvalidate\_Click**( object sender, EventArgs e)  
\{  
  
**Rectangle** r = **new** **Rectangle**( 10, 10, 200, 400); //从坐标（10，10）开始，定义一个宽度200，高度200的矩形区域  
**this**. **Invalidate**(r);  
\}  
void **BtnDrawPie\_Click**( object sender, EventArgs e)  
\{  
Graphics g = **this**. **CreateGraphics**();  
**Rectangle** r = **new** **Rectangle**( 10, 10, 200, 100);  
Pen pen1 = **new** Pen( **Color**.Black);  
g. **DrawRectangle**(pen1, 50, 50, 200, 200); //起始坐标（50，50），宽度200，高度200  
//椭圆  
g. **DrawPie**(pen1, 50, 50, 200, 300, 225, 10); //起始坐标（50，50），宽度200，高度200，射线1=225，射线2=90  
//g.DrawPie(pen1, r, 225, 90);  
  
//填充椭圆  
//g.FillPie(new SolidBrush(Color.Blue), 50, 50, 200, 200, 225, 90);  
//g.FillPie(new SolidBrush(Color.DarkOrange), r, 225, 90);  
\}  
void **BtnRectangle\_Click**( object sender, EventArgs e)  
\{  
Graphics g = **this**. **CreateGraphics**();  
**Rectangle** r = **new** **Rectangle**( 10, 10, 200, 100);  
Pen pen1 = **new** Pen( **Color**.Black);  
//矩形  
g. **DrawRectangle**(pen1, 50, 50, 200, 200); //起始坐标（50，50），宽度200，高度200  
g. **DrawRectangle**(pen1, r);  
//填充矩形  
g. **FillRectangle**( **new** SolidBrush( **Color**.Blue), 50, 50, 200, 200);  
g. **FillRectangle**( **new** SolidBrush( **Color**.DarkOrange), r);  
  
\}  
void **BtnDrawEllipse\_Click**( object sender, EventArgs e)  
\{  
Graphics g = **this**. **CreateGraphics**();  
**Rectangle** r = **new** **Rectangle**( 310, 10, 500, 100);  
Pen pen1 = **new** Pen( **Color**.Black);  
//椭圆  
g. **DrawEllipse**(pen1, 350, 50, 200, 200); //起始坐标（50，50），宽度200，高度200  
g. **DrawEllipse**(pen1, r);  
//填充椭圆  
g. **FillEllipse**( **new** SolidBrush( **Color**.Blue), 350, 50, 200, 200);  
g. **FillEllipse**( **new** SolidBrush( **Color**.DarkOrange), r);  
\}  
void **BtnDrawArc\_Click**( object sender, EventArgs e)  
\{  
Graphics g = **this**. **CreateGraphics**();  
**Rectangle** r = **new** **Rectangle**( 10, 10, 200, 100);  
Pen pen1 = **new** Pen( **Color**.Black);  
g. **DrawArc**(pen1, 50, 50, 200, 200, 180, 90); //起始坐标（50，50），宽度200，高度200，弧线的起始角度180°，弧线经过角度90°  
g. **DrawArc**(pen1, r, 0, 135);  
\}  
void **BtnClear\_Click**( object sender, EventArgs e)  
\{  
  
Graphics g = **this**. **CreateGraphics**();  
g. **Clear**( **Color**.Red);  
\}  
void **Ball\_Click**( object sender, EventArgs e)  
\{  
Graphics g = **this**. **CreateGraphics**();  
Pen pen1 = **new** Pen( **Color**.Black);  
//椭圆  
g. **DrawEllipse**(pen1, 0, 0, 200, 200);  
  
//g.DrawEllipse(pen1, 0, 80, 200, 30);   
//g.DrawEllipse(pen1, 80, 0, 30, 200);   
g. **DrawArc**(pen1, 0, 80, 200, 30, 0, 180);  
g. **DrawArc**(pen1, 80, 0, 30, 200, 90, 180);  
  
**float**\[\] dashValues = \{ 2, 3\};  
Pen blackPen = **new** Pen( **Color**.Black, 1);  
blackPen.DashPattern = dashValues;  
g. **DrawArc**(blackPen, 0, 80, 200, 30, 180, 180);  
g. **DrawArc**(blackPen, 80, 0, 30, 200, 270, 180);  
  
\}  
void **DrawString\_Click**( object sender, EventArgs e)  
\{  
System.Drawing. Graphics formGraphics = **this**. **CreateGraphics**();  
string drawString = "Sample Text";  
System.Drawing. Font drawFont = **new** System.Drawing. Font( "Arial", 16);  
System.Drawing. SolidBrush drawBrush = **new** System.Drawing. SolidBrush(System.Drawing. **Color**.Black);  
**float** x = 150.0F;  
**float** y = 50.0F;  
System.Drawing. StringFormat drawFormat = **new** System.Drawing. StringFormat();  
formGraphics. **DrawString**(drawString, drawFont, drawBrush, x, y, drawFormat);  
drawFont. **Dispose**();  
drawBrush. **Dispose**();  
formGraphics. **Dispose**();  
  
\}  
void **DrawVerticalString\_Click**( object sender, EventArgs e)  
\{  
System.Drawing. Graphics formGraphics = **this**. **CreateGraphics**();  
string drawString = "Sample Text";  
System.Drawing. Font drawFont = **new** System.Drawing. Font( "Arial", 16);  
System.Drawing. SolidBrush drawBrush = **new** System.Drawing. SolidBrush(System.Drawing. **Color**.Black);  
**float** x = 150.0F;  
**float** y = 50.0F;  
System.Drawing. StringFormat drawFormat = **new** System.Drawing. StringFormat();  
drawFormat.FormatFlags = **StringFormatFlags**. *DirectionVertical*;  
formGraphics. **DrawString**(drawString, drawFont, drawBrush, x, y, drawFormat);  
drawFont. **Dispose**();  
drawBrush. **Dispose**();  
formGraphics. **Dispose**();  
\}  
void **DrawPath\_Click**( object sender, EventArgs e)  
\{  
// Create an array of points for the curve in the second figure.  
**Point**\[\] points = \{  
**new** **Point**( 40, 60),  
**new** **Point**( 50, 70),  
**new** **Point**( 30, 90)\};  
  
GraphicsPath path = **new** GraphicsPath();  
  
path. **StartFigure**(); // Start the first figure.  
path. **AddArc**( 175, 50, 50, 50, 0, - 180);  
path. **AddLine**( 100, 0, 250, 20);  
// First figure is not closed.  
  
path. **StartFigure**(); // Start the second figure.  
path. **AddLine**( 50, 20, 5, 90);  
path. **AddCurve**(points, 3);  
path. **AddLine**( 50, 150, 150, 180);  
path. **CloseFigure**(); // Second figure is closed.  
Graphics g = **this**. **CreateGraphics**();  
  
g. **DrawPath**( **new** Pen( **Color**. **FromArgb**( 255, 255, 0, 0), 2), path);  
\}  
void **ThreedClick**( object sender, EventArgs e)  
\{  
Graphics g = **this**. **CreateGraphics**();  
**Color** red = **Color**. **FromArgb**( 255, 0, 0);  
Pen blackPen = **new** Pen( **Color**.Black, 3);  
**Point** point1 = **new** **Point**( 100, 100); //坐标（100，100）  
**Point** point2 = **new** **Point**( 500, 100); //坐标（500，100）  
//g.DrawLine(blackPen, point1, point2); //两个坐标连成直线  
g. **DrawLine**(blackPen, 250, 300, 700, 300); //两个坐标连成直线  
g. **DrawLine**(blackPen, 300, 250, 300, 700); //两个坐标连成直线  
g. **DrawLine**(blackPen, 300, 300, 700, 300); //两个坐标连成直线  
  
\}  
\}  
\}