using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Windows.Forms;
using?System.Drawing.Drawing2D;

namespace?圖像旋轉
{
????public?partial?class?Form1?:?Form
????{
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

????????private?void?Form1_Load（object?sender?EventArgs?e）
????????{

????????}
????????Timer?timer1;//定時旋轉和移動
????????Graphics?g;//背景圖的畫圖對象
????????float?x?=?0;//水平移動的初始位置
????????Bitmap?bmp;
????????Bitmap?background;
????????private?void?pictureBox1_Click（object?sender?EventArgs?e）
????????{
????????????//OpenFileDialog?opf?=?new??OpenFileDialog（）;
????????????//if?（opf.ShowDialog（）?!=?System.Windows.Forms.DialogResult.OK）
????????????//????return;

????????????//bmp?=?new?Bitmap（opf.FileName?）;
????????????//background?=?new?Bitmap（pictureBox1.Width?pictureBox1.Height?System.Drawing.Imaging.PixelFormat.Format24bppRgb）;//畫在PictureBox上
????????????//g?=?Graphics.FromImage（background）;
????????????//g.TranslateTransform（background.Width?/?2?background.Height?/?2）;//移動一下中心點，畫在背景的中央，好看些
????????????//timer1?=?new?Timer（）;
????????????//timer1.Interval?=?100;
????????????//timer1.Tick?+=?new?EventHandler（timer1_Tick）;
????????????//timer1.Enabled?=?true;
????????}
????????void?timer1_Tick（object?sender?EventArgs?e）
????????{
????????????g.Clear（Color.Black）;
????????????g.RotateTransform（10.0F）;//每次旋轉10度，實際上是畫圖坐標旋轉
????????????g.DrawImage（bmp?-bmp.Width?/?2?-bmp.Height?/?2）;//源圖中心點和畫圖對象中心重合，自旋轉效果，否則會以左上角為中心旋轉
????????????Graphics?gb?=?pictureBox1.CreateGraphics（）;
????????????x?+=?3.0f;//水平移動效果，步長3像素
????????????pictureBox1.Refresh（）;
????????}
????????//任意角度旋轉
????????private?void?RotateTransformButton_Click（object?sender?EventArgs?e）
????????{
????????????try
????????????{
????????????????//Bitmap?a?=?new?Bitmap（pictureBox1.Image）;//得到圖片框中的圖片
????????????????//pictureBox1.Image?=?Rotate（a?Convert.ToInt32（textBox1.Text））;
????????????????//pictureBox1.SizeMode?=?PictureBoxSizeMode.AutoSize;
????????????????//pictureBox1.Location?=?panel1.Location;
????????????????//pictureBox1.Refresh（）;//最后刷新圖片框
????????????}
????????????catch?{?}
????????}

????????#region?圖片旋轉函數
????????///?

????????///?以逆時針為方向對圖像進行旋轉
????????///?

????????///?位圖流
????????///?旋轉角度[0360]（前臺給的）
????????///?
????????public?Bitmap?Rotate（Bitmap?b?int?angle）
????????{
????????????angle?=?angle?%?360;

????????????//弧度轉換
????????????double?radian?=?angle?*?Math.PI?/?180.0;
????????????double?cos?=?Math.Cos（radian）;
????????????double?sin?=?Math.Sin（radian）;

????????????//原圖的寬和高
????????????int?w?=?b.Width;
????????????int?h?=?b.Height;
????????????int?W?=?（int）（Math.Max（Math.Abs（w?*?cos?-?h?*?sin）?Math.Abs（w?*?cos?+?h?*?sin）））;
????????????int?H?=?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????878??2014-08-13?14:07??圖像旋轉.sln

????..A..H.?????19456??2014-08-15?18:30??圖像旋轉.suo

?????文件??????11264??2014-08-13?14:45??圖像旋轉\bin\Debug\圖像旋轉.exe

?????文件??????28160??2014-08-13?14:45??圖像旋轉\bin\Debug\圖像旋轉.pdb

?????文件??????11600??2014-08-15?10:18??圖像旋轉\bin\Debug\圖像旋轉.vshost.exe

?????文件????????490??2012-06-06?02:06??圖像旋轉\bin\Debug\圖像旋轉.vshost.exe.manifest

?????文件???????5609??2014-08-13?14:45??圖像旋轉\Form1.cs

?????文件???????4548??2014-08-13?14:45??圖像旋轉\Form1.Designer.cs

?????文件???????6011??2014-08-13?14:45??圖像旋轉\Form1.resx

?????文件???????5420??2014-08-15?10:10??圖像旋轉\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

?????文件???????6417??2014-08-13?14:45??圖像旋轉\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件????????813??2014-08-15?10:18??圖像旋轉\obj\x86\Debug\圖像旋轉.csproj.FileListAbsolute.txt

?????文件????????975??2014-08-13?14:45??圖像旋轉\obj\x86\Debug\圖像旋轉.csproj.GenerateResource.Cache

?????文件??????11264??2014-08-13?14:45??圖像旋轉\obj\x86\Debug\圖像旋轉.exe

?????文件????????180??2014-08-13?14:45??圖像旋轉\obj\x86\Debug\圖像旋轉.Form1.resources

?????文件??????28160??2014-08-13?14:45??圖像旋轉\obj\x86\Debug\圖像旋轉.pdb

?????文件????????180??2014-08-13?14:12??圖像旋轉\obj\x86\Debug\圖像旋轉.Properties.Resources.resources

?????文件????????493??2014-08-13?14:07??圖像旋轉\Program.cs

?????文件???????1356??2014-08-13?14:07??圖像旋轉\Properties\AssemblyInfo.cs

?????文件???????2876??2014-08-13?14:07??圖像旋轉\Properties\Resources.Designer.cs

?????文件???????5612??2014-08-13?14:07??圖像旋轉\Properties\Resources.resx

?????文件???????1099??2014-08-13?14:07??圖像旋轉\Properties\Settings.Designer.cs

?????文件????????249??2014-08-13?14:07??圖像旋轉\Properties\Settings.settings

?????文件???????3683??2014-08-13?14:12??圖像旋轉\圖像旋轉.csproj

?????目錄??????????0??2014-08-13?14:07??圖像旋轉\obj\x86\Debug\TempPE

?????目錄??????????0??2014-08-15?10:10??圖像旋轉\obj\x86\Debug

?????目錄??????????0??2014-08-13?14:12??圖像旋轉\bin\Debug

?????目錄??????????0??2014-08-13?14:07??圖像旋轉\obj\x86

?????目錄??????????0??2014-08-13?14:07??圖像旋轉\bin

?????目錄??????????0??2014-08-13?14:07??圖像旋轉\obj

............此處省略5個文件信息