PPT 以動畫方式顯示幻燈片是其一個很重要的特點，相信裏邊一定有您喜歡的動畫方式，今天我就帶大家認識幾款以動畫方式顯示幻燈片的製作方法，由於是GDI+編程， 這裏以圖像代替幻燈片（其實原理是相通的）來演示如何製作以動畫方式顯示圖像。
說明： 由於是以動畫方式顯示圖像， 這裏沒辦法直接貼靜態截圖， 因此決定給園友開源， 將所有的可運行代碼附在案例後面，由於所有的動畫處理圖像的對象放在都pictureBox控件中， 同時定義的類都大同小異，因此這裏先把下面案例中要用到的所有類及裝載圖像的代碼給大家， 運行時用這裏的代碼加下面任意一個實例的代碼即可運行程序！同時樓主保證每個案例代碼都編譯通過， 絕不忽悠！
private Bitmap SourceBitmap;
private Bitmap MyBitmap;
private void button2_Click(object sender, EventArgs e)
{
//打開圖像文件
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Filter = "圖像文件(JPeg, Gif, Bmp, etc.)
|*.jpg;*.jpeg;*.gif;*.bmp;*.tif; *.tiff; *.png| JPeg 圖像文件(*.jpg;*.jpeg)
|*.jpg;*.jpeg |GIF 圖像文件(*.gif)|*.gif |BMP圖像文件(*.bmp)|*.bmp
|Tiff圖像文件(*.tif;*.tiff)|*.tif;*.tiff|Png圖像文件(*.png)| *.png |所有文件(*.*)|*.*";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
//得到原始大小的圖像
SourceBitmap = new Bitmap(openFileDialog.FileName);
//得到縮放後的圖像
MyBitmap = new Bitmap(SourceBitmap, this.pictureBox1.Width, this.pictureBox1.Height);
this.pictureBox1.Image = MyBitmap;
}
}
一. 以上下反轉的方式顯示圖像.
原理: 計算圖像位置和高度後以高度的一半爲軸進行對換上下半邊的圖像.
代碼:
private void button1_Click(object sender, EventArgs e)
{
try
{
int width = this.MyBitmap.Width; //圖像寬度
int height = this.MyBitmap.Height; //圖像高度
Graphics g = this.panel1.CreateGraphics();
g.Clear(Color.Gray);
for (int i = -width / 2; i <= width / 2; i++)
{
g.Clear(Color.Gray);
int j = Convert.ToInt32(i * (Convert.ToSingle(height) / Convert.ToSingle(width)));
Rectangle DestRect = new Rectangle(0, height / 2 -j, width, 2 * j);
Rectangle SrcRect = new Rectangle(0, 0, MyBitmap.Width, MyBitmap.Height);
g.DrawImage(MyBitmap, DestRect, SrcRect, GraphicsUnit.Pixel);
System.Threading.Thread.Sleep(10);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
}
二. 以上下對接的方式顯示圖像
原理: 首先將圖像分爲上下兩部分, 然後分別顯示.
代碼:
private void button1_Click(object sender, EventArgs e)
{
try
{
int width = this.pictureBox1.Width; //圖像寬度
int height = this.pictureBox1.Height; //圖像高度
Graphics g = this.panel1.CreateGraphics();
g.Clear(Color.Gray);
Bitmap bitmap = new Bitmap(width, height);
int x = 0;
while (x <= height / 2)
{
for (int i = 0; i <= width - 1; i++)
{
bitmap.SetPixel(i, x, MyBitmap.GetPixel(i, x));
}
for (int i = 0; i <= width - 1; i++)
{
bitmap.SetPixel(i, height - x - 1, MyBitmap.GetPixel(i, height - x - 1));
}
x++;
this.panel1.Refresh();
g.DrawImage (bitmap,0,0);
System.Threading.Thread.Sleep(10);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
}
三. 以四周擴散的方式顯示圖像
原理: 首先設置圖像顯示的位置, 然後按高度和寬度的比例循環輸出, 直到高度和寬度爲原始大小.
代碼:
private void button1_Click(object sender, EventArgs e)
{
try
{
int width = this.MyBitmap.Width; //圖像寬度
int height = this.MyBitmap.Height; //圖像高度
//取得Graphics對象
Graphics g = this.panel1.CreateGraphics();
g.Clear(Color.Gray); //初始爲全灰色
for (int i = 0; i <= width / 2; i++)
{
int j = Convert.ToInt32 (i*(Convert.ToSingle(height) / Convert.ToSingle(width)));
Rectangle DestRect = new Rectangle(width / 2 - i, height/2-j, 2 * i, 2*j);
Rectangle SrcRect = new Rectangle(0, 0, MyBitmap.Width, MyBitmap.Height);
g.DrawImage(MyBitmap, DestRect, SrcRect, GraphicsUnit.Pixel);
System.Threading.Thread.Sleep(10);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
}
四. 以分塊效果顯示圖像
原理: 首先將圖分爲幾塊, 再使用 Bitmap 類的 Clone方法從原圖指定的塊中複製圖像, 最後將這些塊依次顯示出來便可
代碼:
private void button1_Click(object sender, EventArgs e)
{
Graphics g = this.panel1.CreateGraphics();
g.Clear(Color.White);
int width = MyBitmap.Width;
int height = MyBitmap.Height;
//定義將圖片切分成四個部分的區域
RectangleF[] block ={
new RectangleF(0,0,width/2,height/2),
new RectangleF(width/2,0,width/2,height/2),
new RectangleF(0,height/2,width/2,height/2),
new RectangleF(width/2,height/2,width/2,height/2)};
//分別克隆圖片的四個部分
Bitmap[] MyBitmapBlack ={
MyBitmap.Clone(block[0],System.Drawing.Imaging.PixelFormat.DontCare),
MyBitmap.Clone(block[1],System.Drawing.Imaging.PixelFormat.DontCare),
MyBitmap.Clone(block[2],System.Drawing.Imaging.PixelFormat.DontCare),
MyBitmap.Clone(block[3],System.Drawing.Imaging.PixelFormat.DontCare)};
//繪製圖片的四個部分，各部分繪製時間間隔爲0.5秒
g.DrawImage(MyBitmapBlack[0], 0, 0);
System.Threading.Thread.Sleep(1000);
g.DrawImage(MyBitmapBlack[1], width / 2, 0);
System.Threading.Thread.Sleep(1000);
g.DrawImage(MyBitmapBlack[3], width / 2, height / 2);
System.Threading.Thread.Sleep(1000);
g.DrawImage(MyBitmapBlack[2], 0, height / 2);
}
五. 以淡入淡出效果顯示圖像
原理: 使用 ImageAttrributes 類的 SetColorMatrix() 方法設置顏色, 調整矩陣實現淡出的效果. 此類還可以對顏色進行校正, 調暗, 調亮和移除等.
代碼:
private void button1_Click(object sender, EventArgs e)
{
try
{
Graphics g = this.panel1.CreateGraphics();
g.Clear(Color.Gray);
int width = MyBitmap.Width;
int height = MyBitmap.Height;
ImageAttributes attributes = new ImageAttributes();
ColorMatrix matrix = new ColorMatrix();
//創建淡入顏色矩陣
matrix.Matrix00 = (float)0.0;
matrix.Matrix01 = (float)0.0;
matrix.Matrix02 = (float)0.0;
matrix.Matrix03 = (float)0.0;
matrix.Matrix04 = (float)0.0;
matrix.Matrix10 = (float)0.0;
matrix.Matrix11 = (float)0.0;
matrix.Matrix12 = (float)0.0;
matrix.Matrix13 = (float)0.0;
matrix.Matrix14 = (float)0.0;
matrix.Matrix20 = (float)0.0;
matrix.Matrix21 = (float)0.0;
matrix.Matrix22 = (float)0.0;
matrix.Matrix23 = (float)0.0;
matrix.Matrix24 = (float)0.0;
matrix.Matrix30 = (float)0.0;
matrix.Matrix31 = (float)0.0;
matrix.Matrix32 = (float)0.0;
matrix.Matrix33 = (float)0.0;
matrix.Matrix34 = (float)0.0;
matrix.Matrix40 = (float)0.0;
matrix.Matrix41 = (float)0.0;
matrix.Matrix42 = (float)0.0;
matrix.Matrix43 = (float)0.0;
matrix.Matrix44 = (float)0.0;
matrix.Matrix33 = (float)1.0;
matrix.Matrix44 = (float)1.0;
//從0到1進行修改色彩變換矩陣主對角線上的數值
//使三種基準色的飽和度漸增
Single count = (float)0.0;
while (count < 1.0)
{
matrix.Matrix00 = count;
matrix.Matrix11 = count;
matrix.Matrix22 = count;
matrix.Matrix33 = count;
attributes.SetColorMatrix(matrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
g.DrawImage(MyBitmap, new Rectangle(0, 0, width, height),
0, 0, width, height, GraphicsUnit.Pixel, attributes);
System.Threading.Thread.Sleep(200);
count = (float)(count + 0.02);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
}
private void button3_Click(object sender, EventArgs e)
{
try
{
Graphics g = this.panel1.CreateGraphics();
g.Clear(Color.Gray);
int width = MyBitmap.Width;
int height = MyBitmap.Height;
ImageAttributes attributes = new ImageAttributes();
ColorMatrix matrix = new ColorMatrix();
//創建淡出顏色矩陣
matrix.Matrix00 = (float)0.0;
matrix.Matrix01 = (float)0.0;
matrix.Matrix02 = (float)0.0;
matrix.Matrix03 = (float)0.0;
matrix.Matrix04 = (float)0.0;
matrix.Matrix10 = (float)0.0;
matrix.Matrix11 = (float)0.0;
matrix.Matrix12 = (float)0.0;
matrix.Matrix13 = (float)0.0;
matrix.Matrix14 = (float)0.0;
matrix.Matrix20 = (float)0.0;
matrix.Matrix21 = (float)0.0;
matrix.Matrix22 = (float)0.0;
matrix.Matrix23 = (float)0.0;
matrix.Matrix24 = (float)0.0;
matrix.Matrix30 = (float)0.0;
matrix.Matrix31 = (float)0.0;
matrix.Matrix32 = (float)0.0;
matrix.Matrix33 = (float)0.0;
matrix.Matrix34 = (float)0.0;
matrix.Matrix40 = (float)0.0;
matrix.Matrix41 = (float)0.0;
matrix.Matrix42 = (float)0.0;
matrix.Matrix43 = (float)0.0;
matrix.Matrix44 = (float)0.0;
matrix.Matrix33 = (float)1.0;
matrix.Matrix44 = (float)1.0;
//從1到0進行修改色彩變換矩陣主對角線上的數值
//依次減少每種色彩分量
Single count = (float)1.0;
while (count > 0.0)
{
matrix.Matrix00 = (float)count;
matrix.Matrix11 = (float)count;
matrix.Matrix22 = (float)count;
matrix.Matrix33 = (float)count;
attributes.SetColorMatrix(matrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
g.DrawImage(MyBitmap, new Rectangle(0, 0, width, height),
0, 0, width, height, GraphicsUnit.Pixel, attributes);
System.Threading.Thread.Sleep(20);
count = (float)(count - 0.01);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
}
六. 以左右對接的方式顯示圖像
原理: 首先將圖像分爲左右兩部分, 然後分別顯示.
代碼:
private void button1_Click(object sender, EventArgs e)
{
//以左右對接方式顯示圖像
try
{
int width = this.MyBitmap.Width; //圖像寬度
int height = this.MyBitmap.Height; //圖像高度
Graphics g = this.panel1.CreateGraphics();
g.Clear(Color.Gray); //初始爲全灰色
Bitmap bitmap = new Bitmap(width, height);
int x = 0;
while (x <= width / 2)
{
for (int i = 0; i <= height - 1; i++)
{
bitmap.SetPixel(x, i, MyBitmap.GetPixel(x, i));
}
for (int i = 0; i <= height - 1; i++)
{
bitmap.SetPixel(width - x - 1, i,
MyBitmap.GetPixel(width - x - 1, i));
}
x++;
this.panel1.Refresh();
g.DrawImage (bitmap,0,0);
System.Threading.Thread.Sleep(10);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
}
七. 以左右反轉的方式顯示圖像
原理: 計算圖像位置和高度後以寬度的一半爲軸進行對換左右半邊的圖像./
代碼:
private void button1_Click(object sender, EventArgs e)
{
//以左右反轉方式顯示圖像
try
{
int width = this.MyBitmap.Width; //圖像寬度
int height = this.MyBitmap.Height; //圖像高度
Graphics g = this.panel1.CreateGraphics();
g.Clear(Color.Gray); //初始爲全灰色
for (int j = -height / 2; j <= height / 2; j++)
{
g.Clear(Color.Gray); //初始爲全灰色
int i = Convert.ToInt32(j * (Convert.ToSingle(width) / Convert.ToSingle(height)));
Rectangle DestRect = new Rectangle(width / 2 - i, 0, 2 * i, height);
Rectangle SrcRect = new Rectangle(0, 0, MyBitmap.Width, MyBitmap.Height);
g.DrawImage(MyBitmap, DestRect, SrcRect, GraphicsUnit.Pixel);
System.Threading.Thread.Sleep(10);