c#中picturebox的图像之间的转换

本文关键字：之间 转换 图像 picturebox | 更新日期: 2023-09-27 18:02:07

可能重复：
Windows窗体图片框中的图像转换

我使用下面的代码每5秒更改一次图片框中的图像，但更改图像时效果不太好：我想要图像之间的过渡效果。

使用的代码

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        Bitmap[] pictures = new Bitmap[9];
        pictures[0] = new Bitmap(@"Library Images'cf3.jpg");
        pictures[1] = new Bitmap(@"Library Images'cf4.jpg");
        pictures[2] = new Bitmap(@"Library Images'l1.JPG");
        pictures[3] = new Bitmap(@"Library Images'l2.JPG");
        pictures[4] = new Bitmap(@"Library Images'l3.JPG");
        pictures[5] = new Bitmap(@"Library Images'l4.JPG");
        pictures[6] = new Bitmap(@"Library Images'l5.JPG");
        pictures[7] = new Bitmap(@"Library Images'l6.JPG");
        pictures[8] = new Bitmap(@"Library Images'l7.JPG");
        Random random = new Random();
        while (true)
        {
            int attempt = random.Next(0, pictures.Length);
            pictureBox1.Image = pictures[attempt];
            System.Threading.Thread.Sleep(5000);
        }
    }

示例代码非常感谢提前。。。

c#中picturebox的图像之间的转换

只需获取新的代码文件并将下面的代码粘贴到中

类似问题的原始答案，取自另一个问题的答案

答案

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Windows.Forms;
public class BlendPanel : Panel
{
private Image mImg1;
private Image mImg2;
private float mBlend;
public BlendPanel()
{
    SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.OptimizedDoubleBuffer, true);
}
public Image Image1
{
    get { return mImg1; }
    set { mImg1 = value; Invalidate(); }
}
public Image Image2
{
    get { return mImg2; }
    set { mImg2 = value; Invalidate(); }
}
public float Blend
{
    get { return mBlend; }
    set { mBlend = value; Invalidate(); }
}
protected override void OnPaint(PaintEventArgs e)
{
    if (mImg1 == null || mImg2 == null)
        e.Graphics.FillRectangle(new SolidBrush(this.BackColor), new Rectangle(0, 0, this.Width, this.Height));
    else
    {
        Rectangle rc = new Rectangle(0, 0, this.Width, this.Height);
        ColorMatrix cm = new ColorMatrix();
        ImageAttributes ia = new ImageAttributes();
        cm.Matrix33 = mBlend;
        ia.SetColorMatrix(cm);
        e.Graphics.DrawImage(mImg2, rc, 0, 0, mImg2.Width, mImg2.Height, GraphicsUnit.Pixel, ia);
        cm.Matrix33 = 1F - mBlend;
        ia.SetColorMatrix(cm);
        e.Graphics.DrawImage(mImg1, rc, 0, 0, mImg1.Width, mImg1.Height, GraphicsUnit.Pixel, ia);
    }
    base.OnPaint(e);
}
}

构建您的项目。现在，您可以将BlendPanel从工具箱顶部放到表单上

    private float mBlend;
    private int mDir = 1;
    public int count = 0;
    public Bitmap[] pictures;
    public void myPhoto()
    {
        pictures = new Bitmap[9];
        pictures[0] = new Bitmap(@"Library Images'cf3.jpg");
        pictures[1] = new Bitmap(@"Library Images'cf4.jpg");
        pictures[2] = new Bitmap(@"Library Images'l1.JPG");
        pictures[3] = new Bitmap(@"Library Images'l2.JPG");
        pictures[4] = new Bitmap(@"Library Images'l3.JPG");
        pictures[5] = new Bitmap(@"Library Images'l4.JPG");
        pictures[6] = new Bitmap(@"Library Images'l5.JPG");
        pictures[7] = new Bitmap(@"Library Images'l6.JPG");
        pictures[8] = new Bitmap(@"Library Images'l7.JPG");
        timer1.Interval = 50; //time of transition
        timer1.Tick += BlendTick;
        try
        {
            blendPanel1.Image1 = pictures[count];
            blendPanel1.Image2 = pictures[++count];
        }
        catch
        {
        }
        timer1.Enabled = true;
    }
    private void BlendTick(object sender, EventArgs e)
    {
        mBlend += mDir * 0.02F;
        if (mBlend > 1)
        {
            mBlend = 0.0F;
            if ((count + 1) < pictures.Length)
            {
                blendPanel1.Image1 = pictures[count];
                blendPanel1.Image2 = pictures[++count];
            }
            else
            {
                blendPanel1.Image1 = pictures[count];
                blendPanel1.Image2 = pictures[0];
                count = 0;
            }
        }
        blendPanel1.Blend = mBlend;
    }

您需要修改new Bitmap(@"yourimagePath");调用。构建并运行。您应该看到显示的图像从第一个图像平滑地变形到第二个图像，没有任何闪烁。

我希望它能帮助其他。。。

相关文章：