如何使用Visual Studio c#移动图片框的特定部分

本文关键字：定部 Visual 何使用 Studio 移动 | 更新日期: 2023-09-27 18:14:28

我想只移动我的图片框的某一部分，但我只能移动某一部分。目前我可以从左到右移动它，但我只想移动它的尖端。

    private float angle = 0.0f;
    Image image;
    private void Form1_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Right) angle += 1;
        else if (e.KeyCode == Keys.Left) angle -= 1;
        int a = pictureBox1.Location.X;
        int b = pictureBox1.Location.Y;
        if (e.KeyCode == Keys.Right) a += 5;
        else if (e.KeyCode == Keys.Left) a -= 5;
        pictureBox2.Location = new Point(a, b);
        RotateImage(pictureBox1, image, angle);
    }
    private void RotateImage(PictureBox pb, Image img, float angle)
    {
        //Store our old image so we can delete it
        Image oldImage = pb.Image;
        pb.Image = RotateImage(img, angle);
        if (oldImage != null)
            oldImage.Dispose();
    }
    public static Bitmap RotateImage(Image image, float angle)
    {
        return RotateImageFinal(image, new PointF((float)image.Width / 2, (float)image.Height / 2), angle);
    }
    public static Bitmap RotateImageFinal(Image image, PointF offset, float angle)
    {
        //create a new empty bitmap to hold rotated image
        Bitmap rotatedBmp = new Bitmap(image.Width, image.Height);
        rotatedBmp.SetResolution(image.HorizontalResolution, image.VerticalResolution);
        //make a graphics object from the empty bitmap
        Graphics g = Graphics.FromImage(rotatedBmp);
        //Put the rotation point in the center of the image
        g.TranslateTransform(offset.X, offset.Y);
        //rotate the image
        g.RotateTransform(angle);
        //move the image back
        g.TranslateTransform(-offset.X, -offset.Y);
        //draw passed in image onto graphics object
        g.DrawImage(image, new PointF(0, 0));
        return rotatedBmp;
    }
    private void Form1_Load(object sender, EventArgs e)
    {   //Just to store the address of the 'arrow' image.
        string path = Directory.GetCurrentDirectory();
        image = new Bitmap(path + "/img/arrow.bmp");
    }

我想要倾斜的对象的PS，我感兴趣的是固定底部的部分，同时只移动顶部https://i.stack.imgur.com/aiJCF.jpg

如何使用Visual Studio c#移动图片框的特定部分

我对你的问题很感兴趣，所以我决定花一些时间在c#中搜索更多关于图像旋转的信息。这就是结果。

    private float angle = 0.0f;
    Image image;
    private void Form1_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Right) angle+=1;
        else if (e.KeyCode == Keys.Left) angle-=1;
        int a = ballPB.Location.X;
        int b = ballPB.Location.Y;
        if (e.KeyCode == Keys.Right) a += 5;
        else if (e.KeyCode == Keys.Left) a -= 5;
        ballPB.Location = new Point(a, b);
        RotateImage(arrowPB, image, angle);
    }
    private void RotateImage(PictureBox pb, Image img, float angle)
    {
        //Store our old image so we can delete it
        Image oldImage = pb.Image;
        pb.Image = RotateImage(img, angle);
        if (oldImage != null)
            oldImage.Dispose();
    }
    public static Bitmap RotateImage(Image image, float angle)
    {
        return RotateImageFinal(image, new PointF((float)image.Width / 2, (float)image.Height / 2), angle);
    }
    public static Bitmap RotateImageFinal(Image image, PointF offset, float angle)
    {
        //create a new empty bitmap to hold rotated image
        Bitmap rotatedBmp = new Bitmap(image.Width, image.Height);
        rotatedBmp.SetResolution(image.HorizontalResolution, image.VerticalResolution);
        //make a graphics object from the empty bitmap
        Graphics g = Graphics.FromImage(rotatedBmp);
        //Put the rotation point in the center of the image
        g.TranslateTransform(offset.X, offset.Y);
        //rotate the image
        g.RotateTransform(angle);
        //move the image back
        g.TranslateTransform(-offset.X, -offset.Y);
        //draw passed in image onto graphics object
        g.DrawImage(image, new PointF(0, 0));
        return rotatedBmp;
    }
    private void Form1_Load(object sender, EventArgs e)
    {   //Just to store the address of the 'arrow' image.
        string path = Directory.GetCurrentDirectory();
        image = new Bitmap(path + "''img''arrow.png");
    }

逻辑的功劳归于MusicMonkey5555 (http://www.codeproject.com/Articles/58815/C-Image-PictureBox-Rotations)。如果上面的代码不是很清楚，您甚至可以从链接下载源代码。好运！

相关文章：