C# 合并 4x 图像创建单个图像但使用这些特殊图像不起作用

Question

我已经编码，这样 4x 图像将合并为单个图像，尺寸将相加，以便最终图像确保它始终有 space 来容纳所有 4 个图像。

// Determining width and height

int widthF = Math.Max((globeVar.width1 + globeVar.width2), (globeVar.width3 + globeVar.width4));
int heightF = Math.Max((globeVar.height1 + globeVar.height2), (globeVar.height3 + globeVar.height4));


//Getting drawing objects ready
Image img = new Bitmap(widthF, heightF);
Graphics drawing = Graphics.FromImage(img);

//paint the background to check where image is not merged
drawing.Clear(Color.Blue);

drawing.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;

// Draw the image to the graphics to create the new image 
// Which will be used in the onpaint background                 

drawing.DrawImage(globeVar.image1, 0, 0);
drawing.DrawImage(globeVar.image2, (img.Width) / 2, 0);
drawing.DrawImage(globeVar.image3, 0, (img.Height) / 2);
drawing.DrawImage(globeVar.image4, (img.Width) / 2, (img.Height) / 2);
drawing.Save();

img.Save(@globeVar.savePath, ImageFormat.Png);                

drawing.Dispose();

现在代码实际上适用于以下 4 张图像：

https://imgur.com/a/4yrPWIs

但是当我使用这些图像时，:

https://imgur.com/a/YBSEyBN

合并成这样：

https://imgur.com/a/bhnkoi1

我到底错过了什么？

编辑：

我用来选择图片的代码：

 //Getting The Image From The System
        OpenFileDialog open = new OpenFileDialog();
        open.Filter =
          "Image Files(*.jpg; *.jpeg; *.gif; *.png; *.bmp)|*.jpg; *.jpeg; *.gif; *.png; *.bmp";

        if (open.ShowDialog() == DialogResult.OK)
        {

            Bitmap img = new Bitmap(open.FileName);

            globeVar.image4 = Image.FromFile(open.FileName);

            globeVar.width4 = img.Width;
            globeVar.height4 = img.Height;


        }

这是我用于全局变量的代码，它帮助我在项目中的任何地方使用它们：

 public static class globeVar
{
    public static int width1 = 0;
    public static int width2 = 0;
    public static int width3 = 0;
    public static int width4 = 0;
    public static int height1 = 0;
    public static int height2 = 0;
    public static int height3 = 0;
    public static int height4 = 0;
    public static Image image1;
    public static Image image2;
    public static Image image3;
    public static Image image4;
    public static string savePath = "C:\Users\Suleman\Desktop\ImageMerge\Sample Images\test.png";
    //public static string savePath = "test.png";


}

Answer 1

我自己找到了答案。看起来 DrawImage 方法没有考虑图像的默认大小。所以我必须定义它们的原始大小才能成功合并。

我刚刚更新：

 drawing.DrawImage(globeVar.image1, 0, 0, globeVar.width1, globeVar.height1);
 drawing.DrawImage(globeVar.image2, (img.Width) / 2, 0, globeVar.width2, globeVar.height2);
 drawing.DrawImage(globeVar.image3, 0, (img.Height) / 2, globeVar.width3, globeVar.height3);
 drawing.DrawImage(globeVar.image4, (img.Width) / 2, (img.Height) / 2, globeVar.width4, globeVar.height4);

来自文档：

我之前用过： DrawImage(Image,‖Int32,‖Int32)

我现在用的是： DrawImage(Image,‖Int32,‖Int32,‖Int32,‖Int32)

C# 合并 4x 图像创建单个图像但使用这些特殊图像不起作用

C# Merging 4x images create single image but using these special images does not work

c#

winforms

visual-studio-2015