/// <summary>
/// 合并3张图片
/// </summary>
/// <param name="image1"></param>
/// <param name="image2"></param>
/// <param name="image3"></param>
/// <param name="layout"></param>
/// <returns></returns>
public static Image Merge3Images(Image image1, Image image2, Image image3, Merge3LayoutEnum layout = Merge3LayoutEnum.Merge1R2S1, int size = 250)
{
var width = size;
var height = size;
var pf = PixelFormat.Format32bppArgb;
using (var bg = new Bitmap(width, height, pf))
{
using (var g = Graphics.FromImage(bg))
{
g.FillRectangle((Brush)Brushes.White, 0, 0, width, height);//全幅背景为白色
switch (layout)
{
/// <summary>
/// 3张图片， 上面一个长方形，下面2个正方形并排
/// ———————————————————
/// | |
/// | R1 |
/// | |
/// ———————————————————
/// | | |
/// | S1 | S2 |
/// | | |
/// ———————————————————
/// </summary>
case Merge3LayoutEnum.Merge1R2S1:
{
using (var img1 = ZoomToSqure(image1, size))
{
var newHeight = height / 2; // =125
var newWidth = width; // =250
var srcWidth = img1.Width; // =250
var srcHeight = img1.Height * newHeight / newWidth; //=250*125/250=125
g.DrawImage(img1, new Rectangle(0, 0, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
using (var img2 = ZoomToSqure(image2, size))
{
var newHeight = height / 2; // =125
var newWidth = width / 2; // =125
var srcWidth = img2.Width; // =250
var srcHeight = img2.Height; // =250
g.DrawImage(img2, new Rectangle(0, height / 2, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
using (var img3 = ZoomToSqure(image3, size))
{
var newHeight = height / 2; // =125
var newWidth = width / 2; // =125
var srcWidth = img3.Width; // =250
var srcHeight = img3.Height; // =250
g.DrawImage(img3, new Rectangle(width / 2, height / 2, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
}
break;
/// <summary>
/// 3张图片，上面2个正方形并排，下面一个长方形
/// ———————————————————
/// | | |
/// | S1 | S2 |
/// | | |
/// ———————————————————
/// | |
/// | R1 |
/// | |
/// ———————————————————
/// </summary>
case Merge3LayoutEnum.Merge1R2S2:
{
using (var img1 = ZoomToSqure(image1, size))
{
var newHeight = height / 2; // =125
var newWidth = width / 2; // =125
var srcWidth = img1.Width; // =250
var srcHeight = img1.Height; // =250
g.DrawImage(img1, new Rectangle(0, 0, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
using (var img2 = ZoomToSqure(image2, size))
{
var newHeight = height / 2; // =125
var newWidth = width / 2; // =125
var srcWidth = img2.Width; // =250
var srcHeight = img2.Height; // =250
g.DrawImage(img2, new Rectangle(width / 2, 0, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
using (var img3 = ZoomToSqure(image3, size))
{
var newHeight = height / 2; // =125
var newWidth = width; // =250
var srcWidth = img3.Width; // =250
var srcHeight = img3.Height * newHeight / newWidth; //=250*125/250=125
g.DrawImage(img3, new Rectangle(0, height / 2, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
}
break;
/// <summary>
/// 3张图片，上面2个正方形并排，下面一个长方形
/// ———————————————————
/// | | |
/// | | S1 |
/// | | |
/// | R1 |—————————
/// | | |
/// | | S2 |
/// | | |
/// ———————————————————
/// </summary>
case Merge3LayoutEnum.Merge1R2S3:
{
using (var img1 = ZoomToSqure(image1, size))
{
var newHeight = height; // =250
var newWidth = width / 2; // =125
var srcHeight = img1.Height; //=250
var srcWidth = img1.Width * newWidth / newHeight; // =250*125/250=125;
g.DrawImage(img1, new Rectangle(0, 0, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
using (var img2 = ZoomToSqure(image2, size))
{
var newHeight = height / 2; // =125
var newWidth = width / 2; // =125
var srcWidth = img2.Width; // =250
var srcHeight = img2.Height; // = 250
g.DrawImage(img2, new Rectangle(width / 2, 0, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
using (var img3 = ZoomToSqure(image3, size))
{
var newHeight = height / 2; // =125
var newWidth = width / 2; // =125
var srcWidth = img3.Width; // =250
var srcHeight = img3.Height; // =250
g.DrawImage(img3, new Rectangle(width / 2, height / 2, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
}
break;
/// <summary>
/// 3张图片，上面2个正方形并排，下面一个长方形
/// ———————————————————
/// | | |
/// | S2 | |
/// | | |
/// |—————————| R1 |
/// | | |
/// | S2 | |
/// | | |
/// ———————————————————
/// </summary>
case Merge3LayoutEnum.Merge1R2S4:
{
using (var img1 = ZoomToSqure(image1, size))
{
var newHeight = height / 2; // =125
var newWidth = width / 2; // =125
var srcWidth = img1.Width; // =250
var srcHeight = img1.Height; // =250
g.DrawImage(img1, new Rectangle(0, 0, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
using (var img2 = ZoomToSqure(image2, size))
{
var newHeight = height / 2; // =125
var newWidth = width / 2; // =125
var srcWidth = img2.Width; // =250
var srcHeight = img2.Height; // =250
g.DrawImage(img2, new Rectangle(0, height / 2, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
using (var img3 = ZoomToSqure(image3, size))
{
var newHeight = height; // =250
var newWidth = width / 2; // =125
var srcHeight = img3.Height; //=250
var srcWidth = img3.Width * newWidth / newHeight; // =250*125/250=125;
g.DrawImage(img3, new Rectangle(width / 2, 0, newWidth, newHeight), new Rectangle(0, 0, srcWidth, srcHeight), GraphicsUnit.Pixel);
}
}
break;
}
g.Save();
image1.Dispose();
image2.Dispose();
image3.Dispose();
}
using (var ms = new MemoryStream())
{
bg.Save(ms, ImageFormat.Png);
var buffers = ms.ToArray();
return(ConvertToImage(buffers));
}
}
}
/// <summary>
/// 合并3张网络图片
/// </summary>
/// <param name="image1Url"></param>
/// <param name="image2Url"></param>
/// <param name="image3Url"></param>
/// <param name="layout"></param>
/// <returns></returns>
public static byte[] Merge3Images(string image1Url, string image2Url, string image3Url, Merge3LayoutEnum layout = Merge3LayoutEnum.Merge1R2S1, int size = 250)
{
var image1 = Download(image1Url);
var image2 = Download(image2Url);
var image3 = Download(image3Url);
return(Merge3Images(image1, image2, image3, layout, size));
}
/// <summary>
/// 合并3张图片
/// </summary>
/// <param name="image1"></param>
/// <param name="image2"></param>
/// <param name="image3"></param>
/// <param name="layout"></param>
/// <returns></returns>
public static byte[] Merge3Images(byte[] image1, byte[] image2, byte[] image3, Merge3LayoutEnum layout = Merge3LayoutEnum.Merge1R2S1, int size = 250)
{
var image = Merge3Images(ConvertToImage(image1), ConvertToImage(image2), ConvertToImage(image3), layout, size);
var buffers = ConvertToByte(image);
image.Dispose();
return(buffers);
}
private static void testMerge3(string type, string img1, string img2, string img3, Merge3LayoutEnum layout = Merge3LayoutEnum.Merge1R2S1)
{
var m1 = MergeProvider.Merge3Images(img1, img2, img3, layout, 250);
var image1 = MergeProvider.ConvertToImage(m1);
var m1Path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, type + "-" + layout.ToString() + ".png");
if (File.Exists(m1Path))
{
File.Delete(m1Path);
}
image1.Save(m1Path);
}
