如何在 .NET 中创建动画图像

using System;
using System.IO;
using Aspose.Imaging;
using Aspose.Imaging.FileFormats.Gif;
using Aspose.Imaging.FileFormats.Gif.Blocks;
using Aspose.Imaging.ImageOptions;

string inputDir = @"./input_frames"; // Folder path for source images
string outputGif = @"./output/animated.gif";
int frameDuration = 100; // Frame time in ms (e.g., 100 = 10 FPS)

// Create GIF options
GifOptions gifOptions = new GifOptions
{
    BackgroundColor = Color.Transparent,
    FullFrame = true,
    LoopsCount = 0 // 0 = infinite looping
};

// Detect size from first frame
string[] frameFiles = Directory.GetFiles(inputDir, "*.png"); // Use "*.jpg" for JPEG, etc.
if (frameFiles.Length == 0)
    throw new Exception("No frames found in input directory.");

using (RasterImage firstFrame = (RasterImage)Image.Load(frameFiles[0]))
{
    gifOptions.Palette = ColorPaletteHelper.GetCloseImagePalette(firstFrame, 256);
    using (GifImage gif = (GifImage)Image.Create(gifOptions, firstFrame.Width, firstFrame.Height))
    {
        // Insert animation control block
        gif.InsertBlock(0, new GifGraphicsControlBlock());
        gif.SetFrameTime((ushort)frameDuration);
        // Remove placeholder page if present
        if (gif.PageCount > 0)
            gif.RemoveBlock((IGifBlock)gif.Pages[0]);

        // Add each frame
        foreach (string file in frameFiles)
        {
            using (RasterImage frame = (RasterImage)Image.Load(file))
            {
                gif.AddPage(frame);
            }
        }
        // Save the GIF
        gif.Save(outputGif);
    }
}