c# - Silverlight 中的 Spritesheet

Question

有没有人有在 Silverlight 中使用 spritesheet 的例子？我想剪辑图像，然后在按下按钮时跳转到下一帧。 (如果用户一直点击按钮，它看起来就像一个动画)。我环顾四周，但没有找到我要找的东西。感谢您的帮助。

Answer 1

以下将完全满足您的需求。您可以使用键盘上的向上 ↑ 和向下 ↓ 键在动画中向前和向后导航。

XAML

<Rectangle x:Name="imgRect">
    <Rectangle.Fill>
        <ImageBrush x:Name="imgBrush" ImageSource="walking_spritesheet.png" Stretch="None" AlignmentX="Left" AlignmentY="Top" />                    
    </Rectangle.Fill>
</Rectangle>

C#

        imgRect.Width = 240; //Set the width of an individual sprite
        imgRect.Height = 296; //Set the height of an individual sprite
        const int ximages = 6; //The number of sprites in each row
        const int yimages = 5; //The number of sprites in each column
        int currentRow = 0;
        int currentColumn = 0;

        TranslateTransform offsetTransform = new TranslateTransform();

        KeyDown += delegate(object sender, KeyEventArgs e)
        {
            switch (e.Key)
            {
                case Key.Up:
                    currentColumn--;
                    if (currentColumn < 0)
                    {
                        currentColumn = ximages -1;
                        if (currentRow == 0)
                        {
                            currentRow = yimages - 1;
                        }
                        else
                        {
                            currentRow--;
                        }
                    }                        
                    break;
                case Key.Down:
                    currentColumn++;
                    if (currentColumn == ximages)
                    {
                        currentColumn = 0;
                        if (currentRow == yimages - 1)
                        {
                            currentRow = 0;
                        }
                        else
                        {
                            currentRow++;
                        }
                    }
                    break;
                default:
                    break;
            }

            offsetTransform.X = -imgRect.Width * currentColumn;
            offsetTransform.Y = -imgRect.Height * currentRow;
            imgBrush.Transform = offsetTransform;

为了进行测试，请尝试使用以下图像 (1440x1480):