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Use a better way to crop Sprite

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This commit is contained in:
Perfare 2021-12-04 08:44:33 +08:00
parent d4060cde6d
commit e501940f03
2 changed files with 16 additions and 20 deletions
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2
AssetStudio/Classes/Sprite.cs
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@ -197,7 +197,7 @@ namespace AssetStudio
public Vector2 m_Offset;
public Vector4 m_Border;
public float m_PixelsToUnits;
public Vector2 m_Pivot;
public Vector2 m_Pivot = new Vector2(0.5f, 0.5f);
public uint m_Extrude;
public bool m_IsPolygon;
public KeyValuePair<Guid, long> m_RenderDataKey;

28
AssetStudioUtility/SpriteHelper.cs
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@ -89,30 +89,26 @@ namespace AssetStudio
var polygons = triangles.Select(x => new Polygon(new LinearLineSegment(x.Select(y => new PointF(y.X, y.Y)).ToArray()))).ToArray();
IPathCollection path = new PathCollection(polygons);
var matrix = Matrix3x2.CreateScale(m_Sprite.m_PixelsToUnits);
var version = m_Sprite.version;
if (version[0] < 5
|| (version[0] == 5 && version[1] < 4)
|| (version[0] == 5 && version[1] == 4 && version[2] <= 1)) //5.4.1p3 down
{
matrix *= Matrix3x2.CreateTranslation(m_Sprite.m_Rect.width * 0.5f - textureRectOffset.X, m_Sprite.m_Rect.height * 0.5f - textureRectOffset.Y);
}
else
{
matrix *= Matrix3x2.CreateTranslation(m_Sprite.m_Rect.width * m_Sprite.m_Pivot.X - textureRectOffset.X, m_Sprite.m_Rect.height * m_Sprite.m_Pivot.Y - textureRectOffset.Y);
}
path = path.Transform(matrix);
var graphicsOptions = new GraphicsOptions
{
Antialias = false,
AlphaCompositionMode = PixelAlphaCompositionMode.DestOut
};
var options = new DrawingOptions
{
GraphicsOptions = new GraphicsOptions()
{
AlphaCompositionMode = PixelAlphaCompositionMode.DestOut
}
GraphicsOptions = graphicsOptions
};
var rectP = new RectangularPolygon(0, 0, rect.Width, rect.Height);
spriteImage.Mutate(x => x.Fill(options, SixLabors.ImageSharp.Color.Red, rectP.Clip(path)));
using (var mask = new Image<Argb32>(rect.Width, rect.Height, SixLabors.ImageSharp.Color.Black))
{
mask.Mutate(x => x.Fill(options, SixLabors.ImageSharp.Color.Red, path));
var bursh = new ImageBrush(mask);
spriteImage.Mutate(x => x.Fill(graphicsOptions, bursh));
spriteImage.Mutate(x => x.Flip(FlipMode.Vertical));
return spriteImage;
}
}
catch
{
// ignored