static SwfRectIntData CalculateBitmapTrimmedRect(SwfLibraryBitmapDefine bitmap)
{
var rect = new SwfRectIntData {
xMin = bitmap.Width,
yMin = bitmap.Height,
xMax = 0,
yMax = 0
};
for (var i = 0; i < bitmap.Height; ++i)
{
for (var j = 0; j < bitmap.Width; ++j)
{
var a = bitmap.ARGB32[(j + i * bitmap.Width) * 4];
if (a > 0)
{
rect.xMin = Mathf.Min(j, rect.xMin);
rect.yMin = Mathf.Min(i, rect.yMin);
rect.xMax = Mathf.Max(j + 1, rect.xMax);
rect.yMax = Mathf.Max(i + 1, rect.yMax);
}
}
}
return(rect.width < 1 || rect.height < 1
? new SwfRectIntData(0, 0, 1, 1)
: rect);
}
static SwfBitmapData ConvertBitmap(ushort id, SwfLibraryBitmapDefine bitmap)
{
var trimmed_rect = bitmap.Redirect > 0
? new SwfRectIntData(bitmap.Width, bitmap.Height)
: CalculateBitmapTrimmedRect(bitmap);
return(new SwfBitmapData {
Id = id,
ARGB32 = bitmap.ARGB32,
Redirect = bitmap.Redirect,
RealWidth = bitmap.Width,
RealHeight = bitmap.Height,
TrimmedRect = trimmed_rect
});
}
