public void SetEye(Vector3 eye)
{
ImageArray imageArray = (ImageArray)Image;
for (int level = 0; level < imageArray.Depth; level++)
{
float levelScale = (float)(1 << (level + 1));
Vector2 offset = eye.Xy / levelScale;
Index2D index = GetInitialIndex(imageArray[level], Image.Size.Width);
index.Offset((int)offset.X, (int)offset.Y);
Region2D bounds = imageArray[level].Bounds;
if (bounds.Index != index)
{
imageArray[level].Bounds = new Region2D(index, bounds.Size);
Dirty(level);
}
}
}
public static Index2D[] GetCircumIndices(Index2D centerIndex)
{
var circumIndices = new Index2D[]
{
centerIndex.Offset(0,2),
centerIndex.Offset(1,1),
centerIndex.Offset(1,-1),
centerIndex.Offset(0,-2),
centerIndex.Offset(-1,-1),
centerIndex.Offset(-1,1)
};
return circumIndices;
}
