void UpdateRenderedSpriteInner(CPos cell, RendererCellContents content)
{
if (content.Density > 0)
{
var clear = FindClearSides(cell, content.Type);
if (clear == ClearSides.None)
{
var maxDensity = ResourceLayer.GetMaxDensity(content.Type);
var index = content.Density > maxDensity / 2 ? 1 : 0;
UpdateSpriteLayers(cell, content.Sequence, index, content.Palette);
}
else if (SpriteMap.TryGetValue(clear, out var index))
{
UpdateSpriteLayers(cell, content.Sequence, index, content.Palette);
}
else
{
throw new InvalidOperationException($"SpriteMap does not contain an index for ClearSides type '{clear}'");
}
}
else
{
UpdateSpriteLayers(cell, null, 0, null);
}
}