/// <summary>
/// Gets final layer opacity taking into consideration parent groups.
/// </summary>
/// <param name="layer">Layer to check.</param>
/// <returns>Float from range 0-1.</returns>
public static float GetFinalLayerOpacity(Layer layer, LayerStructure structure)
{
if (layer.Opacity == 0)
{
return(0f);
}
var group = structure.GetGroupByLayer(layer.LayerGuid);
GuidStructureItem groupToCheck = group;
float finalOpacity = layer.Opacity;
while (groupToCheck != null)
{
finalOpacity *= groupToCheck.Opacity;
groupToCheck = groupToCheck.Parent;
}
return(Math.Clamp(finalOpacity, 0f, 1f));
}
/// <summary>
/// Gets final layer IsVisible taking into consideration group visibility.
/// </summary>
/// <param name="layer">Layer to check.</param>
/// <returns>True if is visible, false if at least parent is not visible or layer itself is invisible.</returns>
public static bool GetFinalLayerIsVisible(Layer layer, LayerStructure structure)
{
if (!layer.IsVisible)
{
return(false);
}
var group = structure.GetGroupByLayer(layer.GuidValue);
bool atLeastOneParentIsInvisible = false;
GuidStructureItem groupToCheck = group;
while (groupToCheck != null)
{
if (!groupToCheck.IsVisible)
{
atLeastOneParentIsInvisible = true;
break;
}
groupToCheck = groupToCheck.Parent;
}
return(!atLeastOneParentIsInvisible);
}
