/// <summary>
/// Merges the given newProperties with this one.
/// </summary>
/// <param name="newProperties"></param>
/// <returns></returns>
internal MapCSSRuleProperties Merge(MapCSSRuleProperties newProperties)
{
// determine the tightest zoom.
int minZoom = this.MinZoom;
int maxZoom = this.MaxZoom;
if (this.MinZoom < newProperties.MinZoom)
{
minZoom = newProperties.MinZoom;
}
if (this.MaxZoom > newProperties.MaxZoom)
{
maxZoom = newProperties.MaxZoom;
}
// create a new rule and merge properties from both.
var rule = new MapCSSRuleProperties(minZoom, maxZoom);
foreach (var key in this.GetKeys())
{
object value;
this.TryGetProperty(key, out value);
rule.AddProperty(key, value);
}
foreach (var key in newProperties.GetKeys())
{
object value;
newProperties.TryGetProperty(key, out value);
rule.AddProperty(key, value);
}
return(rule);
}
