public void Match(MapElement mapElement) // ( RenderCallback renderCallback, List<Tag> tags, byte zoomLevel )
{
MatchingCacheKey matchingCacheKey = new MatchingCacheKey(mapElement.Tags, mapElement.Tile.ZoomFactor);
List <RenderInstruction> matchingList;
if (this.matchingCache.TryGetValue(matchingCacheKey, out matchingList))
{
// cache hit
for (int i = 0, n = matchingList.Count; i < n; ++i)
{
mapElement.RenderInstructions.AddRange(matchingList);
}
return;
}
// cache miss
matchingList = new List <RenderInstruction>();
for (int i = 0, n = this.rulesList.Count; i < n; ++i)
{
this.rulesList[i].Match(mapElement);
}
this.matchingCache[matchingCacheKey] = matchingList;
}
public override bool Equals(object obj)
{
if (this == obj)
{
return(true);
}
else if (!(obj is MatchingCacheKey))
{
return(false);
}
MatchingCacheKey other = (MatchingCacheKey)obj;
if (this.tags == null)
{
if (other.tags != null)
{
return(false);
}
}
else if (!this.tags.Equals(other.tags))
{
return(false);
}
if (this.zoomLevel != other.zoomLevel)
{
return(false);
}
return(true);
}