public RenderTheme(int mapBackground, float baseTextSize, Rule[] rules, int levels, bool mapsforgeTheme)
{
if (rules == null)
{
throw new System.ArgumentException("rules missing");
}
mMapBackground = mapBackground;
mBaseTextSize = baseTextSize;
mLevels = levels;
mRules = rules;
mMapsforgeTheme = mapsforgeTheme;
mStyleCache = new RenderStyleCache[3];
mStyleCache[0] = new RenderStyleCache(this, Rule.Element.NODE);
mStyleCache[1] = new RenderStyleCache(this, Rule.Element.LINE);
mStyleCache[2] = new RenderStyleCache(this, Rule.Element.POLY);
}
//AtomicInteger hitCount = new AtomicInteger(0);
//AtomicInteger missCount = new AtomicInteger(0);
//AtomicInteger sameCount = new AtomicInteger(0);
public override RenderStyle[] matchElement(GeometryType geometryType, TagSet tags, int zoomLevel)
{
/* list of items in cache */
RenderStyleItem ris = null;
/* the item matching tags and zoomlevel */
RenderStyleItem ri = null;
int type = geometryType.nativeInt;
if (type < 1 || type > 3)
{
log.debug("invalid geometry type for RenderTheme " + geometryType.name());
return(null);
}
RenderStyleCache cache = mStyleCache[type - 1];
/* NOTE: maximum zoom level supported is 32 */
int zoomMask = 1 << zoomLevel;
lock (cache)
{
if ((cache.prevItem == null) || (cache.prevItem.zoom & zoomMask) == 0)
{
/* previous instructions zoom does not match */
cache.cacheKey.set(tags, null);
}
else
{
/* compare if tags match previous instructions */
if (cache.cacheKey.set(tags, cache.prevItem.key))
{
ri = cache.prevItem;
//log.debug(hitCount + "/" + sameCount.incrementAndGet()
// + "/" + missCount + "same hit " + tags);
}
}
if (ri == null)
{
/* get instruction for current cacheKey */
ris = cache.RenderInstructions;
for (ri = ris; ri != null; ri = ri.next)
{
if ((ri.zoom & zoomMask) != 0)
{
/* cache hit */
//log.debug(hitCount.incrementAndGet()
// + "/" + sameCount + "/" + missCount
// + " cache hit " + tags);
break;
}
}
}
if (ri == null)
{
/* cache miss */
//missCount.incrementAndGet();
IList <RenderStyle> matches = cache.instructionList;
matches.Clear();
foreach (Rule rule in mRules)
{
rule.matchElement(cache.matchType, cache.cacheKey.mTags, zoomMask, matches);
}
int size = matches.Count;
if (size > 1)
{
for (int i = 0; i < size - 1; i++)
{
RenderStyle r = matches[i];
for (int j = i + 1; j < size; j++)
{
if (matches[j] == r)
{
//JAVA TO C# CONVERTER WARNING: The .NET Type.FullName property will not always yield results identical to the Java Class.getName method:
log.debug("fix duplicate instruction! " + Arrays.deepToString(cache.cacheKey.mTags) + " zoom:" + zoomLevel + " " + r.GetType().FullName);
matches.RemoveAt(j--);
size--;
}
}
}
}
/* check if same instructions are used in another level */
for (ri = ris; ri != null; ri = ri.next)
{
if (size == 0)
{
if (ri.list != null)
{
continue;
}
/* both matchinglists are empty */
break;
}
if (ri.list == null)
{
continue;
}
if (ri.list.Length != size)
{
continue;
}
int i = 0;
foreach (RenderStyle r in ri.list)
{
if (r != matches[i])
{
break;
}
i++;
}
if (i == size)
/* both matching lists contain the same items */
{
break;
}
}
if (ri != null)
{
/* we found a same matchting list on another zoomlevel add
* this zoom level to the existing RenderInstructionItem. */
ri.zoom |= zoomMask;
//log.debug(zoomLevel + " same instructions " + size + " "
// + Arrays.deepToString(tags));
}
else
{
//log.debug(zoomLevel + " new instructions " + size + " "
// + Arrays.deepToString(tags));
ri = new RenderStyleItem(this);
ri.zoom = zoomMask;
if (size > 0)
{
ri.list = new RenderStyle[size];
matches.toArray(ri.list);
}
/* attach this list to the one found for MatchingKey */
if (ris != null)
{
ri.next = ris.next;
ri.key = ris.key;
ris.next = ri;
}
else
{
ri.key = new MatchingCacheKey(cache.cacheKey);
cache.cache.put(ri.key, ri);
}
}
}
cache.prevItem = ri;
}
return(ri.list);
}
