public ArrayList getPointList(long handId) {
ArrayList curList;
if (_pointLists.containsKey(handId)) curList = (ArrayList) _pointLists.get(handId);
else {
curList = new ArrayList(_maxPoints);
_pointLists.put(handId, curList);
}
return curList;
}
public void draw() {
if (_pointLists.size() <= 0) return;
pushStyle();
noFill();
PVector vec;
PVector firstVec;
PVector screenPos = new PVector();
int colorIndex = 0;
// draw the hand lists
Iterator<Map.Entry> itrList = _pointLists.entrySet().iterator();
while (itrList.hasNext()) {
strokeWeight(2);
stroke(_colorList[colorIndex % (_colorList.length - 1)]);
ArrayList curList = (ArrayList) itrList.next().getValue();
// draw line
firstVec = null;
Iterator<PVector> itr = curList.iterator();
beginShape();
while (itr.hasNext()) {
vec = itr.next();
if (firstVec == null) firstVec = vec;
// calc the screen pos
context.convertRealWorldToProjective(vec, screenPos);
vertex(screenPos.x, screenPos.y);
}
endShape();
// draw current pos of the hand
if (firstVec != null) {
strokeWeight(8);
context.convertRealWorldToProjective(firstVec, screenPos);
point(screenPos.x, screenPos.y);
}
colorIndex++;
}
popStyle();
}
/** Get a class loader. Create in a restricted context */
synchronized AppletClassLoader getClassLoader(final URL codebase, final String key) {
AppletClassLoader c = classloaders.get(key);
if (c == null) {
AccessControlContext acc = getAccessControlContext(codebase);
c =
AccessController.doPrivileged(
new PrivilegedAction<AppletClassLoader>() {
@Override
public AppletClassLoader run() {
AppletClassLoader ac = createClassLoader(codebase);
/* Should the creation of the classloader be
* within the class synchronized block? Since
* this class is used by the plugin, take care
* to avoid deadlocks, or specialize
* AppletPanel within the plugin. It may take
* an arbitrary amount of time to create a
* class loader (involving getting Jar files
* etc.) and may block unrelated applets from
* finishing createAppletThread (due to the
* class synchronization). If
* createAppletThread does not finish quickly,
* the applet cannot process other messages,
* particularly messages such as destroy
* (which timeout when called from the browser).
*/
synchronized (getClass()) {
AppletClassLoader res = classloaders.get(key);
if (res == null) {
classloaders.put(key, ac);
return ac;
} else {
return res;
}
}
}
},
acc);
}
return c;
}
public void OnPointDestroy(long nID) {
println("OnPointDestroy, handId: " + nID);
// remove list
if (_pointLists.containsKey(nID)) _pointLists.remove(nID);
}
/** Flush a class loader. */
public static synchronized void flushClassLoader(String key) {
classloaders.remove(key);
}
