f@0: /*  
f@0:  CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
f@0:   
f@0:  Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)
f@0: 
f@0:  This program is free software: you can redistribute it and/or modify
f@0:  it under the terms of the GNU General Public License as published by
f@0:  the Free Software Foundation, either version 3 of the License, or
f@0:  (at your option) any later version.
f@0: 
f@0:  This program is distributed in the hope that it will be useful,
f@0:  but WITHOUT ANY WARRANTY; without even the implied warranty of
f@0:  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
f@0:  GNU General Public License for more details.
f@0: 
f@0:  You should have received a copy of the GNU General Public License
f@0:  along with this program.  If not, see <http://www.gnu.org/licenses/>.
f@0: */  
f@0: 
f@0: 
f@0: package uk.ac.qmul.eecs.ccmi.haptics;
f@0: 
f@0: import java.awt.Dimension;
f@0: import java.awt.Toolkit;
f@0: import java.awt.geom.Line2D;
f@0: import java.io.File;
f@0: import java.io.IOException;
f@0: import java.net.URL;
f@0: import java.util.ArrayList;
f@0: import java.util.BitSet;
f@0: import java.util.HashMap;
f@0: import java.util.ListIterator;
f@0: 
f@0: import uk.ac.qmul.eecs.ccmi.utils.OsDetector;
f@0: import uk.ac.qmul.eecs.ccmi.utils.PreferencesService;
f@0: import uk.ac.qmul.eecs.ccmi.utils.ResourceFileWriter;
f@0: 
f@0: class FalconHaptics extends Thread implements Haptics {
f@0: 	static Haptics createInstance(HapticListenerThread listener) {
f@0: 		if(OsDetector.has64BitJVM()){// no 64 native library supported yet
f@0: 			return null;
f@0: 		}
f@0: 		
f@0: 		if(OsDetector.isWindows()){
f@0: 			/* create a directory for the dll distributed with HAPI library */
f@0: 			String libDir = PreferencesService.getInstance().get("dir.libs", System.getProperty("java.io.tmpdir"));
f@0: 			File hapiDir = new File(libDir,"HAPI");
f@0: 			hapiDir.mkdir();
f@0: 			
f@0: 			/* try to load .dll's. First copy it in the home/ccmi_editor_data/lib directory  */
f@0: 			String[] dlls = {"HAPI/pthreadVC2.dll","HAPI/FreeImage.dll","HAPI/freeglut.dll",
f@0: 					"HAPI/H3DUtil_vc9.dll","HAPI/HAPI_vc9.dll","FalconHaptics.dll"}; 
f@0: 			ResourceFileWriter fileWriter = new ResourceFileWriter();
f@0: 			for(String dll : dlls){
f@0: 				URL url = OmniHaptics.class.getResource(dll);
f@0: 				fileWriter.setResource(url);
f@0: 				fileWriter.writeOnDisk(libDir, dll);
f@0: 				String path = fileWriter.getFilePath();
f@0: 				try{
f@0: 					if(path == null)
f@0: 						throw new UnsatisfiedLinkError(dll+" missing");
f@0: 					System.load( path );
f@0: 				}catch(UnsatisfiedLinkError e){
f@0: 					System.err.println(e.getMessage());
f@0: 					e.printStackTrace();
f@0: 					return null; 
f@0: 				}
f@0: 			}
f@0: 		}else{
f@0: 			return null;
f@0: 		}
f@0: 		
f@0: 		FalconHaptics falcon = new FalconHaptics("FalconHaptics");
f@0: 		falcon.hapticListener = listener;
f@0: 		/* start up the listener which immediately stops, waiting for commands */
f@0: 		if(!falcon.hapticListener.isAlive())
f@0: 			falcon.hapticListener.start();
f@0: 		/* start up the haptics thread which issues commands from the java to the c++ thread */
f@0: 		falcon.start();
f@0: 		synchronized(falcon){
f@0: 			try {
f@0: 				falcon.wait();
f@0: 			}catch (InterruptedException ie) {
f@0: 				throw new RuntimeException(ie); // must never happen 
f@0: 			}
f@0: 		}
f@0: 		if(falcon.initFailed)
f@0: 			return null;
f@0: 		else 
f@0: 			return falcon;
f@0: 	}
f@0: 	
f@0: 	private FalconHaptics(String threadName){
f@0: 		super(threadName);
f@0: 		
f@0: 		nodes = new HashMap<String,ArrayList<Node>>();
f@0: 		edges = new HashMap<String,ArrayList<Edge>>();
f@0: 		currentNodes = Empties.EMPTY_NODE_LIST;
f@0: 		currentEdges = Empties.EMPTY_EDGE_LIST;
f@0: 		
f@0: 		attractTo = 0;
f@0: 	}
f@0: 	
f@0: 	private native int initFalcon(int width, int height) throws IOException ;
f@0: 	
f@0: 	@Override
f@0: 	public void addNewDiagram(String diagramName) {
f@0: 		ArrayList<Node> cNodes = new ArrayList<Node>(30);
f@0: 		ArrayList<Edge> cEdges = new ArrayList<Edge>(30);
f@0: 		nodes.put(diagramName, cNodes);
f@0: 		edges.put(diagramName, cEdges);
f@0: 		
f@0: 		synchronized(this){
f@0: 			currentNodes = cNodes;
f@0: 			currentEdges = cEdges;
f@0: 			collectionsChanged = true;
f@0: 		}
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void switchDiagram(String diagramName) {
f@0: 		if(!nodes.containsKey(diagramName))
f@0: 			throw new IllegalArgumentException("Diagram not found among added diagrams:" + diagramName);
f@0: 		
f@0: 		currentNodes = nodes.get(diagramName);
f@0: 		currentEdges = edges.get(diagramName);
f@0: 		collectionsChanged = true;
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void removeDiagram(String diagramNameToRemove,
f@0: 			String diagramNameOfNext) {
f@0: 		if(!nodes.containsKey(diagramNameToRemove))
f@0: 			throw new IllegalArgumentException("Diagram not found among added diagrams:" + diagramNameToRemove);
f@0: 		
f@0: 		nodes.remove(diagramNameToRemove);
f@0: 		edges.remove(diagramNameToRemove);
f@0: 		
f@0: 		if(diagramNameOfNext == null){
f@0: 			currentNodes = Empties.EMPTY_NODE_LIST;	
f@0: 			currentEdges = Empties.EMPTY_EDGE_LIST;
f@0: 		}else {
f@0: 			if(!nodes.containsKey(diagramNameOfNext))
f@0: 				throw new IllegalArgumentException("Diagram not found among added diagrams:" + diagramNameOfNext);
f@0: 			currentNodes = nodes.get(diagramNameOfNext);
f@0: 			currentEdges = edges.get(diagramNameOfNext);
f@0: 		}
f@0: 		collectionsChanged = true;
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void addNode(double x, double y, int nodeHashCode, String diagramName) {
f@0: 		Node n = new Node(x,y,nodeHashCode, nodeHashCode);
f@0: 		if(diagramName == null){
f@0: 			currentNodes.add(n);
f@0: 		}else{
f@0: 			nodes.get(diagramName).add(n);
f@0: 		}
f@0: 		collectionsChanged = true;
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void removeNode(int nodeHashCode, String diagramName) {
f@0: 		ListIterator<Node> itr = (diagramName == null) ? currentNodes.listIterator() : nodes.get(diagramName).listIterator();
f@0: 		while(itr.hasNext()){
f@0: 			Node n = itr.next();
f@0: 			if(n.diagramId == nodeHashCode){
f@0: 				itr.remove();
f@0: 				collectionsChanged = true;
f@0: 				break;
f@0: 			}
f@0: 		}
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void moveNode(double x, double y, int nodeHashCode,
f@0: 			String diagramName) {
f@0: 		ArrayList<Node> iterationList = (diagramName == null) ? currentNodes : nodes.get(diagramName); 
f@0: 		for(Node n : iterationList){
f@0: 			if(n.diagramId == nodeHashCode){
f@0: 				n.x = x;
f@0: 				n.y = y;
f@0: 				collectionsChanged = true;
f@0: 				break;
f@0: 			}
f@0: 		}
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void addEdge(int edgeHashCode, double[] xs, double[] ys,
f@0: 			BitSet[] adjMatrix, int nodeStart, int stipplePattern,
f@0: 			Line2D attractLine, String diagramName) {
f@0: 		/* find the mid point of the line of attraction */
f@0: 		double pX = Math.min(attractLine.getX1(), attractLine.getX2());
f@0: 		double pY = Math.min(attractLine.getY1(), attractLine.getY2());
f@0: 		pX += Math.abs(attractLine.getX1() -  attractLine.getX2())/2;
f@0: 		pY += Math.abs(attractLine.getY1() -  attractLine.getY2())/2;
f@0: 		
f@0: 		Edge e = new Edge(edgeHashCode,edgeHashCode, xs, ys, adjMatrix, nodeStart, stipplePattern, pX, pY);
f@0: 		/* add the edge reference to the edges list */
f@0: 		if(diagramName == null){
f@0: 			currentEdges.add(e);
f@0: 		}else{
f@0: 			edges.get(diagramName).add(e);
f@0: 		}
f@0: 		collectionsChanged = true;
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void updateEdge(int edgeHashCode, double[] xs, double[] ys,
f@0: 			BitSet[] adjMatrix, int nodeStart, Line2D attractLine,
f@0: 			String diagramName) {
f@0: 		
f@0: 		for(Edge e : currentEdges){
f@0: 			if(e.diagramId == edgeHashCode){
f@0: 				e.xs = xs;
f@0: 				e.ys = ys;
f@0: 				e.size = xs.length;
f@0: 				e.adjMatrix = adjMatrix;
f@0: 				e.nodeStart = nodeStart;
f@0: 				// find the mid point of the line of attraction
f@0: 				double pX = Math.min(attractLine.getX1(), attractLine.getX2());
f@0: 				double pY = Math.min(attractLine.getY1(), attractLine.getY2());
f@0: 				pX += Math.abs(attractLine.getX1() -  attractLine.getX2())/2;
f@0: 				pY += Math.abs(attractLine.getY1() -  attractLine.getY2())/2;
f@0: 				e.attractPointX = pX;
f@0: 				e.attractPointY = pY;
f@0: 			}
f@0: 		}
f@0: 		collectionsChanged = true;
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void removeEdge(int edgeHashCode, String diagramName) {
f@0: 		ListIterator<Edge> itr = (diagramName == null) ? currentEdges.listIterator() : edges.get(diagramName).listIterator();
f@0: 		while(itr.hasNext()){
f@0: 			Edge e = itr.next();
f@0: 			if(e.diagramId == edgeHashCode){
f@0: 				itr.remove();
f@0: 				collectionsChanged = true;
f@0: 				break;
f@0: 			}
f@0: 		}
f@0: 		collectionsChanged = true;
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void attractTo(int elementHashCode) {
f@0: 		attractTo = elementHashCode;
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void pickUp(int elementHashCode) {
f@0: 		pickUp = true;
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public void setVisible(boolean visible) {
f@0: 		// falcon haptics window cannot be made invisible 
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public synchronized void dispose(){
f@0: 		shutdown = true;
f@0: 		/* wait for the haptic thread to shut down */
f@0: 		try {
f@0: 			wait();
f@0: 		} catch (InterruptedException e) {
f@0: 			throw new RuntimeException(e);
f@0: 		}
f@0: 	}
f@0: 	
f@0: 	@Override
f@0: 	public void run() {
f@0: 		/* get the screen size which will be passed to init methos in order to set up a window
f@0: 		 * for the haptic with the same size as the swing one
f@0: 		 */
f@0: 		Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
f@0: 
f@0: 		int screenWidth = (int)screenSize.getWidth();
f@0: 		int screenHeight = (int)screenSize.getHeight();
f@0: 		currentNodes.size();
f@0: 		try {
f@0: 			initFalcon(screenWidth * 5 / 8,screenHeight * 5 / 8);
f@0: 		} catch (IOException e) {
f@0: 			throw new RuntimeException();// OMNI haptic device doesn't cause any exception
f@0: 		}
f@0: 	}
f@0: 	
f@0: 	/* the diagram currently selected */
f@0: 	private ArrayList<Node> currentNodes;
f@0: 	private ArrayList<Edge> currentEdges;
f@0: 
f@0: 	/* maps with all the diagrams in the editor */
f@0: 	private HashMap<String,ArrayList<Node>> nodes;
f@0: 	private HashMap<String,ArrayList<Edge>> edges;
f@0: 	
f@0: 	private HapticListenerThread hapticListener;
f@0: 	private boolean initFailed;
f@0: 	private boolean collectionsChanged;
f@0: 	private boolean pickUp;
f@0: 	private int attractTo;
f@0: 	private boolean shutdown;
f@0: }