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Morcego 3D Network Browser - v0.6.0 http://morcego.arca.ime.usp.br ----------------------------------- Morcego is a java applet for visualizing and browsing graphs (networks) in 3D. You can use it to make 3D mind maps. It can be embedded in web applications and it's goal is to become a visualization framework. The job of integrating Morcego to your website is becoming easier each version If this documentation is not enough, don't be afraid to send a message to developers mailing list at morcego-dev@arca.ime.usp.br. We hope you have as much fun using Morcego as we do by coding it :-). Morcego is licensed under GNU LESSER GENERAL PUBLIC LICENSE (LGPL). This documentation is divided in three parts: first one is about using applet, second on how to embbed Morcego in other applications and finally how to upgrade to v0.6.0. This document is divided in the following sections: 1 - Using the applet 2 - Embedding applet in application 2.1 - Making a server 2.1.1 - Making a static mindmap 2.1.2 - Integrating to your PHP application 2.1.3 - Developing your own XMLRPC server 2.1.4 - Creating a new transport layer 2.2 - Properties for nodes and links 2.3 - Javascript integration 2.4 - Applet configuration 3 - Upgrading 3.1 - From v0.5 to v0.6 3.2 - From v0.4 to v0.5 3.3 - From v0.3 to v0.4 1 - USING THE APPLET Once Morcego applet window opens, you'll see (after loading, that may take some moments) an animation of little balls connected to each other in a network getting arranged in space - a cool effect by the way ;-). The possible actions: * ROTATE - Drag mouse on empty space and you'll be able to see the graph from different angles. If you drag fast and relase, like throwing, the graph will keep spinning. * GET INFO - Put the mouse cursor over a node, and it will become a hand. If there's more info about that node, a description box will appear. * NAVIGATE - Click on a node and it will go to center. When you do that, the new neighbourhood will appear in a few moments (wait a bit for the info to come from server). Clicking on center node will open the node URL in browser window. * MOVE NODE - Click on a node and drag to move it. The graph will balance itself as you move. This is useful to see how a node influences the whole network. 2 - EMBEDDING APPLET IN APPLICATION For integrating Morcego applet in your web application, you need an special Morcego server to feed the applet with graph data. This is usually done with XMLRPC, the only transport way available until now (check section 2.4 on how to implement other ways). Implementing this used to be a tough task, but since v0.6 Morcego comes with a demo application and a set of PHP classes for integration with other softwares. You have several options, depending on your technical skills and time available. You can: * Make a static mindmap website by editing some XML data files and templates * Implement your own server in PHP to make a dynamic map, by extending a PHP class * Develop a XMLRPC server that implements Morcego's protocol in any language you wish * Make a new transport layer in java, by extending a java class and creating a server to feed it. 2.1 - MAKING A SERVER 2.1.1 - MAKING A STATIC MINDMAP If you don't have much technical skills, but would like to make an online mind map, you can do one by editing some XMl files and putting a simple application in a webserver with PHP: * Copy demo/ to a directory in your web server, let's say /var/www/morcego_demo for example. * Copy morcego-$VERSION.jar and php/Morcego to /var/www/morcego_demo * Give permission to your web user to write to /var/www/morcego_demo/templates_c * Open a browser and check the results * Take a look at the XML files under templates/data directory. Edit them to customize the mindmap. * Check also the .tpl files at templates/ dir. Modify those to customize the layout. For help on that, check http://smarty.php.net 2.1.2 - INTEGRATING TO YOUR PHP APPLICATION Morcego also comes with a set of PHP classes to make your own server. You'll need two files: your server (let's call it server.php), a php file available through HTTP, and a subclass of Morcego_Graph (let's call it MyGraph) * server.php Very simple, check demo/server.php on how to do that. All you need to do is create a Morcego_Graph object (note that Morcego_Graph is an abstract class and must be subclassed) and use it to instantiate a Morcego_Server object. * MyGraph This is the core of your server. You must implement the method getNode($nodeId), that takes the nodeId and returns a data structure containing all relevant data about node with id $nodeId and the links it has to/from other nodes. The data structure has the exact same format of the getSubGraph() method (explained below at 2.3), but you usually want to return only one node in "nodes" section. I say usually, because it might be useful to return a bigger set of nodes and links, for example in raw XMl server used by the demo: you might want to defined many nodes in one XML files to make your job easier (note that in the demo you can't start your navigation in some of the nodes that doesn't have it's own XMl file). 2.1.3 - DEVELOPING YOUR OWN XMLRPC SERVER The XMLRPC server should implement two methods: * integer getVersion() This method returns the XMLRPC protocol version. Current version is 2, so if you're implementing the server according to instructions below, this method should return "2". In case this method is not present, version 1 is assumed, and so data structure for older versions of Morcego (0.4 and below) will be expected. * struct getSubGraph(string nodeId, int depth) This method returns a part of the graph containing the node with id nodeId and all nodes with distance lesser or equal than depth. The returned struct must be as follow, {} indicates structs and [] arrays, fields marked with * are optional (see section below for complete list of properties) { nodes => { nodeId => { * type => "Round", * color => "#FF0000", * actionUrl => "http://...", * description => "node description, shown in box", }, node1Id => {}, node2Id => {...} } links => [ { from => "nodeId", to => "node2Id", * type => "Solid" }, { from => "nodeId", to => "node1Id", * type => "Dashed" } ] } 2.1.4 - CREATING A NEW TRANSPORT LAYER You can do so by creating a new java class in package br.arca.morcego.transport package that implements Transport. Your class must have the word "Transport" at end, because it will be appended to the parameter "transport" to obtain the class name. You have to implement two methods (check interface): * setup: will be called once * retrieveData: will be called once on start and everytime user navigates. The format of hash returned is the same described above in getSubGraph() from xmlrpc server. 2.2 - PROPERTIES FOR NODES AND LINKS Each NODE can have the following properties: * type: "Round", "Square", "Triangle", "Text" or "Image". Round nodes are represented by balls with a title above (that can be empty). Square and Triangle have similar behavior, but with other forms Text nodes have just the title. Image nodes are represented by image defined by "image" property, an url. * title: Name of the node, that will appear above R