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// Source: http://raphaeljs.com/graffle.html (extended with labels and arrow heads)
Raphael.fn.connection = function (obj1, obj2, line, bg, strokeColor, symbol, labelFontSize, name1, name2) {
if (obj1.line && obj1.from && obj1.to) {
line = obj1;
obj1 = line.from;
obj2 = line.to;
};
var bb1 = obj1.getBBox(),
bb2 = obj2.getBBox(),
p = [{x: bb1.x + bb1.width / 2, y: bb1.y - 1},
{x: bb1.x + bb1.width / 2, y: bb1.y + bb1.height + 1},
{x: bb1.x - 1, y: bb1.y + bb1.height / 2},
{x: bb1.x + bb1.width + 1, y: bb1.y + bb1.height / 2},
{x: bb2.x + bb2.width / 2, y: bb2.y - 1},
{x: bb2.x + bb2.width / 2, y: bb2.y + bb2.height + 1},
{x: bb2.x - 1, y: bb2.y + bb2.height / 2},
{x: bb2.x + bb2.width + 1, y: bb2.y + bb2.height / 2}],
d = {}, dis = [];
for (var i = 0; i < 4; i++) {
for (var j = 4; j < 8; j++) {
var dx = Math.abs(p[i].x - p[j].x),
dy = Math.abs(p[i].y - p[j].y);
if ((i == j - 4) || (((i != 3 && j != 6) || p[i].x < p[j].x) && ((i != 2 && j != 7) || p[i].x > p[j].x) && ((i != 0 && j != 5) || p[i].y > p[j].y) && ((i != 1 && j != 4) || p[i].y < p[j].y))) {
dis.push(dx + dy);
d[dis[dis.length - 1]] = [i, j];
};
};
};
if (dis.length == 0) {
var res = [0, 4];
} else {
res = d[Math.min.apply(Math, dis)];
};
var x1 = p[res[0]].x,
y1 = p[res[0]].y,
x4 = p[res[1]].x,
y4 = p[res[1]].y;
dx = Math.max(Math.abs(x1 - x4) / 2, 10);
dy = Math.max(Math.abs(y1 - y4) / 2, 10);
var x2 = [x1, x1, x1 - dx, x1 + dx][res[0]].toFixed(3),
y2 = [y1 - dy, y1 + dy, y1, y1][res[0]].toFixed(3),
x3 = [0, 0, 0, 0, x4, x4, x4 - dx, x4 + dx][res[1]].toFixed(3),
y3 = [0, 0, 0, 0, y1 + dy, y1 - dy, y4, y4][res[1]].toFixed(3);
var path = ["M", x1.toFixed(3), y1.toFixed(3),
"C", x2, y2, x3, y3, x4.toFixed(3), y4.toFixed(3)].join(",");
var theLine = this.path(path).attr({stroke: color, fill: "none"});
var labelPoint = theLine.getPointAtLength(theLine.getTotalLength()/2);
var ahPoint = theLine.getPointAtLength(theLine.getTotalLength());
if (line && line.line) {
line.bg && line.bg.attr({path: path});
line.line.attr({path: path});
line.lbl.remove();
line.lbl = this.text(labelPoint.x+10, labelPoint.y+10, line.symbol
).attr({fill:'#000', 'font-size': line.labelFontSize});
line.ah.remove();
line.ah = this.circle(ahPoint.x, ahPoint.y, line.labelFontSize/4
).attr({stroke: 'none', fill: line.strokeColor});
} else {
var color = typeof line == "string" ? line : strokeColor;
var strokeWidth = bg.split("|")[1] || 3;
var stroke = bg.split("|")[0];
var ret = {
bg: bg && bg.split && this.path(path
).attr({stroke: stroke,
fill: "none", "stroke-width": strokeWidth}),
line: theLine,
from: obj1,
to: obj2,
symbol: symbol,
labelFontSize: labelFontSize,
strokeColor: strokeColor,
ah: this.circle(ahPoint.x, ahPoint.y, labelFontSize/4
).attr({stroke: 'none', fill: strokeColor}),
lbl: this.text(labelPoint.x+10, labelPoint.y+10, symbol
).attr({fill:'#000', 'font-size': labelFontSize}),
name1: name1,
name2: name2
};
return ret;
};
};
// Source: http://stackoverflow.com/questions/2627436/svg-animation-along-path-with-raphael
Raphael.fn.circlePath = function(x , y, r) {
return "M"+x+","+(y-r)+"A"+r+","+r+",0,1,1,"+(x-0.1)+","+(y-r)+" z";
};
// The nodes
Raphael.fn.aNode = function(x, y, r, isFinal, hasSelfConn,
strokeWidth, strokeColor,labelText, labelFontSize, name) {
var res = this.set();
// two circle element for dragging and binding connections
var connector = this.circle(x, y, r).attr({stroke:0}).attr({fill: 'none'});
res.push(connector);
var dragger = this.circle(x, y, r).attr({stroke:0}).attr({fill: 'none'});
res.push(dragger);
// outer circle
var co = this.path(this.circlePath(x, y, r)).attr({stroke:'none'});
res.push(co);
if (isFinal) {
// inner circle
var ci = this.path(this.circlePath(x, y, r/1.2)).attr({
stroke:'#fff', 'stroke-width':strokeWidth});
};
// self connection
if (hasSelfConn) {
var p1 = co.getPointAtLength(co.getTotalLength()-r/3);
var p2 = co.getPointAtLength(r/3);
var selfConn = this.path('M'+p1.x+','+p1.y+
' C'+(p1.x-r)+','+(p1.y-2.5*r)+' '+
(p2.x+r)+','+(p1.y-2.5*r)+' '+p2.x+','+p2.y);
res.push(selfConn.attr({'stroke-width': strokeWidth,
stroke: strokeColor}));
// another path for animation (connected to the center of co)
var selfConnAnimPath = this.path('M'+x+','+y+selfConn.attrs.path[1]+'z'
).attr({stroke:0})
res.push(selfConnAnimPath);
// arrow head
var ahSize = r/8;
var ahRef = selfConn.getPointAtLength(selfConn.getTotalLength()-1)
var ahAngle = Math.atan2(ahRef.x-p2.x,p2.x-ahRef.y);
ahAngle = (ahAngle / (2 * Math.PI)) * 360;
var ah = this.path("M" + ahRef.x + " " + ahRef.y +
" L" + (ahRef.x - ahSize) + " " + (ahRef.y - ahSize) +
" L" + (ahRef.x - ahSize) + " " + (ahRef.y + ahSize) +
" L" + ahRef.x + " " + ahRef.y
).attr({stroke:strokeColor, fill:strokeColor}
).rotate((112+ahAngle), ahRef.x, ahRef.y);
res.push(ah);
// label on self connection
var label = this.text(
selfConn.getPointAtLength(
selfConn.getTotalLength()/2).x,
selfConn.getPointAtLength(
selfConn.getTotalLength()/2).y-labelFontSize/1.25,
labelText
).attr({font: this.getFont("Helvetica"), 'font-size': labelFontSize});
res.push(label);
};
if (isFinal) {
res.push(ci);
};
return {
node: res,
name: name
};
};
// Source: http://www.davidcramer.net/code/63/dir-in-javascript.html
function dir(object) {
methods = [];
for (z in object) if (typeof(z) != 'number') methods.push(z);
return methods.join(', ');
};
// Drawing the graph.
function graph() {
var nodeRadius = 30;
var nodeRadiusHi = nodeRadius + 10;
var nodeOpacity = 1;
var nodeOpacityHi = .5;
var labelFontSize = 16;
var strokeWidth = 3;
var strokeColor = '#ccc';
r = Raphael("holder", 1024, 640);
// dragging, see: http://raphaeljs.com/touches.html
var start = function () {
this.animate({r: nodeRadiusHi, opacity: nodeOpacityHi}, 500, ">");
},
move = function (dx, dy) {
this.moveTo(dx, dy);
for (var i = nodeById[this.id].node.length - 1; i >= 0; i--){
nodeById[this.id].node[i].translate(dx, dy);
};
for (var i = connections.length; i--;) {
r.connection(connections[i]);
};
r.safari();
},
up = function () {
this.animate({r:nodeRadius, opacity:nodeOpacity}, 500, ">");
};
// nodes
var nodes = [];
var nodeById = [];
var graphNodeByName = [];
var i = 0, n, color, isFinal, selfConn = false, selfConnSymbol;
var nx = 30;
var nxOffset = 100;
var ny = 130;
var nyOffset = 130;
for (var state in ttable) {
color = Raphael.getColor();
if (ttable[state].isFinal) {
isFinal = true;
} else {
isFinal = false;
};
for (symbol in ttable[state]) {
if (symbol == 'isFinal') { continue; };
if (ttable[state][symbol] == state) {
selfConn = true;
selfConnSymbol = symbol;
break;
} else {
selfConn = false;
};
};
if (i % 2 == 0) {
ny = nyOffset;
} else {
ny = ny + nyOffset;
};
n = r.aNode(nx, ny, nodeRadius, isFinal, selfConn,
strokeWidth, strokeColor, symbol, labelFontSize, state);
n.node[1].attr({fill:color, opacity:nodeOpacity, cursor:'move'});
n.node[1].drag(move, start, up);
nodes.push(n);
nodeById[n.node[1].id] = nodes[i];
graphNodeByName[state] = n;
nx = nx + nxOffset;
i++;
};
// connections
var connections = [];
var k = l = 0;
for (var state in ttable) {
for (var i = 0; i < ALPHABET.length; i++) {
l = 0;
if(ttable[state][ALPHABET[i]]) {
for (var statex in ttable) {
if (ttable[state][ALPHABET[i]] == statex) {
if (state == statex) {
continue;
} else {
connections.push(r.connection(nodes[k].node[0], nodes[l].node[0],
strokeColor, strokeColor, strokeColor, ALPHABET[i], labelFontSize,
nodes[k].name, nodes[l].name));
};
};
l++;
};
};
};
k++;
};
return {
paper: r,
nodes: nodes,
nodeById: nodeById,
connections: connections,
graphNodeByName: graphNodeByName
};
};
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