Metamaps.JIT = {
vizData: [], // contains the visualization-compatible graph
/**
* This method will bind the event handlers it is interested and initialize the class.
*/
init: function () {
var self = Metamaps.JIT;
$(".zoomIn").click(self.zoomIn);
$(".zoomOut").click(self.zoomOut);
$(".centerMap").click(self.centerMap);
$(".zoomExtents").click(self.zoomExtents);
},
/**
* convert our topic JSON into something JIT can use
*/
prepareVizData: function () {
var self = Metamaps.JIT;
var topic;
var mapping;
var node;
var nodes = {};
var existingEdge;
var edge;
var edges = [];
// reset/empty vizData
self.vizData = [];
Metamaps.Visualize.loadLater = false;
Metamaps.Topics.each(function (t) {
node = t.createNode();
nodes[node.id] = node;
});
Metamaps.Synapses.each(function (s) {
edge = s.createEdge();
existingEdge = _.findWhere(edges, {
nodeFrom: edge.nodeFrom,
nodeTo: edge.nodeTo
}) ||
_.findWhere(edges, {
nodeFrom: edge.nodeTo,
nodeTo: edge.nodeFrom
});
if (existingEdge) {
// for when you're dealing with multiple relationships between the same two topics
if (Metamaps.Active.Map) {
mapping = s.getMapping();
existingEdge['$mappingIDs'].push(mapping.isNew() ? mapping.cid : mapping.id);
}
existingEdge['$synapseIDs'].push(s.id);
} else {
// for when you're dealing with a topic that has relationships to many different nodes
nodes[edge.nodeFrom].adjacencies.push(edge);
}
});
_.each(nodes, function (node) {
self.vizData.push(node);
});
if (self.vizData.length == 0) {
Metamaps.Visualize.loadLater = true;
}
Metamaps.Visualize.render();
}, // prepareVizData
edgeRender: function (adj, canvas) {
//get nodes cartesian coordinates
var pos = adj.nodeFrom.pos.getc(true);
var posChild = adj.nodeTo.pos.getc(true);
var synapse = adj.getData("synapses")[0]; // for now, just grab the first synapse
var directionCat = synapse.get("category");
//label placement on edges
Metamaps.JIT.renderEdgeArrows($jit.Graph.Plot.edgeHelper, adj, synapse);
//check for edge label in data
var desc = synapse.get("desc");
var showDesc = adj.getData("showDesc");
if (desc != "" && showDesc) {
// '&' to '&'
desc = Metamaps.Util.decodeEntities(desc);
//now adjust the label placement
var ctx = canvas.getCtx();
ctx.font = 'bold 14px arial';
ctx.fillStyle = '#FFF';
ctx.textBaseline = 'hanging';
var arrayOfLabelLines = Metamaps.Util.splitLine(desc, 30).split('\n');
var index, lineWidths = [];
for (index = 0; index < arrayOfLabelLines.length; ++index) {
lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width)
}
var width = Math.max.apply(null, lineWidths) + 8;
var height = (16 * arrayOfLabelLines.length) + 8;
var x = (pos.x + posChild.x - width) / 2;
var y = ((pos.y + posChild.y) / 2) - height / 2;
var radius = 5;
//render background
ctx.beginPath();
ctx.moveTo(x + radius, y);
ctx.lineTo(x + width - radius, y);
ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
ctx.lineTo(x + width, y + height - radius);
ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
ctx.lineTo(x + radius, y + height);
ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
ctx.lineTo(x, y + radius);
ctx.quadraticCurveTo(x, y, x + radius, y);
ctx.closePath();
ctx.fill();
//render text
ctx.fillStyle = '#222222';
ctx.textAlign = 'center';
for (index = 0; index < arrayOfLabelLines.length; ++index) {
ctx.fillText(arrayOfLabelLines[index], x + (width / 2), y + 5 + (16 * index));
}
}
}, // edgeRender
edgeRenderEmbed: function (adj, canvas) {
//get nodes cartesian coordinates
var pos = adj.nodeFrom.pos.getc(true);
var posChild = adj.nodeTo.pos.getc(true);
var directionCat = adj.getData("category");
//label placement on edges
Metamaps.JIT.renderEdgeArrows(this.edgeHelper, adj);
//check for edge label in data
var desc = adj.getData("desc");
var showDesc = adj.getData("showDesc");
if (desc != "" && showDesc) {
// '&' to '&'
desc = Metamaps.Util.decodeEntities(desc);
//now adjust the label placement
var ctx = canvas.getCtx();
ctx.font = 'bold 14px arial';
ctx.fillStyle = '#FFF';
ctx.textBaseline = 'hanging';
var arrayOfLabelLines = Metamaps.Util.splitLine(desc, 30).split('\n');
var index, lineWidths = [];
for (index = 0; index < arrayOfLabelLines.length; ++index) {
lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width)
}
var width = Math.max.apply(null, lineWidths) + 8;
var height = (16 * arrayOfLabelLines.length) + 8;
var x = (pos.x + posChild.x - width) / 2;
var y = ((pos.y + posChild.y) / 2) - height / 2;
var radius = 5;
//render background
ctx.beginPath();
ctx.moveTo(x + radius, y);
ctx.lineTo(x + width - radius, y);
ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
ctx.lineTo(x + width, y + height - radius);
ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
ctx.lineTo(x + radius, y + height);
ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
ctx.lineTo(x, y + radius);
ctx.quadraticCurveTo(x, y, x + radius, y);
ctx.closePath();
ctx.fill();
//render text
ctx.fillStyle = '#222222';
ctx.textAlign = 'center';
for (index = 0; index < arrayOfLabelLines.length; ++index) {
ctx.fillText(arrayOfLabelLines[index], x + (width / 2), y + 5 + (16 * index));
}
}
}, // edgeRenderEmbed
ForceDirected: {
animateSavedLayout: {
modes: ['linear'],
transition: $jit.Trans.Quad.easeInOut,
duration: 800,
onComplete: function () {
Metamaps.Visualize.mGraph.busy = false;
}
},
animateFDLayout: {
modes: ['linear'],
transition: $jit.Trans.Elastic.easeOut,
duration: 800,
onComplete: function () {
Metamaps.Visualize.mGraph.busy = false;
}
},
graphSettings: {
//id of the visualization container
injectInto: 'infovis',
//Enable zooming and panning
//by scrolling and DnD
Navigation: {
enable: true,
//Enable panning events only if we're dragging the empty
//canvas (and not a node).
panning: 'avoid nodes',
zooming: 28 //zoom speed. higher is more sensible
},
//background: {
// type: 'Metamaps'
//},
//NodeStyles: {
// enable: true,
// type: 'Native',
// stylesHover: {
// dim: 30
// },
// duration: 300
//},
// Change node and edge styles such as
// color and width.
// These properties are also set per node
// with dollar prefixed data-properties in the
// JSON structure.
Node: {
overridable: true,
color: '#2D6A5D',
type: 'customNode',
dim: 25
},
Edge: {
overridable: true,
color: Metamaps.Settings.colors.synapses.normal,
type: 'customEdge',
lineWidth: 2,
alpha: 0.4
},
//Native canvas text styling
Label: {
type: 'Native', //Native or HTML
size: 20,
family: 'arial',
textBaseline: 'hanging',
color: Metamaps.Settings.colors.labels.text
},
//Add Tips
Tips: {
enable: false,
onShow: function (tip, node) {}
},
// Add node events
Events: {
enable: true,
enableForEdges: true,
onMouseMove: function (node, eventInfo, e) {
Metamaps.JIT.onMouseMoveHandler(node, eventInfo, e);
},
//Update node positions when dragged
onDragMove: function (node, eventInfo, e) {
Metamaps.JIT.onDragMoveTopicHandler(node, eventInfo, e);
},
onDragEnd: function (node, eventInfo, e) {
Metamaps.JIT.onDragEndTopicHandler(node, eventInfo, e, false);
},
onDragCancel: function (node, eventInfo, e) {
Metamaps.JIT.onDragCancelHandler(node, eventInfo, e, false);
},
//Implement the same handler for touchscreens
onTouchStart: function (node, eventInfo, e) {
//$jit.util.event.stop(e); //stop default touchmove event
//Metamaps.Visualize.mGraph.events.onMouseDown(e, null, eventInfo);
Metamaps.Visualize.mGraph.events.touched = true;
Metamaps.Touch.touchPos = eventInfo.getPos();
var canvas = Metamaps.Visualize.mGraph.canvas,
ox = canvas.translateOffsetX;
oy = canvas.translateOffsetY,
sx = canvas.scaleOffsetX,
sy = canvas.scaleOffsetY;
Metamaps.Touch.touchPos.x *= sx;
Metamaps.Touch.touchPos.y *= sy;
Metamaps.Touch.touchPos.x += ox;
Metamaps.Touch.touchPos.y += oy;
touchDragNode = node;
},
//Implement the same handler for touchscreens
onTouchMove: function (node, eventInfo, e) {
if (Metamaps.Touch.touchDragNode) Metamaps.JIT.onDragMoveTopicHandler(Metamaps.Touch.touchDragNode, eventInfo, e);
else {
Metamaps.JIT.touchPanZoomHandler(eventInfo, e);
}
},
//Implement the same handler for touchscreens
onTouchEnd: function (node, eventInfo, e) {
},
//Implement the same handler for touchscreens
onTouchCancel: function (node, eventInfo, e) {
},
//Add also a click handler to nodes
onClick: function (node, eventInfo, e) {
// remove the rightclickmenu
$('.rightclickmenu').remove();
if (Metamaps.Mouse.boxStartCoordinates) {
Metamaps.Visualize.mGraph.busy = false;
Metamaps.Mouse.boxEndCoordinates = eventInfo.getPos();
Metamaps.JIT.selectWithBox(e);
return;
}
if (e.target.id != "infovis-canvas") return false;
//clicking on a edge, node, or clicking on blank part of canvas?
if (node.nodeFrom) {
Metamaps.JIT.selectEdgeOnClickHandler(node, e);
} else if (node && !node.nodeFrom) {
Metamaps.JIT.selectNodeOnClickHandler(node, e);
} else {
Metamaps.JIT.canvasClickHandler(eventInfo.getPos(), e);
} //if
},
//Add also a click handler to nodes
onRightClick: function (node, eventInfo, e) {
// remove the rightclickmenu
$('.rightclickmenu').remove();
if (Metamaps.Mouse.boxStartCoordinates) {
Metamaps.Visualize.mGraph.busy = false;
Metamaps.Mouse.boxEndCoordinates = eventInfo.getPos();
Metamaps.JIT.selectWithBox(e);
return;
}
if (e.target.id != "infovis-canvas") return false;
//clicking on a edge, node, or clicking on blank part of canvas?
if (node.nodeFrom) {
Metamaps.JIT.selectEdgeOnRightClickHandler(node, e);
} else if (node && !node.nodeFrom) {
Metamaps.JIT.selectNodeOnRightClickHandler(node, e);
} else {
console.log('right clicked on open space');
} //if
}
},
//Number of iterations for the FD algorithm
iterations: 200,
//Edge length
levelDistance: 200,
},
nodeSettings: {
'customNode': {
'render': function (node, canvas) {
var pos = node.pos.getc(true),
dim = node.getData('dim'),
topic = node.getData('topic'),
metacode = topic ? topic.getMetacode() : false,
ctx = canvas.getCtx();
// if the topic is selected draw a circle around it
if (node.selected) {
ctx.beginPath();
ctx.arc(pos.x, pos.y, dim + 3, 0, 2 * Math.PI, false);
ctx.strokeStyle = Metamaps.Settings.colors.topics.selected;
ctx.lineWidth = 2;
ctx.stroke();
}
if (!metacode ||
!metacode.get('image') ||
!metacode.get('image').complete ||
(typeof metacode.get('image').naturalWidth !== "undefined" &&
metacode.get('image').naturalWidth === 0)) {
ctx.beginPath();
ctx.arc(pos.x, pos.y, dim, 0, 2 * Math.PI, false);
ctx.fillStyle = '#B6B2FD';
ctx.fill();
} else {
ctx.drawImage(metacode.get('image'), pos.x - dim, pos.y - dim, dim * 2, dim * 2);
}
},
'contains': function (node, pos) {
var npos = node.pos.getc(true),
dim = node.getData('dim'),
arrayOfLabelLines = Metamaps.Util.splitLine(node.name, 30).split('\n'),
ctx = Metamaps.Visualize.mGraph.canvas.getCtx();
var height = 25 * arrayOfLabelLines.length;
var index, lineWidths = [];
for (index = 0; index < arrayOfLabelLines.length; ++index) {
lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width)
}
var width = Math.max.apply(null, lineWidths) + 8;
var labely = npos.y + node.getData("height") + 5 + height / 2;
var overLabel = this.nodeHelper.rectangle.contains({
x: npos.x,
y: labely
}, pos, width, height);
return this.nodeHelper.circle.contains(npos, pos, dim) || overLabel;
}
}
},
edgeSettings: {
'customEdge': {
'render': function (adj, canvas) {
Metamaps.JIT.edgeRender(adj, canvas)
},
'contains': function (adj, pos) {
var from = adj.nodeFrom.pos.getc(),
to = adj.nodeTo.pos.getc();
// this fixes an issue where when edges are perfectly horizontal or perfectly vertical
// it becomes incredibly difficult to hover over them
if (-1 < pos.x && pos.x < 1) pos.x = 0;
if (-1 < pos.y && pos.y < 1) pos.y = 0;
return $jit.Graph.Plot.edgeHelper.line.contains(from, to, pos, adj.Edge.epsilon);
}
}
}
}, // ForceDirected
ForceDirected3D: {
animate: {
modes: ['linear'],
transition: $jit.Trans.Elastic.easeOut,
duration: 2500,
onComplete: function () {
Metamaps.Visualize.mGraph.busy = false;
}
},
graphSettings: {
//id of the visualization container
injectInto: 'infovis',
type: '3D',
Scene: {
Lighting: {
enable: false,
ambient: [0.5, 0.5, 0.5],
directional: {
direction: {
x: 1,
y: 0,
z: -1
},
color: [0.9, 0.9, 0.9]
}
}
},
//Enable zooming and panning
//by scrolling and DnD
Navigation: {
enable: false,
//Enable panning events only if we're dragging the empty
//canvas (and not a node).
panning: 'avoid nodes',
zooming: 10 //zoom speed. higher is more sensible
},
// Change node and edge styles such as
// color and width.
// These properties are also set per node
// with dollar prefixed data-properties in the
// JSON structure.
Node: {
overridable: true,
type: 'sphere',
dim: 15,
color: '#ffffff'
},
Edge: {
overridable: false,
type: 'tube',
color: '#111',
lineWidth: 3
},
//Native canvas text styling
Label: {
type: 'HTML', //Native or HTML
size: 10,
style: 'bold'
},
// Add node events
Events: {
enable: true,
type: 'Native',
i: 0,
onMouseMove: function (node, eventInfo, e) {
//if(this.i++ % 3) return;
var pos = eventInfo.getPos();
Metamaps.Visualize.cameraPosition.x += (pos.x - Metamaps.Visualize.cameraPosition.x) * 0.5;
Metamaps.Visualize.cameraPosition.y += (-pos.y - Metamaps.Visualize.cameraPosition.y) * 0.5;
Metamaps.Visualize.mGraph.plot();
},
onMouseWheel: function (delta) {
Metamaps.Visualize.cameraPosition.z += -delta * 20;
Metamaps.Visualize.mGraph.plot();
},
onClick: function () {}
},
//Number of iterations for the FD algorithm
iterations: 200,
//Edge length
levelDistance: 100
},
nodeSettings: {
},
edgeSettings: {
}
}, // ForceDirected3D
RGraph: {
animate: {
modes: ['polar'],
duration: 800,
onComplete: function () {
Metamaps.Visualize.mGraph.busy = false;
}
},
// this will just be used to patch the ForceDirected graphsettings with the few things which actually differ
background: {
//type: 'Metamaps',
levelDistance: 200,
numberOfCircles: 4,
CanvasStyles: {
strokeStyle: '#333',
lineWidth: 1.5
}
},
levelDistance: 200
},
onMouseEnter: function (edge) {
if (edge.getData('alpha') === 0) return; // don't do anything if the edge is filtered
$('canvas').css('cursor', 'pointer');
var edgeIsSelected = Metamaps.Selected.Edges.indexOf(edge);
//following if statement only executes if the edge being hovered over is not selected
if (edgeIsSelected == -1) {
edge.setData('showDesc', true, 'current');
edge.setDataset('end', {
lineWidth: 4,
alpha: 1
});
Metamaps.Visualize.mGraph.fx.animate({
modes: ['edge-property:lineWidth:color:alpha'],
duration: 100
});
Metamaps.Visualize.mGraph.plot();
}
}, // onMouseEnter
onMouseLeave: function (edge) {
if (edge.getData('alpha') === 0) return; // don't do anything if the edge is filtered
$('canvas').css('cursor', 'default');
var edgeIsSelected = Metamaps.Selected.Edges.indexOf(edge);
//following if statement only executes if the edge being hovered over is not selected
if (edgeIsSelected == -1) {
edge.setData('showDesc', false, 'current');
edge.setDataset('end', {
lineWidth: 2,
alpha: 0.4
});
Metamaps.Visualize.mGraph.fx.animate({
modes: ['edge-property:lineWidth:color:alpha'],
duration: 100
});
}
Metamaps.Visualize.mGraph.plot();
}, // onMouseLeave
onMouseMoveHandler: function (node, eventInfo, e) {
var self = Metamaps.JIT;
if (Metamaps.Visualize.mGraph.busy) return;
var node = eventInfo.getNode();
var edge = eventInfo.getEdge();
//if we're on top of a node object, act like there aren't edges under it
if (node != false) {
if (Metamaps.Mouse.edgeHoveringOver) {
self.onMouseLeave(Metamaps.Mouse.edgeHoveringOver);
}
$('canvas').css('cursor', 'pointer');
return;
}
if (edge == false && Metamaps.Mouse.edgeHoveringOver != false) {
//mouse not on an edge, but we were on an edge previously
self.onMouseLeave(Metamaps.Mouse.edgeHoveringOver);
} else if (edge != false && Metamaps.Mouse.edgeHoveringOver == false) {
//mouse is on an edge, but there isn't a stored edge
self.onMouseEnter(edge);
} else if (edge != false && Metamaps.Mouse.edgeHoveringOver != edge) {
//mouse is on an edge, but a different edge is stored
self.onMouseLeave(Metamaps.Mouse.edgeHoveringOver)
self.onMouseEnter(edge);
}
//could be false
Metamaps.Mouse.edgeHoveringOver = edge;
if (!node && !edge) {
$('canvas').css('cursor', 'default');
}
}, // onMouseMoveHandler
enterKeyHandler: function () {
// this is to submit new topic creation
if (Metamaps.Create.newTopic.beingCreated) {
Metamaps.Topic.createTopicLocally();
} else if (Metamaps.Create.newSynapse.beingCreated) {
Metamaps.Synapse.createSynapseLocally();
}
}, //enterKeyHandler
escKeyHandler: function () {
Metamaps.Control.deselectAllEdges();
Metamaps.Control.deselectAllNodes();
}, //escKeyHandler
touchPanZoomHandler: function (eventInfo, e) {
if (e.touches.length == 1) {
var thispos = Metamaps.Touch.touchPos,
currentPos = eventInfo.getPos(),
canvas = Metamaps.Visualize.mGraph.canvas,
ox = canvas.translateOffsetX,
oy = canvas.translateOffsetY,
sx = canvas.scaleOffsetX,
sy = canvas.scaleOffsetY;
currentPos.x *= sx;
currentPos.y *= sy;
currentPos.x += ox;
currentPos.y += oy;
//var x = currentPos.x - thispos.x,
// y = currentPos.y - thispos.y;
var x = currentPos.x - thispos.x,
y = currentPos.y - thispos.y;
Metamaps.Touch.touchPos = currentPos;
Metamaps.Visualize.mGraph.canvas.translate(x * 1 / sx, y * 1 / sy);
} else if (e.touches.length == 2) {
var touch1 = e.touches[0];
var touch2 = e.touches[1];
var dist = Metamaps.Util.getDistance({
x: touch1.clientX,
y: touch1.clientY
}, {
x: touch2.clientX,
y: touch2.clientY
});
if (!lastDist) {
lastDist = dist;
}
var scale = dist / lastDist;
console.log(scale);
if (8 >= Metamaps.Visualize.mGraph.canvas.scaleOffsetX * scale && Metamaps.Visualize.mGraph.canvas.scaleOffsetX * scale >= 1) {
Metamaps.Visualize.mGraph.canvas.scale(scale, scale);
}
if (Metamaps.Visualize.mGraph.canvas.scaleOffsetX < 0.5) {
Metamaps.Visualize.mGraph.canvas.viz.labels.hideLabels(true);
} else if (Metamaps.Visualize.mGraph.canvas.scaleOffsetX > 0.5) {
Metamaps.Visualize.mGraph.canvas.viz.labels.hideLabels(false);
}
lastDist = dist;
}
}, // touchPanZoomHandler
onDragMoveTopicHandler: function (node, eventInfo, e) {
var self = Metamaps.JIT;
if (node && !node.nodeFrom) {
Metamaps.Create.newTopic.hide();
Metamaps.Create.newSynapse.hide();
var pos = eventInfo.getPos();
// if it's a left click, or a touch, move the node
if (e.touches || (e.button == 0 && !e.altKey && (e.buttons == 0 || e.buttons == 1 || e.buttons == undefined))) {
//if the node dragged isn't already selected, select it
var whatToDo = self.handleSelectionBeforeDragging(node, e);
if (node.pos.rho || node.pos.rho === 0) {
var rho = Math.sqrt(pos.x * pos.x + pos.y * pos.y);
var theta = Math.atan2(pos.y, pos.x);
node.pos.setp(theta, rho);
} else if (whatToDo == 'only-drag-this-one') {
node.pos.setc(pos.x, pos.y);
node.setData('xloc', pos.x);
node.setData('yloc', pos.y);
} else {
var len = Metamaps.Selected.Nodes.length;
//first define offset for each node
var xOffset = new Array();
var yOffset = new Array();
for (var i = 0; i < len; i += 1) {
var n = Metamaps.Selected.Nodes[i];
xOffset[i] = n.pos.x - node.pos.x;
yOffset[i] = n.pos.y - node.pos.y;
} //for
for (var i = 0; i < len; i += 1) {
var n = Metamaps.Selected.Nodes[i];
var x = pos.x + xOffset[i];
var y = pos.y + yOffset[i];
n.pos.setc(x, y);
n.setData('xloc', x);
n.setData('yloc', y);
} //for
} //if
if (whatToDo == 'deselect') {
Metamaps.Control.deselectNode(node);
}
Metamaps.Visualize.mGraph.plot();
}
// if it's a right click or holding down alt, start synapse creation ->third option is for firefox
else if ((e.button == 2 || (e.button == 0 && e.altKey) || e.buttons == 2) && Metamaps.Active.Mapper) {
if (tempInit == false) {
tempNode = node;
tempInit = true;
// set the draw synapse start positions
var l = Metamaps.Selected.Nodes.length;
if (l > 0) {
for (var i = l - 1; i >= 0; i -= 1) {
var n = Metamaps.Selected.Nodes[i];
Metamaps.Mouse.synapseStartCoordinates.push({
x: n.pos.getc().x,
y: n.pos.getc().y
});
}
} else {
Metamaps.Mouse.synapseStartCoordinates = [{
x: tempNode.pos.getc().x,
y: tempNode.pos.getc().y
}];
}
Metamaps.Mouse.synapseEndCoordinates = {
x: pos.x,
y: pos.y
};
}
//
temp = eventInfo.getNode();
if (temp != false && temp.id != node.id && Metamaps.Selected.Nodes.indexOf(temp) == -1) { // this means a Node has been returned
tempNode2 = temp;
Metamaps.Visualize.mGraph.plot();
Metamaps.Mouse.synapseEndCoordinates = {
x: tempNode2.pos.getc().x,
y: tempNode2.pos.getc().y
};
// before making the highlighted one bigger, make sure all the others are regular size
Metamaps.Visualize.mGraph.graph.eachNode(function (n) {
n.setData('dim', 25, 'current');
});
temp.setData('dim', 35, 'current');
Metamaps.Visualize.mGraph.fx.plotNode(tempNode, Metamaps.Visualize.mGraph.canvas);
Metamaps.Visualize.mGraph.fx.plotNode(temp, Metamaps.Visualize.mGraph.canvas);
} else if (!temp) {
tempNode2 = null;
Metamaps.Visualize.mGraph.graph.eachNode(function (n) {
n.setData('dim', 25, 'current');
});
//pop up node creation :)
var myX = e.clientX - 110;
var myY = e.clientY - 30;
$('#new_topic').css('left', myX + "px");
$('#new_topic').css('top', myY + "px");
$('#new_synapse').css('left', myX + "px");
$('#new_synapse').css('top', myY + "px");
Metamaps.Create.newTopic.x = eventInfo.getPos().x;
Metamaps.Create.newTopic.y = eventInfo.getPos().y;
Metamaps.Visualize.mGraph.plot();
Metamaps.Mouse.synapseEndCoordinates = {
x: pos.x,
y: pos.y
};
}
}
}
}, // onDragMoveTopicHandler
onDragCancelHandler: function (node, eventInfo, e) {
tempNode = null;
tempNode2 = null;
tempInit = false;
// reset the draw synapse positions to false
Metamaps.Mouse.synapseStartCoordinates = [];
Metamaps.Mouse.synapseEndCoordinates = null;
Metamaps.Visualize.mGraph.plot();
}, // onDragCancelHandler
onDragEndTopicHandler: function (node, eventInfo, e) {
var mapping;
if (tempInit && tempNode2 == null) {
// this means you want to add a new topic, and then a synapse
Metamaps.Create.newTopic.addSynapse = true;
Metamaps.Create.newTopic.open();
} else if (tempInit && tempNode2 != null) {
// this means you want to create a synapse between two existing topics
Metamaps.Create.newTopic.addSynapse = false;
Metamaps.Create.newSynapse.topic1id = tempNode.id;
Metamaps.Create.newSynapse.topic2id = tempNode2.id;
Metamaps.Create.newSynapse.open();
tempNode = null;
tempNode2 = null;
tempInit = false;
} else if (!tempInit && node && !node.nodeFrom) {
// this means you dragged an existing node, autosave that to the database
if (Metamaps.Active.Map) {
mapping = node.getData('mapping');
mapping.set({
xloc: node.getPos().x,
yloc: node.getPos().y
});
mapping.save();
}
}
}, //onDragEndTopicHandler
canvasClickHandler: function (canvasLoc, e) {
//grab the location and timestamp of the click
var storedTime = Metamaps.Mouse.lastCanvasClick;
var now = Date.now(); //not compatible with IE8 FYI
Metamaps.Mouse.lastCanvasClick = now;
if (now - storedTime < Metamaps.Mouse.DOUBLE_CLICK_TOLERANCE && !Metamaps.Mouse.didPan) {
// DOUBLE CLICK
//pop up node creation :)
Metamaps.Create.newTopic.addSynapse = false;
Metamaps.Create.newTopic.x = canvasLoc.x;
Metamaps.Create.newTopic.y = canvasLoc.y;
$('#new_topic').css('left', e.clientX + "px");
$('#new_topic').css('top', e.clientY + "px");
Metamaps.Create.newTopic.open();
} else if (!Metamaps.Mouse.didPan) {
// SINGLE CLICK, no pan
Metamaps.TopicCard.hideCard();
Metamaps.SynapseCard.hideCard();
Metamaps.Create.newTopic.hide();
Metamaps.Create.newSynapse.hide();
$('.rightclickmenu').remove();
// reset the draw synapse positions to false
Metamaps.Mouse.synapseStartCoordinates = [];
Metamaps.Mouse.synapseEndCoordinates = null;
tempInit = false;
tempNode = null;
tempNode2 = null;
Metamaps.Control.deselectAllEdges();
Metamaps.Control.deselectAllNodes();
}
}, //canvasClickHandler
nodeDoubleClickHandler: function (node, e) {
Metamaps.TopicCard.showCard(node);
}, // nodeDoubleClickHandler
edgeDoubleClickHandler: function (adj, e) {
Metamaps.SynapseCard.showCard(adj, e);
}, // nodeDoubleClickHandler
nodeWasDoubleClicked: function () {
//grab the timestamp of the click
var storedTime = Metamaps.Mouse.lastNodeClick;
var now = Date.now(); //not compatible with IE8 FYI
Metamaps.Mouse.lastNodeClick = now;
if (now - storedTime < Metamaps.Mouse.DOUBLE_CLICK_TOLERANCE) {
return true;
} else {
return false;
}
}, //nodeWasDoubleClicked;
handleSelectionBeforeDragging: function (node, e) {
// four cases:
// 1 nothing is selected, so pretend you aren't selecting
// 2 others are selected only and shift, so additionally select this one
// 3 others are selected only, no shift: drag only this one
// 4 this node and others were selected, so drag them (just return false)
//return value: deselect node again after?
if (Metamaps.Selected.Nodes.length == 0) {
return 'only-drag-this-one';
}
if (Metamaps.Selected.Nodes.indexOf(node) == -1) {
if (e.shiftKey) {
Metamaps.Control.selectNode(node,e);
return 'nothing';
} else {
return 'only-drag-this-one';
}
}
return 'nothing'; //case 4?
}, // handleSelectionBeforeDragging
selectWithBox: function (e) {
var sX = Metamaps.Mouse.boxStartCoordinates.x,
sY = Metamaps.Mouse.boxStartCoordinates.y,
eX = Metamaps.Mouse.boxEndCoordinates.x,
eY = Metamaps.Mouse.boxEndCoordinates.y;
if(!(e.shiftKey) && !(e.ctrlKey)){
Metamaps.Control.deselectAllNodes();
Metamaps.Control.deselectAllEdges();
}
//select all nodes, and their edges, that are within the box
Metamaps.Visualize.mGraph.graph.eachNode(function (n) {
var x = n.pos.x,
y = n.pos.y;
if ((sX < x && x < eX && sY < y && y < eY) || (sX > x && x > eX && sY > y && y > eY) || (sX > x && x > eX && sY < y && y < eY) || (sX < x && x < eX && sY > y && y > eY)) {
if(e.ctrlKey){
if(n.selected){
Metamaps.Control.deselectNode(n);
}
else{
Metamaps.Control.selectNode(n,e);
}
}
else{
Metamaps.Control.selectNode(n,e);
}
}
});
//Convert selection box coordinates to traditional coordinates (+,+) in upper right
sY = -1 * sY;
eY = -1 * eY
Metamaps.Synapses.each(function(synapse) {
var fromNodeX = synapse.get('edge').nodeFrom.pos.x;
var fromNodeY = -1 * synapse.get('edge').nodeFrom.pos.y;
var toNodeX = synapse.get('edge').nodeTo.pos.x;
var toNodeY = -1 * synapse.get('edge').nodeTo.pos.y;
var maxX = fromNodeX;
var maxY = fromNodeY;
var minX = fromNodeX;
var minY = fromNodeY;
//Correct maxX, MaxY values
(toNodeX > maxX) ? (maxX = toNodeX):(minX = toNodeX);
(toNodeY > maxY) ? (maxY = toNodeY):(minY = toNodeY);
var maxBoxX = sX;
var maxBoxY = sY;
var minBoxX = sX;
var minBoxY = sY;
//Correct maxBoxX, maxBoxY values
(eX > maxBoxX) ? (maxBoxX = eX):(minBoxX = eX);
(eY > maxBoxY) ? (maxBoxY = eY):(minBoxY = eY);
//Fins the slopes from the synapse fromNode to the 4 corners of the selection box
var slopes = [];
slopes.push( (sY - fromNodeY) / (sX - fromNodeX) );
slopes.push( (sY - fromNodeY) / (eX - fromNodeX) );
slopes.push( (eY - fromNodeY) / (eX - fromNodeX) );
slopes.push( (eY - fromNodeY) / (sX - fromNodeX) );
var minSlope = slopes[0];
var maxSlope = slopes[0];
slopes.forEach(function(entry){
if(entry > maxSlope) maxSlope = entry;
if(entry < minSlope) minSlope = entry;
});
//Find synapse-in-question's slope
var synSlope = (toNodeY - fromNodeY) / (toNodeX - fromNodeX);
var b = fromNodeY - synSlope * fromNodeX;
var selectTest = false;
//if the synapse slope is within a range that would intersect with the selection box
if (synSlope <= maxSlope && synSlope >= minSlope){
var testX = sX;
var testY = synSlope * testX + b;
if(testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testY >= minBoxY && testY <= maxBoxY){
selectTest = true;
}
testX = eX;
testY = synSlope * testX + b;
if(testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testY >= minBoxY && testY <= maxBoxY){
selectTest = true;
}
testY = sY;
testX = (testY - b)/synSlope;
if(testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testX >= minBoxX && testY <= maxBoxX){
selectTest = true;
}
testY = eY;
testX = (testY - b)/synSlope;
if(testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testX >= minBoxX && testY <= maxBoxX){
selectTest = true;
}
}
//The test synapse was selected!
if(selectTest){
if(e.ctrlKey){
if(Metamaps.Selected.Edges.indexOf(synapse.get('edge')) != -1 ){
Metamaps.Control.deselectEdge(synapse.get('edge'));
}
else{
Metamaps.Control.selectEdge(synapse.get('edge'));
}
}
else{
Metamaps.Control.selectEdge(synapse.get('edge'));
}
}
});
Metamaps.Mouse.boxStartCoordinates = false;
Metamaps.Mouse.boxEndCoordinates = false;
Metamaps.Visualize.mGraph.plot();
}, // selectWithBox
drawSelectBox: function (eventInfo, e) {
var ctx = Metamaps.Visualize.mGraph.canvas.getCtx();
var startX = Metamaps.Mouse.boxStartCoordinates.x,
startY = Metamaps.Mouse.boxStartCoordinates.y,
currX = eventInfo.getPos().x,
currY = eventInfo.getPos().y;
Metamaps.Visualize.mGraph.canvas.clear();
Metamaps.Visualize.mGraph.plot();
ctx.beginPath();
ctx.moveTo(startX, startY);
ctx.lineTo(startX, currY);
ctx.lineTo(currX, currY);
ctx.lineTo(currX, startY);
ctx.lineTo(startX, startY);
ctx.strokeStyle = "black";
ctx.stroke();
}, // drawSelectBox
selectNodeOnClickHandler: function (node, e) {
if (Metamaps.Visualize.mGraph.busy) return;
var self = Metamaps.JIT;
// catch right click on mac, which is often like ctrl+click
if (navigator.platform.indexOf("Mac") != -1 && e.ctrlKey) {
self.selectNodeOnRightClickHandler(node, e)
return;
}
// if on a topic page, let alt+click center you on a new topic
if (Metamaps.Active.Topic && e.altKey) {
Metamaps.RGraph.centerOn(node.id);
return;
}
var check = self.nodeWasDoubleClicked();
if (check) {
self.nodeDoubleClickHandler(node, e);
return;
} else {
// wait a certain length of time, then check again, then run this code
setTimeout(function () {
if (!Metamaps.JIT.nodeWasDoubleClicked()) {
if (!e.shiftKey) {
Metamaps.Control.deselectAllNodes();
Metamaps.Control.deselectAllEdges();
}
if (node.selected) {
Metamaps.Control.deselectNode(node);
} else {
Metamaps.Control.selectNode(node,e);
}
//trigger animation to final styles
Metamaps.Visualize.mGraph.fx.animate({
modes: ['edge-property:lineWidth:color:alpha'],
duration: 500
});
Metamaps.Visualize.mGraph.plot();
}
}, Metamaps.Mouse.DOUBLE_CLICK_TOLERANCE);
}
}, //selectNodeOnClickHandler
selectNodeOnRightClickHandler: function (node, e) {
// the 'node' variable is a JIT node, the one that was clicked on
// the 'e' variable is the click event
e.preventDefault();
e.stopPropagation();
if (Metamaps.Visualize.mGraph.busy) return;
// delete old right click menu
$('.rightclickmenu').remove();
// create new menu for clicked on node
var rightclickmenu = document.createElement("div");
rightclickmenu.className = "rightclickmenu";
// add the proper options to the menu
var menustring = '';
if (Metamaps.Active.Mapper) menustring += '- Delete
';
if (Metamaps.Active.Map && Metamaps.Active.Mapper) menustring += '- Remove from map
';
menustring += '- Hide until refresh
';
if (!Metamaps.Active.Map) menustring += '- Center this topic
';
menustring += '- Open in new tab
';
if (Metamaps.Active.Mapper) {
var options = '- commons
\
- public
\
- private
\
';
menustring += '- Change permissions' + options + '
';
}
menustring += '
';
rightclickmenu.innerHTML = menustring;
// position the menu where the click happened
$(rightclickmenu).css({
left: e.clientX,
top: e.clientY
});
//add the menu to the page
$('#center-container').append(rightclickmenu);
// attach events to clicks on the list items
// delete the selected things from the database
$('.rc-delete').click(function () {
$('.rightclickmenu').remove();
var n = Metamaps.Selected.Nodes.length;
var e = Metamaps.Selected.Edges.length;
var ntext = n == 1 ? "1 topic" : n + " topics";
var etext = e == 1 ? "1 synapse" : e + " synapses";
var text = "You have " + ntext + " and " + etext + " selected. ";
var r = confirm(text + "Are you sure you want to permanently delete them all? This will remove them from all maps they appear on.");
if (r == true) {
Metamaps.Control.deleteSelectedEdges();
Metamaps.Control.deleteSelectedNodes();
}
});
// remove the selected things from the map
$('.rc-remove').click(function () {
$('.rightclickmenu').remove();
Metamaps.Control.removeSelectedEdges();
Metamaps.Control.removeSelectedNodes();
});
// hide selected nodes and synapses until refresh
$('.rc-hide').click(function () {
$('.rightclickmenu').remove();
Metamaps.Control.hideSelectedEdges();
Metamaps.Control.hideSelectedNodes();
});
// when in radial, center on the topic you picked
$('.rc-center').click(function () {
$('.rightclickmenu').remove();
centerOn(node.id);
});
// open the entity in a new tab
$('.rc-popout').click(function () {
$('.rightclickmenu').remove();
var win = window.open('/topics/' + node.id, '_blank');
win.focus();
});
// change the permission of all the selected nodes and synapses that you were the originator of
$('.rc-permission li').click(function () {
$('.rightclickmenu').remove();
// $(this).text() will be 'commons' 'public' or 'private'
Metamaps.Control.updateSelectedPermissions($(this).text());
});
}, //selectNodeOnRightClickHandler
selectEdgeOnClickHandler: function (adj, e) {
if (Metamaps.Visualize.mGraph.busy) return;
var self = Metamaps.JIT;
// catch right click on mac, which is often like ctrl+click
if (navigator.platform.indexOf("Mac") != -1 && e.ctrlKey) {
self.selectEdgeOnRightClickHandler(adj, e)
return;
}
var check = self.nodeWasDoubleClicked();
if (check) {
self.edgeDoubleClickHandler(adj, e);
return;
} else {
// wait a certain length of time, then check again, then run this code
setTimeout(function () {
if (!Metamaps.JIT.nodeWasDoubleClicked()) {
if (!e.shiftKey) {
Metamaps.Control.deselectAllNodes();
Metamaps.Control.deselectAllEdges();
}
if (Metamaps.Selected.Edges.indexOf(adj) !== -1) {
Metamaps.Control.deselectEdge(adj);
} else {
Metamaps.Control.selectEdge(adj);
}
Metamaps.Visualize.mGraph.plot();
}
}, Metamaps.Mouse.DOUBLE_CLICK_TOLERANCE);
}
}, //selectEdgeOnClickHandler
selectEdgeOnRightClickHandler: function (adj, e) {
// the 'node' variable is a JIT node, the one that was clicked on
// the 'e' variable is the click event
if (adj.getData('alpha') === 0) return; // don't do anything if the edge is filtered
var authorized;
e.preventDefault();
e.stopPropagation();
if (Metamaps.Visualize.mGraph.busy) return;
Metamaps.Control.selectEdge(adj);
// delete old right click menu
$('.rightclickmenu').remove();
// create new menu for clicked on node
var rightclickmenu = document.createElement("div");
rightclickmenu.className = "rightclickmenu";
// add the proper options to the menu
var menustring = '';
if (Metamaps.Active.Mapper) menustring += '- Delete
';
if (Metamaps.Active.Map && Metamaps.Active.Map.authorizeToEdit(Metamaps.Active.Mapper)) {
menustring += '- Remove from map
';
}
menustring += '- Hide until refresh
';
if (Metamaps.Active.Mapper) {
var options = '- commons
\
- public
\
- private
\
';
menustring += '- Change permissions' + options + '
';
}
menustring += '
';
rightclickmenu.innerHTML = menustring;
// position the menu where the click happened
$(rightclickmenu).css({
left: e.clientX,
top: e.clientY
});
//add the menu to the page
$('#center-container').append(rightclickmenu);
// attach events to clicks on the list items
// delete the selected things from the database
$('.rc-delete').click(function () {
$('.rightclickmenu').remove();
var n = Metamaps.Selected.Nodes.length;
var e = Metamaps.Selected.Edges.length;
var ntext = n == 1 ? "1 topic" : n + " topics";
var etext = e == 1 ? "1 synapse" : e + " synapses";
var text = "You have " + ntext + " and " + etext + " selected. ";
var r = confirm(text + "Are you sure you want to permanently delete them all? This will remove them from all maps they appear on.");
if (r == true) {
Metamaps.Control.deleteSelectedEdges();
Metamaps.Control.deleteSelectedNodes();
}
});
// remove the selected things from the map
$('.rc-remove').click(function () {
$('.rightclickmenu').remove();
Metamaps.Control.removeSelectedEdges();
Metamaps.Control.removeSelectedNodes();
});
// hide selected nodes and synapses until refresh
$('.rc-hide').click(function () {
$('.rightclickmenu').remove();
Metamaps.Control.hideSelectedEdges();
Metamaps.Control.hideSelectedNodes();
});
// change the permission of all the selected nodes and synapses that you were the originator of
$('.rc-permission li').click(function () {
$('.rightclickmenu').remove();
// $(this).text() will be 'commons' 'public' or 'private'
Metamaps.Control.updateSelectedPermissions($(this).text());
});
}, //selectEdgeOnRightClickHandler
SmoothPanning: function () {
var sx = Metamaps.Visualize.mGraph.canvas.scaleOffsetX,
sy = Metamaps.Visualize.mGraph.canvas.scaleOffsetY,
y_velocity = Metamaps.Mouse.changeInY, // initial y velocity
x_velocity = Metamaps.Mouse.changeInX, // initial x velocity
easing = 1; // frictional value
easing = 1;
window.clearInterval(panningInt)
panningInt = setInterval(function () {
myTimer()
}, 1);
function myTimer() {
Metamaps.Visualize.mGraph.canvas.translate(x_velocity * easing * 1 / sx, y_velocity * easing * 1 / sy);
easing = easing * 0.75;
if (easing < 0.1) window.clearInterval(panningInt);
}
}, // SmoothPanning
renderMidArrow: function (from, to, dim, swap, canvas, placement, newSynapse) {
var ctx = canvas.getCtx();
// invert edge direction
if (swap) {
var tmp = from;
from = to;
to = tmp;
}
// vect represents a line from tip to tail of the arrow
var vect = new $jit.Complex(to.x - from.x, to.y - from.y);
// scale it
vect.$scale(dim / vect.norm());
// compute the midpoint of the edge line
var newX = (to.x - from.x) * placement + from.x;
var newY = (to.y - from.y) * placement + from.y;
var midPoint = new $jit.Complex(newX, newY);
// move midpoint by half the "length" of the arrow so the arrow is centered on the midpoint
var arrowPoint = new $jit.Complex((vect.x / 0.7) + midPoint.x, (vect.y / 0.7) + midPoint.y);
// compute the tail intersection point with the edge line
var intermediatePoint = new $jit.Complex(arrowPoint.x - vect.x, arrowPoint.y - vect.y);
// vector perpendicular to vect
var normal = new $jit.Complex(-vect.y / 2, vect.x / 2);
var v1 = intermediatePoint.add(normal);
var v2 = intermediatePoint.$add(normal.$scale(-1));
if (newSynapse) {
ctx.strokeStyle = "#222222";
ctx.lineWidth = 2;
ctx.globalAlpha = 0.4;
}
ctx.beginPath();
ctx.moveTo(from.x, from.y);
ctx.lineTo(to.x, to.y);
ctx.stroke();
ctx.beginPath();
ctx.moveTo(v1.x, v1.y);
ctx.lineTo(arrowPoint.x, arrowPoint.y);
ctx.lineTo(v2.x, v2.y);
ctx.stroke();
}, // renderMidArrow
renderEdgeArrows: function (edgeHelper, adj, synapse) {
var self = Metamaps.JIT;
var canvas = Metamaps.Visualize.mGraph.canvas;
var directionCat = synapse.get('category');
var direction = synapse.getDirection();
var pos = adj.nodeFrom.pos.getc(true);
var posChild = adj.nodeTo.pos.getc(true);
//plot arrow edge
if (directionCat == "none") {
edgeHelper.line.render({
x: pos.x,
y: pos.y
}, {
x: posChild.x,
y: posChild.y
}, canvas);
} else if (directionCat == "both") {
self.renderMidArrow({
x: pos.x,
y: pos.y
}, {
x: posChild.x,
y: posChild.y
}, 13, true, canvas, 0.7);
self.renderMidArrow({
x: pos.x,
y: pos.y
}, {
x: posChild.x,
y: posChild.y
}, 13, false, canvas, 0.7);
} else if (directionCat == "from-to") {
var direction = adj.data.$direction;
var inv = (direction && direction.length > 1 && direction[0] != adj.nodeFrom.id);
self.renderMidArrow({
x: pos.x,
y: pos.y
}, {
x: posChild.x,
y: posChild.y
}, 13, inv, canvas, 0.7);
self.renderMidArrow({
x: pos.x,
y: pos.y
}, {
x: posChild.x,
y: posChild.y
}, 13, inv, canvas, 0.3);
}
}, //renderEdgeArrows
zoomIn: function () {
Metamaps.Visualize.mGraph.canvas.scale(1.25,1.25);
},
zoomOut: function () {
Metamaps.Visualize.mGraph.canvas.scale(0.8,0.8);
},
centerMap: function () {
var canvas = Metamaps.Visualize.mGraph.canvas;
var offsetScale = canvas.scaleOffsetX;
canvas.scale(1/offsetScale,1/offsetScale);
var offsetX = canvas.translateOffsetX;
var offsetY = canvas.translateOffsetY;
canvas.translate(-1*offsetX,-1*offsetY);
},
zoomExtents: function () {
Metamaps.JIT.centerMap();
var height = $(document).height(),
width = $(document).width(),
maxX, minX, maxY, minY, counter = 0;
if (Metamaps.Selected.Nodes.length > 0) {
var nodes = Metamaps.Selected.Nodes;
if(nodes.length > 1){
nodes.forEach(function (n) {
var x = n.pos.x,
y = n.pos.y;
if (counter == 0){
maxX = x;
minX = x;
maxY = y;
minY = y;
}
maxX = Math.max(x,maxX);
maxY = Math.max(y,maxY);
minX = Math.min(x,minX);
minY = Math.min(y,minY);
counter++;
});
var spanX = maxX - minX;
var spanY = maxY - minY;
var ratioX = spanX / width;
var ratioY = spanY / height;
var newRatio = Math.max(ratioX,ratioY);
var canvas = Metamaps.Visualize.mGraph.canvas;
canvas.scale(1/newRatio*0.8,1/newRatio*0.8);
counter = 0;
nodes.forEach(function (n) {
var x = n.pos.x,
y = n.pos.y;
if (counter == 0){
maxX = x;
minX = x;
maxY = y;
minY = y;
}
maxX = Math.max(x,maxX);
maxY = Math.max(y,maxY);
minX = Math.min(x,minX);
minY = Math.min(y,minY);
counter++;
});
}
}
else{
var nodes = Metamaps.Visualize.mGraph.graph;
if(Object.keys(nodes).length >1){
nodes.eachNode(function (n) {
var x = n.pos.x,
y = n.pos.y;
if (counter == 0){
maxX = x;
minX = x;
maxY = y;
minY = y;
}
maxX = Math.max(x,maxX);
maxY = Math.max(y,maxY);
minX = Math.min(x,minX);
minY = Math.min(y,minY);
counter++;
});
var spanX = maxX - minX;
var spanY = maxY - minY;
var ratioX = spanX / width;
var ratioY = spanY / height;
var newRatio = Math.max(ratioX,ratioY);
var canvas = Metamaps.Visualize.mGraph.canvas;
canvas.scale(1/newRatio*0.8,1/newRatio*0.8);
counter = 0;
nodes.eachNode(function (n) {
var x = n.pos.x,
y = n.pos.y;
if (counter == 0){
maxX = x;
minX = x;
maxY = y;
minY = y;
}
maxX = Math.max(x,maxX);
maxY = Math.max(y,maxY);
minX = Math.min(x,minX);
minY = Math.min(y,minY);
counter++;
});
}
}
var cogX = (maxX + minX)/2;
var cogY = (maxY + minY)/2;
canvas.translate(-1* cogX, -1* cogY);
}
};