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Copy pathcytoscape-edge-bend-editing.js
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cytoscape-edge-bend-editing.js
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(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.cytoscapeEdgeBendEditing = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
var debounce = _dereq_('./debounce');
var bendPointUtilities = _dereq_('./bendPointUtilities');
var registerUndoRedoFunctions = _dereq_('./registerUndoRedoFunctions');
module.exports = function (params, cy) {
var fn = params;
var addBendPointCxtMenuId = 'cy-edge-bend-editing-cxt-add-bend-point';
var removeBendPointCxtMenuId = 'cy-edge-bend-editing-cxt-remove-bend-point';
var ePosition, eStyle, eRemove, eAdd, eZoom, eSelect, eUnselect, eTapStart, eTapDrag, eTapEnd, eCxtTap;
// last status of gestures
var lastPanningEnabled, lastZoomingEnabled, lastBoxSelectionEnabled;
// status of edge to highlight bends and selected edges
var edgeToHighlightBends, numberOfSelectedEdges;
var functions = {
init: function () {
// register undo redo functions
registerUndoRedoFunctions(cy, bendPointUtilities, params);
var self = this;
var opts = params;
var $container = $(this);
var $canvas = $('<canvas></canvas>');
$container.append($canvas);
var cxtAddBendPointFcn = function (event) {
var edge = event.target || event.cyTarget;
if(!bendPointUtilities.isIgnoredEdge(edge)) {
var param = {
edge: edge,
weights: edge.data('cyedgebendeditingWeights') ? [].concat(edge.data('cyedgebendeditingWeights')) : edge.data('cyedgebendeditingWeights'),
distances: edge.data('cyedgebendeditingDistances') ? [].concat(edge.data('cyedgebendeditingDistances')) : edge.data('cyedgebendeditingDistances')
};
bendPointUtilities.addBendPoint();
if (options().undoable) {
cy.undoRedo().do('changeBendPoints', param);
}
}
refreshDraws();
};
var cxtRemoveBendPointFcn = function (event) {
var edge = event.target || event.cyTarget;
var param = {
edge: edge,
weights: [].concat(edge.data('cyedgebendeditingWeights')),
distances: [].concat(edge.data('cyedgebendeditingDistances'))
};
bendPointUtilities.removeBendPoint();
if(options().undoable) {
cy.undoRedo().do('changeBendPoints', param);
}
refreshDraws();
};
var menuItems = [
{
id: addBendPointCxtMenuId,
title: opts.addBendMenuItemTitle,
content: 'Add Bend Point',
selector: 'edge',
onClickFunction: cxtAddBendPointFcn
},
{
id: removeBendPointCxtMenuId,
title: opts.removeBendMenuItemTitle,
content: 'Remove Bend Point',
selector: 'edge',
onClickFunction: cxtRemoveBendPointFcn
}
];
if(cy.contextMenus) {
var menus = cy.contextMenus('get');
// If context menus is active just append menu items else activate the extension
// with initial menu items
if (menus.isActive()) {
menus.appendMenuItems(menuItems);
}
else {
cy.contextMenus({
menuItems: menuItems
});
}
}
var _sizeCanvas = debounce(function () {
$canvas
.attr('height', $container.height())
.attr('width', $container.width())
.css({
'position': 'absolute',
'top': 0,
'left': 0,
'z-index': '999'
})
;
setTimeout(function () {
var canvasBb = $canvas.offset();
var containerBb = $container.offset();
$canvas
.css({
'top': -(canvasBb.top - containerBb.top),
'left': -(canvasBb.left - containerBb.left)
})
;
// redraw on canvas resize
if(cy){
refreshDraws();
}
}, 0);
}, 250);
function sizeCanvas() {
_sizeCanvas();
}
sizeCanvas();
$(window).bind('resize', function () {
sizeCanvas();
});
var ctx = $canvas[0].getContext('2d');
// write options to data
var data = $container.data('cyedgebendediting');
if (data == null) {
data = {};
}
data.options = opts;
var optCache;
function options() {
return optCache || (optCache = $container.data('cyedgebendediting').options);
}
// we will need to convert model positons to rendered positions
function convertToRenderedPosition(modelPosition) {
var pan = cy.pan();
var zoom = cy.zoom();
var x = modelPosition.x * zoom + pan.x;
var y = modelPosition.y * zoom + pan.y;
return {
x: x,
y: y
};
}
function refreshDraws() {
var w = $container.width();
var h = $container.height();
ctx.clearRect(0, 0, w, h);
if( edgeToHighlightBends ) {
renderBendShapes(edgeToHighlightBends);
}
}
// render the bend shapes of the given edge
function renderBendShapes(edge) {
if(!edge.hasClass('edgebendediting-hasbendpoints')) {
return;
}
var segpts = bendPointUtilities.getSegmentPoints(edge);//edge._private.rdata.segpts;
var length = getBendShapesLenght(edge);
var srcPos = edge.source().position();
var tgtPos = edge.target().position();
var weights = edge.data('cyedgebendeditingWeights');
var distances = edge.data('cyedgebendeditingDistances');
for(var i = 0; segpts && i < segpts.length; i = i + 2){
var bendX = segpts[i];
var bendY = segpts[i + 1];
var oldStyle = ctx.fillStyle;
ctx.fillStyle = edge.css('line-color');
renderBendShape(bendX, bendY, length);
ctx.fillStyle = oldStyle;
}
}
// render a bend shape with the given parameters
function renderBendShape(bendX, bendY, length) {
// convert to rendered parameters
var renderedTopLeftPos = convertToRenderedPosition({x: bendX, y: bendY});
length *= cy.zoom();
// render bend shape
ctx.beginPath();
ctx.arc(renderedTopLeftPos.x, renderedTopLeftPos.y, length / 2, 0, 2 * Math.PI);
ctx.fill();
ctx.closePath();
}
// get the length of bend points to be rendered
function getBendShapesLenght(edge) {
var factor = options().bendShapeSizeFactor;
if (parseFloat(edge.css('width')) <= 2.5)
return 2.5 * factor;
else return parseFloat(edge.css('width'))*factor;
}
// check if the point represented by {x, y} is inside the bend shape
function checkIfInsideBendShape(x, y, length, centerX, centerY){
var minX = centerX - length / 2;
var maxX = centerX + length / 2;
var minY = centerY - length / 2;
var maxY = centerY + length / 2;
var inside = (x >= minX && x <= maxX) && (y >= minY && y <= maxY);
return inside;
}
// get the index of bend point containing the point represented by {x, y}
function getContainingBendShapeIndex(x, y, edge) {
if(edge.data('cyedgebendeditingWeights') == null || edge.data('cyedgebendeditingWeights').length == 0){
return -1;
}
var segpts = bendPointUtilities.getSegmentPoints(edge);//edge._private.rdata.segpts;
var length = getBendShapesLenght(edge);
for(var i = 0; segpts && i < segpts.length; i = i + 2){
var bendX = segpts[i];
var bendY = segpts[i + 1];
var inside = checkIfInsideBendShape(x, y, length, bendX, bendY);
if(inside){
return i / 2;
}
}
return -1;
};
// store the current status of gestures and set them to false
function disableGestures() {
lastPanningEnabled = cy.panningEnabled();
lastZoomingEnabled = cy.zoomingEnabled();
lastBoxSelectionEnabled = cy.boxSelectionEnabled();
cy.zoomingEnabled(false)
.panningEnabled(false)
.boxSelectionEnabled(false);
}
// reset the gestures by their latest status
function resetGestures() {
cy.zoomingEnabled(lastZoomingEnabled)
.panningEnabled(lastPanningEnabled)
.boxSelectionEnabled(lastBoxSelectionEnabled);
}
function moveBendPoints(positionDiff, edges) {
edges.forEach(function( edge ){
var previousBendPointsPosition = bendPointUtilities.getSegmentPoints(edge);
var nextBendPointsPosition = [];
if (previousBendPointsPosition != undefined)
{
for (i=0; i<previousBendPointsPosition.length; i+=2)
{
nextBendPointsPosition.push({x: previousBendPointsPosition[i]+positionDiff.x, y: previousBendPointsPosition[i+1]+positionDiff.y});
}
edge.data('bendPointPositions',nextBendPointsPosition);
}
});
bendPointUtilities.initBendPoints(options().bendPositionsFunction, edges);
cy.trigger('bendPointMovement');
}
{
lastPanningEnabled = cy.panningEnabled();
lastZoomingEnabled = cy.zoomingEnabled();
lastBoxSelectionEnabled = cy.boxSelectionEnabled();
// Initilize the edgeToHighlightBends and numberOfSelectedEdges
{
var selectedEdges = cy.edges(':selected');
var numberOfSelectedEdges = selectedEdges.length;
if ( numberOfSelectedEdges === 1 ) {
edgeToHighlightBends = selectedEdges[0];
}
}
cy.bind('zoom pan', eZoom = function () {
if ( !edgeToHighlightBends ) {
return;
}
refreshDraws();
});
cy.on('data', 'edge', function () {
refreshDraws();
});
cy.on('position', 'node', ePosition = function () {
var node = this;
// If there is no edge to highlight bends or this node is not any end of that edge return directly
if ( !edgeToHighlightBends || !( edgeToHighlightBends.data('source') === node.id()
|| edgeToHighlightBends.data('target') === node.id() ) ) {
return;
}
refreshDraws();
});
cy.on('style', 'edge.edgebendediting-hasbendpoints:selected', eStyle = function () {
refreshDraws();
});
cy.on('remove', 'edge', eRemove = function () {
var edge = this;
if (edge.selected()) {
numberOfSelectedEdges = numberOfSelectedEdges - 1;
cy.startBatch();
if (edgeToHighlightBends) {
edgeToHighlightBends.removeClass('cy-edge-bend-editing-highlight-bends');
}
if (numberOfSelectedEdges === 1) {
var selectedEdges = cy.edges(':selected');
// If user removes all selected edges at a single operation then our 'numberOfSelectedEdges'
// may be misleading. Therefore we need to check if the number of edges to highlight is realy 1 here.
if (selectedEdges.length === 1) {
edgeToHighlightBends = selectedEdges[0];
edgeToHighlightBends.addClass('cy-edge-bend-editing-highlight-bends');
}
else {
edgeToHighlightBends = undefined;
}
}
else {
edgeToHighlightBends = undefined;
}
cy.endBatch();
}
refreshDraws();
});
cy.on('add', 'edge', eAdd = function () {
var edge = this;
if (edge.selected()) {
numberOfSelectedEdges = numberOfSelectedEdges + 1;
cy.startBatch();
if (edgeToHighlightBends) {
edgeToHighlightBends.removeClass('cy-edge-bend-editing-highlight-bends');
}
if (numberOfSelectedEdges === 1) {
edgeToHighlightBends = edge;
edgeToHighlightBends.addClass('cy-edge-bend-editing-highlight-bends');
}
else {
edgeToHighlightBends = undefined;
}
cy.endBatch();
}
refreshDraws();
});
cy.on('select', 'edge', eSelect = function () {
var edge = this;
numberOfSelectedEdges = numberOfSelectedEdges + 1;
cy.startBatch();
if (edgeToHighlightBends) {
edgeToHighlightBends.removeClass('cy-edge-bend-editing-highlight-bends');
}
if (numberOfSelectedEdges === 1) {
edgeToHighlightBends = edge;
edgeToHighlightBends.addClass('cy-edge-bend-editing-highlight-bends');
}
else {
edgeToHighlightBends = undefined;
}
cy.endBatch();
refreshDraws();
});
cy.on('unselect', 'edge', eUnselect = function () {
numberOfSelectedEdges = numberOfSelectedEdges - 1;
cy.startBatch();
if (edgeToHighlightBends) {
edgeToHighlightBends.removeClass('cy-edge-bend-editing-highlight-bends');
}
if (numberOfSelectedEdges === 1) {
var selectedEdges = cy.edges(':selected');
// If user unselects all edges by tapping to the core etc. then our 'numberOfSelectedEdges'
// may be misleading. Therefore we need to check if the number of edges to highlight is realy 1 here.
if (selectedEdges.length === 1) {
edgeToHighlightBends = selectedEdges[0];
edgeToHighlightBends.addClass('cy-edge-bend-editing-highlight-bends');
}
else {
edgeToHighlightBends = undefined;
}
}
else {
edgeToHighlightBends = undefined;
}
cy.endBatch();
refreshDraws();
});
var movedBendIndex;
var movedBendEdge;
var moveBendParam;
var createBendOnDrag;
cy.on('tapstart', 'edge', eTapStart = function (event) {
var edge = this;
if (!edgeToHighlightBends || edgeToHighlightBends.id() !== edge.id()) {
createBendOnDrag = false;
return;
}
movedBendEdge = edge;
moveBendParam = {
edge: edge,
weights: edge.data('cyedgebendeditingWeights') ? [].concat(edge.data('cyedgebendeditingWeights')) : [],
distances: edge.data('cyedgebendeditingDistances') ? [].concat(edge.data('cyedgebendeditingDistances')) : []
};
var cyPos = event.position || event.cyPosition;
var cyPosX = cyPos.x;
var cyPosY = cyPos.y;
var index = getContainingBendShapeIndex(cyPosX, cyPosY, edge);
if (index != -1) {
movedBendIndex = index;
// movedBendEdge = edge;
disableGestures();
}
else {
createBendOnDrag = true;
}
});
cy.on('tapdrag', eTapDrag = function (event) {
var edge = movedBendEdge;
if(movedBendEdge !== undefined && bendPointUtilities.isIgnoredEdge(edge) ) {
return;
}
if(createBendOnDrag) {
var cyPos = event.position || event.cyPosition;
bendPointUtilities.addBendPoint(edge, cyPos);
movedBendIndex = getContainingBendShapeIndex(cyPos.x, cyPos.y, edge);
movedBendEdge = edge;
createBendOnDrag = undefined;
disableGestures();
}
if (movedBendEdge === undefined || movedBendIndex === undefined) {
return;
}
var weights = edge.data('cyedgebendeditingWeights');
var distances = edge.data('cyedgebendeditingDistances');
var relativeBendPosition = bendPointUtilities.convertToRelativeBendPosition(edge, event.position || event.cyPosition);
weights[movedBendIndex] = relativeBendPosition.weight;
distances[movedBendIndex] = relativeBendPosition.distance;
edge.data('cyedgebendeditingWeights', weights);
edge.data('cyedgebendeditingDistances', distances);
refreshDraws();
});
cy.on('tapend', eTapEnd = function (event) {
var edge = movedBendEdge;
if( edge !== undefined ) {
if( movedBendIndex != undefined ) {
var startX = edge.source().position('x');
var startY = edge.source().position('y');
var endX = edge.target().position('x');
var endY = edge.target().position('y');
var segPts = bendPointUtilities.getSegmentPoints(edge);
var allPts = [startX, startY].concat(segPts).concat([endX, endY]);
var pointIndex = movedBendIndex + 1;
var preIndex = pointIndex - 1;
var posIndex = pointIndex + 1;
var point = {
x: allPts[2 * pointIndex],
y: allPts[2 * pointIndex + 1]
};
var prePoint = {
x: allPts[2 * preIndex],
y: allPts[2 * preIndex + 1]
};
var posPoint = {
x: allPts[2 * posIndex],
y: allPts[2 * posIndex + 1]
};
var nearToLine;
if( ( point.x === prePoint.x && point.y === prePoint.y ) || ( point.x === prePoint.x && point.y === prePoint.y ) ) {
nearToLine = true;
}
else {
var m1 = ( prePoint.y - posPoint.y ) / ( prePoint.x - posPoint.x );
var m2 = -1 / m1;
var srcTgtPointsAndTangents = {
srcPoint: prePoint,
tgtPoint: posPoint,
m1: m1,
m2: m2
};
//get the intersection of the current segment with the new bend point
var currentIntersection = bendPointUtilities.getIntersection(edge, point, srcTgtPointsAndTangents);
var dist = Math.sqrt( Math.pow( (point.x - currentIntersection.x), 2 )
+ Math.pow( (point.y - currentIntersection.y), 2 ));
// var length = Math.sqrt( Math.pow( (posPoint.x - prePoint.x), 2 )
// + Math.pow( (posPoint.y - prePoint.y), 2 ));
if( dist < 8 ) {
nearToLine = true;
}
}
if( nearToLine )
{
bendPointUtilities.removeBendPoint(edge, movedBendIndex);
}
}
}
if (edge !== undefined && moveBendParam !== undefined && edge.data('cyedgebendeditingWeights')
&& edge.data('cyedgebendeditingWeights').toString() != moveBendParam.weights.toString()) {
if(options().undoable) {
cy.undoRedo().do('changeBendPoints', moveBendParam);
}
}
movedBendIndex = undefined;
movedBendEdge = undefined;
moveBendParam = undefined;
createBendOnDrag = undefined;
resetGestures();
refreshDraws();
});
//Variables used for starting and ending the movement of bend points with arrows
var moveparam;
var firstBendPoint;
var edgeContainingFirstBendPoint;
var firstBendPointFound;
cy.on("edgebendediting.movestart", function (e, edges) {
firstBendPointFound = false;
if (edges[0] != undefined)
{
edges.forEach(function( edge ){
if (bendPointUtilities.getSegmentPoints(edge) != undefined && !firstBendPointFound)
{
firstBendPoint = { x: bendPointUtilities.getSegmentPoints(edge)[0], y: bendPointUtilities.getSegmentPoints(edge)[1]};
moveparam = {
firstTime: true,
firstBendPointPosition: {
x: firstBendPoint.x,
y: firstBendPoint.y
},
edges: edges
};
edgeContainingFirstBendPoint = edge;
firstBendPointFound = true;
}
});
}
});
cy.on("edgebendediting.moveend", function (e, edges) {
if (moveparam != undefined)
{
var initialPos = moveparam.firstBendPointPosition;
var movedFirstBendPoint = {
x: bendPointUtilities.getSegmentPoints(edgeContainingFirstBendPoint)[0],
y: bendPointUtilities.getSegmentPoints(edgeContainingFirstBendPoint)[1]
};
moveparam.positionDiff = {
x: -movedFirstBendPoint.x + initialPos.x,
y: -movedFirstBendPoint.y + initialPos.y
}
delete moveparam.firstBendPointPosition;
if(options().undoable) {
cy.undoRedo().do("moveBendPoints", moveparam);
}
moveparam = undefined;
}
});
cy.on('cxttap', 'edge', eCxtTap = function (event) {
var edge = this;
var menus = cy.contextMenus('get'); // get context menus instance
if(!edgeToHighlightBends || edgeToHighlightBends.id() != edge.id() || bendPointUtilities.isIgnoredEdge(edge)) {
menus.hideMenuItem(removeBendPointCxtMenuId);
menus.hideMenuItem(addBendPointCxtMenuId);
return;
}
var cyPos = event.position || event.cyPosition;
var selectedBendIndex = getContainingBendShapeIndex(cyPos.x, cyPos.y, edge);
if (selectedBendIndex == -1) {
menus.hideMenuItem(removeBendPointCxtMenuId);
menus.showMenuItem(addBendPointCxtMenuId);
bendPointUtilities.currentCtxPos = cyPos;
}
else {
menus.hideMenuItem(addBendPointCxtMenuId);
menus.showMenuItem(removeBendPointCxtMenuId);
bendPointUtilities.currentBendIndex = selectedBendIndex;
}
bendPointUtilities.currentCtxEdge = edge;
});
cy.on('cyedgebendediting.changeBendPoints', 'edge', function() {
var edge = this;
cy.startBatch();
cy.edges().unselect();
edge.select();
cy.trigger('bendPointMovement');
cy.endBatch();
refreshDraws();
});
}
var selectedEdges;
var bendPointsMoving = false;
function keyDown(e) {
var shouldMove = typeof options().moveSelectedBendPointsOnKeyEvents === 'function'
? options().moveSelectedBendPointsOnKeyEvents() : options().moveSelectedBendPointsOnKeyEvents;
if (!shouldMove) {
return;
}
//Checks if the tagname is textarea or input
var tn = document.activeElement.tagName;
if (tn != "TEXTAREA" && tn != "INPUT")
{
switch(e.keyCode){
case 37: case 39: case 38: case 40: // Arrow keys
case 32: e.preventDefault(); break; // Space
default: break; // do not block other keys
}
if (e.keyCode < '37' || e.keyCode > '40') {
return;
}
//Checks if only edges are selected (not any node) and if only 1 edge is selected
//If the second checking is removed the bend points of multiple edges would move
if (cy.edges(":selected").length != cy.elements(":selected").length || cy.edges(":selected").length != 1)
{
return;
}
if (!bendPointsMoving)
{
selectedEdges = cy.edges(':selected');
cy.trigger("edgebendediting.movestart", [selectedEdges]);
bendPointsMoving = true;
}
if (e.altKey && e.which == '38') {
// up arrow and alt
moveBendPoints ({x:0, y:-1},selectedEdges);
}
else if (e.altKey && e.which == '40') {
// down arrow and alt
moveBendPoints ({x:0, y:1},selectedEdges);
}
else if (e.altKey && e.which == '37') {
// left arrow and alt
moveBendPoints ({x:-1, y:0},selectedEdges);
}
else if (e.altKey && e.which == '39') {
// right arrow and alt
moveBendPoints ({x:1, y:0},selectedEdges);
}
else if (e.shiftKey && e.which == '38') {
// up arrow and shift
moveBendPoints ({x:0, y:-10},selectedEdges);
}
else if (e.shiftKey && e.which == '40') {
// down arrow and shift
moveBendPoints ({x:0, y:10},selectedEdges);
}
else if (e.shiftKey && e.which == '37') {
// left arrow and shift
moveBendPoints ({x:-10, y:0},selectedEdges);
}
else if (e.shiftKey && e.which == '39' ) {
// right arrow and shift
moveBendPoints ({x:10, y:0},selectedEdges);
}
else if (e.keyCode == '38') {
// up arrow
moveBendPoints({x: 0, y: -3}, selectedEdges);
}
else if (e.keyCode == '40') {
// down arrow
moveBendPoints ({x:0, y:3},selectedEdges);
}
else if (e.keyCode == '37') {
// left arrow
moveBendPoints ({x:-3, y:0},selectedEdges);
}
else if (e.keyCode == '39') {
//right arrow
moveBendPoints ({x:3, y:0},selectedEdges);
}
}
}
function keyUp(e) {
if (e.keyCode < '37' || e.keyCode > '40') {
return;
}
var shouldMove = typeof options().moveSelectedBendPointsOnKeyEvents === 'function'
? options().moveSelectedBendPointsOnKeyEvents() : options().moveSelectedBendPointsOnKeyEvents;
if (!shouldMove) {
return;
}
cy.trigger("edgebendediting.moveend", [selectedEdges]);
selectedEdges = undefined;
bendPointsMoving = false;
}
document.addEventListener("keydown",keyDown, true);
document.addEventListener("keyup",keyUp, true);
$container.data('cyedgebendediting', data);
},
unbind: function () {
cy.off('position', 'node', ePosition)
.off('remove', 'node', eRemove)
.off('add', 'node', eAdd)
.off('style', 'edge.edgebendediting-hasbendpoints:selected', eStyle)
.off('select', 'edge', eSelect)
.off('unselect', 'edge', eUnselect)
.off('tapstart', 'edge', eTapStart)
.off('tapdrag', eTapDrag)
.off('tapend', eTapEnd)
.off('cxttap', eCxtTap);
cy.unbind("zoom pan", eZoom);
}
};
if (functions[fn]) {
return functions[fn].apply($(cy.container()), Array.prototype.slice.call(arguments, 1));
} else if (typeof fn == 'object' || !fn) {
return functions.init.apply($(cy.container()), arguments);
} else {
$.error('No such function `' + fn + '` for cytoscape.js-edge-bend-editing');
}
return $(this);
};
},{"./bendPointUtilities":2,"./debounce":3,"./registerUndoRedoFunctions":5}],2:[function(_dereq_,module,exports){
var bendPointUtilities = {
currentCtxEdge: undefined,
currentCtxPos: undefined,
currentBendIndex: undefined,
ignoredClasses: undefined,
setIgnoredClasses: function(_ignoredClasses) {
this.ignoredClasses = _ignoredClasses;
},
// initilize bend points based on bendPositionsFcn
initBendPoints: function(bendPositionsFcn, edges) {
for (var i = 0; i < edges.length; i++) {
var edge = edges[i];
if(!this.isIgnoredEdge(edge)) {
// get the bend positions by applying the function for this edge
var bendPositions = bendPositionsFcn.apply(this, edge);
// calculate relative bend positions
var result = this.convertToRelativeBendPositions(edge, bendPositions);
// if there are bend points set weights and distances accordingly and add class to enable style changes
if (result.distances.length > 0) {
edge.data('cyedgebendeditingWeights', result.weights);
edge.data('cyedgebendeditingDistances', result.distances);
edge.addClass('edgebendediting-hasbendpoints');
}
}
}
},
isIgnoredEdge: function(edge) {
for(var i = 0; this.ignoredClasses && i < this.ignoredClasses.length; i++){
if(edge.hasClass(this.ignoredClasses[i]))
return true;
}
return false;
},
//Get the direction of the line from source point to the target point
getLineDirection: function(srcPoint, tgtPoint){
if(srcPoint.y == tgtPoint.y && srcPoint.x < tgtPoint.x){
return 1;
}
if(srcPoint.y < tgtPoint.y && srcPoint.x < tgtPoint.x){
return 2;
}
if(srcPoint.y < tgtPoint.y && srcPoint.x == tgtPoint.x){
return 3;
}
if(srcPoint.y < tgtPoint.y && srcPoint.x > tgtPoint.x){
return 4;
}
if(srcPoint.y == tgtPoint.y && srcPoint.x > tgtPoint.x){
return 5;
}
if(srcPoint.y > tgtPoint.y && srcPoint.x > tgtPoint.x){
return 6;
}
if(srcPoint.y > tgtPoint.y && srcPoint.x == tgtPoint.x){
return 7;
}
return 8;//if srcPoint.y > tgtPoint.y and srcPoint.x < tgtPoint.x
},
getSrcTgtPointsAndTangents: function (edge) {
var sourceNode = edge.source();
var targetNode = edge.target();
var tgtPosition = targetNode.position();
var srcPosition = sourceNode.position();
var srcPoint = sourceNode.position();
var tgtPoint = targetNode.position();
var m1 = (tgtPoint.y - srcPoint.y) / (tgtPoint.x - srcPoint.x);
var m2 = -1 / m1;
return {
m1: m1,
m2: m2,
srcPoint: srcPoint,
tgtPoint: tgtPoint
};
},
getIntersection: function(edge, point, srcTgtPointsAndTangents){
if (srcTgtPointsAndTangents === undefined) {
srcTgtPointsAndTangents = this.getSrcTgtPointsAndTangents(edge);
}
var srcPoint = srcTgtPointsAndTangents.srcPoint;
var tgtPoint = srcTgtPointsAndTangents.tgtPoint;
var m1 = srcTgtPointsAndTangents.m1;
var m2 = srcTgtPointsAndTangents.m2;
var intersectX;
var intersectY;
if(m1 == Infinity || m1 == -Infinity){
intersectX = srcPoint.x;
intersectY = point.y;
}
else if(m1 == 0){
intersectX = point.x;
intersectY = srcPoint.y;
}
else {
var a1 = srcPoint.y - m1 * srcPoint.x;
var a2 = point.y - m2 * point.x;
intersectX = (a2 - a1) / (m1 - m2);
intersectY = m1 * intersectX + a1;
}
//Intersection point is the intersection of the lines passing through the nodes and
//passing through the bend point and perpendicular to the other line
var intersectionPoint = {
x: intersectX,
y: intersectY
};
return intersectionPoint;
},
getSegmentPoints: function(edge) {
if( edge.css('curve-style') !== 'segments' ) {
return undefined;
}
var segpts = [];
var segmentWs = edge.pstyle( 'segment-weights' ).pfValue;
var segmentDs = edge.pstyle( 'segment-distances' ).pfValue;
var segmentsN = Math.min( segmentWs.length, segmentDs.length );
var srcPos = edge.source().position();
var tgtPos = edge.target().position();
var dy = ( tgtPos.y - srcPos.y );
var dx = ( tgtPos.x - srcPos.x );
var l = Math.sqrt( dx * dx + dy * dy );
var vector = {
x: dx,
y: dy
};
var vectorNorm = {
x: vector.x / l,
y: vector.y / l
};
var vectorNormInverse = {
x: -vectorNorm.y,
y: vectorNorm.x
};
for( var s = 0; s < segmentsN; s++ ){
var w = segmentWs[ s ];
var d = segmentDs[ s ];
// d = swappedDirection ? -d : d;
//