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553 lines
18 KiB
553 lines
18 KiB
var util = require('../../util');
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var Node = require('../Node');
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/**
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* Creation of the SectorMixin var.
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*
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* This contains all the functions the Network object can use to employ the sector system.
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* The sector system is always used by Network, though the benefits only apply to the use of clustering.
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* If clustering is not used, there is no overhead except for a duplicate object with references to nodes and edges.
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*/
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/**
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* This function is only called by the setData function of the Network object.
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* This loads the global references into the active sector. This initializes the sector.
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*
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* @private
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*/
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exports._putDataInSector = function() {
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this.sectors["active"][this._sector()].nodes = this.nodes;
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this.sectors["active"][this._sector()].edges = this.edges;
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this.sectors["active"][this._sector()].nodeIndices = this.nodeIndices;
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};
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/**
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* /**
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* This function sets the global references to nodes, edges and nodeIndices back to
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* those of the supplied (active) sector. If a type is defined, do the specific type
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*
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* @param {String} sectorId
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* @param {String} [sectorType] | "active" or "frozen"
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* @private
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*/
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exports._switchToSector = function(sectorId, sectorType) {
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if (sectorType === undefined || sectorType == "active") {
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this._switchToActiveSector(sectorId);
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}
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else {
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this._switchToFrozenSector(sectorId);
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}
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};
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/**
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* This function sets the global references to nodes, edges and nodeIndices back to
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* those of the supplied active sector.
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*
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* @param sectorId
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* @private
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*/
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exports._switchToActiveSector = function(sectorId) {
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this.nodeIndices = this.sectors["active"][sectorId]["nodeIndices"];
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this.nodes = this.sectors["active"][sectorId]["nodes"];
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this.edges = this.sectors["active"][sectorId]["edges"];
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};
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/**
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* This function sets the global references to nodes, edges and nodeIndices back to
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* those of the supplied active sector.
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*
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* @private
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*/
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exports._switchToSupportSector = function() {
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this.nodeIndices = this.sectors["support"]["nodeIndices"];
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this.nodes = this.sectors["support"]["nodes"];
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this.edges = this.sectors["support"]["edges"];
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};
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/**
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* This function sets the global references to nodes, edges and nodeIndices back to
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* those of the supplied frozen sector.
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*
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* @param sectorId
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* @private
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*/
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exports._switchToFrozenSector = function(sectorId) {
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this.nodeIndices = this.sectors["frozen"][sectorId]["nodeIndices"];
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this.nodes = this.sectors["frozen"][sectorId]["nodes"];
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this.edges = this.sectors["frozen"][sectorId]["edges"];
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};
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/**
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* This function sets the global references to nodes, edges and nodeIndices back to
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* those of the currently active sector.
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*
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* @private
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*/
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exports._loadLatestSector = function() {
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this._switchToSector(this._sector());
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};
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/**
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* This function returns the currently active sector Id
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*
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* @returns {String}
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* @private
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*/
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exports._sector = function() {
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return this.activeSector[this.activeSector.length-1];
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};
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/**
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* This function returns the previously active sector Id
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*
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* @returns {String}
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* @private
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*/
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exports._previousSector = function() {
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if (this.activeSector.length > 1) {
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return this.activeSector[this.activeSector.length-2];
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}
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else {
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throw new TypeError('there are not enough sectors in the this.activeSector array.');
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}
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};
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/**
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* We add the active sector at the end of the this.activeSector array
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* This ensures it is the currently active sector returned by _sector() and it reaches the top
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* of the activeSector stack. When we reverse our steps we move from the end to the beginning of this stack.
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*
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* @param newId
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* @private
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*/
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exports._setActiveSector = function(newId) {
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this.activeSector.push(newId);
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};
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/**
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* We remove the currently active sector id from the active sector stack. This happens when
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* we reactivate the previously active sector
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*
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* @private
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*/
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exports._forgetLastSector = function() {
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this.activeSector.pop();
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};
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/**
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* This function creates a new active sector with the supplied newId. This newId
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* is the expanding node id.
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*
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* @param {String} newId | Id of the new active sector
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* @private
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*/
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exports._createNewSector = function(newId) {
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// create the new sector
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this.sectors["active"][newId] = {"nodes":{},
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"edges":{},
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"nodeIndices":[],
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"formationScale": this.scale,
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"drawingNode": undefined};
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// create the new sector render node. This gives visual feedback that you are in a new sector.
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this.sectors["active"][newId]['drawingNode'] = new Node(
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{id:newId,
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color: {
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background: "#eaefef",
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border: "495c5e"
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}
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},{},{},this.constants);
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this.sectors["active"][newId]['drawingNode'].clusterSize = 2;
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};
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/**
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* This function removes the currently active sector. This is called when we create a new
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* active sector.
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*
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* @param {String} sectorId | Id of the active sector that will be removed
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* @private
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*/
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exports._deleteActiveSector = function(sectorId) {
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delete this.sectors["active"][sectorId];
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};
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/**
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* This function removes the currently active sector. This is called when we reactivate
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* the previously active sector.
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*
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* @param {String} sectorId | Id of the active sector that will be removed
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* @private
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*/
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exports._deleteFrozenSector = function(sectorId) {
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delete this.sectors["frozen"][sectorId];
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};
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/**
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* Freezing an active sector means moving it from the "active" object to the "frozen" object.
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* We copy the references, then delete the active entree.
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*
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* @param sectorId
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* @private
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*/
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exports._freezeSector = function(sectorId) {
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// we move the set references from the active to the frozen stack.
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this.sectors["frozen"][sectorId] = this.sectors["active"][sectorId];
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// we have moved the sector data into the frozen set, we now remove it from the active set
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this._deleteActiveSector(sectorId);
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};
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/**
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* This is the reverse operation of _freezeSector. Activating means moving the sector from the "frozen"
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* object to the "active" object.
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*
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* @param sectorId
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* @private
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*/
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exports._activateSector = function(sectorId) {
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// we move the set references from the frozen to the active stack.
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this.sectors["active"][sectorId] = this.sectors["frozen"][sectorId];
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// we have moved the sector data into the active set, we now remove it from the frozen stack
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this._deleteFrozenSector(sectorId);
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};
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/**
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* This function merges the data from the currently active sector with a frozen sector. This is used
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* in the process of reverting back to the previously active sector.
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* The data that is placed in the frozen (the previously active) sector is the node that has been removed from it
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* upon the creation of a new active sector.
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*
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* @param sectorId
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* @private
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*/
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exports._mergeThisWithFrozen = function(sectorId) {
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// copy all nodes
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for (var nodeId in this.nodes) {
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if (this.nodes.hasOwnProperty(nodeId)) {
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this.sectors["frozen"][sectorId]["nodes"][nodeId] = this.nodes[nodeId];
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}
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}
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// copy all edges (if not fully clustered, else there are no edges)
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for (var edgeId in this.edges) {
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if (this.edges.hasOwnProperty(edgeId)) {
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this.sectors["frozen"][sectorId]["edges"][edgeId] = this.edges[edgeId];
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}
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}
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// merge the nodeIndices
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for (var i = 0; i < this.nodeIndices.length; i++) {
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this.sectors["frozen"][sectorId]["nodeIndices"].push(this.nodeIndices[i]);
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}
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};
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/**
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* This clusters the sector to one cluster. It was a single cluster before this process started so
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* we revert to that state. The clusterToFit function with a maximum size of 1 node does this.
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*
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* @private
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*/
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exports._collapseThisToSingleCluster = function() {
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this.clusterToFit(1,false);
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};
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/**
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* We create a new active sector from the node that we want to open.
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*
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* @param node
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* @private
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*/
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exports._addSector = function(node) {
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// this is the currently active sector
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var sector = this._sector();
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// // this should allow me to select nodes from a frozen set.
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// if (this.sectors['active'][sector]["nodes"].hasOwnProperty(node.id)) {
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// console.log("the node is part of the active sector");
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// }
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// else {
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// console.log("I dont know what the fuck happened!!");
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// }
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// when we switch to a new sector, we remove the node that will be expanded from the current nodes list.
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delete this.nodes[node.id];
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var unqiueIdentifier = util.randomUUID();
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// we fully freeze the currently active sector
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this._freezeSector(sector);
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// we create a new active sector. This sector has the Id of the node to ensure uniqueness
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this._createNewSector(unqiueIdentifier);
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// we add the active sector to the sectors array to be able to revert these steps later on
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this._setActiveSector(unqiueIdentifier);
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// we redirect the global references to the new sector's references. this._sector() now returns unqiueIdentifier
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this._switchToSector(this._sector());
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// finally we add the node we removed from our previous active sector to the new active sector
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this.nodes[node.id] = node;
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};
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/**
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* We close the sector that is currently open and revert back to the one before.
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* If the active sector is the "default" sector, nothing happens.
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*
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* @private
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*/
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exports._collapseSector = function() {
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// the currently active sector
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var sector = this._sector();
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// we cannot collapse the default sector
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if (sector != "default") {
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if ((this.nodeIndices.length == 1) ||
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(this.sectors["active"][sector]["drawingNode"].width*this.scale < this.constants.clustering.screenSizeThreshold * this.frame.canvas.clientWidth) ||
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(this.sectors["active"][sector]["drawingNode"].height*this.scale < this.constants.clustering.screenSizeThreshold * this.frame.canvas.clientHeight)) {
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var previousSector = this._previousSector();
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// we collapse the sector back to a single cluster
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this._collapseThisToSingleCluster();
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// we move the remaining nodes, edges and nodeIndices to the previous sector.
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// This previous sector is the one we will reactivate
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this._mergeThisWithFrozen(previousSector);
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// the previously active (frozen) sector now has all the data from the currently active sector.
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// we can now delete the active sector.
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this._deleteActiveSector(sector);
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// we activate the previously active (and currently frozen) sector.
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this._activateSector(previousSector);
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// we load the references from the newly active sector into the global references
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this._switchToSector(previousSector);
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// we forget the previously active sector because we reverted to the one before
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this._forgetLastSector();
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// finally, we update the node index list.
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this._updateNodeIndexList();
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// we refresh the list with calulation nodes and calculation node indices.
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this._updateCalculationNodes();
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}
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}
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};
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/**
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* This runs a function in all active sectors. This is used in _redraw() and the _initializeForceCalculation().
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*
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* @param {String} runFunction | This is the NAME of a function we want to call in all active sectors
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* | we dont pass the function itself because then the "this" is the window object
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* | instead of the Network object
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* @param {*} [argument] | Optional: arguments to pass to the runFunction
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* @private
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*/
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exports._doInAllActiveSectors = function(runFunction,argument) {
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var returnValues = [];
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if (argument === undefined) {
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for (var sector in this.sectors["active"]) {
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if (this.sectors["active"].hasOwnProperty(sector)) {
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// switch the global references to those of this sector
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this._switchToActiveSector(sector);
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returnValues.push( this[runFunction]() );
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}
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}
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}
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else {
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for (var sector in this.sectors["active"]) {
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if (this.sectors["active"].hasOwnProperty(sector)) {
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// switch the global references to those of this sector
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this._switchToActiveSector(sector);
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var args = Array.prototype.splice.call(arguments, 1);
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if (args.length > 1) {
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returnValues.push( this[runFunction](args[0],args[1]) );
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}
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else {
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returnValues.push( this[runFunction](argument) );
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}
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}
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}
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}
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// we revert the global references back to our active sector
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this._loadLatestSector();
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return returnValues;
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};
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/**
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* This runs a function in all active sectors. This is used in _redraw() and the _initializeForceCalculation().
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*
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* @param {String} runFunction | This is the NAME of a function we want to call in all active sectors
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* | we dont pass the function itself because then the "this" is the window object
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* | instead of the Network object
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* @param {*} [argument] | Optional: arguments to pass to the runFunction
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* @private
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*/
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exports._doInSupportSector = function(runFunction,argument) {
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var returnValues = false;
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if (argument === undefined) {
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this._switchToSupportSector();
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returnValues = this[runFunction]();
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}
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else {
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this._switchToSupportSector();
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var args = Array.prototype.splice.call(arguments, 1);
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if (args.length > 1) {
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returnValues = this[runFunction](args[0],args[1]);
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}
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else {
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returnValues = this[runFunction](argument);
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}
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}
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// we revert the global references back to our active sector
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this._loadLatestSector();
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return returnValues;
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};
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/**
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* This runs a function in all frozen sectors. This is used in the _redraw().
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*
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* @param {String} runFunction | This is the NAME of a function we want to call in all active sectors
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* | we don't pass the function itself because then the "this" is the window object
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* | instead of the Network object
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* @param {*} [argument] | Optional: arguments to pass to the runFunction
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* @private
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*/
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exports._doInAllFrozenSectors = function(runFunction,argument) {
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if (argument === undefined) {
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for (var sector in this.sectors["frozen"]) {
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if (this.sectors["frozen"].hasOwnProperty(sector)) {
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// switch the global references to those of this sector
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this._switchToFrozenSector(sector);
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this[runFunction]();
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}
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}
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}
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else {
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for (var sector in this.sectors["frozen"]) {
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if (this.sectors["frozen"].hasOwnProperty(sector)) {
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// switch the global references to those of this sector
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this._switchToFrozenSector(sector);
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var args = Array.prototype.splice.call(arguments, 1);
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if (args.length > 1) {
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this[runFunction](args[0],args[1]);
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}
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else {
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this[runFunction](argument);
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}
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}
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}
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}
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this._loadLatestSector();
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};
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/**
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* This runs a function in all sectors. This is used in the _redraw().
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*
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* @param {String} runFunction | This is the NAME of a function we want to call in all active sectors
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* | we don't pass the function itself because then the "this" is the window object
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* | instead of the Network object
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* @param {*} [argument] | Optional: arguments to pass to the runFunction
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* @private
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*/
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exports._doInAllSectors = function(runFunction,argument) {
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var args = Array.prototype.splice.call(arguments, 1);
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if (argument === undefined) {
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this._doInAllActiveSectors(runFunction);
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this._doInAllFrozenSectors(runFunction);
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}
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else {
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if (args.length > 1) {
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this._doInAllActiveSectors(runFunction,args[0],args[1]);
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this._doInAllFrozenSectors(runFunction,args[0],args[1]);
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}
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else {
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this._doInAllActiveSectors(runFunction,argument);
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this._doInAllFrozenSectors(runFunction,argument);
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}
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}
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};
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/**
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* This clears the nodeIndices list. We cannot use this.nodeIndices = [] because we would break the link with the
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* active sector. Thus we clear the nodeIndices in the active sector, then reconnect the this.nodeIndices to it.
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*
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* @private
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*/
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exports._clearNodeIndexList = function() {
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var sector = this._sector();
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this.sectors["active"][sector]["nodeIndices"] = [];
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this.nodeIndices = this.sectors["active"][sector]["nodeIndices"];
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};
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/**
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* Draw the encompassing sector node
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*
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* @param ctx
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* @param sectorType
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* @private
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*/
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exports._drawSectorNodes = function(ctx,sectorType) {
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var minY = 1e9, maxY = -1e9, minX = 1e9, maxX = -1e9, node;
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for (var sector in this.sectors[sectorType]) {
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if (this.sectors[sectorType].hasOwnProperty(sector)) {
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if (this.sectors[sectorType][sector]["drawingNode"] !== undefined) {
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this._switchToSector(sector,sectorType);
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minY = 1e9; maxY = -1e9; minX = 1e9; maxX = -1e9;
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for (var nodeId in this.nodes) {
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if (this.nodes.hasOwnProperty(nodeId)) {
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node = this.nodes[nodeId];
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node.resize(ctx);
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if (minX > node.x - 0.5 * node.width) {minX = node.x - 0.5 * node.width;}
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if (maxX < node.x + 0.5 * node.width) {maxX = node.x + 0.5 * node.width;}
|
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if (minY > node.y - 0.5 * node.height) {minY = node.y - 0.5 * node.height;}
|
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if (maxY < node.y + 0.5 * node.height) {maxY = node.y + 0.5 * node.height;}
|
|
}
|
|
}
|
|
node = this.sectors[sectorType][sector]["drawingNode"];
|
|
node.x = 0.5 * (maxX + minX);
|
|
node.y = 0.5 * (maxY + minY);
|
|
node.width = 2 * (node.x - minX);
|
|
node.height = 2 * (node.y - minY);
|
|
node.options.radius = Math.sqrt(Math.pow(0.5*node.width,2) + Math.pow(0.5*node.height,2));
|
|
node.setScale(this.scale);
|
|
node._drawCircle(ctx);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
exports._drawAllSectorNodes = function(ctx) {
|
|
this._drawSectorNodes(ctx,"frozen");
|
|
this._drawSectorNodes(ctx,"active");
|
|
this._loadLatestSector();
|
|
};
|