增加淘宝群内容，修改部分文件组织
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// Copyright 2011 David Galles, University of San Francisco. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other materials
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// provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// The views and conclusions contained in the software and documentation are those of the
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// authors and should not be interpreted as representing official policies, either expressed
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// or implied, of the University of San Francisco
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function Kruskal(am, w, h)
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{
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this.init(am, w, h);
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}
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Kruskal.HIGHLIGHT_CIRCLE_COLOR = "#000000";
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Kruskal.SET_ARRAY_ELEM_WIDTH = 25;
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Kruskal.SET_ARRAY_ELEM_HEIGHT = 25;
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Kruskal.SET_ARRAY_START_X = 50;
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Kruskal.SET_ARRAY_START_Y = 130;
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Kruskal.EDGE_LIST_ELEM_WIDTH = 40;
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Kruskal.EDGE_LIST_ELEM_HEIGHT = 40;
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Kruskal.EDGE_LIST_COLUMN_WIDTH = 100;
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Kruskal.EDGE_LIST_MAX_PER_COLUMN = 10;
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Kruskal.EDGE_LIST_START_X = 150;
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Kruskal.EDGE_LIST_START_Y = 130;
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Kruskal.FIND_LABEL_1_X = 30;
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Kruskal.FIND_LABEL_2_X = 100;
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Kruskal.FIND_LABEL_1_Y = 30;
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Kruskal.FIND_LABEL_2_Y = Kruskal.FIND_LABEL_1_Y;
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Kruskal.MESSAGE_LABEL_X = 30;
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Kruskal.MESSAGE_LABEL_Y = 50;
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Kruskal.HIGHLIGHT_CIRCLE_COLOR_1 = "#FFAAAA";
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Kruskal.HIGHLIGHT_CIRCLE_COLOR_2 = "#FF0000";
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Kruskal.prototype = new Graph();
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Kruskal.prototype.constructor = Kruskal;
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Kruskal.superclass = Graph.prototype;
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Kruskal.prototype.addControls = function()
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{
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this.startButton = addControlToAlgorithmBar("Button", "Run Kruskal");
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this.startButton.onclick = this.startCallback.bind(this);
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Kruskal.superclass.addControls.call(this, false);
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}
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Kruskal.prototype.init = function(am, w, h)
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{
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this.showEdgeCosts = true;
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Kruskal.superclass.init.call(this, am, w, h, false, false); // TODO: add no edge label flag to this?
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// Setup called in base class init function
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}
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Kruskal.prototype.setup = function()
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{
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Kruskal.superclass.setup.call(this);
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this.messageID = new Array();
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this.commands = new Array();
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this.setID = new Array(this.size);
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this.setIndexID = new Array(this.size);
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this.setData = new Array(this.size);
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var i;
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for (i = 0; i < this.size; i++)
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{
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this.setID[i] = this.nextIndex++;
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this.setIndexID[i] = this.nextIndex++;
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this.cmd("CreateRectangle", this.setID[i], "-1", Kruskal.SET_ARRAY_ELEM_WIDTH, Kruskal.SET_ARRAY_ELEM_HEIGHT, Kruskal.SET_ARRAY_START_X, Kruskal.SET_ARRAY_START_Y + i*Kruskal.SET_ARRAY_ELEM_HEIGHT);
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this.cmd("CreateLabel", this.setIndexID[i], i, Kruskal.SET_ARRAY_START_X - Kruskal.SET_ARRAY_ELEM_WIDTH ,Kruskal.SET_ARRAY_START_Y + i*Kruskal.SET_ARRAY_ELEM_HEIGHT);
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this.cmd("SetForegroundColor", this.setIndexID[i], VERTEX_INDEX_COLOR);
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}
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this.cmd("CreateLabel", this.nextIndex++, "Disjoint Set", Kruskal.SET_ARRAY_START_X - 1 * Kruskal.SET_ARRAY_ELEM_WIDTH, Kruskal.SET_ARRAY_START_Y - Kruskal.SET_ARRAY_ELEM_HEIGHT * 1.5, 0);
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this.animationManager.setAllLayers([0, this.currentLayer]);
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this.animationManager.StartNewAnimation(this.commands);
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this.animationManager.skipForward();
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this.animationManager.clearHistory();
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}
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Kruskal.prototype.startCallback = function(event)
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{
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this.implementAction(this.doKruskal.bind(this),"");
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}
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Kruskal.prototype.disjointSetFind = function(valueToFind, highlightCircleID)
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{
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this.cmd("SetTextColor", this.setID[valueToFind], "#FF0000");
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this.cmd("Step");
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while (this.setData[valueToFind] >= 0)
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{
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this.cmd("SetTextColor", this.setID[valueToFind], "#000000");
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this.cmd("Move", highlightCircleID, Kruskal.SET_ARRAY_START_X - Kruskal.SET_ARRAY_ELEM_WIDTH ,Kruskal.SET_ARRAY_START_Y + this.setData[valueToFind]*Kruskal.SET_ARRAY_ELEM_HEIGHT);
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this.cmd("Step");
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valueToFind = this.setData[valueToFind];
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this.cmd("SetTextColor", this.setID[valueToFind], "#FF0000");
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this.cmd("Step");
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}
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this.cmd("SetTextColor", this.setID[valueToFind], "#000000");
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return valueToFind;
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}
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Kruskal.prototype.doKruskal = function(ignored)
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{
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this.commands = new Array();
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this.edgesListLeftID = new Array();
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this.edgesListRightID = new Array();
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this.edgesListLeft = new Array();
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this.edgesListRight = new Array();
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var i;
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var j;
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for (i = 0; i < this.size; i++)
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{
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this.setData[i] = -1;
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this.cmd("SetText", this.setID[i], "-1");
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}
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this.recolorGraph();
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// Create Edge List
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var top;
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for (i = 0; i < this.size; i++)
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{
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for (j = i+1; j < this.size; j++)
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{
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if (this.adj_matrix[i][j] >= 0)
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{
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this.edgesListLeftID.push(this.nextIndex++);
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this.edgesListRightID.push(this.nextIndex++);
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top = this.edgesListLeftID.length - 1;
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this.edgesListLeft.push(i);
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this.edgesListRight.push(j);
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this.cmd("CreateLabel", this.edgesListLeftID[top], i, Kruskal.EDGE_LIST_START_X + Math.floor(top / Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_COLUMN_WIDTH,
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Kruskal.EDGE_LIST_START_Y + (top % Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_ELEM_HEIGHT);
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this.cmd("CreateLabel", this.edgesListRightID[top], j, Kruskal.EDGE_LIST_START_X +Kruskal.EDGE_LIST_ELEM_WIDTH + Math.floor(top / Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_COLUMN_WIDTH,
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Kruskal.EDGE_LIST_START_Y + (top % Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_ELEM_HEIGHT);
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this.cmd("Connect", this.edgesListLeftID[top], this.edgesListRightID[top], EDGE_COLOR, 0, 0, this.adj_matrix[i][j])
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}
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}
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}
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this.cmd("Step");
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// Sort edge list based on edge cost
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var edgeCount = this.edgesListLeftID.length;
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var tmpLeftID;
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var tmpRightID;
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var tmpLeft;
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var tmpRight;
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for (i = 1; i < edgeCount; i++)
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{
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tmpLeftID = this.edgesListLeftID[i];
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tmpRightID = this.edgesListRightID[i];
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tmpLeft = this.edgesListLeft[i];
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tmpRight = this.edgesListRight[i];
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j = i;
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while (j > 0 && this.adj_matrix[this.edgesListLeft[j-1]][this.edgesListRight[j-1]] > this.adj_matrix[tmpLeft][tmpRight])
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{
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this.edgesListLeft[j] = this.edgesListLeft[j-1];
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this.edgesListRight[j] = this.edgesListRight[j-1];
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this.edgesListLeftID[j] = this.edgesListLeftID[j-1];
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this.edgesListRightID[j] = this.edgesListRightID[j-1];
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j = j -1
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}
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this.edgesListLeft[j] = tmpLeft;
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this.edgesListRight[j] = tmpRight;
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this.edgesListLeftID[j] = tmpLeftID;
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this.edgesListRightID[j] = tmpRightID;
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}
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for (i = 0; i < edgeCount; i++)
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{
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this.cmd("Move", this.edgesListLeftID[i], Kruskal.EDGE_LIST_START_X + Math.floor(i / Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_COLUMN_WIDTH,
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Kruskal.EDGE_LIST_START_Y + (i % Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_ELEM_HEIGHT);
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this.cmd("Move", this.edgesListRightID[i], Kruskal.EDGE_LIST_START_X +Kruskal.EDGE_LIST_ELEM_WIDTH + Math.floor(i / Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_COLUMN_WIDTH,
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Kruskal.EDGE_LIST_START_Y + (i % Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_ELEM_HEIGHT);
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}
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this.cmd("Step");
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var findLabelLeft = this.nextIndex++;
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var findLabelRight = this.nextIndex++;
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var highlightCircle1 = this.nextIndex++;
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var highlightCircle2 = this.nextIndex++;
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var moveLabelID = this.nextIndex++;
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var messageLabelID = this.nextIndex++;
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var edgesAdded = 0;
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var nextListIndex = 0;
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this.cmd("CreateLabel", findLabelLeft, "", Kruskal.FIND_LABEL_1_X, Kruskal.FIND_LABEL_1_Y, 0);
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this.cmd("CreateLabel", findLabelRight, "", Kruskal.FIND_LABEL_2_X, Kruskal.FIND_LABEL_2_Y, 0);
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while (edgesAdded < this.size - 1 && nextListIndex < edgeCount)
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{
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this.cmd("SetEdgeHighlight", this.edgesListLeftID[nextListIndex],this.edgesListRightID[nextListIndex], 1);
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this.highlightEdge(this.edgesListLeft[nextListIndex], this.edgesListRight[nextListIndex], 1)
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this.highlightEdge(this.edgesListRight[nextListIndex], this.edgesListLeft[nextListIndex], 1)
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this.cmd("SetText", findLabelLeft, "find(" + String(this.edgesListLeft[nextListIndex]) + ") = ");
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this.cmd("CreateHighlightCircle", highlightCircle1, Kruskal.HIGHLIGHT_CIRCLE_COLOR_1, Kruskal.EDGE_LIST_START_X + Math.floor(nextListIndex / Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_COLUMN_WIDTH,
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Kruskal.EDGE_LIST_START_Y + (nextListIndex % Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_ELEM_HEIGHT, 15);
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this.cmd("Move", highlightCircle1, Kruskal.SET_ARRAY_START_X - Kruskal.SET_ARRAY_ELEM_WIDTH ,Kruskal.SET_ARRAY_START_Y + this.edgesListLeft[nextListIndex]*Kruskal.SET_ARRAY_ELEM_HEIGHT);
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this.cmd("Step");
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var left = this.disjointSetFind(this.edgesListLeft[nextListIndex], highlightCircle1);
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this.cmd("SetText", findLabelLeft, "find(" + String(this.edgesListLeft[nextListIndex]) + ") = " + String(left));
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this.cmd("SetText", findLabelRight, "find(" + String(this.edgesListRight[nextListIndex]) + ") = ");
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this.cmd("CreateHighlightCircle", highlightCircle2, Kruskal.HIGHLIGHT_CIRCLE_COLOR_2, Kruskal.EDGE_LIST_START_X +Kruskal.EDGE_LIST_ELEM_WIDTH + Math.floor(nextListIndex / Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_COLUMN_WIDTH,
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Kruskal.EDGE_LIST_START_Y + (nextListIndex % Kruskal.EDGE_LIST_MAX_PER_COLUMN) * Kruskal.EDGE_LIST_ELEM_HEIGHT, 15);
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this.cmd("Move", highlightCircle2, Kruskal.SET_ARRAY_START_X - Kruskal.SET_ARRAY_ELEM_WIDTH ,Kruskal.SET_ARRAY_START_Y + this.edgesListRight[nextListIndex]*Kruskal.SET_ARRAY_ELEM_HEIGHT);
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this.cmd("Step");
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var right = this.disjointSetFind(this.edgesListRight[nextListIndex], highlightCircle2);
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this.cmd("SetText", findLabelRight, "find(" + String(this.edgesListRight[nextListIndex]) + ") = " + String(right));
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this.cmd("Step");
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if (left != right)
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{
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this.cmd("CreateLabel", messageLabelID, "Vertices in different trees. Add edge to tree: Union(" + String(left) + "," + String(right) + ")", Kruskal.MESSAGE_LABEL_X, Kruskal.MESSAGE_LABEL_Y, 0);
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this.cmd("Step");
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this.highlightEdge(this.edgesListLeft[nextListIndex], this.edgesListRight[nextListIndex], 1)
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this.highlightEdge(this.edgesListRight[nextListIndex], this.edgesListLeft[nextListIndex], 1)
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edgesAdded++;
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this.setEdgeColor(this.edgesListLeft[nextListIndex], this.edgesListRight[nextListIndex], "#FF0000");
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this.setEdgeColor( this.edgesListRight[nextListIndex], this.edgesListLeft[nextListIndex], "#FF0000");
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if (this.setData[left] < this.setData[right])
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{
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this.cmd("SetText", this.setID[right], "")
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this.cmd("CreateLabel", moveLabelID, this.setData[right], Kruskal.SET_ARRAY_START_X, Kruskal.SET_ARRAY_START_Y + right*Kruskal.SET_ARRAY_ELEM_HEIGHT);
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this.cmd("Move", moveLabelID, Kruskal.SET_ARRAY_START_X, Kruskal.SET_ARRAY_START_Y + left*Kruskal.SET_ARRAY_ELEM_HEIGHT);
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this.cmd("Step");
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this.cmd("Delete", moveLabelID);
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this.setData[left] = this.setData[left] + this.setData[right]
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this.setData[right] = left;
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}
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else
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{
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this.cmd("SetText", this.setID[left], "")
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this.cmd("CreateLabel", moveLabelID, this.setData[left], Kruskal.SET_ARRAY_START_X, Kruskal.SET_ARRAY_START_Y + left*Kruskal.SET_ARRAY_ELEM_HEIGHT);
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this.cmd("Move", moveLabelID, Kruskal.SET_ARRAY_START_X, Kruskal.SET_ARRAY_START_Y + right*Kruskal.SET_ARRAY_ELEM_HEIGHT);
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this.cmd("Step");
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this.cmd("Delete", moveLabelID);
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this.setData[right] = this.setData[right] + this.setData[left]
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this.setData[left] = right;
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}
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this.cmd("SetText", this.setID[left], this.setData[left]);
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this.cmd("SetText", this.setID[right], this.setData[right]);
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}
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else
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{
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this.cmd("CreateLabel", messageLabelID, "Vertices in the same tree. Skip edge", Kruskal.MESSAGE_LABEL_X, Kruskal.MESSAGE_LABEL_Y, 0);
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this.cmd("Step");
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}
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this.highlightEdge(this.edgesListLeft[nextListIndex], this.edgesListRight[nextListIndex], 0)
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this.highlightEdge(this.edgesListRight[nextListIndex], this.edgesListLeft[nextListIndex], 0)
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this.cmd("Delete", messageLabelID);
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this.cmd("Delete", highlightCircle1);
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this.cmd("Delete", highlightCircle2);
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this.cmd("Delete", this.edgesListLeftID[nextListIndex]);
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this.cmd("Delete", this.edgesListRightID[nextListIndex]);
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this.cmd("SetText", findLabelLeft, "");
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this.cmd("SetText", findLabelRight, "");
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nextListIndex++;
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}
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this.cmd("Delete", findLabelLeft);
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this.cmd("Delete", findLabelRight);
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return this.commands
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}
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Kruskal.prototype.reset = function()
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{
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this.messageID = new Array();
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}
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Kruskal.prototype.enableUI = function(event)
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{
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this.startButton.disabled = false;
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Kruskal.superclass.enableUI.call(this,event);
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}
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Kruskal.prototype.disableUI = function(event)
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{
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this.startButton.disabled = true;
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Kruskal.superclass.disableUI.call(this, event);
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}
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var currentAlg;
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function init()
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{
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var animManag = initCanvas();
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currentAlg = new Kruskal(animManag, canvas.width, canvas.height);
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}
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||||
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