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ConnectedComponent.js 15.42 KB
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morris authored 2020年01月31日 14:34 +08:00 . init
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// Copyright 2011 David Galles, University of San Francisco. All rights reserved.

//

// Redistribution and use in source and binary forms, with or without modification, are

// permitted provided that the following conditions are met:

//

// 1. Redistributions of source code must retain the above copyright notice, this list of

// conditions and the following disclaimer.

//

// 2. Redistributions in binary form must reproduce the above copyright notice, this list

// of conditions and the following disclaimer in the documentation and/or other materials

// provided with the distribution.

//

// THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY EXPRESS OR IMPLIED

// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON

// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//

// The views and conclusions contained in the software and documentation are those of the

// authors and should not be interpreted as representing official policies, either expressed

// or implied, of the University of San Francisco





var AUX_ARRAY_WIDTH = 25;

var AUX_ARRAY_HEIGHT = 25;

var AUX_ARRAY_START_Y = 100;



var VISITED_START_X = 475;

var PARENT_START_X = 400;





var D_X_POS_SMALL = [760, 685, 915, 610, 910, 685, 915, 760];

var F_X_POS_SMALL = [760, 685, 915, 610, 910, 685, 915, 760];







var D_Y_POS_SMALL = [18, 118, 118, 218, 218, 318, 318, 418];

var F_Y_POS_SMALL = [32, 132, 132, 232, 232, 332, 332, 432];



var D_X_POS_LARGE = [560, 660, 760, 860,

									610, 710, 810,

									560, 660, 760, 860,

									610, 710, 810,

									560, 660, 760, 860];



var F_X_POS_LARGE = [560, 660, 760, 860,

									610, 710, 810,

									560, 660, 760, 860,

									610, 710, 810,

									560, 660, 760, 860];







var D_Y_POS_LARGE = [037, 037, 037, 037,

									137, 137, 137,

									237, 237, 237, 237, 

									337, 337, 337, 

									437, 437, 437, 437];



var F_Y_POS_LARGE = [62, 62, 62, 62,

									162, 162, 162,

									262, 262, 262, 262, 

									362, 362, 362, 

									462, 462, 462, 462];





var HIGHLIGHT_CIRCLE_COLOR = "#000000";

var DFS_TREE_COLOR = "#0000FF";





function ConnectedComponent(am, w, h)

{

	this.init(am, w, h);

	

}



ConnectedComponent.prototype = new Graph();

ConnectedComponent.prototype.constructor = ConnectedComponent;

ConnectedComponent.superclass = Graph.prototype;



ConnectedComponent.prototype.addControls = function()

{		

	this.startButton = addControlToAlgorithmBar("Button", "Run Connected Component");

	this.startButton.onclick = this.startCallback.bind(this);

	ConnectedComponent.superclass.addControls.call(this, false);

}	





ConnectedComponent.prototype.init = function(am, w, h)

{

	this.showEdgeCosts = false;

	ConnectedComponent.superclass.init.call(this, am, w, h, true, false); // TODO: add no edge label flag to this?

	// Setup called in base class init function

}



		

ConnectedComponent.prototype.setup = function() 

{

	ConnectedComponent.superclass.setup.call(this); 

	this.animationManager.setAllLayers([0, this.currentLayer]);

	this.messageID = new Array();

	this.commands = new Array();

	this.animationManager.clearHistory();

	this.messageID = new Array();

	this.commands = new Array();

	

	this.highlightCircleL = this.nextIndex++;

	this.highlightCircleAL = this.nextIndex++;

	this.highlightCircleAM= this.nextIndex++

	this.initialIndex = this.nextIndex;

	

	this.old_adj_matrix = new Array(this.size);

	this.old_adj_list_list = new Array(this.size);

	this.old_adj_list_index = new Array(this.size);

	this.old_adj_list_edges = new Array(this.size);

	for (var i = 0; i < this.size; i++)

	{

		this.old_adj_matrix[i] = new Array(this.size);

		this.old_adj_list_index[i] = this.adj_list_index[i];

		this.old_adj_list_list[i] = this.adj_list_list[i];

		this.old_adj_list_edges[i] = new Array(this.size);

		for (var j = 0; j < this.size; j++)

		{

			this.old_adj_matrix[i][j] = this.adj_matrix[i][j];	

			if (this.adj_matrix[i][j] > 0)

			{

				this.old_adj_list_edges[i][j] = this.adj_list_edges[i][j];

			}	

			

		}

	}

}

		

		

ConnectedComponent.prototype.startCallback = function(event)

{

			this.implementAction(this.doCC.bind(this),"");

}





ConnectedComponent.prototype.transpose = function()

{

	for (var i = 0; i < this.size; i++)

	{

		for (var j = i+1; j <this.size; j++)

		{

			var tmp = this.adj_matrix[i][j];

			this.adj_matrix[i][j] = this.adj_matrix[j][i];

			this.adj_matrix[j][i] = tmp;

		}

	}

}



ConnectedComponent.prototype.doCC = function(ignored)

{

		

	this.visited = new Array(this.size);

	this.commands = new Array();

	var i;

	if (this.messageID != null)

	{

		for (i = 0; i < this.messageID.length; i++)

		{

			this.cmd("Delete", this.messageID[i], 1);

		}

	}

	this.rebuildEdges();

	this.messageID = new Array();

	

	this.d_timesID_L = new Array(this.size);

	this.f_timesID_L = new Array(this.size);

	this.d_timesID_AL = new Array(this.size);

	this.f_timesID_AL = new Array(this.size);

	this.d_times = new Array(this.size);

	this.f_times = new Array(this.size);

	this.currentTime = 1

	for (i = 0; i < this.size; i++)

	{

		this.d_timesID_L[i] = this.nextIndex++;

		this.f_timesID_L[i] = this.nextIndex++;

		this.d_timesID_AL[i] = this.nextIndex++;

		this.f_timesID_AL[i] = this.nextIndex++;

	}

	

	this.messageY = 30;

	var vertex;

	for (vertex = 0; vertex < this.size; vertex++)

	{

		if (!this.visited[vertex])

		{

			this.cmd("CreateHighlightCircle", this.highlightCircleL, HIGHLIGHT_CIRCLE_COLOR, this.x_pos_logical[vertex], this.y_pos_logical[vertex]);

			this.cmd("SetLayer", this.highlightCircleL, 1);

			this.cmd("CreateHighlightCircle", this.highlightCircleAL, HIGHLIGHT_CIRCLE_COLOR,this.adj_list_x_start - this.adj_list_width, this.adj_list_y_start + vertex*this.adj_list_height);

			this.cmd("SetLayer", this.highlightCircleAL, 2);

			

			this.cmd("CreateHighlightCircle", this.highlightCircleAM, HIGHLIGHT_CIRCLE_COLOR,this.adj_matrix_x_start - this.adj_matrix_width, this.adj_matrix_y_start + vertex*this.adj_matrix_height);

			this.cmd("SetLayer", this.highlightCircleAM, 3);

			

			if (vertex > 0)

			{

				var breakID = this.nextIndex++;

				this.messageID.push(breakID);

				this.cmd("CreateRectangle", breakID, "", 200, 0, 10, this.messageY,"left","bottom");

				this.messageY = this.messageY + 20;			

			}

			this.dfsVisit(vertex, 10, false);

			this.cmd("Delete", this.highlightCircleL, 2);

			this.cmd("Delete", this.highlightCircleAL, 3);

			this.cmd("Delete", this.highlightCircleAM, 4);

		}

	}

	this.clearEdges();

	this.removeAdjList();

	this.transpose();

	this.buildEdges();

	this.buildAdjList();

	this.currentTime = 1

	

	for (i=0; i < this.size; i++)

	{

		for (j = 0; j < this.size; j++)

		{

			if (this.adj_matrix[i][j] >= 0)

			{

				this.cmd("SetText", this.adj_matrixID[i][j], "1");

			}

			else

			{

				this.cmd("SetText", this.adj_matrixID[i][j], "");						

			}

		}

	}

	

	

	for (vertex = 0; vertex < this.size; vertex++)

	{

		this.visited[vertex] = false;

		this.cmd("Delete", this.d_timesID_L[vertex], 5);

		this.cmd("Delete", this.f_timesID_L[vertex], 6);

		this.cmd("Delete", this.d_timesID_AL[vertex], 7);

		this.cmd("Delete", this.f_timesID_AL[vertex], 8);

	}

	

	var sortedVertex = new Array(this.size);

	var sortedID = new Array(this.size);

	for (vertex = 0; vertex < this.size; vertex++)

	{

		sortedVertex[vertex] = vertex;

		sortedID[vertex] = this.nextIndex++;

		this.cmd("CreateLabel", sortedID[vertex], "Vertex: " + String(vertex)+ " f = " + String(this.f_times[vertex]), 400, 110 + vertex*20, 0);

	}

	this.cmd("Step");

	

	for (i = 1; i < this.size; i++)

	{

		var j = i;

		var tmpTime = this.f_times[i];

		var tmpIndex = sortedVertex[i];

		var tmpID = sortedID[i];

		while (j > 0 && this.f_times[j-1] < tmpTime)

		{

			this.f_times[j] = this.f_times[j-1];

			sortedVertex[j] = sortedVertex[j-1];

			sortedID[j] = sortedID[j-1];

			j--;

		}

		this.f_times[j] = tmpTime;

		sortedVertex[j] = tmpIndex;

		sortedID[j] = tmpID;

	}

	for (vertex = 0; vertex < this.size; vertex++)

	{

		this.cmd("Move", sortedID[vertex], 400, 110 + vertex*20);

	}

	

	for (i = 0; i < this.messageID.length; i++)

	{

		this.cmd("Delete", this.messageID[i], 9);

	}

	

	this.messageID = new Array();

	this.messageY = 30;

	

	var ccNum = 1;

	for (i = 0; i < this.size; i++)

	{

		vertex = sortedVertex[i];

		if (!this.visited[vertex])

		{

			

			var breakID1 = this.nextIndex++;

			this.messageID.push(breakID1);

			var breakID2 = this.nextIndex++;

			this.messageID.push(breakID2);

			this.cmd("CreateRectangle", breakID1, "", 200, 0, 50, this.messageY + 8,"left","center");

			this.cmd("CreateLabel", breakID2, "CC #" + String(ccNum++), 10, this.messageY, 0);

			this.cmd("SetForegroundColor",breakID1 ,"#004B00");

			this.cmd("SetForegroundColor",breakID2 ,"#004B00");

			this.messageY = this.messageY + 20;			

			

			this.cmd("CreateHighlightCircle", this.highlightCircleL, HIGHLIGHT_CIRCLE_COLOR, this.x_pos_logical[vertex], this.y_pos_logical[vertex]);

			this.cmd("SetLayer", this.highlightCircleL, 1);

			this.cmd("CreateHighlightCircle", this.highlightCircleAL, HIGHLIGHT_CIRCLE_COLOR,this.adj_list_x_start - this.adj_list_width, this.adj_list_y_start + vertex*this.adj_list_height);

			this.cmd("SetLayer", this.highlightCircleAL, 2);

			

			this.cmd("CreateHighlightCircle", this.highlightCircleAM, HIGHLIGHT_CIRCLE_COLOR,this.adj_matrix_x_start - this.adj_matrix_width, this.adj_matrix_y_start + vertex*this.adj_matrix_height);

			this.cmd("SetLayer", this.highlightCircleAM, 3);



			

			

			

			

			this.dfsVisit(vertex, 75, true);

			this.cmd("Delete", this.highlightCircleL, 10);

			this.cmd("Delete", this.highlightCircleAL, 11);

			this.cmd("Delete", this.highlightCircleAM, 12);

		}

		this.cmd("Delete", sortedID[i], 13);

	}

	

	for (vertex = 0; vertex < this.size; vertex++)

	{

		this.cmd("Delete", this.d_timesID_L[vertex], 14);

		this.cmd("Delete", this.f_timesID_L[vertex], 15);

		this.cmd("Delete", this.d_timesID_AL[vertex], 16);

		this.cmd("Delete", this.f_timesID_AL[vertex], 17);

	}

	

	return this.commands

	

}





ConnectedComponent.prototype.setup_large = function()

{

	this.d_x_pos = D_X_POS_LARGE;

	this.d_y_pos = D_Y_POS_LARGE;

	this.f_x_pos = F_X_POS_LARGE;

	this.f_y_pos = F_Y_POS_LARGE;

	

	ConnectedComponent.superclass.setup_large.call(this); 

}		

ConnectedComponent.prototype.setup_small = function()

{

	

	this.d_x_pos = D_X_POS_SMALL;

	this.d_y_pos = D_Y_POS_SMALL;

	this.f_x_pos = F_X_POS_SMALL;

	this.f_y_pos = F_Y_POS_SMALL;



	ConnectedComponent.superclass.setup_small.call(this); 

}



ConnectedComponent.prototype.dfsVisit = function(startVertex, messageX, printCCNum)

{

	if (printCCNum)

	{

		var ccNumberID = this.nextIndex++;

		this.messageID.push(ccNumberID);

		this.cmd("CreateLabel",ccNumberID, "Vertex " + String(startVertex), 5, this.messageY, 0);

		this.cmd("SetForegroundColor", ccNumberID, "#0000FF");

	}

	var nextMessage = this.nextIndex++;

	this.messageID.push(nextMessage);

	this.cmd("CreateLabel",nextMessage, "DFS(" + String(startVertex) + ")", messageX, this.messageY, 0);

	

	this.messageY = this.messageY + 20;

	if (!this.visited[startVertex])

	{

		this.d_times[startVertex] = this.currentTime++;

		this.cmd("CreateLabel", this.d_timesID_L[startVertex], "d = " + String(this.d_times[startVertex]), this.d_x_pos[startVertex], this.d_y_pos[startVertex]);				

		this.cmd("CreateLabel", this.d_timesID_AL[startVertex], "d = " + String(this.d_times[startVertex]), this.adj_list_x_start - 2*this.adj_list_width, this.adj_list_y_start + startVertex*this.adj_list_height - 1/4*this.adj_list_height);

		this.cmd("SetLayer", this.d_timesID_L[startVertex], 1);

		this.cmd("SetLayer", this.d_timesID_AL[startVertex], 2);

		

		this.visited[startVertex] = true;

		this.cmd("Step");

		for (var neighbor = 0; neighbor < this.size; neighbor++)

		{

			if (this.adj_matrix[startVertex][neighbor] > 0)

			{

				this.highlightEdge(startVertex, neighbor, 1);

				if (this.visited[neighbor])

				{

					nextMessage = this.nextIndex;

					this.cmd("CreateLabel", nextMessage, "Vertex " + String(neighbor) + " already this.visited.", messageX, this.messageY, 0);

				}

				this.cmd("Step");

				this.highlightEdge(startVertex, neighbor, 0);

				if (this.visited[neighbor])

				{

					this.cmd("Delete", nextMessage, "DNM");

				}

				

				if (!this.visited[neighbor])

				{

					this.cmd("Disconnect", this.circleID[startVertex], this.circleID[neighbor]);

					this.cmd("Connect", this.circleID[startVertex], this.circleID[neighbor], DFS_TREE_COLOR, this.curve[startVertex][neighbor], 1, "");

					this.cmd("Move", this.highlightCircleL, this.x_pos_logical[neighbor], this.y_pos_logical[neighbor]);

					this.cmd("Move", this.highlightCircleAL, this.adj_list_x_start - this.adj_list_width, this.adj_list_y_start + neighbor*this.adj_list_height);

					this.cmd("Move", this.highlightCircleAM, this.adj_matrix_x_start - this.adj_matrix_width, this.adj_matrix_y_start + neighbor*this.adj_matrix_height);

					

					this.cmd("Step");

					this.dfsVisit(neighbor, messageX + 10, printCCNum);							

					nextMessage = this.nextIndex;

					this.cmd("CreateLabel", nextMessage, "Returning from recursive call: DFS(" + String(neighbor) + ")", messageX + 20, this.messageY, 0);

					

					this.cmd("Move", this.highlightCircleAL, this.adj_list_x_start - this.adj_list_width, this.adj_list_y_start + startVertex*this.adj_list_height);

					this.cmd("Move", this.highlightCircleL, this.x_pos_logical[startVertex], this.y_pos_logical[startVertex]);

					this.cmd("Move", this.highlightCircleAM, this.adj_matrix_x_start - this.adj_matrix_width, this.adj_matrix_y_start + startVertex*this.adj_matrix_height);

					this.cmd("Step");

					this.cmd("Delete", nextMessage, 18);

				}

				this.cmd("Step");

				

				

				

			}

			

		}

		this.f_times[startVertex] = this.currentTime++;

		this.cmd("CreateLabel", this.f_timesID_L[startVertex],"f = " + String(this.f_times[startVertex]), this.f_x_pos[startVertex], this.f_y_pos[startVertex]);

		this.cmd("CreateLabel", this.f_timesID_AL[startVertex], "f = " + String(this.f_times[startVertex]), this.adj_list_x_start - 2*this.adj_list_width, this.adj_list_y_start + startVertex*this.adj_list_height + 1/4*this.adj_list_height);

		

		this.cmd("SetLayer", this.f_timesID_L[startVertex], 1);

		this.cmd("SetLayer", this.f_timesID_AL[startVertex], 2);

		

		

		

	}

	

}





ConnectedComponent.prototype.reset = function()

{

	// TODO: Fix undo messing with setup vars.

	this.messageID = new Array();

	this.nextIndex = this.initialIndex;

	for (var i = 0; i < this.size; i++)

	{

		this.adj_list_list[i] = this.old_adj_list_list[i];

		this.adj_list_index[i] = this.old_adj_list_index[i];



		for (var j = 0; j < this.size; j++)

		{

			this.adj_matrix[i][j] = this.old_adj_matrix[i][j];	

			if (this.adj_matrix[i][j] > 0)

			{

				this.adj_list_edges[i][j] = this.old_adj_list_edges[i][j];

			}	

		}

	}



}







ConnectedComponent.prototype.enableUI = function(event)

{			

	this.startButton.disabled = false;

	

	ConnectedComponent.superclass.enableUI.call(this,event);

}

ConnectedComponent.prototype.disableUI = function(event)

{

	

	this.startButton.disabled = true;

	

	ConnectedComponent.superclass.disableUI.call(this, event);

}





var currentAlg;



function init()

{

	var animManag = initCanvas();

	currentAlg = new ConnectedComponent(animManag, canvas.width, canvas.height);

}
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