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 David Galles ``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 David Galles 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 RecFact(am, w, h)
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{
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this.init(am, w, h);
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}
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RecFact.prototype = new Recursive();
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RecFact.prototype.constructor = RecFact;
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RecFact.superclass = Recursive.prototype;
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RecFact.MAX_VALUE = 20;
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RecFact.ACTIVATION_FIELDS = ["n ", "subValue ", "returnValue "];
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RecFact.CODE = [["def ","factorial(n)",":"],
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[" if ","(n <= 1): "],
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[" return 1"],
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[" else:"],
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[" subSolution = ", "factorial(n - 1)"],
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[" solution = ", "subSolution * n"],
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[" return ", "solution"]];
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RecFact.RECURSIVE_DELTA_Y = RecFact.ACTIVATION_FIELDS.length * Recursive.ACTIVATION_RECORD_HEIGHT;
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RecFact.ACTIVATION_RECORT_START_X = 330;
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RecFact.ACTIVATION_RECORT_START_Y = 20;
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RecFact.prototype.init = function(am, w, h)
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{
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RecFact.superclass.init.call(this, am, w, h);
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this.nextIndex = 0;
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this.addControls();
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this.code = RecFact.CODE;
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this.addCodeToCanvas(this.code);
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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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this.initialIndex = this.nextIndex;
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this.oldIDs = [];
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this.commands = [];
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}
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RecFact.prototype.addControls = function()
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{
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this.controls = [];
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this.factorialField = addControlToAlgorithmBar("Text", "");
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this.factorialField.onkeydown = this.returnSubmit(this.factorialField, this.factorialCallback.bind(this), 2, true);
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this.controls.push(this.factorialField);
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this.factorialButton = addControlToAlgorithmBar("Button", "Factorial");
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this.factorialButton.onclick = this.factorialCallback.bind(this);
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this.controls.push(this.factorialButton);
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}
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RecFact.prototype.factorialCallback = function(event)
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{
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var factValue;
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if (this.factorialField.value != "")
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{
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var factValue = Math.min(parseInt(this.factorialField.value), RecFact.MAX_VALUE);
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this.factorialField.value = String(factValue);
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this.implementAction(this.doFactorial.bind(this),factValue);
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}
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}
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RecFact.prototype.doFactorial = function(value)
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{
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this.commands = [];
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this.clearOldIDs();
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this.currentY = RecFact.ACTIVATION_RECORT_START_Y;
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this.currentX = RecFact.ACTIVATION_RECORT_START_X;
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var final = this.factorial(value);
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var resultID = this.nextIndex++;
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this.oldIDs.push(resultID);
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this.cmd("CreateLabel", resultID, "factorial(" + String(value) + ") = " + String(final),
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Recursive.CODE_START_X, Recursive.CODE_START_Y + (this.code.length + 1) * Recursive.CODE_LINE_HEIGHT, 0);
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//this.cmd("SetText", functionCallID, "factorial(" + String(value) + ") = " + String(final));
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return this.commands;
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}
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RecFact.prototype.factorial = function(value)
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{
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var activationRec = this.createActivation("factorial ", RecFact.ACTIVATION_FIELDS, this.currentX, this.currentY);
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this.cmd("SetText", activationRec.fieldIDs[0], value);
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// this.cmd("CreateLabel", ID, "", 10, this.currentY, 0);
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var oldX = this.currentX;
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var oldY = this.currentY;
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this.currentY += RecFact.RECURSIVE_DELTA_Y;
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if (this.currentY + Recursive.RECURSIVE_DELTA_Y > this.canvasHeight)
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{
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this.currentY = RecFact.ACTIVATION_RECORT_START_Y;
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this.currentX += Recursive.ACTIVATION_RECORD_SPACING;
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}
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this.cmd("SetForegroundColor", this.codeID[0][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[0][1], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[1][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[1][1], Recursive.CODE_STANDARD_COLOR);
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if (value > 1)
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{
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this.cmd("SetForegroundColor", this.codeID[4][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[4][1], Recursive.CODE_STANDARD_COLOR);
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var firstValue = this.factorial(value-1);
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this.cmd("SetForegroundColor", this.codeID[4][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetForegroundColor", this.codeID[4][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetText", activationRec.fieldIDs[1], firstValue);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[4][0], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[4][1], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[5][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetForegroundColor", this.codeID[5][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetText", activationRec.fieldIDs[2], firstValue * value);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[5][0], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[5][1], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[6][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetForegroundColor", this.codeID[6][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.deleteActivation(activationRec);
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this.currentY = oldY;
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this.currentX = oldX;
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this.cmd("CreateLabel", this.nextIndex, "Return Value = " + String(firstValue * value), oldX, oldY);
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this.cmd("SetForegroundColor", this.nextIndex, Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[6][0], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[6][1], Recursive.CODE_STANDARD_COLOR);
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this.cmd("Delete",this.nextIndex);
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// this.cmd("SetForegroundColor", this.codeID[4][3], Recursive.CODE_HIGHLIGHT_COLOR);
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// this.cmd("Step");
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return firstValue *value;
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}
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else
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{
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this.cmd("SetForegroundColor", this.codeID[2][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[2][0], Recursive.CODE_STANDARD_COLOR);
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this.currentY = oldY;
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this.currentX = oldX;
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this.deleteActivation(activationRec);
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this.cmd("CreateLabel", this.nextIndex, "Return Value = 1", oldX, oldY);
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this.cmd("SetForegroundColor", this.nextIndex, Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("Delete",this.nextIndex);
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return 1;
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}
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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 RecFact(animManag, canvas.width, canvas.height);
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}
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