Starting Sequences!
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@ -41,7 +41,7 @@ Item {
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anchors.top: parent.top
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verticalAlignment: TextInput.AlignVCenter
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color: sysPalette.windowText
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text: " "+ control.label +": "
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text: control.label +": "
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}
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ComboBox {
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@ -140,7 +140,7 @@ ApplicationWindow {
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function loadDiagram(filename) {
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var data = JSON.parse(Helper.load(filename))
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if(Object.keys(data).indexOf("type") != -1 && data["type"] == "logplotv1") {
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if("type" in Object.keys(data) && data["type"] == "logplotv1") {
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settings.xzoom = data["xzoom"]
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settings.yzoom = data["yzoom"]
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settings.xmin = data["xmin"]
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@ -263,13 +263,22 @@ ListView {
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width: dlgProperties.width
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property string label: Utils.camelCase2readable(modelData[0])
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Text {
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id: customPropComment
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height: 30
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width: parent.width
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visible: modelData[0].startsWith('comment')
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text: modelData[1]
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color: sysPalette.windowText
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}
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TextSetting {
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id: customPropText
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height: 30
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width: parent.width
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label: parent.label
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isDouble: modelData[1] == 'number'
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visible: ['Expression', 'Domain', 'string', 'number'].indexOf(modelData[1]) >= 0
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visible: modelData[1] in ['Expression', 'Domain', 'string', 'number']
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defValue: visible ? {
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'Expression': () => Utils.simplifyExpression(objEditor.obj[modelData[0]].toEditableString()),
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'Domain': () => objEditor.obj[modelData[0]].toString(),
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@ -286,9 +295,6 @@ ListView {
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Objects.currentObjects[objEditor.objType][objEditor.objIndex].update()
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objectListList.update()
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}
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Component.onCompleted: {
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//console.log(modelData[0], objEditor.obj[modelData[0]],modelData[1], defValue)
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}
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}
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CheckBox {
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@ -310,7 +316,7 @@ ListView {
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width: dlgProperties.width
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label: parent.label
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// True to select an object of type, false for enums.
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property bool selectObjMode: (typeof modelData[1] == "string" && Object.keys(Objects.types).indexOf(modelData[1]) >= 0)
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property bool selectObjMode: (typeof modelData[1] == "string" && modelData[1] in Object.keys(Objects.types))
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model: visible ?
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(selectObjMode ? Objects.getObjectsName(modelData[1]).concat(['+ Create new ' + modelData[1]]) : modelData[1])
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: []
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@ -37,7 +37,7 @@ Item {
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anchors.top: parent.top
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verticalAlignment: TextInput.AlignVCenter
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color: sysPalette.windowText
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text: " "+ control.label +": "
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text: control.label +": "
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}
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@ -23,13 +23,17 @@
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const parser = new ExprEval.Parser()
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var u = {1: 1, 2: 2, 3: 3}
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console.log(parser.parse('u[n]+u[n+1]+u[n+2]').simplify().evaluate({"u": u, 'n': 1}))
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var evalVariables = { // Variables not provided by expr-eval.js, needs to be provided manualy
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"pi": Math.PI,
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"π": Math.PI,
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"inf": Infinity,
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"Infinity": Infinity,
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"∞": Infinity,
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"e": Math.E
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"e": Math.E,
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"E": Math.E
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}
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class Expression {
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@ -64,10 +68,7 @@ class Expression {
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}
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toString(forceSign=false) {
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var str = this.calc.toString()
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if(str[0] == "(") str = str.substr(1)
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if(str[str.length - 1] == ")") str = str.substr(0, str.length - 1)
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str = Utils.makeExpressionReadable(str)
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var str = Utils.makeExpressionReadable(this.calc.toString())
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if(str[0] != '-' && forceSign) str = '+' + str
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return str
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}
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@ -77,6 +78,34 @@ function executeExpression(expr){
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return (new Expression(expr.toString())).execute()
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}
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class Sequence extends Expression {
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constructor(name, baseValues = {}, expr) {
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console.log('Expression', expr)
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super(expr)
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this.name = name
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this.baseValues = baseValues
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}
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isConstant() {
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return this.expr.indexOf("n") == -1
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}
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execute(n = 0) {
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if(this.cached) return this.cachedValue
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if(n in this.baseValues) return this.baseValues[n]
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var vars = Object.assign({'n': n-1}, evalVariables)
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vars[this.name] = this.baseValues
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var un = this.calc.evaluate(vars)
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this.baseValues[n] = un
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return un
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}
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}
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var test = new Sequence('u', {0: 0}, '3*u[n]+3')
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console.log(test)
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for(var i=0; i<20; i++)
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console.log('u' + Utils.textsub(i) + ' = ' + test.execute(i))
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// Domains
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class Domain {
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constructor() {}
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@ -203,6 +203,7 @@ class Function extends ExecutableObject {
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'expression': 'Expression',
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'inDomain': 'Domain',
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'outDomain': 'Domain',
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'comment1': 'Ex: R+* (ℝ⁺*), N* (ℕ*), Z-* (ℤ⁻*), ]0;1[, {3;4;5}',
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'labelPosition': ['above', 'below'],
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'displayMode': ['application', 'function'],
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'labelX': 'number'
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@ -280,8 +281,6 @@ class Function extends ExecutableObject {
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var pxprecision = 2
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var previousX = canvas.px2x(0)
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var previousY;
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var draw = function(currentX) {
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}
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if(inDomain instanceof MathLib.SpecialDomain && inDomain.moveSupported) {
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previousX = inDomain.previous(previousX)
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if(previousX === null) previousX = inDomain.next(canvas.px2x(0))
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@ -924,6 +923,8 @@ class CursorX extends DrawableObject {
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}
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}
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const types = {
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'Point': Point,
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'Function': Function,
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@ -207,8 +207,10 @@ function makeExpressionReadable(str) {
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[/ \^ /g, '^'],
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[/\^\(([^\^]+)\)/g, function(match, p1) { return textsup(p1) }],
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[/\^([^ ]+)/g, function(match, p1) { return textsup(p1) }],
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[/_\(([^_]+)\)/g, function(match, p1) { return textsub(p1) }],
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[/_([^ ]+)/g, function(match, p1) { return textsub(p1) }],
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[/(\d|\))×/g, '$1'],
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[/×(\d|\()/g, '$1'],
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//[/×(\d|\()/g, '$1'],
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[/\(([^)(+.\/-]+)\)/g, "$1"],
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]
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@ -258,8 +260,10 @@ function parseName(str, removeUnallowed = true) {
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[/([^a-z]|^)gps(i)?([^a-z]|$)/g, '$1Ψ$3'],
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[/([^a-z]|^)gom(ega)?([^a-z]|$)/g, '$1Ω$3'],
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// Underscores
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[/_\(([^\^]+)\)/g, function(match, p1) { return textsub(p1) }],
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[/_\(([^_]+)\)/g, function(match, p1) { return textsub(p1) }],
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[/_([^ ]+)/g, function(match, p1) { return textsub(p1) }],
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// Array elements
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[/\[([^\]\[]+)\]/g, function(match, p1) { return textsub(p1) }],
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// Removing
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[/[xπℝℕ\\∪∩\]\[ ()^/÷*×+=\d-]/g , ''],
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]
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@ -271,7 +275,6 @@ function parseName(str, removeUnallowed = true) {
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return str
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}
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String.prototype.toLatinUppercase = function() {
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return this.replace(/[a-z]/g, function(match){return match.toUpperCase()})
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}
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