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var fct = {
list : [],
couleur : "rgba(193,255,0,1)",
colorsList : ["rgba(255,0,0,1)","rgba(255,128,0,1)","rgba(255,255,0,1)","rgba(128,255,0,1)","rgba(0,255,0,1)","rgba(0,255,128,1)","rgba(0,255,255,1)","rgba(0,128,255,1)","rgba(0,0,255,1)","rgba(128,0,255,1)","rgba(255,0,255,1)","rgba(255,0,128,1)"],
interdit : [";", "interdit", "'", '"', "eval", "new", "uniboard", "sankore", "=", "document", "window", "alert", "fct", "affichage", "colorPicker", "languages"],
functionFromObject: function(f){
if(f.type == "cartesian"){
return new CartesianFunction().set(f);
}
else if(f.type == "implicit"){
return new ImplicitFunction().set(f);
}
else if(f.type == "polar"){
return new PolarFunction().set(f);
}
else if(f.type == "parametric"){
return new ParametricFunction().set(f);
}
console.err("Unknown function:", f);
},
addCartesian : function(txt){
var txtFct = this.remplacer(this.verifier(txt));
if(txtFct == ""){
return false;
}
var f = new CartesianFunction(txtFct);
this.add(f, true);
return true;
},
addImplicit : function(txtFct){
var equalPos = txtFct.indexOf("=");
if(equalPos >= 0){
txtFct = txtFct.replace("=", "-(") + ")";
}
txtFct = this.remplacer(this.verifier(txtFct));
if(txtFct == ""){
return false;
}
var f = new ImplicitFunction(txtFct);
this.add(f, true);
return true;
},
addPolar : function(txt){
var txtFct = this.remplacer(this.verifier(txt));
if(txtFct == ""){
return false;
}
var f = new PolarFunction(txtFct);
this.add(f, true);
return true;
},
addParametric : function(txtX, txtY){
var fctX = this.remplacer(this.verifier(txtX));
var fctY = this.remplacer(this.verifier(txtY));
if(fctX == "" || fctY == ""){
return false;
}
var f = new ParametricFunction(fctX, fctY);
this.add(f, true);
return true;
},
add : function(f, useRandomColor){
this.list.unshift(f);
if(useRandomColor){
f.couleur = this.colorsList[alea(0,this.colorsList.length-1)];
}
historique.ajouter(f);
this.updateList();
editeur.editer(0);
},
ajouter : function(){
var type = document.getElementById("functionType").value;
if(type == "cartesian"){
var input = document.getElementById("input");
if(this.addCartesian(input.value)){
input.value = "";
}
}
else if(type == "implicit"){
var input = document.getElementById("implicitInput");
if(this.addImplicit(input.value)){
input.value = "";
}
}
else if(type == "polar"){
var input = document.getElementById("polarInput");
if(this.addPolar(input.value)){
input.value = "";
}
}
else if(type == "parametric"){
var inputX = document.getElementById("parametricInputX");
var inputY = document.getElementById("parametricInputY");
if(this.addParametric(inputX.value, inputY.value)){
inputX.value = "";
inputY.value = "";
}
}
},
changeType : function(type){
document.getElementById("cartesianDiv").style.display = "none";
document.getElementById("implicitDiv").style.display = "none";
document.getElementById("polarDiv").style.display = "none";
document.getElementById("parametricDiv").style.display = "none";
document.getElementById(type+"Div").style.display = "initial";
},
enlever : function(id){
this.list.splice(id, 1);
this.updateList();
},
dupliquer : function(id){
var newFct = this.functionFromObject(this.list[id].get());
newFct.couleur = this.colorsList[alea(0,this.colorsList.length-1)];
this.list.splice(id+1, 0, newFct);
this.updateList();
},
etudier : function(id){
etude.etudier(this.list[id].fct);
afficherMenu("menuEtude");
},
updateList : function(){
var texteFctSupp = "";
for(var i=0; i<this.list.length; i++){
var className = "spanFonction";
if(i == editeur.idFct){
className += " spanFonctionSelect";
}
texteFctSupp += '<div class="'+className+'" onclick="editeur.editer('+i+')" style="text-shadow: 0px 0px 3px '+this.list[i].couleur+'">'+this.list[i].fct+'</div>';
}
document.getElementById("fonctionsSupp").innerHTML = texteFctSupp;
affichage.dessiner();
saveOptions();
},
verifier : function(txtFonction){
for(var i=0; i<this.interdit.length; i++){
var condition = "";
for(var k=0; k<this.interdit[i].length; k++){
if(k==0){
condition = condition + "txtFonction.charAt(j) == this.interdit[i].charAt(0)";
}
else{
condition = condition + "&& txtFonction.charAt(j+"+k+") == this.interdit[i].charAt("+k+")";
}
}
for(var j=0; j<txtFonction.length; j++){
if(eval(condition)){
document.getElementById("spanFctInterdite").innerHTML = this.interdit[i];
afficherMenu("fctInterdite");
return 0;
}
}
}
return txtFonction;
},
remplacer : function(txtFonction){
// Remplace a^b par pow(a, b)
var start = 0;
var end = 0;
var pos1, pos2;
while(true){
// start = end;
end = txtFonction.indexOf("^",0);
if(end != -1){
pos1 = txtFonction.getLastIndexOf(["+", "-", "*", "/", "%", "(", ","], start, end);
if(pos1 == -1){
pos1 = start-1;
}
pos2 = txtFonction.getIndexOf(["+", "-", "*", "/", "%", "^"], end+1);
if(pos2 == -1){
pos2 = txtFonction.length;
}
txtFonction = txtFonction.substring(0,pos1+1)+"pow("+txtFonction.substring(pos1+1,end)+","+txtFonction.substring(end+1,pos2)+")"+txtFonction.substring(pos2,txtFonction.length);
// alert(txtFonction)
}
else{
break;
}
}
return txtFonction;
},
get : function(){
var list = [];
for(var i=0; i<this.list.length; i++){
list.push(this.list[i].get());
}
return {list: list};
},
set: function(obj){
var list = obj.list;
for(var i=0; i<list.length; i++){
this.list.push(fct.functionFromObject(list[i]));
}
this.updateList();
if(this.list.length > 0){
editeur.editer(0);
}
}
};
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