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/*
* 26/11/2006 - 17:02
*
* GraphMonkey - mono based graphing calculator
* Copyright (C) 2006 Lounis Bellabes
* nolius@users.sourceforge.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
using System;
public class operation : object{
public string phrase;
public string operateur;
public operation droite;
public operation gauche;
public operation(string phrase) {
this.phrase=phrase;
}
public void decouper(){
//search a + (the more at rigth) not in Bracket
int position_plus=this.phrase.LastIndexOf("+");
bool trouver_bon_plus = false;
while (position_plus != -1 && trouver_bon_plus==false ){
if (this.compte_jusqua("(", position_plus) != this.compte_jusqua(")", position_plus) ){
position_plus = this.phrase.LastIndexOf("+", position_plus-1, position_plus);
}
else{
trouver_bon_plus = true;
}
}
if (trouver_bon_plus == false){
position_plus = -1;
}
//search a - (the more at rigth) not in Bracket
int position_moin=this.phrase.LastIndexOf("-");
bool trouver_bon_moin = false;
while (position_moin != -1 && trouver_bon_moin==false ){
if (this.compte_jusqua("(", position_moin) != this.compte_jusqua(")", position_moin) ){
position_moin = this.phrase.LastIndexOf("-", position_moin-1, position_moin);
}
else{
trouver_bon_moin = true;
}
}
if (trouver_bon_moin == false){
position_moin = -1;
}
// priority for + and -
// initially a +
if ( (position_plus!=-1 && position_moin==-1) || (position_plus!=-1 && position_moin!=-1 && position_plus>position_moin) ){
this.operateur = "+";
string phrase_gauche=this.phrase;
phrase_gauche = phrase_gauche.Remove(position_plus,phrase_gauche.Length-position_plus);
this.gauche = new operation(phrase_gauche);
string phrase_droite=this.phrase;
phrase_droite = phrase_droite.Remove(0,position_plus+1);
this.droite = new operation(phrase_droite);
}
// initially a -
else if ( (position_plus==-1 && position_moin!=-1) || (position_plus!=-1 && position_moin!=-1 && position_moin>position_plus) ){
this.operateur = "-";
string phrase_gauche=this.phrase;
phrase_gauche = phrase_gauche.Remove(position_moin,phrase_gauche.Length-position_moin);
this.gauche = new operation(phrase_gauche);
string phrase_droite=this.phrase;
phrase_droite = phrase_droite.Remove(0,position_moin+1);
this.droite = new operation(phrase_droite);
}
// now * et /
else {
//search a * (the more at rigth) not in Bracket
int position_multiplier=this.phrase.LastIndexOf("*");
bool trouver_bon_multiplier = false;
while (position_multiplier != -1 && trouver_bon_multiplier==false ){
if (this.compte_jusqua("(", position_multiplier) != this.compte_jusqua(")", position_multiplier) ){
position_multiplier = this.phrase.LastIndexOf("*", position_multiplier-1, position_multiplier);
}
else{
trouver_bon_multiplier = true;
}
}
if (trouver_bon_multiplier == false){
position_multiplier= -1;
}
//search a / (the more at rigth) not in Bracket
int position_diviser=this.phrase.LastIndexOf("/");
bool trouver_bon_diviser = false;
while (position_diviser != -1 && trouver_bon_diviser==false ){
if (this.compte_jusqua("(", position_diviser) != this.compte_jusqua(")", position_diviser) ){
position_diviser = this.phrase.LastIndexOf("/", position_diviser-1, position_diviser);
}
else{
trouver_bon_diviser = true;
}
}
if (trouver_bon_diviser == false){
position_diviser= -1;
}
// initially a *
if ( (position_multiplier!=-1 && position_diviser==-1) || (position_multiplier!=-1 && position_diviser!=-1 && position_multiplier>position_diviser) ){ // initially a *
this.operateur = "*";
string phrase_gauche=this.phrase;
phrase_gauche = phrase_gauche.Remove(position_multiplier,phrase_gauche.Length-position_multiplier);
this.gauche = new operation(phrase_gauche);
string phrase_droite=this.phrase;
phrase_droite = phrase_droite.Remove(0,position_multiplier+1);
this.droite = new operation(phrase_droite);
}
// initially a /
else if ( (position_multiplier==-1 && position_diviser!=-1) || (position_multiplier!=-1 && position_diviser!=-1 && position_diviser>position_multiplier) ){ // initially a /
this.operateur = "/";
string phrase_gauche=this.phrase;
phrase_gauche = phrase_gauche.Remove(position_diviser,phrase_gauche.Length-position_diviser);
this.gauche = new operation(phrase_gauche);
string phrase_droite=this.phrase;
phrase_droite = phrase_droite.Remove(0,position_diviser+1);
this.droite = new operation(phrase_droite);
}
// now ^
else{
//search a ^ (the more at rigth) not in Bracket
int position_puissance=this.phrase.IndexOf("^");
bool trouver_bon_puissance = false;
while (position_puissance != -1 && trouver_bon_puissance==false ){
if (this.compte_jusqua("(", position_puissance) != this.compte_jusqua(")", position_puissance) ){
position_puissance = this.phrase.IndexOf("^", position_puissance+1);
}
else{
trouver_bon_puissance = true;
}
}
if (trouver_bon_puissance == false){
position_puissance= -1;
}
if ( (position_puissance!=-1) ){ // there is a ^
this.operateur = "^";
string phrase_gauche=this.phrase;
phrase_gauche = phrase_gauche.Remove(position_puissance,phrase_gauche.Length-position_puissance);
this.gauche = new operation(phrase_gauche);
string phrase_droite=this.phrase;
phrase_droite = phrase_droite.Remove(0,position_puissance+1);
this.droite = new operation(phrase_droite);
}
else{ // there is no + - / * or ^ so phrase is like "(2+x-3)" or "2" or "x" or r(2*x)...
//if phrase is in bracket (2+x-3), delete bracket
if (this.phrase.StartsWith("(")){
this.operateur="()";
string phrase_gauche=this.phrase;
phrase_gauche = phrase_gauche.Remove(0,1); //delete "(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("sqrt(")){ // root square
this.operateur = "sqrt()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,5); //delete "sqrt(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("cos(")){ // cos
this.operateur = "cos()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,4); //delete "cos(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("sin(")){ // sin
this.operateur = "sin()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,4); //delete "sin(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("tan(")){ // tan
this.operateur = "tan()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,4); //delete "tan(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("ln(")){ // ln
this.operateur = "ln()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,3); //delete "ln(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("log(")){ // log
this.operateur = "log()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,4); //delete "log(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("acos(")){ // acos
this.operateur = "acos()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,5); //delete "acos(" in beginningt
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("asin(")){ // asin
this.operateur = "asin()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,5); //delete "asin(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("atan(")){ // atan
this.operateur = "atan()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,5); //delete "atan(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //on supprime le ")" de la fin
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("cosh(")){ // cosh
this.operateur = "cosh()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,5); //delete "cosh(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("sinh(")){ // sinh
this.operateur = "sinh()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,5); //delete "sinh(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("tanh(")){ // tanh
this.operateur = "tanh()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,5); //delete "tanh(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("exp(")){ // exp
this.operateur = "exp()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,4); //delete "exp(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("abs(")){ // abs
this.operateur = "abs()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,4); //delete "abs(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
else if (this.phrase.StartsWith("int(")){ // int
this.operateur = "int()";
string phrase_gauche = this.phrase;
phrase_gauche = phrase_gauche.Remove(0,4); //delete "int(" in beginning
phrase_gauche = phrase_gauche.Remove(phrase_gauche.Length-1,1); //delete ")" in end
this.gauche = new operation(phrase_gauche);
}
}
}
}
}
public void corrige(){
if (this.phrase.StartsWith("-")){
this.phrase = this.phrase.Insert(0, "0");
}
this.phrase = this.phrase.Replace("X", "x");
this.phrase = this.phrase.Replace("(-", "(0-");
this.phrase = this.phrase.Replace("x(", "x*(");
this.phrase = this.phrase.Replace("0(", "0*(");
this.phrase = this.phrase.Replace("1(", "1*(");
this.phrase = this.phrase.Replace("2(", "2*(");
this.phrase = this.phrase.Replace("3(", "3*(");
this.phrase = this.phrase.Replace("4(", "4*(");
this.phrase = this.phrase.Replace("5(", "5*(");
this.phrase = this.phrase.Replace("6(", "6*(");
this.phrase = this.phrase.Replace("7(", "7*(");
this.phrase = this.phrase.Replace("8(", "8*(");
this.phrase = this.phrase.Replace("9(", "9*(");
this.phrase = this.phrase.Replace(")x", ")*x");
this.phrase = this.phrase.Replace("0x", "0*x");
this.phrase = this.phrase.Replace("1x", "1*x");
this.phrase = this.phrase.Replace("2x", "2*x");
this.phrase = this.phrase.Replace("3x", "3*x");
this.phrase = this.phrase.Replace("4x", "4*x");
this.phrase = this.phrase.Replace("5x", "5*x");
this.phrase = this.phrase.Replace("6x", "6*x");
this.phrase = this.phrase.Replace("7x", "7*x");
this.phrase = this.phrase.Replace("8x", "8*x");
this.phrase = this.phrase.Replace("9x", "9*x");
this.phrase = this.phrase.Replace(")(", ")*(");
}
public double calculer(double x){
double resultat=0;
//this.corrige();
this.decouper();
// cas: + - * / ^
if(this.gauche!=null && this.droite!=null){
if(this.operateur=="+"){
resultat=this.gauche.calculer(x)+this.droite.calculer(x);
return resultat;
}
else if(this.operateur=="*"){
resultat=this.gauche.calculer(x)*this.droite.calculer(x);
return resultat;
}
else if(this.operateur=="-"){
resultat=this.gauche.calculer(x)-this.droite.calculer(x);
return resultat;
}
else if(this.operateur=="/"){
resultat=this.gauche.calculer(x)/this.droite.calculer(x);
return resultat;
}
else if(this.operateur=="^"){
double gauche_double = this.gauche.calculer(x);
double droite_double = this.droite.calculer(x);
resultat = Math.Pow(gauche_double,droite_double);
return resultat;
}
}
// case: () r() cos() sin() tan() and n()
else if(this.gauche!=null){
if (this.operateur=="()"){
resultat=this.gauche.calculer(x);
return resultat;
}
else if (this.operateur=="sqrt()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Sqrt(gauche_double);
return resultat;
}
else if (this.operateur=="cos()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Cos(gauche_double);
return resultat;
}
else if (this.operateur=="sin()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Sin(gauche_double);
return resultat;
}
else if (this.operateur=="tan()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Tan(gauche_double);
return resultat;
}
else if (this.operateur=="ln()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Log(gauche_double);
return resultat;
}
else if (this.operateur=="log()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Log10(gauche_double);
return resultat;
}
else if (this.operateur=="acos()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Acos(gauche_double);
return resultat;
}
else if (this.operateur=="asin()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Asin(gauche_double);
return resultat;
}
else if (this.operateur=="atan()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Atan(gauche_double);
return resultat;
}
else if (this.operateur=="cosh()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Cosh(gauche_double);
return resultat;
}
else if (this.operateur=="sinh()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Sinh(gauche_double);
return resultat;
}
else if (this.operateur=="tanh()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Tanh(gauche_double);
return resultat;
}
else if (this.operateur=="exp()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Exp(gauche_double);
return resultat;
}
else if (this.operateur=="abs()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Abs(gauche_double);
return resultat;
}
else if (this.operateur=="int()"){
double gauche_double = this.gauche.calculer(x);
resultat = Math.Floor(gauche_double);
return resultat;
}
}
else{ // phrase is like "x" or "2,1213" or "2"
if (this.phrase=="x" || this.phrase=="X"){
return x;
}
else{
decimal res_d = Convert.ToDecimal(this.phrase);
double res_f = (double) res_d;
resultat=res_f;
return resultat;
}
}
return resultat;
}
// exemple: compte_jusqua("a", 3) for "aaaaaa" =>3
private int compte_jusqua(string ch, int fin){
int pos;
int nb=0;
bool arreter=false;
int i=0;
while( (i <= fin) && (arreter == false) && (i <= this.phrase.Length) ){
pos=phrase.IndexOf(ch, i, fin-i);
if(pos != -1){
nb++;
i=pos+1;
}
else{
arreter=true;
}
}
return nb;
}
}
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