GALVANOMÈTRE

# -*- coding: cp1252 -*-
# Galvanomètre développé pour la librairie Tkinter
# Ecrit et immaginé par Amaury
# Yvan : ajouté la version non linéaire


from Tkinter import *
from math import *
import time
import random
class Galva(Canvas):
    def __init__(self,parent):
        global valeur,root,aiguille,txt
        root=parent
        valeur=0.
        b=0
        a=0

        Canvas.__init__(self)
        #Dessin du Galva
        self.create_rectangle(0,0,200,200,fill="white",outline="white")
        self.create_rectangle(10,10,190,150,width=2,fill="white")
        self.create_rectangle(10,120,190,150,width=2,fill="grey")
        self.create_oval(25,25,175,175,width=2)
        self.create_rectangle(12,60,188,118,fill="white",outline="white")
        self.create_rectangle(12,121,188,148,fill="grey",outline="grey")
        self.create_rectangle(10,151,190,200,fill="white",outline="white")
        self.create_oval(90,125,110,145, width=2,fill="white")
        self.create_line(108,127,92,143,width=5)
        self.create_oval(95,100,105,110,fill="red",outline="red")
        a=(3-(0/50.))*(pi/4)
        x=100+90*cos(a)
        y=105-90*sin(a)
        aiguille=self.create_line(100,105,x,y,width=1,fill="red")
        txt=self.create_text(12,160, text="0")
            
        parent.update()

    def SetValue(self,consigne):
        global valeur,root,aiguille,txt
        parent=root
        
        while (int(valeur*100+.5)!=int(consigne*100+.5)):
            if (valeur<consigne):
                valeur=valeur+(float(consigne-valeur)/50)
                float (valeur)
                a=(3-(valeur/50.))*(pi/4)
                x=100+90*cos(a)
                y=105-90*sin(a)
                self.delete(aiguille)
                self.delete(txt)
                aiguille=self.create_line(100,105,x,y,width=1,fill="red")
                txt=self.create_text(12,160, text=int(valeur) )
                parent.update()
                time.sleep(0.002)       #Définie l'inertie de l'aiguille (Timer)
                

            elif(valeur>consigne):
                valeur=valeur+(float(consigne-valeur)/50)
                float (valeur)
                a=(3-(valeur/50.))*(pi/4)
                x=100+90*cos(a)
                y=105-90*sin(a)
                self.delete(aiguille)
                self.delete(txt)
                aiguille=self.create_line(100,105,x,y,width=1,fill="red")
                txt=self.create_text(12,160, text=int(valeur) )
                parent.update()
                time.sleep(0.002)       #Définie l'inertie de l'aiguille (Timer)
                

            else:
                float (valeur)
                a=(3-(valeur/50.))*(pi/4)
                x=100+90*cos(a)
                y=105-90*sin(a)
                self.delete(aiguille)
                self.delete(txt)
                aiguille=self.create_line(100,105,x,y,width=1,fill="red")
                txt=can.create_text(12,160, text=int(valeur) )
                parent.update()
                time.sleep(0.002)       #Définie l'inertie de l'aiguille (Timer)

    def SetMinValue(self,valeur):
        global valmin
        try:
            self.delete(valmin)
        except:
            pass
        valmin=self.create_text(30,30,text=str(valeur))

    def SetMaxValue(self,valeur):
        global valmax
        try:
            self.delete(valmax)
        except:
            pass
        valmax=self.create_text(170,30,text=str(valeur))

    def SetUnit(self,unite):
        global unit
        try:
            self.delete(unit)
        except:
            pass
        unit=self.create_text(100,50,text=str(unite))

    def AddScale(self,nombre):
        b=0
        self.delete(ALL)
        self.create_rectangle(0,0,200,200,fill="white",outline="white")
        self.create_rectangle(10,10,190,150,width=2,fill="white")
        self.create_rectangle(10,120,190,150,width=2,fill="grey")
        self.create_oval(25,25,175,175,width=2)
        self.create_rectangle(12,60,188,118,fill="white",outline="white")
        self.create_rectangle(12,121,188,148,fill="grey",outline="grey")
        self.create_rectangle(10,151,190,200,fill="white",outline="white")
        self.create_oval(90,125,110,145, width=2,fill="white")
        self.create_line(108,127,92,143,width=5)
        self.create_oval(95,100,105,110,fill="red",outline="red")
        a=(3-(0/50.))*(pi/4)
        x=100+90*cos(a)
        y=105-90*sin(a)
        aiguille=self.create_line(100,105,x,y,width=1,fill="red")
        txt=self.create_text(12,160, text="0")
        while (b<=100):
            a=(3-(b/50.))*(pi/4)
            x1=100+90*cos(a)
            y1=105-90*sin(a)
            x2=100+85*cos(a)
            y2=105-85*sin(a)
            self.create_line(x1,y1,x2,y2)
            b=b+(100/(nombre-1))

    def RemScale(self):
        self.delete(ALL)
        self.create_rectangle(0,0,200,200,fill="white",outline="white")
        self.create_rectangle(10,10,190,150,width=2,fill="white")
        self.create_rectangle(10,120,190,150,width=2,fill="grey")
        self.create_oval(25,25,175,175,width=2)
        self.create_rectangle(12,60,188,118,fill="white",outline="white")
        self.create_rectangle(12,121,188,148,fill="grey",outline="grey")
        self.create_rectangle(10,151,190,200,fill="white",outline="white")
        self.create_oval(90,125,110,145, width=2,fill="white")
        self.create_line(108,127,92,143,width=5)
        self.create_oval(95,100,105,110,fill="red",outline="red")
        a=(3-(0/50.))*(pi/4)
        x=100+90*cos(a)
        y=105-90*sin(a)
        aiguille=self.create_line(100,105,x,y,width=1,fill="red")
        txt=self.create_text(12,160, text="0")