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Programme pour faire de la trigonométrie.
SQRT veut dire racine carrée. Et écrire pi dans l’entrée texte pour en avoir la valeur.

from math import *
from kandinsky import *
from ion import *

BACK=(255,)*3
COLOR=(0,)*3

COS_COLOR=(255,0,0)
SIN_COLOR=(0,0,255)
ANG_COLOR=(0,255,0)

ang_txt=""
sin_txt=""
cos_txt=""
a_input="pi/3"
a=0

def draw_line(x1,y1,x2,y2,c):
  width=x2-x1
  height=y2-y1
  if abs(width)>=abs(height):
    div=height/width
    for i in range(0,width,(width>0)*2-1):
      set_pixel(x1+i,y1+int(div*i),c)
  else:
    div=width/height
    for i in range(0,height,(height>0)*2-1):
      set_pixel(x1+int(div*i),y1+i,c)


def draw_all():
  fill_rect(0,0,320,222,BACK)
  fill_rect(0,160,320,1,COLOR)
  fill_rect(0,80,320,1,COLOR)
  fill_rect(160,0,1,160,COLOR)
  for i in range(500):
    set_pixel(160+int(cos(i/500*2*pi)*70),80-int(sin(i/500*2*pi)*70),COLOR)

  x,y=160+int(cos(a)*70),80-int(sin(a)*70)
  draw_line(160,80,x,y,COLOR)

  for i in range(int(500*a/(2*pi))):
    set_pixel(160+int(cos(i/500*2*pi)*20),80-int(sin(i/500*2*pi)*20),ANG_COLOR)
  fill_rect(0,y,320,1,SIN_COLOR)
  fill_rect(x,0,1,160,COS_COLOR)

  draw_string("    a ="+ang_txt,5,162,ANG_COLOR,BACK)
  draw_string("sin(a)="+sin_txt,5,182,SIN_COLOR,BACK)
  draw_string("cos(a)="+cos_txt,5,202,COS_COLOR,BACK)

  fill_rect(240,170,70,40,(200,200,0))
  draw_string("Ok pour",240,173,(0,)*3,(200,200,0))
  draw_string("changer",240,193,(0,)*3,(200,200,0))


def get_txt_values(a):
  l=[
  ["0"      ,"0"         ,"1"],
  ["pi/6"   ,"0.5"      ,"sqrt(3)/2"],
  ["pi/4"   ,"sqrt(2)/2","sqrt(2)/2"],
  ["pi/3"   ,"sqrt(3)/2","0.5"],
  ["pi/2"   ,"1"        ,"0"],
  ["2*pi/3" ,"sqrt(3)/2","-0.5"],
  ["3*pi/4" ,"sqrt(2)/2","-sqrt(2)/2"],
  ["5*pi/6" ,"0.5"      ,"-sqrt(3)/2"],
  ["pi"     ,"0"         ,"-1"],
  ["-pi/6"  ,"-0.5"      ,"sqrt(3)/2"],
  ["-pi/4"  ,"-sqrt(2)/2","sqrt(2)/2"],
  ["-pi/3"  ,"-sqrt(3)/2","0.5"],
  ["-pi/2"  ,"-1"        ,"0"],
  ["-2*pi/3","-sqrt(3)/2","-0.5"],
  ["-3*pi/4","-sqrt(2)/2","-sqrt(2)/2"],
  ["-5*pi/6","-0.5"      ,"-sqrt(3)/2"],
  ]
  for i in l:
    if eval(i[0])%(2*pi)==a:
      return i

while a_input!="":
  a=eval(a_input)%(2*pi)
  if get_txt_values(a):
    ang_txt,sin_txt,cos_txt=get_txt_values(a)
  else:
    ang_txt,sin_txt,cos_txt=str(a)[:8],str(sin(a))[:8],str(cos(a))[:8]
  draw_all()
  while not keydown(KEY_OK):
    pass  
  a_input=input("Valeur de l'angle, en radians:")

print("Rien mis, donc fin du programme")