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Angles (geometric), normalization and conversion: Difference between revisions
Angles (geometric), normalization and conversion (view source)
Revision as of 02:40, 7 February 2021
, 3 years ago→{{header|Python}}
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=={{header|Python}}==
===Python: Original===
<lang python>PI = 3.141592653589793
TWO_PI = 6.283185307179586
Line 2,014 ⟶ 2,015:
def rad2grad(a): return a * 200.0 / PI
def rad2mil(a): return a * 3200.0 / PI</lang>
===Python: using tkinter===
<lang python>
''' Python 3.6.5 code using Tkinter graphical user interface.
Angles (geometric), normalization and conversion challenge.
User enteres value for angle and selects a unit, then
presses 'Convert' button.
Values for that angle are shown in degrees, grads, mils
and radians.
'''
from tkinter import *
from tkinter import messagebox
import math
class Angle:
def __init__(self, gw):
self.window = gw
self.unit = StringVar()
self.unit.set(' ')
a1 = "(Enter 'Angle' & select 'Unit',"
a2 = "then click 'Convert')"
self.msga = a1 + '\n' + a2
# dictionary of functions to execute depending
# on which radio button was selected:
self.d_to_deg = {'d':self.d2d,
'g':self.g2d,
'm':self.m2d,
'r':self.r2d}
# top frame:
self.top_fr = Frame(gw,
width=600,
height=100,
bg='dodger blue')
self.top_fr.pack(fill=X)
self.hdg = Label(self.top_fr,
text=' Angle Conversion ',
font='arial 22 bold',
fg='navy',
bg='lemon chiffon')
self.hdg.place(relx=0.5, rely=0.5,
anchor=CENTER)
self.close_btn = Button(self.top_fr,
text='Quit',
bd=5,
bg='navy',
fg='lemon chiffon',
font='arial 12 bold',
command=self.close_window)
self.close_btn.place(relx=0.07, rely=0.5,
anchor=W)
self.clear_btn = Button(self.top_fr,
text='Clear',
bd=5,
bg='navy',
fg='lemon chiffon',
font='arial 12 bold',
command=self.clear_screen)
self.clear_btn.place(relx=0.92, rely=0.5,
anchor=E)
# bottom frame:
self.btm_fr = Frame(gw,
width=600,
height=500,
bg='lemon chiffon')
self.btm_fr.pack(fill=X)
self.msg = Label(self.btm_fr,
text=self.msga,
font='arial 16 bold',
fg='navy',
bg='lemon chiffon')
self.msg.place(relx=0.5, rely=0.1,
anchor=CENTER)
self.nbr_fr = LabelFrame(self.btm_fr,
text=' Angle ',
bg='dodger blue',
fg='navy',
bd=4,
relief=RIDGE,
font='arial 12 bold')
self.nbr_fr.place(relx=0.17, rely=0.27,
anchor=CENTER)
self.nbr_ent = Entry(self.nbr_fr,
justify='center',
font='arial 12 bold',
fg='navy',
bg='lemon chiffon',
bd=4,
width=10)
self.nbr_ent.grid(row=0, column=0,
padx=(8,8),
pady=(8,8))
self.su_fr = LabelFrame(self.btm_fr,
text=' Select Unit ',
bg='dodger blue',
fg='navy',
bd=8,
relief=RIDGE,
font='arial 12 bold')
self.su_fr.place(relx=0.48, rely=0.35,
anchor=CENTER)
self.radiod = Radiobutton(self.su_fr,
text='degree',
font='arial 12 bold',
fg='navy',
bg='dodger blue',
variable=self.unit,
value='d')
self.radiod.pack(side='top', anchor='w')
self.radiog = Radiobutton(self.su_fr,
text='gradian',
font='arial 12 bold',
fg='navy',
bg='dodger blue',
variable=self.unit,
value='g')
self.radiog.pack(side='top', anchor='w')
self.radiom = Radiobutton(self.su_fr,
text='mil',
font='arial 12 bold',
fg='navy',
bg='dodger blue',
variable=self.unit,
value='m')
self.radiom.pack(side='top', anchor='w')
self.radior = Radiobutton(self.su_fr,
text='radian',
font='arial 12 bold',
fg='navy',
bg='dodger blue',
variable=self.unit,
value='r')
self.radior.pack(side='top', anchor='w')
self.convert_btn = Button(self.btm_fr,
text='Convert',
width=14,
bd=5,
bg='dodger blue',
fg='navy',
font='arial 12 bold',
command=self.convert)
self.convert_btn.place(relx=0.93, rely=.25,
anchor=E)
self.res_fr = LabelFrame(self.btm_fr,
text=' Results ',
bg='dodger blue',
fg='navy',
bd=8,
width=230,
height=130,
relief=RIDGE,
font='arial 12 bold')
self.res_fr.place(relx=0.48, rely=0.74,
anchor=CENTER)
objh = 20 # widget height
lblw = 80 # label width
valw = 100 # value width
lblx = 15 # x-position of label in frame
valx = 100 # x-position of value in frame
objy = 5 # y-position of widget in frame
self.deg_lbl = Label(self.res_fr,
text=' degrees: ',
anchor=E,
font='"Noto Mono" 12 bold',
fg='navy',
bg='lemon chiffon')
self.deg_lbl.place(x=lblx, y=objy,
height=objh, width=lblw)
self.deg_val = Label(self.res_fr,
text=' ',
anchor=E,
padx = 3,
font='"Noto Mono" 12 bold',
fg='navy',
bg='lemon chiffon')
self.deg_val.place(x=valx, y=objy,
height=objh, width=valw)
objy = objy + objh # next row
self.grd_lbl = Label(self.res_fr,
text=' grads: ',
anchor=E,
font='"Noto Mono" 12 bold',
fg='navy',
bg='lemon chiffon')
self.grd_lbl.place(x=lblx, y=objy,
height=objh, width=lblw)
self.grd_val = Label(self.res_fr,
text=' ',
anchor=E,
padx = 3,
font='"Noto Mono" 12 bold',
fg='navy',
bg='lemon chiffon')
self.grd_val.place(x=valx, y=objy,
height=objh, width=valw)
objy = objy + objh # next row
self.mil_lbl = Label(self.res_fr,
text=' mils: ',
anchor=E,
font='"Noto Mono" 12 bold',
fg='navy',
bg='lemon chiffon')
self.mil_lbl.place(x=lblx, y=objy,
height=objh, width=lblw)
self.mil_val = Label(self.res_fr,
text=' ',
anchor=E,
padx = 3,
font='"Noto Mono" 12 bold',
fg='navy',
bg='lemon chiffon')
self.mil_val.place(x=valx, y=objy,
height=objh, width=valw)
objy = objy + objh # next row
self.rad_lbl = Label(self.res_fr,
text='radians: ',
anchor=E,
font='"Noto Mono" 12 bold',
fg='navy',
bg='lemon chiffon')
self.rad_lbl.place(x=lblx, y=objy,
height=objh, width=lblw)
self.rad_val = Label(self.res_fr,
text=' ',
anchor=E,
padx = 3,
font='"Noto Mono" 12 bold',
fg='navy',
bg='lemon chiffon')
self.rad_val.place(x=valx, y=objy,
height=objh, width=valw)
# process conversion request:
def convert(self):
# edit requested angle and unit:
try:
a = float(self.nbr_ent.get())
except:
self.err_msg('Angle entry must be numeric')
return
u = self.unit.get()
if u not in self.d_to_deg:
self.err_msg('Unit must be selected')
return
# convert request to degrees:
deg = self.d_to_deg[u](a)
# normalize:
self.deg = self.normalize(deg)
# convert to grads, mils, radians
self.grad = self.d2g(self.deg)
self.mil = self.d2m(self.deg)
self.rad = self.d2r(self.deg)
# show results
self.deg_val.config(text=self.format_angle(self.deg))
self.grd_val.config(text=self.format_angle(self.grad))
self.mil_val.config(text=self.format_angle(self.mil))
self.rad_val.config(text=self.format_angle(self.rad))
return
def d2d(self, a):
return a
def g2d(self, a):
return .9 * a
def r2d(self, a):
return 180 * a / math.pi
def m2d(self, a):
return .05625 * a
def normalize(self, a):
if a >= 0:
x = a % 360
else:
x = -(-a % 360)
if x == -0.0:
x = 0.0
return x
def d2g(self, a):
return 10 * a / 9
def d2m(self, a):
return 160 * a / 9
def d2r(self, a):
return math.pi * a / 180
def format_angle(self, a):
return f'{a:.4f}'
def err_msg(self, msg):
messagebox.showerror('Error Message', msg)
return
# restore screen to it's 'initial' state:
def clear_screen(self):
self.nbr_ent.delete(0, 'end')
self.unit.set(' ')
self.deg_val.config(text='')
self.grd_val.config(text='')
self.mil_val.config(text='')
self.rad_val.config(text='')
return
def close_window(self):
self.window.destroy()
# ************************************************
root = Tk()
root.title('ANGLES')
root.geometry('600x600+100+50')
root.resizable(False, False)
a = Angle(root)
root.mainloop()
# ************************************************
## I wish I could show a screenshot of the tkinter window
## to show how the input and output appear, but I don't know
## if that is possible here.
## I have processed all of the suggested angles and the
## results matched those from a few other languages on this
## page.
</lang>
=={{header|Racket}}==
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