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tireon.py
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tireon.py
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from math import *
from time import time
try:
from tkinter import filedialog
from tkinter import *
except:
import tkFileDialog as filedialog
from Tkinter import *
coeff_base = ['Fz','Camber', 'aos']
coeff_fy = ['a0','a1','a2','a3','a4','a5','a6','a7','a8','a9','a10','a111','a112','a12','a13']
coeff_fx = ['b0','b1','b2','b3','b4','b5','b6','b7','b8','b9','b10']
coeff_mz = ['c0','c1','c2','c3','c4','c5','c6','c7','c8','c9','c10','c11','c12','c13','c14','c15','c16','c17']
coeff_fxy = ['gy1','gy2','gx1','gx2']
coeff_min = {
# Base parameters
'Fz':0.5,
'Camber':-8.0,
'aos':2.0,
# Lateral force
'a0':1,
'a1':-100,
'a2':1,
'a3':1,
'a4':1,
'a5':-0.1,
'a6':-10,
'a7':-10,
'a8':-0.5,
'a9':-10,
'a10':-10,
'a111':-10,
'a112':-10,
'a12':-100,
'a13':-10,
# Longitudinal force
'b0':1,
'b1':-300,
'b2':1,
'b3':-100,
'b4':-1000,
'b5':-10,
'b6':-10,
'b7':-10,
'b8':-10,
'b9':-10,
'b10':-10,
# Aligning moment
'c0':1,
'c1':-10,
'c2':-30,
'c3':-10,
'c4':-100,
'c5':-10,
'c6':-10,
'c7':-10,
'c8':-10,
'c9':-30,
'c10':-10,
'c11':-10,
'c12':-10,
'c13':-10,
'c14':-10,
'c15':-10,
'c16':-10,
'c17':-10,
# Combined
'gy1':0,
'gy2':0,
'gx1':0,
'gx2':0,
}
coeff_max = {
# Base parameters
'Fz':8.5,
'Camber':8.0,
'aos':30.0,
# Lateral force
'a0':3,
'a1':100,
'a2':2500,
'a3':5000,
'a4':100,
'a5':0.1,
'a6':10,
'a7':10,
'a8':0.5,
'a9':10,
'a10':10,
'a111':10,
'a112':10,
'a12':100,
'a13':10,
# Longitudinal force
'b0':3,
'b1':300,
'b2':2500,
'b3':100,
'b4':1000,
'b5':10,
'b6':10,
'b7':10,
'b8':10,
'b9':10,
'b10':10,
# Aligning moment
'c0':7,
'c1':10,
'c2':10,
'c3':10,
'c4':100,
'c5':10.0,
'c6':10.0,
'c7':10,
'c8':10,
'c9':10,
'c10':10,
'c11':10,
'c12':10,
'c13':10,
'c14':10,
'c15':10,
'c16':10,
'c17':10,
# Combined
'gy1':50,
'gy2':50,
'gx1':50,
'gx2':50,
}
coeff_default = {
# Base parameters
'Fz':3.0,
'Camber':0.0,
'aos':8.0,
# Lateral force
'a0':1.4,
'a1':-0,
'a2':1688,
'a3':2400,
'a4':6.026,
'a5':0,
'a6':-0.359,
'a7':1.0,
'a8':0,
'a9':-0.00611,
'a10':-0.0322,
'a111':0,
'a112':0,
'a12':0,
'a13':0,
# Longitudinal force
'b0':1.65,
'b1':0,
'b2':1690,
'b3':0,
'b4':229,
'b5':0,
'b6':0,
'b7':0,
'b8':-10,
'b9':0,
'b10':0,
# Aligning moment
'c0':2.3,
'c1':-3.8,
'c2':-3.14,
'c3':-1.16,
'c4':-7.2,
'c5':0.0,
'c6':0.0,
'c7':0.044,
'c8':-0.58,
'c9':0.18,
'c10':0.0,
'c11':0.0,
'c12':0.0,
'c13':0.0,
'c14':0.14,
'c15':-1.029,
'c16':0.0,
'c17':0.0,
# Combined
'gy1':11.14388,
'gy2':10.14162,
'gx1':24.8565,
'gx2':22.43545,
}
coeff_info = {
# Base parameters
'Fz':'Current tire load [N]',
'Camber':'Current camber [deg]',
'aos':'Current angle of slip [deg]',
# Lateral force
'a0':'Shape factor',
'a1':'Peak variation with square load',
'a2':'Peak variation with load',
'a3':'Slope factor',
'a4':'Slope variation with load',
'a5':'Slope variation with camber',
'a6':'Curvature variation with load',
'a7':'Curvature factor',
'a8':'Horizontal shift variation with camber',
'a9':'Horizontal shift variation with load',
'a10':'Horizontal shift',
'a111':'Vertical shift variation with camber and square load',
'a112':'Vertical shift variation with camber and load',
'a12':'Vertical shift variation with load',
'a13':'Vertical shift',
# Longitudinal force
'b0':'Shape factor',
'b1':'Peak variation with square load',
'b2':'Peak variation with load',
'b3':'Slope variation with square load',
'b4':'Slope variation with load',
'b5':'Slope variation exp load factor',
'b6':'Curvature variation with square load',
'b7':'Curvature variation with load',
'b8':'Curvature factor',
'b9':'Horizontal shift variation with load',
'b10':'Horizontal shift',
# Aligning moment
'c0':'Shape factor',
'c1':'Peak variation with square load',
'c2':'Peak variation with load',
'c3':'Slope variation with square load',
'c4':'Slope variation with load',
'c5':'Slope variation exp load factor',
'c6':'Slope variation camber factor',
'c7':'Curvature variation with camber and square load',
'c8':'Curvature variation with camber and load',
'c9':'Curvature variation with camber',
'c10':'Curvature variation camber factor',
'c11':'Horizontal shift variation with camber',
'c12':'Horizontal shift variation with load',
'c13':'Horizontal shift',
'c14':'Vertical shift variation with camber and cubic load',
'c15':'Vertical shift variation with camber and load',
'c16':'Vertical shift variation with load',
'c17':'Vertical shift',
# Combined
'gy1':'Slope factor for combined Fy reduction',
'gy2':'Slope variation of Fy reduction with slip angle',
'gx1':'Slope factor of Fx reduction for combined slip',
'gx2':'Slope variation of Fx reduction with slip',
}
# |x| <= 1, error 2.5E-6
def Atan1(x):
s = x * x
p = -1.2490720064867844e-02
p = +5.5063351366968050e-02 + p * s
p = -1.1921576270475498e-01 + p * s
p = +1.9498657165383548e-01 + p * s
p = -3.3294527685374087e-01 + p * s
p = 1 + p * s
p = p * x
return p
# error 2.5E-6
def Atan(x):
if x * x < 1:
return Atan1(x)
return copysign(pi * 0.5, x) - Atan1(1 / x)
# |x| <= pi/2
# max error: 1E-6
def SinPi2(x):
s = x * x
p = -1.8447486103462252e-04
p = +8.3109378830028557e-03 + p * s
p = -1.6665578084732124e-01 + p * s
p = 1 + p * s
p = p * x
return p
# |x| <= pi
# max error: 1E-6
def SinPi(x):
if abs(x) > pi * 0.5:
x = copysign(pi, x) - x
return SinPi2(x)
def CosAtan(x):
return 1 / sqrt(x * x + 1)
def Sin2Atan(x, y):
return 2 * x * y / (x * x + y * y)
def Pacejka(P, S):
B, C, D, E, Sh, Sv = P
BS = B * (S + Sh)
return D * SinPi(C * Atan(BS - E * (BS - Atan(BS)))) + Sv
# Longitudinal force
def PacejkaFx(p, Fz):
# shape factor
C = p['b0']
# peak factor
D = (p['b1'] * Fz + p['b2']) * Fz
# slope at origin
BCD = (p['b3'] * Fz + p['b4']) * Fz * exp(-p['b5'] * Fz)
# stiffness factor
B = BCD / (C * D)
# curvature factor
E = p['b6'] * Fz * Fz + p['b7'] * Fz + p['b8']
# curvature factor 1993
#E = E * (1 - p['b13'] * sgn(S))
# horizontal shift
Sh = p['b9'] * Fz + p['b10']
Sv = 0.0
# vertical shift 1993
#Sv = p['b11'] * Fz + p['b12']
return B, C, D, E, Sh, Sv
# Lateral force
def PacejkaFy(p, gamma, Fz):
# shape factor
C = p['a0']
# peak factor
D = (p['a1'] * Fz + p['a2']) * Fz
# peak factor 1993
# D = D * (1 - p['a14'] * gamma * gamma)
# slope at origin
BCD = p['a3'] * Sin2Atan(Fz, p['a4']) * (1 - p['a5'] * fabs(gamma))
# stiffness factor
B = BCD / (C * D)
# curvature factor
E = p['a6'] * Fz + p['a7']
# curvature factor 1993
# E = E * (1 - (p['a15'] * gamma + p['a16']) * sgn(alpha + Sh))
# horizontal shift
Sh = p['a8'] * gamma + p['a9'] * Fz + p['a10']
# horizontal shift 1993
# Sh = p['a8'] * Fz + p['a9'] + p['a10'] * gamma
# vertical shift
Sv = ((p['a111'] * Fz + p['a112']) * gamma + p['a12']) * Fz + p['a13']
# vertical shift 1993
# Sv = p['a111'] * Fz + p['a112'] + (p['a12'] * Fz * Fz + p['a13'] * Fz) * gamma
return B, C, D, E, Sh, Sv
# Aligning moment
def PacejkaMz(p, gamma, Fz):
# shape factor
C = p['c0']
# peak factor
D = (p['c1'] * Fz + p['c2']) * Fz
# peak factor 1993
# D = D * (1 - p['c18'] * gamma * gamma)
# slope at origin
BCD = (p['c3'] * Fz + p['c4']) * Fz * (1.0 - p['c6'] * fabs(gamma)) * exp (-p['c5'] * Fz)
# stiffness factor
B = BCD / (C * D)
# curvature factor
E = (p['c7'] * Fz * Fz + p['c8'] * Fz + p['c9']) * (1.0 - p['c10'] * fabs(gamma))
# curvature factor 1993
# E = (p['c7'] * Fz * Fz + p['c8'] * Fz + p['c9']) * (1.0 - (p['c19'] * gamma + p['c20']) * sgn(S)) / (1.0 - p['c10'] * fabs(gamma))
# horizontal shift
Sh = p['c11'] * gamma + p['c12'] * Fz + p['c13']
# horizontal shift 1993
# Sh = p['c11'] * Fz + p['c12'] + p['c13'] * gamma
# vertical shift
Sv = (p['c14'] * Fz * Fz + p['c15'] * Fz) * gamma + p['c16'] * Fz + p['c17']
# vertical shift 1993
# Sv = p['c14'] * Fz + p['c15'] + (p['c16'] * Fz * Fz + p['c17'] * Fz) * gamma
return B, C, D, E, Sh, Sv
# Longitudinal force combining factor, alpha in rad
def PacejkaGx(p, sigma, alpha):
a = p['gx2'] * sigma
b = p['gx1'] * alpha
c = a * a + 1
return sqrt(c / (c + b * b))
# Lateral force combining factor, alpha in rad
def PacejkaGy(p, sigma, alpha):
a = p['gy2'] * alpha
b = p['gy1'] * sigma
c = a * a + 1
return sqrt(c / (c + b * b))
def PacejkaFx0(p, sigma, Fz, dFz):
Fz0 = p['FZ0']
# vertical shift
Sv = Fz * (p['PVX1'] + p['PVX2'] * dFz)
# horizontal shift
Sh = p['PHX1'] + p['PHX2'] * dFz
# composite slip
S = sigma + Sh
# slope at origin
K = Fz * (p['PKX1'] + p['PKX2'] * dFz) * exp(-p['PKX3'] * dFz)
# curvature factor
E = (p['PEX1'] + p['PEX2'] * dFz + p['PEX3'] * dFz * dFz) * (1 - p['PEX4'] * copysign(1, S))
# peak factor
D = Fz * (p['PDX1'] + p['PDX2'] * dFz)
# shape factor
C = p['PCX1']
# stiffness factor
B = K / (C * D)
BS = B * S
# force
return D * sin(C * atan(BS - E * (BS - atan(BS)))) + Sv
def PacejkaFy0(p, alpha, gamma, Fz, dFz):
Fz0 = p['FZ0']
# vertical shift
Sv = Fz * (p['PVY1'] + p['PVY2'] * dFz + (p['PVY3'] + p['PVY4'] * dFz) * gamma)
# horizontal shift
Sh = p['PHY1'] + p['PHY2'] * dFz + p['PHY3'] * gamma
# composite slip angle
A = alpha + Sh;
# slope at origin
K = p['PKY1'] * Fz0 * Sin2Atan(Fz, p['PKY2'] * Fz0) * (1 - p['PKY3'] * abs(gamma))
# curvature factor
E = (p['PEY1'] + p['PEY2'] * dFz) * (1 - (p['PEY3'] + p['PEY4'] * gamma) * copysign(1, A))
# peak factor
D = Fz * (p['PDY1'] + p['PDY2'] * dFz) * (1 - p['PDY3'] * gamma * gamma)
# shape factor
C = p['PCY1']
# stiffness factor
B = K / (C * D)
BA = B * A
# force
Fy = D * sin(C * atan(BA - E * (BA - atan(BA)))) + Sv
Dy = D
BCy = B * C
Shf = Sh + Sv / K
return Fy, Dy, BCy, Shf
def PacejkaMz0(p, alpha, gamma, Fz, dFz, Fy, BCy, Shf):
Fz0 = p['FZ0']
R0 = 0.3
yz = gamma
cosa = cos(alpha)
Sht = p['QHZ1'] + p['QHZ2'] * dFz + (p['QHZ3'] + p['QHZ4'] * dFz) * yz
At = alpha + Sht
Bt = (p['QBZ1'] + p['QBZ2'] * dFz + p['QBZ3'] * dFz * dFz) * (1 + p['QBZ4'] * yz + p['QBZ5'] * abs(yz))
BAt = Bt * At
Ct = p['QCZ1']
Dt = Fz * (p['QDZ1'] + p['QDZ2'] * dFz) * (1 + p['QDZ3'] * yz + p['QDZ4'] * yz * yz) * (R0 / Fz0)
Et = (p['QEZ1'] + p['QEZ2'] * dFz + p['QEZ3'] * dFz * dFz) * (1 + (p['QEZ4'] + p['QEZ5'] * yz) * atan(Ct * BAt))
Mzt = -Fy * Dt * cos(Ct * atan(BAt - Et * (BAt - atan(BAt)))) * cosa
Ar = alpha + Shf
Br = p['QBZ10'] * BCy
Dr = Fz * (p['QDZ6'] + p['QDZ7'] * dFz + (p['QDZ8'] + p['QDZ9'] * dFz) * yz) * R0
Mzr = Dr * CosAtan(Br * Ar) * cosa
return Mzt + Mzr
def PacejkaGx0(p, sigma, alpha):
# CosAtan(x)) = 1 / sqrt(1 + x * x)
B = p['RBX1'] * CosAtan(p['RBX2'] * sigma)
C = p['RCX1']
Sh = p['RHX1']
S = alpha + Sh
G0 = cos(C * atan(B * Sh))
G = cos(C * atan(B * S)) / G0
return G
def PacejkaGy0(p, sigma, alpha):
B = p['RBY1'] * CosAtan(p['RBY2'] * (alpha - p['RBY3']))
C = p['RCY1']
Sh = p['RHY1']
S = sigma + Sh
G0 = cos(C * atan(B * Sh))
G = cos(C * atan(B * S)) / G0
return G
def PacejkaSvy0(p, sigma, alpha, gamma, dFz, Dy):
Dv = Dy * (p['RVY1'] + p['RVY2'] * dFz + p['RVY3'] * gamma) * CosAtan(p['RVY4'] * alpha)
Sv = Dv * sin(p['RVY5'] * atan(p['RVY6'] * sigma))
return Sv
def PacejkadFz0(p, Fz):
Fz0 = p['FZ0']
dFz = (Fz - Fz0) / Fz0;
return dFz
def Pacejka0(p, sigma, alpha, gamma, Fz):
dFz = PacejkadFz0(p, Fz)
Fx = PacejkaFx0(p, sigma, Fz, dFz)
Fy, Dy, BCy, Shf = PacejkaFy0(p, alpha, gamma, Fz, dFz)
Mz = PacejkaMz0(p, alpha, gamma, Fz, dFz, Fy, BCy, Shf)
return Fx, Fy, Mz
def PacejkaCombine0(p, sigma, alpha, gamma, Fx0, Fy0, Dy, dFz):
Gx = PacejkaGx0(p, sigma, alpha)
Gy = PacejkaGy0(p, sigma, alpha)
Svy = PacejkaSvy0(p, sigma, alpha, gamma, Dy, dFz)
Fx = Gx * Fx0
Fy = Gy * Fy0 + Svy
return Fx, Fy
class ToolTip( Toplevel ):
"""
Provides a ToolTip widget for Tkinter.
To apply a ToolTip to any Tkinter widget, simply pass the widget to the
ToolTip constructor
"""
def __init__( self, wdgt, msg=None, msgFunc=None, delay=1, follow=True ):
"""
Initialize the ToolTip
Arguments:
wdgt: The widget this ToolTip is assigned to
msg: A static string message assigned to the ToolTip
msgFunc: A function that retrieves a string to use as the ToolTip text
delay: The delay in seconds before the ToolTip appears(may be float)
follow: If True, the ToolTip follows motion, otherwise hides
"""
self.wdgt = wdgt
self.parent = self.wdgt.master # The parent of the ToolTip is the parent of the ToolTips widget
Toplevel.__init__( self, self.parent, bg='black', padx=1, pady=1 ) # Initalise the Toplevel
self.withdraw() # Hide initially
self.overrideredirect( True ) # The ToolTip Toplevel should have no frame or title bar
self.msgVar = StringVar() # The msgVar will contain the text displayed by the ToolTip
if msg == None:
self.msgVar.set( 'No message provided' )
else:
self.msgVar.set( msg )
self.msgFunc = msgFunc
self.delay = delay
self.follow = follow
self.visible = 0
self.lastMotion = 0
Message( self, textvariable=self.msgVar, bg='#FFFFDD',
aspect=1000 ).grid() # The test of the ToolTip is displayed in a Message widget
self.wdgt.bind( '<Enter>', self.spawn, '+' ) # Add bindings to the widget. This will NOT override bindings that the widget already has
self.wdgt.bind( '<Leave>', self.hide, '+' )
self.wdgt.bind( '<Motion>', self.move, '+' )
def spawn( self, event=None ):
"""
Spawn the ToolTip. This simply makes the ToolTip eligible for display.
Usually this is caused by entering the widget
Arguments:
event: The event that called this funciton
"""
self.visible = 1
self.after( int( self.delay * 1000 ), self.show ) # The after function takes a time argument in miliseconds
def show( self ):
"""
Displays the ToolTip if the time delay has been long enough
"""
if self.visible == 1 and time() - self.lastMotion > self.delay:
self.visible = 2
if self.visible == 2:
self.deiconify()
def move( self, event ):
"""
Processes motion within the widget.
Arguments:
event: The event that called this function
"""
self.lastMotion = time()
if self.follow == False: # If the follow flag is not set, motion within the widget will make the ToolTip dissapear
self.withdraw()
self.visible = 1
self.geometry( '+%i+%i' % ( event.x_root+10, event.y_root+10 ) ) # Offset the ToolTip 10x10 pixes southwest of the pointer
try:
self.msgVar.set( self.msgFunc() ) # Try to call the message function. Will not change the message if the message function is None or the message function fails
except:
pass
self.after( int( self.delay * 1000 ), self.show )
def hide( self, event=None ):
"""
Hides the ToolTip. Usually this is caused by leaving the widget
Arguments:
event: The event that called this function
"""
self.visible = 0
self.withdraw()
# a vertical scrollable frame
class VerticalScrolledFrame(Frame):
"""A pure Tkinter scrollable frame that actually works!
* Use the 'interior' attribute to place widgets inside the scrollable frame
* Construct and pack/place/grid normally
* This frame only allows vertical scrolling
"""
def __init__(self, parent, *args, **kw):
Frame.__init__(self, parent, *args, **kw)
# create a canvas object and a vertical scrollbar for scrolling it
vscrollbar = Scrollbar(self, orient=VERTICAL)
vscrollbar.pack(fill=Y, side=RIGHT, expand=FALSE)
canvas = Canvas(self, bd=0, highlightthickness=0,
yscrollcommand=vscrollbar.set)
canvas.pack(side=LEFT, fill=BOTH, expand=TRUE)
vscrollbar.config(command=canvas.yview)
# reset the view
canvas.xview_moveto(0)
canvas.yview_moveto(0)
# create a frame inside the canvas which will be scrolled with it
self.interior = interior = Frame(canvas)
interior_id = canvas.create_window(0, 0, window=interior,anchor=NW)
# track changes to the canvas and frame width and sync them,
# also updating the scrollbar
def _configure_interior(event):
# update the scrollbars to match the size of the inner frame
size = (interior.winfo_reqwidth(), interior.winfo_reqheight())
canvas.config(scrollregion="0 0 %s %s" % size)
if interior.winfo_reqwidth() != canvas.winfo_width():
# update the canvas's width to fit the inner frame
canvas.config(width=interior.winfo_reqwidth())
interior.bind('<Configure>', _configure_interior)
def _configure_canvas(event):
if interior.winfo_reqwidth() != canvas.winfo_width():
# update the inner frame's width to fill the canvas
canvas.itemconfigure(interior_id, width=canvas.winfo_width())
canvas.bind('<Configure>', _configure_canvas)
# a base tab class
class Tab(Frame):
def __init__(self, master, name, color):
Frame.__init__(self, master)
self.tab_name = name
self.color = color
# the actual tab bar
class TabBar(Frame):
def __init__(self, master=None, init_name=None):
Frame.__init__(self, master)
self.tabs = {}
self.buttons = {}
self.current_tab = None
self.init_name = init_name
def show(self):
self.pack(side=TOP, anchor=N, fill=X)
self.switch_tab(self.init_name or self.tabs.keys()[-1]) # switch to the first tab
def add(self, tab):
tab.pack_forget() # hide the tab on init
self.tabs[tab.tab_name] = tab # add it to the list of tabs
b = Button(self, text=tab.tab_name, fg=tab.color, relief=RAISED,
command=(lambda name=tab.tab_name: self.switch_tab(name))) # set the command to switch tabs
b.pack(side=LEFT, fill=X, expand=YES) # pack the buttont to the left
self.buttons[tab.tab_name] = b # add it to the list of buttons
def delete(self, tabname):
if tabname == self.current_tab:
self.current_tab = None
self.tabs[tabname].pack_forget()
del self.tabs[tabname]
self.switch_tab(self.tabs.keys()[0])
else:
del self.tabs[tabname]
self.buttons[tabname].pack_forget()
del self.buttons[tabname]
def switch_tab(self, name):
if self.current_tab:
self.buttons[self.current_tab].config(relief=RAISED)
self.tabs[self.current_tab].pack_forget() # hide the current tab
self.tabs[name].pack(side=TOP, fill=X) # add the new tab to the display
self.current_tab = name # set the current tab to itself
self.buttons[name].config(relief=FLAT) # set it to the selected style
# custom slider class
class Slider(Frame):
def __init__(self, parent, id, v, vmin, vmax, call):
Frame.__init__(self, parent)
self.call = call
self.id = id
self.vmin = vmin
self.vmax = vmax
self.dv = DoubleVar()
self.sv = StringVar()
self.sv.trace('w', lambda name, idx, mode, var=self.sv: self.validate(var))
self.tl = Label(self, text=id)
self.tl.pack(side=LEFT, anchor=S)
self.s = Scale(self, from_=vmin, to=vmax, resolution=(vmax-vmin)/10000.0,
length=160, orient="horizontal", showvalue=0,
variable=self.dv, command=self.command)
self.s.pack(side=RIGHT, anchor=S)
vl = Entry(self, width=8, textvariable=self.sv)
vl.pack(side=RIGHT, anchor=S)
self.set(v)
def set(self, val):
self.dv.set(val)
self.sv.set(str(val))
self.call(self.id, val)
def validate(self, val):
vn = val.get()
#print("validate", self.id, vn)
try:
vn = float(vn)
if (vn >= self.vmin and vn <= self.vmax):
self.dv.set(vn)
self.call(self.id, vn)
except:
return
def command(self, val):
#print("command", self.id, val)
self.sv.set(val)
self.call(self.id, float(val))
def addSlider(parent, txt, val, vmin, vmax, vinfo, call):
s = Slider(parent, txt, val, vmin, vmax, call)
s.pack(anchor=N, fill=X)
ToolTip(s.tl, msg=vinfo, delay=0.3)
return s
class App:
def __init__(self, root):
self.need_redraw = False
self.canvas_size = 512
self.samples = 256
self.slip_max = 1.0
self.slip_angle_max = 30.0
self.coeff = coeff_default.copy()
self.coeffn = {}
self.file_opt = {
'defaultextension':'.tire',
'filetypes':[('tire files', '.tire'), ('all files', '.*')],
'initialdir':'.',
'initialfile':'touring.tire',
'parent':root,
'title':'Select tire config file',
}
self.file_optn = {
'defaultextension':'.tiren',
'filetypes':[('tire files', '.tiren'), ('all files', '.*')],
'initialdir':'.',
'initialfile':'touring.tiren',
'parent':root,
'title':'Select tire config file',
}
root.title('VDrift Tire Editor ON')
frame = VerticalScrolledFrame(root)
frame.pack(fill=BOTH, expand=TRUE)
sframe = Frame(frame.interior, width=256)
sframe.pack(side=LEFT, fill=Y)
cframe = Frame(frame.interior, width=512)
cframe.pack(side=TOP, anchor=NW)
self.canvas = Canvas(cframe, width=self.canvas_size, height=self.canvas_size)
self.canvas.pack(fill=BOTH, expand=YES)
# load/save buttons
bframe = Frame(sframe, width=256)
Button(bframe, text='Load Ref', command=self.loadref).pack(side=LEFT, fill=X, expand=YES)
Button(bframe, text='Load', command=self.load).pack(side=LEFT, fill=X, expand=YES)
Button(bframe, text='Save', command=self.save).pack(side=LEFT, fill=X, expand=YES)
bframe.pack(anchor=N, fill=X)
# base coeff sliders
self.sliders = {}
for n in coeff_base:
s = addSlider(sframe, n, self.coeff[n], coeff_min[n], coeff_max[n], coeff_info[n], self.update)
self.sliders[n] = s
# tire coeff slider tabs
bar = TabBar(sframe, "Fx")
tabx = Tab(sframe, "Fx", 'red')
taby = Tab(sframe, "Fy", 'blue')
tabz = Tab(sframe, "Mz", 'brown')
tabc = Tab(sframe, 'Fxy', 'black')
for n in coeff_fx:
s = addSlider(tabx, n, self.coeff[n], coeff_min[n], coeff_max[n], coeff_info[n], self.update)
self.sliders[n] = s
for n in coeff_fy:
s = addSlider(taby, n, self.coeff[n], coeff_min[n], coeff_max[n], coeff_info[n], self.update)
self.sliders[n] = s
for n in coeff_mz:
s = addSlider(tabz, n, self.coeff[n], coeff_min[n], coeff_max[n], coeff_info[n], self.update)
self.sliders[n] = s
for n in coeff_fxy:
s = addSlider(tabc, n, self.coeff[n], coeff_min[n], coeff_max[n], coeff_info[n], self.update)
self.sliders[n] = s
bar.add(tabx)
bar.add(taby)
bar.add(tabz)
bar.add(tabc)
bar.show()
def loadref(self):
f = filedialog.askopenfile(mode='r', **self.file_optn)
if not f:
return
for line in f:
line = line.split('#')[0]
if line.startswith('F') or line.startswith('P') or line.startswith('Q') or line.startswith('R'):
name, value = line.split('=')
name, value = name.strip(), value.strip()
#print(name, value)
self.coeffn[name] = float(value)
self.updateCanvas()
def load(self):
f = filedialog.askopenfile(mode='r', **self.file_opt)
if f:
self.readCoeff(f)
def save(self):
f = filedialog.asksaveasfile(mode='w', **self.file_opt)
if f:
self.writeCoeff(f)
else:
print(f)
def readCoeff(self, f):
for line in f:
line = line.split('#')[0]
if line.startswith('a') or line.startswith('b') or line.startswith('c') or line.startswith('g'):
name, value = line.split('=')
if name in self.coeff:
name, value = name.strip(), value.strip()
self.sliders[name].set(float(value))
def writeCoeff(self, f):
f.write('restitution = 0.1\n')
f.write('tread = 0.25\n')
f.write('rolling-resistance = 1.3e-2, 6.5e-6\n')
f.write('# Lateral force\n')
for n in coeff_fy:
f.write('{0}={1:f}\n'.format(n, self.coeff[n]))
f.write('# Longitudinal force\n')
for n in coeff_fx:
f.write('{0}={1:f}\n'.format(n, self.coeff[n]))
f.write('# Aligning moment\n')
for n in coeff_mz:
f.write('{0}={1:f}\n'.format(n, self.coeff[n]))
f.write('# Combined\n')
for n in coeff_fxy:
f.write('{0}={1:f}\n'.format(n, self.coeff[n]))
def sampleData(self, coeff):
scale = 0.5 * self.canvas_size
scalea = scale / self.slip_angle_max
scales = scale / self.slip_max
scalef = 0.5 * scale
slip_angle_scale = 2.0 * self.slip_angle_max / self.samples
slip_scale = 2.0 * self.slip_max / self.samples
camber = self.coeff['Camber']
sa = self.coeff['aos'] / 180.0 * pi
fz = self.coeff['Fz']
rfz = 1 / fz
px = PacejkaFx(coeff, fz)
py = PacejkaFy(coeff, camber, fz)
pz = PacejkaMz(coeff, camber, fz)
fyp = Pacejka(py, sa / pi * 180.0)
fyn = Pacejka(py, -sa / pi * 180.0)
afx, afy, amz, acp, acn = [], [], [], [], []
for i in range(-self.samples // 2, self.samples // 2, 1):
s = i * slip_scale
a = i * slip_angle_scale
fx = Pacejka(px, s * 100)
fy = Pacejka(py, a)
mz = Pacejka(pz, a)
gx = PacejkaGx(coeff, s, sa)
gy = PacejkaGy(coeff, s, sa)
mux = gx * 0.001 * fx * rfz
muyp = gy * 0.001 * fyp * rfz
muyn = gy * 0.001 * fyn * rfz
afx.append((scale + s * scales, (2 - 0.001 * fx * rfz) * scalef))
afy.append((scale + a * scalea, (2 - 0.001 * fy * rfz) * scalef))
amz.append((scale + a * scalea, (2 - 0.01 * mz * rfz) * scalef))
acp.append(((2 - mux) * scalef, (2 - muyp) * scalef))
acn.append(((2 - mux) * scalef, (2 - muyn) * scalef))
return afx, afy, amz, acp, acn
def sampleDataRef(self, coeff):
slip_angle_max = self.slip_angle_max / 180.0 * pi
scale = 0.5 * self.canvas_size
scalea = scale / slip_angle_max
scales = scale / self.slip_max
scalef = 0.5 * scale
slip_angle_scale = 2.0 * slip_angle_max / self.samples
slip_scale = 2.0 * self.slip_max / self.samples
camber = -self.coeff['Camber'] / 180.0 * pi
sa = self.coeff['aos'] / 180.0 * pi
fz = self.coeff['Fz'] * 1000
dfz = PacejkadFz0(coeff, fz)
fyp, dyp, bcyp, shfp = PacejkaFy0(coeff, sa, camber, fz, dfz)
fyn, dyn, bcyn, shfn = PacejkaFy0(coeff, -sa, camber, fz, dfz)
afx, afy, amz, acp, acn = [], [], [], [], []
for i in range(-self.samples // 2, self.samples // 2, 1):
s = i * slip_scale
a = i * slip_angle_scale
fx = PacejkaFx0(coeff, s, fz, dfz)
fy, dy, bcy, shf = PacejkaFy0(coeff, a, camber, fz, dfz)