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myWidgets.py
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# Shah, Chirag H.
# 2019-04-30
import math
import tkinter as tk
from tkinter import simpledialog
from tkinter import filedialog
#----------------------------------------------------------------------
from ModelData import ModelData
from constructTransform import constructTransform
#----------------------------------------------------------------------
class cl_widgets :
def __init__( self, ob_root_window, ob_world = [] ) :
self.ob_root_window = ob_root_window
self.ob_world = ob_world
self.m_ModelData = None
self.isClipped = tk.BooleanVar()
self.isClipped.set( False )
self.isPerspective = tk.BooleanVar()
self.isPerspective.set( False )
self.m_distance = 1.0
self.isEuler = tk.BooleanVar()
self.isEuler.set( False )
self.m_roll = 0.0
self.m_pitch = 0.0
self.m_yaw = 0.0
self.m_resolution = 4 #Least value setting it to 4.
self.menu = cl_menu( self )
self.toolbar = cl_toolbar( self )
self.statusBar_frame = cl_statusBar_frame( self.ob_root_window )
self.statusBar_frame.pack( side = tk.BOTTOM, fill = tk.X )
self.statusBar_frame.set( 'This is the status bar' )
self.ob_canvas_frame = cl_canvas_frame( self )
self.ob_world.add_canvas( self.ob_canvas_frame.canvas )
#----------------------------------------------------------------------
class cl_canvas_frame :
def __init__( self, master ) :
self.master = master
self.canvas = tk.Canvas(
master.ob_root_window, width=1, height=1, bg='thistle' )
self.canvas.pack( expand=tk.YES, fill=tk.BOTH )
self.canvas.bind( '<Configure>', self.canvas_resized_callback )
self.canvas.bind( '<Key>', self.key_callback )
self.canvas.bind( '<ButtonPress-1>', lambda e : self.btn_callback( 'LMB', 'press', e ) )
self.canvas.bind( '<ButtonRelease-1>', lambda e : self.btn_callback( 'LMB', 'release', e ) )
self.canvas.bind( '<B1-Motion>', lambda e : self.btn_callback( 'LMB', 'motion', e ) )
self.canvas.bind( '<ButtonPress-2>', lambda e : self.btn_callback( 'MMB', 'press', e ) )
self.canvas.bind( '<ButtonRelease-2>', lambda e : self.btn_callback( 'MMB', 'release', e ) )
self.canvas.bind( '<B2-Motion>', lambda e : self.btn_callback( 'MMB', 'motion', e ) )
self.canvas.bind( '<ButtonPress-3>', lambda e : self.btn_callback( 'RMB', 'press', e ) )
self.canvas.bind( '<ButtonRelease-3>', lambda e : self.btn_callback( 'RMB', 'release', e ) )
self.canvas.bind( '<B3-Motion>', lambda e : self.btn_callback( 'RMB', 'motion', e ) )
self.canvas.bind( '<Up>', lambda e : self.arrow_callback( 'Up', False, e ) )
self.canvas.bind( '<Down>', lambda e : self.arrow_callback( 'Down', False, e ) )
self.canvas.bind( '<Right>', lambda e : self.arrow_callback( 'Right', False, e ) )
self.canvas.bind( '<Left>', lambda e : self.arrow_callback( 'Left', False, e ) )
self.canvas.bind( '<Shift-Up>', lambda e : self.arrow_callback( 'Up', True, e ) )
self.canvas.bind( '<Shift-Down>', lambda e : self.arrow_callback( 'Down', True, e ) )
self.canvas.bind( '<Shift-Right>', lambda e : self.arrow_callback( 'Right', True, e ) )
self.canvas.bind( '<Shift-Left>', lambda e : self.arrow_callback( 'Left', True, e ) )
def arrow_callback( self, arrow, shift, event ) :
shiftValue = 'Shift-' if shift else ''
self.master.statusBar_frame.set( f'{shiftValue}{arrow} arrow pressed.' )
def btn_callback( self, btn, action, event ) :
if action == 'press' :
self.master.statusBar_frame.set( f'{btn} pressed. ({event.x}, {event.y})' )
self.x = event.x
self.y = event.y
self.canvas.focus_set()
elif action == 'release' :
self.master.statusBar_frame.set( f'{btn} released. ({event.x}, {event.y})' )
self.x = None
self.y = None
elif action == 'motion' :
self.master.statusBar_frame.set( f'{btn} dragged. ({event.x}, {event.y})' )
self.x = event.x
self.y = event.y
else :
self.master.statusBar_frame.set( f'Unknown {btn} action {action}.' )
def key_callback( self, event ) :
msg = f'{event.char!r} ({ord( event.char )})' \
if len( event.char ) > 0 else '<non-printing char>'
self.master.statusBar_frame.set(
f'{msg} pressed at ({event.x},{event.y})' )
def canvas_resized_callback( self, event ) :
self.canvas.config( width = event.width-4, height = event.height-4 )
self.master.statusBar_frame.pack( side = tk.BOTTOM, fill = tk.X )
self.master.statusBar_frame.set(
f'Canvas width, height ({self.canvas.cget( "width" )}, ' +
f'{self.canvas.cget( "height" )})' )
self.canvas.pack()
#----------------------------------------------------------------------
class cl_statusBar_frame( tk.Frame ) :
def __init__( self, master ) :
tk.Frame.__init__( self, master )
self.label = tk.Label( self, bd = 1, relief = tk.SUNKEN, anchor = tk.W )
self.label.pack( fill = tk.X )
def set( self, formatStr, *args ) :
self.label.config( text = 'Chirag Shah: ' + ( formatStr % args ) )
self.label.update_idletasks()
def clear( self ) :
self.label.config( text='' )
self.label.update_idletasks()
#----------------------------------------------------------------------
class cl_menu :
def __init__( self, master ) :
self.master = master
self.menu = tk.Menu( master.ob_root_window )
master.ob_root_window.config( menu = self.menu )
dummy = tk.Menu( self.menu )
self.menu.add_cascade( label = 'File', menu = dummy )
dummy.add_command( label = 'New', command = lambda : self.menu_callback( 'file>new' ) )
dummy.add_command( label = 'Open...', command = lambda : self.menu_callback( 'file>open' ) )
dummy.add_separator()
dummy.add_command( label = 'Exit', command = lambda : self.menu_callback( 'file>exit' ) )
dummy = tk.Menu( self.menu )
self.menu.add_cascade( label = 'Settings', menu = dummy )
#dummy.add_command( label = 'Item1', command = lambda : self.menu_callback( 'settings>item1' ) )
#dummy.add_command( label = 'Item2', command = lambda : self.menu_callback( 'settings>item2' ) )
dummy.add_checkbutton( label= 'Clip', variable = self.master.isClipped)
dummy.add_checkbutton( label= 'Perspective', variable = self.master.isPerspective)
dummy.add_checkbutton( label= 'Euler', variable = self.master.isEuler)
dummy = tk.Menu( self.menu )
self.menu.add_cascade( label = 'Help', menu = dummy )
dummy.add_command( label = 'About...', command = lambda : self.menu_callback( 'help>about' ) )
def menu_callback( self, which = None ) :
item = 'menu' if which is None else which
self.master.statusBar_frame.set( f'{item!r} callback' )
#----------------------------------------------------------------------
class cl_toolbar :
def __init__( self, master ) :
self.master = master
self.toolbar = tk.Frame( master.ob_root_window )
dummy = tk.Button( self.toolbar, text = 'Resolution', width = 12, command = self.resolution_callback )
dummy.pack( side = tk.LEFT, padx = 2, pady = 2 )
dummy = tk.Button( self.toolbar, text = 'Distance', width = 16, command = self.distance_callback )
dummy.pack( side = tk.LEFT, padx = 2, pady = 2 )
dummy = tk.Button( self.toolbar, text = 'φ', width = 4, command = lambda *args: self.angle_callback("roll") )
dummy.pack( side = tk.LEFT, padx = 2, pady = 2 )
dummy = tk.Button( self.toolbar, text = 'θ', width = 4, command = lambda *args: self.angle_callback("pitch") )
dummy.pack( side = tk.LEFT, padx = 2, pady = 2 )
dummy = tk.Button( self.toolbar, text = 'ψ', width = 4, command = lambda *args: self.angle_callback("yaw") )
dummy.pack( side = tk.LEFT, padx = 2, pady = 2 )
dummy = tk.Button( self.toolbar, text = 'Reset', width = 16, command = self.reset_callback )
dummy.pack( side = tk.LEFT, padx = 2, pady = 2 )
dummy = tk.Button( self.toolbar, text = 'Load', width = 16, command = self.load_callback )
dummy.pack( side = tk.LEFT, padx = 2, pady = 2 )
dummy = tk.Button( self.toolbar, text = 'Draw', width = 16, command = self.draw_callback )
dummy.pack( side = tk.LEFT, padx = 2, pady = 2 )
self.toolbar.pack( side = tk.TOP, fill = tk.X )
def distance_callback(self) :
f = simpledialog.askfloat( "Title", "Prompt?", initialvalue = self.master.m_distance, minvalue = 0.0 )
if f != None :
self.master.m_distance = f
print('Distance now set : ', self.master.m_distance )
#self.master.statusBar_frame.set( "Distance set to :" , self.master.m_distance )
self.master.statusBar_frame.set(f'Distance is now {self.master.m_distance}' )
else:
self.master.statusBar_frame.set( 'Distance set cancelled' )
def resolution_callback(self) :
f = simpledialog.askinteger( "Title", "Prompt?", initialvalue = self.master.m_resolution, minvalue = 4 )
if f != None :
self.master.m_resolution = f
print('Resolution now set : ', self.master.m_resolution )
self.master.statusBar_frame.set(f'Resolution is now {self.master.m_resolution}' )
else:
self.master.statusBar_frame.set( 'Resolution set cancelled' )
def angle_callback(self, angle) :
#print("Got angle :",angle)
if angle == "roll":
f = simpledialog.askfloat( "Title", "Prompt?", initialvalue = self.master.m_roll, minvalue = -360.0 )
if f != None :
self.master.m_roll = f
print('φ : ', self.master.m_roll )
self.master.statusBar_frame.set(f'φ : {self.master.m_roll}' )
else:
self.master.statusBar_frame.set( 'φ set cancelled' )
elif angle == "pitch":
f = simpledialog.askfloat( "Title", "Prompt?", initialvalue = self.master.m_pitch, minvalue = -360.0 )
if f != None :
self.master.m_pitch = f#Converting angles from degrees to radians.
print('θ : ', self.master.m_pitch )
self.master.statusBar_frame.set(f'θ: {self.master.m_pitch}' )
else:
self.master.statusBar_frame.set( 'θ set cancelled' )
elif angle == "yaw":
f = simpledialog.askfloat( "Title", "Prompt?", initialvalue = self.master.m_yaw, minvalue = -360.0 )
if f != None :
self.master.m_yaw = f#Converting angles from degrees to radians.
print('ψ : ', self.master.m_yaw )
self.master.statusBar_frame.set(f'ψ: {self.master.m_yaw}' )
else:
self.master.statusBar_frame.set( 'ψ set cancelled' )
else:
print("No angle received")
def reset_callback( self ) :
self.master.ob_world.reset()
self.master.statusBar_frame.set( 'Reset callback' )
def load_callback( self ) :
fName = tk.filedialog.askopenfilename( filetypes = [ ( "allfiles", "*" ) ] )
if ( len( fName ) == 0 ) :
self.master.statusBar_frame.set( "%s", "[Load was cancelled]" )
else :
self.master.m_ModelData = ModelData( fName )
print( f'---Load {fName!r}' )
#print( 'Window line :', self.master.m_ModelData.getWindow() )
#print( 'Viewport line :', self.master.m_ModelData.getViewport() )
#print( 'Bounding box :', self.master.m_ModelData.getBoundingBox() )
self.master.statusBar_frame.set( 'Load callback' )
def draw_callback( self ) :
#print("Got clipp value: ",self.master.isClipped.get())
if self.master.m_ModelData is None :
self.master.statusBar_frame.set( 'No model loaded.' )
return
width = int( self.master.ob_canvas_frame.canvas.cget( "width" ) )
height = int( self.master.ob_canvas_frame.canvas.cget( "height" ) )
w = self.master.m_ModelData.getWindow()
v = self.master.m_ModelData.getViewport()
( ax, ay, sx, sy ) = constructTransform( w, v, width, height )
self.master.m_ModelData.specifyTransform( ax, ay, sx, sy, self.master.m_distance )
#tx,ty,tz = self.master.m_ModelData.getCenter()
#Converting angles from degrees to radians.
self.master.m_ModelData.specifyEuler(math.radians(self.master.m_roll), math.radians(self.master.m_pitch), math.radians(self.master.m_yaw))
#print( '---Draw' )
#print( f'Canvas size : ({width}, {height})' )
#print( f'Transform : ax {ax:.3f} ay {ay:.3f} sx {sx:.3f} sy {sy:.3f}' )
self.master.ob_world.create_graphic_objects( self.master.ob_canvas_frame.canvas, self.master.m_ModelData, self.master.isClipped.get(), self.master.isPerspective.get(), self.master.isEuler.get(), self.master.m_resolution )
vxMin = v[0] * width
vxMax = v[2] * width
vyMin = v[1] * height
vyMax = v[3] * height
self.master.ob_canvas_frame.canvas.create_line(vxMin, vyMin, vxMin, vyMax, vxMax, vyMax, vxMax, vyMin, vxMin, vyMin )
self.master.statusBar_frame.set( 'Draw callback' )
degree = '\u00b0'
self.master.statusBar_frame.set(f'Resolution: {self.master.m_resolution} Distance : {self.master.m_distance} φ : {self.master.m_roll}{degree} θ: {self.master.m_pitch}{degree} ψ: {self.master.m_yaw}{degree} ' )
#----------------------------------------------------------------------