Mapping_for_Tkinter

# Justin Diep
# 4-9-19

from tkinter import *

class Mapping_for_Tkinter:

    #Class methods
    def __init__(self,xmin,xmax,ymin,ymax,width):
        self.__xmin = xmin
        self.__xmax = xmax
        self.__ymin = ymin
        self.__ymax = ymax
        self.__width = width
        self.__height = int(self.__width * ((self.__ymax - self.__ymin) / (self.__xmax - self.__xmin)))

    #Setter methods
    def set_xmin(self, xmin):
        self.__xmin = xmin

    def set_xmax(self, xmax):
        self.__xmax = xmax

    def set_ymin(self, ymin):
        self.__ymin = ymin

    def set_ymax(self, ymax):
        self.__ymax = ymax

    #Getter methods
    def get_xmax(self):
        return self.__xmax

    def get_xmin(self):
        return self.__xmin
    
    def get_ymin(self):
        return self.__ymin

    def get_ymax(self):
        return self.__ymax

    def get_width(self):
        return self.__width

    def get_height(self):
        return self.__height

    def get_x(self,i):
        return self.get_xmin()+(i*(self.get_xmax()-self.get_xmin())/self.get_width())

    def get_y(self,j):
        return self.get_ymax()-(j*(self.get_ymax-self.get_ymin())/self.get_height)

    def get_i(self, x):
        return (self.get_width())/(self.get_xmax()-self.get_xmin())*(x-self.get_xmin())

    def get_j(self, y):
        return (self.get_height())/(self.get_ymax()-self.get_ymin())*(self.get_ymax()-y)

    #String
    def __str__(self):
        return "Mapping created between x=[" + str(self.__xmin) + "," + str(self.__xmax) + "] y=[" + str(self.__ymin) + "," + str(self.__ymax) + "] math => (" + str(self.__width) + "," + str(int(self.__height)) + ") tkinter"

def main():
    m=Mapping_for_Tkinter(-5.0,5.0,-5.0,5.0,500) # instantiate mapping
    print(m) # print info about object
    
    window = Tk() # instantiate a tkinter window
    canvas = Canvas(window, width=m.get_width(),height=m.get_height(),bg="white") # create a canvas width*height
    canvas.pack()
    # create rectangle the Tkinter way
    print("Draw rectangle using tkinter coordinates at (100,400) (400,100)")
    canvas.create_rectangle(100,400,400,100,outline="black")

    # create circle using the mapping
    print("Draw circle using math coordinates at center (0,0) with radius 3")
    canvas.create_oval(m.get_i(-3.0),m.get_j(-3.0),m.get_i(3.0),m.get_j(3.0),outline="blue")
    
    # create y=x line pixel by pixel using the mapping
    print("Draw line math equation y=x pixel by pixel using the mapping")
    for i in range(m.get_width()):
        x=m.get_x(i) # obtain the x coordinate
        y=x
        canvas.create_rectangle((m.get_i(x),m.get_j(y))*2,outline="green") 

    window.mainloop() # wait until the window is closed

#main()