Module lib.tools.linearfunction

Linear function tools

# Distributed under Pycameresp License
# Copyright (c) 2023 Remi BERTHOLET
""" Linear function tools """

def get_linear(x1, y1, x2, y2, offset=1000):
        """ Return a and b for ax+b of two points x1,y1 and x2,y2 """
        # If two points distincts
        if x1 != x2:
                # Compute the slope of line
                a = (((y1 - y2)) *offset) // (x1 - x2)
                b = y1*offset - a*x1
        else:
                a = 0
                b = 0
        return a,b,offset

def get_fx(x, linear):
        """ Return the y value of function x """
        a,b,offset = linear
        y = ((a * x) + b)//offset
        return y

def get_fy(y, linear):
        """ Return the x value of function y """
        a,b,offset = linear
        x = ((y*offset) -b)//a
        return x

Functions

def get_fx(x, linear)

Return the y value of function x

Expand source code

def get_fx(x, linear):
        """ Return the y value of function x """
        a,b,offset = linear
        y = ((a * x) + b)//offset
        return y

def get_fy(y, linear)

Return the x value of function y

Expand source code

def get_fy(y, linear):
        """ Return the x value of function y """
        a,b,offset = linear
        x = ((y*offset) -b)//a
        return x

def get_linear(x1, y1, x2, y2, offset=1000)

Return a and b for ax+b of two points x1,y1 and x2,y2

Expand source code

def get_linear(x1, y1, x2, y2, offset=1000):
        """ Return a and b for ax+b of two points x1,y1 and x2,y2 """
        # If two points distincts
        if x1 != x2:
                # Compute the slope of line
                a = (((y1 - y2)) *offset) // (x1 - x2)
                b = y1*offset - a*x1
        else:
                a = 0
                b = 0
        return a,b,offset