# plot_points_a2b.py

# plot_points_a2b.py

# from point A to point B

import math

def div(a,b):
    try: return a / b
    except: return 0

def plot(incr=25):
    x,y=[aX-bX,aY-bY]
    L=div(max(abs(x),abs(y)),incr*1.0)
    x,y=div(x,L)*-1,div(y,L)*-1
    for z in range(0,int(L)+1):
        print aX+(x*z), aY+(y*z)
    print

aX,aY=[600,640]
bX,bY=[1000,920]

plot()

aX,aY=[1000,640]
bX,bY=[600,920]

plot()

aX,aY=[600,920]
bX,bY=[1000,640]

plot()

aX,aY=[1000,920]
bX,bY=[600,640]

plot()