#!/usr/bin/env python
#Animation library for XBMC
from time import sleep
def linear(control,x1,y1,x2,y2,speed):
    if (x2 - x1):
        m = (y2 - y1)/float((x2 - x1))
        b = y1 - (m * x1)
    else:
        m = 0
    x = x1
    y = y1
    if m:
        while x <= x2 + speed:
            y = (m * x) + b
            control.setPosition(x,y)
            x += speed
            sleep(0.08)
    else:
        while y <= y2 + speed:
            control.setPosition(x,y)
            y += speed
            sleep(0.08)
def bezier(control,x1,y1,x2,y2,x3,y3,x4,y4,s):
    s = 1/float(s)
    cx = 3 * (x2 - x1)
    bx = 3 * (x3 - x2) - cx
    ax = x4 - x1 - cx - bx
    cy = 3 * (y2 - y1)
    by = 3 * (y3 - y2) - cy
    ay = y4 - y1 - cy - by 
    i = 0
    while i <= 1 + s:
        i2 = i * i
        i3 = i * i * i
        x = (ax * i3) + (bx * i2) + (cx * i) + x1
        y = (ay * i3) + (by * i2) + (cy * i) + y1
        control.setPosition(int(x),int(y))
        i += s
        sleep(0.08)