236 lines
4.4 KiB
Python
236 lines
4.4 KiB
Python
# ported from http://www.gizma.com/easing/ to https://gist.github.com/th0ma5w/9883420
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# added some from https://gist.github.com/cleure/e5ba94f94e828a3f5466
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# added some from http://gsgd.co.uk/sandbox/jquery/easing/jquery.easing.1.3.js
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import math
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def easeLinear(t, b, c, d):
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return c*t/d + b
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def easeOutCubic(t, b, c, d):
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t = float(t)/d-1
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return c*((t)*t*t + 1) + b
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def easeInCubic(t, b, c, d):
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t = float(t)/d
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return c*(t)*t*t + b
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def easeInQuad(t, b, c, d):
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t /= d
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return c*t*t + b
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def easeOutQuad(t, b, c, d):
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t /= d
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return -c * t*(t-2) + b
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def easeInOutQuad(t, b, c, d):
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t /= d/2
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if t < 1:
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return c/2*t*t + b
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t -= 1
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return -c/2 * (t*(t-2) - 1) + b
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def easeInOutCubic(t, b, c, d):
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t /= d/2
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if t < 1:
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return c/2*t*t*t + b
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t -= 2
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return c/2*(t*t*t + 2) + b
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def easeInQuart(t, b, c, d):
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t /= d
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return c*t*t*t*t + b
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def easeOutQuart(t, b, c, d):
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t /= d
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t -= 1
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return -c * (t*t*t*t - 1) + b
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def easeInOutQuart(t, b, c, d):
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t /= d/2
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if t < 1:
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return c/2*t*t*t*t + b
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t -= 2
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return -c/2 * (t*t*t*t - 2) + b
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def easeInQuint(t, b, c, d):
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t /= d
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return c*t*t*t*t*t + b
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def easeOutQuint(t, b, c, d):
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t /= d
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t -= 1
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return c*(t*t*t*t*t + 1) + b
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def easeInOutQuint(t, b, c, d):
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t /= d/2
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if t < 1:
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return c/2*t*t*t*t*t + b
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t -= 2
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return c/2*(t*t*t*t*t + 2) + b
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def easeInSine(t, b, c, d):
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return -c * math.cos(t/d * (math.pi/2)) + c + b
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def easeOutSine(t, b, c, d):
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return c * math.sin(t/d * (math.pi/2)) + b
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def easeInOutSine(t, b, c, d):
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return -c/2 * (math.cos(math.pi*t/d) - 1) + b
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def easeInExpo(t, b, c, d):
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return c * math.pow(2, 10 * (t/d - 1)) + b
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def easeOutExpo(t, b, c, d):
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return c * (-math.pow(2, -10 * t/d) + 1) + b
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def easeInOutExpo(t, b, c, d):
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t /= d/2
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if t < 1:
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return c/2 * math.pow(2, 10 * (t - 1)) + b
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t -= 1
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return c/2 * (-math.pow(2, -10 * t) + 2) + b
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def easeInCirc(t, b, c, d):
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t /= d
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return -c * (math.sqrt(1 - t*t) - 1) + b
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def easeOutCirc(t, b, c, d):
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t /= d
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t -= 1
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return c * math.sqrt(1 - t*t) + b
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def easeInOutCirc(t, b, c, d):
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t /= d/2
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if t < 1:
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return -c/2 * (math.sqrt(1 - t*t) - 1) + b
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t -= 2
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return c/2 * (math.sqrt(1 - t*t) + 1) + b
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def easeInElastic(t, b, c, d, s=1.70158):
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a = c
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if t == 0:
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return b
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t /= d
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if t == 1:
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return b + c
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p = d * 0.3
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if a < abs(c):
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a = c
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s = p / 4
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else:
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s = p / (2 * math.pi) * math.asin(c / a)
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t -= 1
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return -(a * pow(2, 10 * t) * math.sin((t * d - s) * (2 * math.pi) / p)) + b
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def easeOutElastic(t, b, c, d, a=1.70158):
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if t == 0:
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return b
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t /= d
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if t == 1:
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return b + c
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p = d * 0.3
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if a < abs(c):
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a, s = c, p / 4
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else:
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s = p / (2 * math.pi) * math.asin(c / a)
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return a * pow(2, -10 * t) * math.sin((t * d - s) * (2 * math.pi) / p) + c + b
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def easeInOutElastic(t, b, c, d, a=1.70158):
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if t == 0:
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return b
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t /= (d / 2)
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if t == 2:
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return b + c
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p = d * (0.3 * 1.5)
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if a < abs(c):
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a, s = c, p / 4
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else:
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s = p / (2 * math.pi) * math.asin(c / a)
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if t < 1:
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t -= 1
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return -0.5 * (a * pow(2, 10 * t) * math.sin((t * d - s) * (2 * math.pi) / p)) + b
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t -= 1
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return a * pow(2, -10 * t) * math.sin((t * d - s) * (2 * math.pi) / p) * 0.5 + c + b
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def easeInBack(t, b, c, d, s=1.70158):
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t /= d
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return c * t * t * ((s + 1) * t - s) + b
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def easeOutBack(t, b, c, d, s=1.70158):
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t = t / d - 1
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return c * (t * t * ((s + 1) * t + s) + 1) + b
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def easeInOutBack(t, b, c, d, s=1.70158):
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t /= d / 2
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s *= 1.525
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if t < 1:
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return c / 2 * (t * t * ((s + 1) * t - s)) + b
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t -= 2
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return c/2 * (t * t * ((s + 1) * t + s) + 2) + b
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def easeInBounce(t, b, c, d):
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return c - easeOutBounce(d-t, 0, c, d) + b
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def easeOutBounce(t, b, c, d):
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t /= d
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if t < (1/2.75):
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return c*(7.5625*t*t) + b
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elif t < (2/2.75):
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t -= (1.5/2.75)
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return c*(7.5625*t*t + 0.75) + b
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elif t < (2.5/2.75):
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t -= (2.25/2.75)
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return c*(7.5625*t*t + 0.9375) + b
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else:
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t -= (2.625/2.75)
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return c*(7.5625*t*t + 0.984375) + b
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def easeInOutBounce(t, b, c, d):
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if t < d/2:
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return easeInBounce(t*2, 0, c, d) * .5 + b
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return easeOutBounce(t*2-d, 0, c, d) * .5 + c*.5 + b
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