38 lines
591 B
Lua
38 lines
591 B
Lua
local self = {}
|
|
|
|
local easelib = require 'easelib'
|
|
|
|
function self.mixEase(e1, e2, point)
|
|
if not point then point = 0.5 end
|
|
|
|
return function(a)
|
|
if a < point then
|
|
return e1(a / point) * point
|
|
else
|
|
return e2((a - point) / (1 - point)) * (1 - point) + point
|
|
end
|
|
end
|
|
end
|
|
|
|
self.eases = {}
|
|
for i,v in pairs(easelib) do
|
|
local min = 0
|
|
|
|
local q = 10
|
|
for i = 0, q do
|
|
local s = v[2](i / q)
|
|
if s < 0 then min = -1 end
|
|
end
|
|
|
|
self.eases[v[1]] = {
|
|
f = v[2],
|
|
max = 1,
|
|
min = min,
|
|
i = i
|
|
}
|
|
end
|
|
|
|
self.ease = nil
|
|
self.minEase = false
|
|
|
|
return self |