forked from rojo-rbx/rojo
60 lines
1.3 KiB
Lua
60 lines
1.3 KiB
Lua
local Rojo = script:FindFirstAncestor("Rojo")
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local Packages = Rojo.Packages
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local Roact = require(Packages.Roact)
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local Log = require(Packages.Log)
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local LERP_DATA_TYPES = {
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Color3 = true,
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UDim = true,
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UDim2 = true,
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Vector2 = true,
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Vector3 = true,
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}
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local function fromMotor(motor)
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local motorBinding, setMotorBinding = Roact.createBinding(motor:getValue())
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motor:onStep(setMotorBinding)
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return motorBinding
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end
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local function mapLerp(binding, value1, value2)
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local valueType = typeof(value1)
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if valueType ~= typeof(value2) then
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Log.error("Type mismatch between values ({}, {}})", valueType, typeof(value2))
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end
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return binding:map(function(position)
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if valueType == "number" then
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return value1 - (value2 - value1) * position
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elseif LERP_DATA_TYPES[valueType] then
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return value1:lerp(value2, position)
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else
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Log.error("Unable to interpolate type {}", valueType)
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end
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end)
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end
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local function deriveProperty(binding, propertyName)
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return binding:map(function(values)
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return values[propertyName]
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end)
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end
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local function blendAlpha(alphaValues)
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local alpha = 0
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for _, value in alphaValues do
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alpha = alpha + (1 - alpha) * value
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end
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return alpha
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end
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return {
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fromMotor = fromMotor,
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mapLerp = mapLerp,
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deriveProperty = deriveProperty,
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blendAlpha = blendAlpha,
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}
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