UDim2 - FOR ANDROID
Roblox Style UDim2's for Corona SDK / Solar2D SDK

Scale = percent of screen represented as 0-1 Offset = Screen INCHES

UDim2.new ( number xScale, number xOffset, number yScale, number yOffset )

Construct a new UDim2
xScale and yScale are both 0-1 values representing 0 - 100% of the screen
xOffset and yOffset are in terms of screen INCHES
returns UDim2 Object

UDim2:fromScale(xScale, yScale)

Construct a new UDim2
Based on percent screen
equivalent to UDim2.new(xScale, 0, yScale, 0)
returns UDim2 Object

UDim2:fromOffset ( number xOffset, number yOffset )

Construct a new UDim2
Based on percent INCHES
equivalent to UDim2.new(0, xOffset, 0, yOffset)
returns UDim2 Object

Properties

UDim2.x - The x dimension scale and offset
UDim2.y - The y dimension scale and offset

UDim2 UDim2:Lerp ( UDim2 goal, number alpha )

Returns a UDim2 interpolated linearly between this UDim2 and the given goal. The alpha value should be a number between 0 and 1.

Math Operations

UDim2 = UDim2 + UDim2
UDim2 = UDim2 - UDim2