SDF Cross

Inputs
float SideLength | default 0.5
float ArmThickness | default 0.2
float InnerCornerRadius | default 0.1
Behaviour
Outputs the signed distance field for a Cross. Sidelength defines the arms length and the bounding rectangles size. ArmThickenss determines the width of the arms, whilst InnerCornerRadius controls the radii of the corners where the two arms of the cross connect.
