The ArchShape is a useful parametric shape for making doorways and windows. It is open by default to allow easy use as a plan for a molding sweep using PlanSweep. If you close it, you can use it as a subtraction shape in a ShapeMerger to cut a window opening out of a wall or feed it into a Repeater2D to cut an array of window holes.
adius or the arc. This parameter also controls the width of the arch.
The vertical height of the point from which the arch springs.
The number of segments to complete the 180 degree arc of the arch.