Arch: Reflected Ceiling Plan

Reflected Ceiling Plans (RCP) are an important item of an architecture project. It is a plan view of a floor plan, conventionally seen from above like a normal floor plan, but that shows the ceiling instead of the floor. So that celiing plan is not just a projection of what is seen above the cut plane, it is also reflected (X and Y dimensions are inverted) so it fits on the floor plan, walls are at the same location.

(image from [OpeningDesign](https://github.com/OpeningDesign/CTR/blob/8bd6f2a27715c863ff729457a2dc433de75b5005/Most%20Current%20Set/Full%20size%20sheets/A421-A%20-%20RCP%20PLANS%20-%201ST%20FLOOR%20EAST%20SIDE.pdf))

Making such a RCP plan is already easily doable by:

1. Creating a Shape2DView
2. Creating a Clone of that Shape2DView
3. Setting the scaling of the clone to (-1, -1, -1)

Only there should be a more automatic system, such as a "Reflected" property for shape2DViews, that should do that for you.

Issue imported from https://tracker.freecad.org/view.php?id=3237

* **Reporter:** Kunda1
* **Date submitted:** 11/4/2017
* **FreeCAD version:**
* **Category:** Feature
* **Status:** assigned
* **Tags:**

# Original report text

Per http://yorik.uncreated.net/guestblog.php?2017=414

# Other bug information

* **Priority:** normal
* **Severity:** minor
* **Category:** Feature
* **Updated:** 2/6/2021