We have a project has completed most of the work, but need to do some work to complete.
1. Add Windows and Doors on to the wall, and edit, move, remove it. ( there are some 3d models for testing )
2. Create 3D wall transform from 2D in realtime.
3. Save floor, walls, windows, doors and so on, all together can be restore from *.xml file.
4. Snap Treshold ( for example, 1cm snap, 2cm snap, etc )
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