Color separation of printed CAD sketches?

1. First import the CAD drawings into SU, and SU will automatically lower the drawings to the coordinate origin position. At this point, all lines of CAD will become the basic lines of SU.

2. Select the "Pencil" tool in the toolbar on the left of SU, and you can trace it on the CAD drawing. In the process of drawing, you mainly draw the wall lines of CAD.

3. After closing part of the wall line, you can see that the wall area in the middle of the wall line has extra color filling, that is, part of the tracing is completed.

4. With Sue's pencil, you can trace the lines of the interior and exterior walls, complete all tracing work, and delete some unnecessary lines.

5. After all the tracing work is completed, you can see that there are redundant color fills in the CAD drawing, which shows that the drawing of the surface has been completed.