importing imprecisely drawn dwg/dxf into sketchup
My workflow for developing energy models starts with creating a line drawing in AutoCAD from the plans that includes only those features which will have a significant impact on the energy performance results. I typically snap to a 1' grid to avoid too many small surfaces and/or small gaps or overlaps.
Anyhow, I had a colleague helping me out who did not quite understand the importance of precision in this whole process (definitely a failure on my part). So now I have a very large complex building outlined with an indeterminate number of slight offsets at the vertices.
Does anyone have a clever method/extension to extrude or modify these line drawing in Sketchup without creating a bunch of super small spaces and/or gaps? or perhaps some way to edit the drawings in AutoCAD? or a measure to modify the osm directly? I am open to anything that is even marginally less annoying than looking at all vertices or redrawing the outlines from scratch.
and on the topic of tolerance and precision. i frequently get really small numbers ( x 10^-15) instead of 0 in the coordinate values for geometry objects in my osm files. is there a measure to round all of these to 0? i realize this probably happens somewhere along the line in the simulation but it makes manipulating the osm kind of annoying sometimes.
Precision problem you describe is a known issue that has been around a while, we don't have an easy fix for it.