Difference in file size Autocad vs SU
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I have an Autocad file that has a size of 2 mb. If I import this into SU it creates a Skp file that is 10 mb. Is it supposed to be like this? If yes, can anyone explain why?
In this particular project I have 19 cadfiles (around 40 mb) and when I import these into SU, the total filesize is around 200 mb
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Hi, macka59n:
Obviously, the two programs do not see the geometry in the same way. For example, a circle or arc in Autocad is truly a curve with constant radius. Sketchup has to create the geometry as a sequence of straight line segments, where the vertices lie on the true circumference. (actually, the display engine in autocad uses a similar technique if you zoom real tight on curve geometry, but you cannot click on these segments as entities)
Another thing is that Autocad can tolerate significant file sizes before bogging down, which may be in the way the data is stored.
To minimize the problem, you obviously need to simplify the file you import. Multiple coincident lines in multiple layers are redundant data in Sketchup.
But you did not indicate if your Autocad file is 2D or 3D. -
This is pretty much the case with SU vs. any program I've worked with. SU file sizes are always much larger (and the save times are much slower which compounds the problem). I just trying to bring in a very high poly flower/vase combo yesterday. The 3ds Max file is 26mb (pretty big for a flower but manageable). After I was finally able to bring it into SU as a .dae file and reduced the texture size the SU file (containing ONLY the flower/vase) is 244 mb. Obviously that won't be going into my scene any time soon - you can imagine the save times.
-Brodie
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@mitcorb said:
Hi, macka59n:
Obviously, the two programs do not see the geometry in the same way. For example, a circle or arc in Autocad is truly a curve with constant radius. Sketchup has to create the geometry as a sequence of straight line segments, where the vertices lie on the true circumference. (actually, the display engine in autocad uses a similar technique if you zoom real tight on curve geometry, but you cannot click on these segments as entities)
Another thing is that Autocad can tolerate significant file sizes before bogging down, which may be in the way the data is stored.
To minimize the problem, you obviously need to simplify the file you import. Multiple coincident lines in multiple layers are redundant data in Sketchup.
But you did not indicate if your Autocad file is 2D or 3D.All of my cad files are in 3d and I´ve tried to simplify them as much as possible. I guess that large file sizes and SU goes hand in hand.
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@unknownuser said:
This is pretty much the case with SU vs. any program I've worked with. SU file sizes are always much larger (and the save times are much slower which compounds the problem). I just trying to bring in a very high poly flower/vase combo yesterday. The 3ds Max file is 26mb (pretty big for a flower but manageable). After I was finally able to bring it into SU as a .dae file and reduced the texture size the SU file (containing ONLY the flower/vase) is 244 mb. Obviously that won't be going into my scene any time soon - you can imagine the save times.
-Brodie
I agree in all that you are saying. A small file that takes a second or two to open in Autocad, takes more than a minute to load in SU. Imagine that this file is only max 5% of the finished drawing. This might give me a load time of 20 minutes.
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