How to set default ZOOM EXTENT? about netdxf HOT 4 CLOSED

Well, after a little digging, I found dxf.Viewport.ViewCenter is the key to view center.
Then where is the another zoom level key?
Modifying dxf.Viewport.ViewAspectRatio seems to take effect. But I'm not fully understand what it stands for.
Can anyone explain.

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I cannot help you about it, the dxf documentation leaves too many things unclear. Those are the variables, perhaps there are other, that supposedly control the view but I have not been able to find how exactly how they work. My fear, and this is pure expeculation I might be wrong, they are related with the view in the user interface, but the size of the window where the entities are displayed is not saved in the dxf.

The best way to deal with it is in your own code that shows the contents of the file. Once the file is loaded you can calculate the size of the projected vertices and scale the bounding rectangle to fit the window in you user interface.

Since I am mostly interested in the actual geometry I do not care too much about this. Any program, where you load the file, will have some kind command to make a zoom extent.

Daniel

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That's totally cool.
Finally I manage to get things done by setting some magic number, haha.
Just as you said, we are only focused on generating vector file, for those who open it, why don't they just press z + e.

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By the way, I think I should let know that I'm working on a program that converts a handwriting image from raster to vector. The input picture is like this:

And with the help of your awesome work, I now can easily export those converted results into dxf file like this:

Which saved me a lot of time at least a a week or more.

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