Resolution of arcs in Block View

copter · June 18, 2009, 09:09:30 AM

Hello,

I attached one sreen shot including a control DWGPreview and one with a control BlockView.
We can see a very bad resolution for arcs on the 2nd screen shot. Is it possible to increase the resolution ?
Or maybe something is wrong in the dwg ? ... (attached)
Thanks for your help.
Copter

Fred Tomke · June 18, 2009, 11:53:37 AM

Hi, copter,

I don't believe that it is a matter of dwg.

Try another setting of rendermode of the blockview.
Disable hardware acceleration (I don't know the english word for it) in the _3dconfig command.

Both ways end up with better results for me.

Fred

copter · June 18, 2009, 01:47:35 PM

Hi Fred

I tried all the render modes: Result is the same.

I changed few parameters in 3DConfig without any changes.

Copter

Fred Tomke · June 18, 2009, 10:56:27 PM

Hm, quite interesting. I tried your block in 2 different AutoCAD releases: DWG-Preview gives the same result in both releases. But the blockview result looks much better in Map 2010 as in Civil 2009... Which AutoCAD release are you using?

Fred

[EDIT] The last screenshot shows the new driver "Autodesk" of Map 2010 - maybe it's the key?

copter · June 19, 2009, 07:00:29 AM

Hi Fred
My previous screen shots was under R2009 single.
I tried under R2010. (Image attached) Things are better but not the best that I could hope.
I changed settings in 3DConfig, under R2009 and R2010, but without any effect.
Monday, I will make some new test on others workstations.
I am using blockview rather than dwgpreview because the blocks are part of a big librairy where dwg files are modified with ObjectDBX, and, du to the ObjectDBX 'saveas method, the preview is lost...

Copter

Amsterdamned · June 22, 2009, 02:12:10 AM

Hi,

If this would be in the dwg itself i would say, try the viewres sysvar. set it higher. But i don't know if that helps in a preview as well....

Bernd

copter · June 22, 2009, 02:39:44 AM

OK
I made several investigations on different work stations, I can understand now what happens.
The resolution depends on the zoom factor of the current drawing.
I am not speaking about the block but the drawing where you launch the form.
There is nothing to see with the 3D configs options, Civil3D or not, driver X or Y ...
The 2 following screen shots have been done on the same drawing:
The 1st one with a zoom extend, the 2nd one with a 20xp zoom. (Anywhere on the drawing)

I thing that is likely a bug, because the display of a block view should not depend of the current zoom of the drawing...
Any suggestions ?
Copter

Amsterdamned · June 22, 2009, 03:07:42 AM

did you try viewres?

BazzaCAD · June 22, 2009, 11:10:56 AM

Quote from: copter on June 22, 2009, 02:39:44 AM
OK
I made several investigations on different work stations, I can understand now what happens.
The resolution depends on the zoom factor of the current drawing.
I am not speaking about the block but the drawing where you launch the form.
There is nothing to see with the 3D configs options, Civil3D or not, driver X or Y ...
The 2 following screen shots have been done on the same drawing:
The 1st one with a zoom extend, the 2nd one with a 20xp zoom. (Anywhere on the drawing)

I thing that is likely a bug, because the display of a block view should not depend of the current zoom of the drawing...
Any suggestions ?
Copter

Can you post a small sample code showing this?

copter · June 23, 2009, 01:01:28 AM

In order to reproduce this behaviour:

- Open Test.dwg
- Load Test.lsp
- Type "Test"

(Tested with R2009,R2010 and Civil3D-2009)

Copter

owenwengerd · June 24, 2009, 08:01:54 AM

This should now be fixed for Beta 7.

For some reason, the block view code was using parameters from the active drawing viewport to initialize the block view control. I have removed that code and it now uses a standard plan view as the initial view. This appears to have fixed the tessellation problem in my tests.

copter · June 25, 2009, 07:26:07 AM

Thanks Owen
I thought that I was the only one to see the problem!
Copter

copter · September 05, 2009, 11:42:05 AM

Hello Owen

This is not yet fixed. (I tried with 5.1.1.3)
I attached again the test files.
When you will fixe it , would it be possible to update both 5.1 and 6.0 ?
Thanks for your help
Copter

owenwengerd · September 06, 2009, 06:51:22 PM

I am able to reproduce the problem in AutoCAD 2007, but I can't find any way to change the tesselation tolerance. Please report this as a bug so that I can revisit it in the future.