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disappearing elements


helmut

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hi,

from time to time we have issues with disappearing elements in viewports...

all the same on 4 different macs.

- we set up our design using 3D elements

- we change to a sheet layer

- we create a viewport in top/plan view

- first of all everything looks fine (today?s example was a small shop with exterior and interior walls and 5 columns showing within the viewport)

- we start zooming the sheet/viewport: just a little in and the first one of the columns is gone

- zooming a little further in and a second one has disappeared

- zooming in again and the third one is gone

- thus far 3 are hiding, 2 are still showing

- zooming out again, panning, etc etc: the missing ones don?t show up again

- plotting: the viewport stays incomplete

- exporting PDFs: the viewport stays incomplete

- changing back to design layers: all of the columns are still where they should be, they simply do not show up in the viewport correctly

we never encountered such strange behavior in 2D drawings, may they have had dozens of MBs;

but it can always happen even in comparatively small 3D files;

on our machines (3 year old imacs) solely within viewports -

but i saw similar things on a friend?s imac happen even when zooming design layers (in a very large file of about 80 MB).

graphics cards and drivers are of course native mac/OSX, there is nothing to change and nothing to update beyond the OS itself.

has anybody ever had similar experiences ?

thanks and greetings

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I am having similar problems especially when the viewport is rendered in OpenGL.

I don't know but I think it maybe something to do with video cards and OpenGL.

It behaves a lot better in wireframe which is why I think the video card/drivers maybe an issue.

As to a solution, I haven't found one, although restarting VW can help, and sometimes repair permissions seems to make a difference. Whether that should have anything to do with the problem I don't know but I feel your pain!

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thanks GWS.

restarting does not help in my case.

and, more important:

my viewport shows a top/plan view, which means 2D plan and no rendering at all.

i think you are right about it being a video/display/driver issue, because we had similar things happen when running VW2010;

the friend of mine with indeed very large files runs VW2009.

so this is definitely nothing new in 2011.

but what can one change or update when running imacs - besides keeping the OSX up to date...?

would it be worth trying to set up a testing machine with 10.6...?

i am in doubt.

i am going to test your permission repair thing next, no harm...

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I have seen something similar with other hybrid objects (sp: floors) disappearing from Sheet Layer VP's in Top/Plan view. In my case the objects can be made to reappear by double clicking (right clicking) the VP and navigating to the Design Layer in which these objects live. As soon as the design layer is active the objects are there, and when I return to the VP they remain. However they sometimes disappear again later. I have not been able to pin down what causes this....

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hi peter,

thanks,

i tried it your way and it activated the viewport and the respective design layer within, went out again and all my columns were back like predicted;

but afterwards i realized i had done something in addition:

i had changed the design layer?s projection direction, too: from an open-GL-rendered 3D to wireframe top/pan.

so i tested what toggling of the design layer projection (with unified view on) would cause; and this is what happened:

-- setting a 3D view for the design layer ---> the viewport display (on my sheet) became incomplete or at least instable when being zoomed

-- setting the design layer back to top/plan ---> the viewport display healed...

maybe the workaround would be to set design layers strictly to top/plan view before changing to sheet layers for checking the correctness of viewport displays and final plotting.

next question arising: is it simply the projection direction or have unified view, rendering (such as open GL) any influence...?

my oh my...

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I really don't have an answer, but have seen where OGL just doesn't render all the objects - I believe because the graphics card, memory or something is overloaded.

I would try this.

In the design layer, select all your columns and send to front, then send backwards until they are stacked as close to the front as possible.

In File>Document Preferences>Display uncheck Display Viewport Cache if selected.

When exporting as PDF change your Reset all Plug In Objects setting (on if off and off if on).

Something should work to prod it over the line.

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