Background disappears when its origin is out of view

Question

question

Patrick Cloutier asked Nov 25 2021 at 8:54 PM Phil BoBo edited Nov 29 2021 at 6:23 PM

Background disappears when its origin is out of view

If have a model in millimeters. If I import a cad background in meters, I have to set it x and y size to 1000 to convert the size. That works.

But now the background disappears whenever I pan and its origin gets out of view.

I recreated the problem in a blank model with the default ER_small CAD file and it does the same. See attached model.

ScalingProblem.fsm

Software Version:

FlexSim 21.2.4

model background

scalingproblem.fsm (275.7 KiB)

· 3

Joerg Vogel commented · Nov 26 2021 at 4:29 AM

EDIT:~~I think it is a feature and not a problem. Perhaps you get around if you deactivate perspective view option.~~

You are right.

0 ·

background-image-disapear-on-windows-border.gif (2.3 MiB)

Patrick Cloutier Joerg Vogel commented · Nov 26 2021 at 1:38 PM

Have you tried the model I attached? You can't even zoom in without the layout disappearing. It is a problem. I will try what you suggest.

0 ·

Patrick Cloutier commented · Nov 26 2021 at 3:01 PM

It only does it when the model units are mm and you have to scale the layout. I am reusing an old model so I can't change the model units. I solved it by scaling the new CAD beforehand in AutoCAD. So problem solved. But it sure looks like a bug.

0 ·

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Answer 1 · 2021-11-29T18:20:15Z

Phil BoBo answered Nov 29 2021 at 6:20 PM Phil BoBo edited Nov 29 2021 at 6:23 PM

"The drawing's scale factors affect the view culling of the DWG renderer.

If the scaling is uniform across the X, Y and Z axes then the drawing should not clip inappropriately when the view is rotated or zoomed.

If you need non-uniform scaling, rescale the drawing in AutoCAD."

From: Importing CAD Drawings and Floor Plans (flexsim.com)

If you change the Z scaling in your sample model to match your X and Y scaling, then this view culling issue is resolved.

1638210004094.png (19.5 KiB)

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