Disappearing model in sim, when zooming by?

An easy way of setting the origin exactly where you like is to take a new object (I usually take a cube but that does not matter) with its own group.
Select the new group and edit the origin exactly where you like it through the properties window.
take your object whose origin you wanted to alter and move it to the new group.
Delete the new object leaving your object in the new group with the origin you entered.
This gives me better control than trying to use the Shift command.

Colleagues,

A little head scratcher I have encountered. I have an object that is disappearing from the view in the sim (RW) when viewed at certain angles. Does anybody know why this is happening?

I am building a normally large (z-axis 80m+ long) but fairly simple object. It exports and loads all fine, but when I rotate my camera to certain angles or when I get close to the model and rotate the camera to look alongside it, it disappears from view.

Has this happened to anybody before, and is there a fix / workaround for it?

Some model details (‘clump’ of houses)
– low poly, two single identical objects for night and day shaders
– no stencil shadows
– groups are normalized, pivot is at model’s center at y=0 and center of the (3DC) scene
– as I see it, I did nothing fancy or out of the order when building the model, it is only a bunch of textured cubes (merged into one object).

I also observed this happening with much smaller objects (which I did not build myself though).

The model does NOT disappear from the 3DC windows, by the way. It only happens in RW.

What could be wrong?

Thanks for your help!

Cheers!
Michael

It’s very simple.

If the pivot of an object is outside the FOV will be automatically deleted from the scene.

It’s and old Railsim problem that was mitigated in one of the 2 MK, but was never fixed at 100%.

Hi,

Thanks for your reply!

Bummer! So the only remedy right now would be to break up the object into smaller parts, each as child objects with their own pivots, I suppose?

Oh well. You live and learn. <!– s8-) –><img src="{SMILIES_PATH}/icon_cool.gif" alt="" title="Cool" /><!– s8-) –>

Cheers!
Michael

I has this same problem from a model that I am building. The ultimate cause was two piper objects (downspout gutters) that I had copied twice, given unique names, and then placed them on other parts of the model. Whenever I flew by the asset on the right side in the Asset Editor, the model would disappear. I went back into 3DC, removed the gutters, then rebuilt each one from scratch. From then on, I had no more problems.

Another question. I’m building a new model, and i’m noticing that it has started disappearing at certain angles in Railworks. When I look at it in 3DC, i’ve noticed that the pivot points for some objects are way out in space, as far as 50′ away! I’m not sure how the pivot points are getting out there, but it seems to be happening when i’m consolidating or grouping several different shapes.

How is this happening, how do I stop it from happening, and how do I fix the pivots that are out in space?

Moving an object into a Group maintains its world position but moves its origin to match that of the rest of the Group.

To stop it happening keep the object in its own group or sub-group folder.

To restore the object origin, restore it to its own folder then select the object and use the Shift Centre on Selection plug-in. Or move the origin manually using the Shift command in the right hand toolbar.