Viewports not lining up from different scenes (same scale)

sonder

@unknownuser said:

The key is saving your scenes in Sketchup so they are identical in orientation, otherwise they will not align in LO.

Sonder, that's is the main question - why the vector viewport is jumping when everything is saved (scenes with all checkboxes, file, model reference updated etc)
I think the best illustration will be a short video

So your issue is alignment in Sketchup scenes. You need to make sure the scenes are "stacked" exactly in order for them to work in LO without having to manually move things around in LO.

I use templates now where the scenes are already created making the setup really easy on every project. If I were starting from scratch, using a floor plan as an example, I would first create the base scene that I want to raster image which is most of the floor plan layers on, except the line work. Once you have everything visible you want to see, update the scene. To create the next scene that is going to show linework only, start with the floor plan scene, toggle off all your layers except those you want to vector render. Then create a new scene. Doing this process ensures the two scenes have the exact same alignment.

You can test the alignment issue by simply clicking through the scenes in SU. If the model jumps around, it will do the same thing in LO.

I talk about it here at the 4:00 mark:
https://www.youtube.com/watch?v=jK8lusVdHTQ

vapross

@unknownuser said:

You can test the alignment issue by simply clicking through the scenes in SU. If the model jumps around, it will do the same thing in LO.

I talk about it here at the 4:00 mark:
https://www.youtube.com/watch?v=jK8lusVdHTQ

Sonder, thank you for the answer

Here is the video where I perform the entire process - https://www.dropbox.com/s/h05n6f0bzv53dlb/SU-LO%20jumping%20issue%202015-07-14%2008-04-09-240.avi?dl=0

I do think this is the bug, maybe caused by photomatched scenes. Although I tried a stacking (actually it was yours) method for the first time - before it I have being considering it as mauvais ton.

By the way, thank you for your techniques, they are inspiring!

vapross

I tested other models without photomatch scenes - the same issue. Switching from raster to vector leads to kinda "zoomed" view. So "jumping" is not a correct word - it's certainly "zoomed"

It's like something went "broken" - never noticed this bug

pbacot

I know in SU the photomatch scene is special and you can't really replicate it. The perspective you set up has it's own special camera settings. No clue why vector views in LO would be the cause of this. I bet this is a rare operation. The testers probably never even tried this use of Photomatch.

That said, this discussion started with problems using scaled scenes in LO with parallel projection, which is not a setting photomatch uses.

JQL

Use thomthom camera tools to update cameras. Match photo introduces a frame ratio that reads differently in some scenarios.

Yu can replicate a camera from a photomatch scene in another scene by using advanced scene settings in window>scenes:

1-untick "camera position" in the incorrect scene;
2-double click the ,atch photo scene;
3-click once in the incorrect scene name;
4-tick "camera position" back on and te incorrect scene inherits the match photo "scene position"

hope this helps

vapross

@pbacot said:

The testers probably never even tried this use of Photomatch.

This kind of wireframe mass-models is typical for visual analysis - I use SU for this purpose

vapross

@jql said:

Use thomthom camera tools to update cameras. Match photo introduces a frame ratio that reads differently in some scenarios.

Thank you for this tip. However there are no issues with raster view with Photomatch scenes and only vector one becomes zoomed.
Actually, I tested other models without Photomatch scenes at all - the same issue, vector becomes zoomed
Maybe I should report a bug

vapross

When I switch to ortho scenes, vector viewports perform normally, and here we have the composing approach.
Guys, can you try the same operation with generic perspective scenes?

pbacot

I just mean the photomatch and LO overlay use. I think the usual use is to create a model from the photo. What it has to do with wireframe and needing to overlay scenes IDK, but I still think this would be a scenario they didn't think of testing, all the way into the overlay in LO. So they wouldn't find this deficiency (can't say if it's a bug-- probably just something the program doesn't do).

I wanted to try it out, but I can't follow what the steps you use are.

JQL

I get no zoom factor when changing a perspective viewport from Raster to Vector or Hybrid.

Why don't you share a model here?

vapross

Oops, missed your answers here.
I tested once again with generic perspectives and vector view, and now it's ok. However, the photomatch scenes keep on zooming with vectorview in LO - i think it depends on the distortion of axis when photomatching (some scenes have wide FOV). Well, got to test it further, because it would be a really time saving method (even now).
Here is the model (SU - https://www.dropbox.com/s/joxh1d9y97qqb92/3047-site_2015-07-11-v3.skp?dl=0 (soon will be removed)