Does layout not support hidden lines?

jhauswirth · 11 May 2011, 14:10

LO doesn't support the new hiddenline drawing in hybrid or vector.
It will only show them in raster. In hybrid mode it first renders
everything except edges (it turns off ALL edges) and then it
draws all visible edges as vector on top of the raster image.

bmike · 11 May 2011, 16:09

@jhauswirth said:

LO doesn't support the new hiddenline drawing in hybrid or vector.
It will only show them in raster. In hybrid mode it first renders
everything except edges (it turns off ALL edges) and then it
draws all visible edges as vector on top of the raster image.

Would be great to have it available in hybrid... but in my limited testing it would need some finesse on the software side.

I thought it might work to do 2 viewports, one in raster, another on top in vector, but I can't seem to get that to work - although I did think it possible to have 2 or more windows stacked atop one another with transparent backgrounds...

Dave R · 11 May 2011, 16:23

Well, you could do it with overlapping scenes. See the attached PDF. I made two scenes, one in simple Hidden Line style and the other with Back Edges turned on. I overlapped the two scenes in LO with them on separate layers. The Hidden Line view is rendered as Vector and the Back Edges scene in Raster.

To be honest, though. I don't see much point in doing this. The quality of the result isn't very good.

back edges test.pdf

bmike · 11 May 2011, 16:43

@dave r said:

Well, you could do it with overlapping scenes. See the attached PDF. I made two scenes, one in simple Hidden Line style and the other with Back Edges turned on. I overlapped the two scenes in LO with them on separate layers. The Hidden Line view is rendered as Vector and the Back Edges scene in Raster.

To be honest, though. I don't see much point in doing this. The quality of the result isn't very good.

Just figured that out by doing a similar test with something I'm working on. Only time it would make sense for me would be for complex joinery / shop drawings...

Dave R · 11 May 2011, 16:47

Out of curiosity, wouldn't just the Raster-rendered image work for that? Or, you could make a high res image export from SU and insert the image into LO. Of course you'd lose the automatic update if you edit the model but for a few images it might not be so bad.

bmike · 11 May 2011, 17:34

@dave r said:

Out of curiosity, wouldn't just the Raster-rendered image work for that? Or, you could make a high res image export from SU and insert the image into LO. Of course you'd lose the automatic update if you edit the model but for a few images it might not be so bad.

I guess the raster would be fine. But I have no idea in actual practice. I've only used vector for line heavy work, and hybrid for anything with color and shadows...

I've sent a few pages off to plot with the overlay and with just the raster. We'll see how they plot out.

Gaieus · 12 May 2011, 09:32

@jhauswirth said:

LO doesn't support the new hiddenline drawing in hybrid or vector.
It will only show them in raster. In hybrid mode it first renders
everything except edges (it turns off ALL edges) and then it
draws all visible edges as vector on top of the raster image.

I may have remembered my (old) post above wrong then, sorry.

bmike · 12 May 2011, 23:25

Nice thing about backedges, even if they don't render in hybrid or vector - is that they do allow you to snap when section cutting through a model...

bertsminky · 5 Aug 2011, 12:39

I did the two SU Scenes onto two LO layers and at first it showed perfectly well then after going back to it one of the scenes had become a solid form - ie you couldnt see through it to the other scene/layer behind ?
Any idea on why this would happen cos it had me scratching my head for a while - in the end i drew a clipping mask but for the backedges example above this wouldnt be suitable.

Dave R · 5 Aug 2011, 12:51

Bert, could you post the LO file so we can see? It could be something fairly straightforward.

Anssi · 6 Aug 2011, 19:14

Dave's method could perhaps be refined:

create two identical scenes in SketchUp, one in a style you want, the other in Wireframe, with a white background.
In LayOut, overlay the wireframe view on the standard view, and set it to use a Hidden linetype (I don't know if it is necessary to explode it first - my old laptop is too slow to run LayOut well)

Anssi

Yousefk88 · 27 Oct 2014, 22:04

For me i'm turning off edges in sketchup but they are showing again in layout, and couldnt find a style with there's no edges (out lines)...what to do?

Dave R · 28 Oct 2014, 09:05

@yousefk88 said:

For me i'm turning off edges in sketchup but they are showing again in layout, and couldnt find a style with there's no edges (out lines)...what to do?

Perhaps you could share an example? You description isn't very clear. Make a LayOut file that shows what you are talking about and post it.