Wallpaper overlay question

[seagulls]

personally, I dont use wallpaper.I use background bitmaps.

You can place them by right clicking on the viewport name> background bitmap >place.Then find your file and scale it to fit.Or better yet save your image as the correct size and use snaps to place instead of scaling.
doesnt work with perspective viewport though.

good luck!

[kiwi8]

Yea thats the way im doing it, and have been. But Im wondering if theres a way to lock the background/wallpaper pic with the grid, so I can zoom, and pan on the pic and make more of an accurate model/trace. I just got new version of Rhino before I know you couldnt do it, but wondering if they changed anything to allow this.

Do I still have to make a plane fit the pic?

I think its pretty much standard with other 3d modeling progies.

[CLONEOPS]

Yea thats the way im doing it, and have been. But Im wondering if theres a way to lock the background/wallpaper pic with the grid, so I can zoom, and pan on the pic and make more of an accurate model/trace. I just got new version of Rhino before I know you couldnt do it, but wondering if they changed anything to allow this.

Do I still have to make a plane fit the pic?

I think its pretty much standard with other 3d modeling progies.

There are 3 ways to set up a reference image in rhino.
1.Command: _ViewportProperties =wallpaper..which will never move nor zoom or pan.it is locked...looks pretty but fairly non functional.
2.Command: BackgroundBitmap =background image....yes you can zoom in on this and pan.
3 .Create a plane and texture it with an image..this method is a leetle more flexible in some situations,set this on a locked layer...Yay!. pan ,zoom and 3d rotate!!,another advantage of this that is it becomes a workplane of a sort.
:)

[kiwi8]

oh snap background placement is different then wallpaper! Thanks CloneOPs and spincad!

[CLONEOPS]

oh snap background placement is different then wallpaper! Thanks CloneOPs and spincad!
Yep you got it!~
Cheers:)

[Riviner]

Hey guys! I've been primarily using Background image, but there is couple questions i have in mind:

1. Is there some kind of extension available for more possible bitmap filetypes? (currently there are *.bmp, *.tga, *.jpg, *.jpeg, *.pcx, *.png, *.tif, *.tiff) Would be very nice to get one for simple GIFs of even PSD. Bit tired of the evergoing need to always convert the images.

2. With Background image, what causes the image to "pixelate" (or morelike de-smooth to say) when sometimes one goes to the right-bottom edge of the image as an example. Also when i'm vectorising over the image (which i do quite often) and when zooming in, the image starts to "twitch" or moveabout, so it changes the place under the curves. Nothing too annoying, since it doesn't move SO much when it does, but still...

3. Is it possible to just place the Background image according to it's size (ex. 21 x 29,7 cm) somehow automatically? And maybe automatically center it to 0,0 too :)

Heh, i guess not. How i mostly do it myself is that i check the width (let's say 15 cm) divide it by two, i then type coordinates -7.5,0 and 7.5,0 so i don't have to even start looking for the height. Works for me, since i usually just need to have it vertically aligned to the center (mirroring most of the time)

Anyways, the way of texturising the planar plane is something new to me, of course it's a bit of more work to get the measurements right when compared to Background image, but now when testing this even the panning seems MUCH smoother. Hopefully some of those forementioned problems i listed could be solved using this plane technique. Thanks fellas.

[CLONEOPS]

~not in any order~

If you need proper image dimensions of a plane,just make a heightfield from image
=Command: _Heightfield the resultant object will follow the ratio/size of you original image.
..it's the only command i know of that follows the image dimensions to the original.
Then you can trace over the square shape with a simple textured plane...or set the background by it..again by tracing over it in wiremode.

Yes it's annoying ta convert images but i use Compupic Pro for batch conversion.
I have never ever seen any twitch like you describe while zooming in unless i am zooming in to that absolute extents of zooming...veeeery far in at very very small document unit settings.

Tracing out lines to a photoshop layer and using this is sometimes a better way to define
your modeling lines.
I think the image that get drawn to screen on the background image is limited/set to the rhino workspace resolution...it is annoying getting that pixelation problem though.!! ugh.

:)

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