Wrapping photos around cylindrical and spherical forms?

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owenransen
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Wrapping photos around cylindrical and spherical forms?

Post by owenransen » Wed Oct 17, 2012 12:45 pm

I'm considering what to put into a future version of PhotoToMesh and quite a few customers have mentioned wrapping photos around cylindrical and spherical forms.

If I did that would the STL simply be already roughly cylindrical or do you use some software to wrap them?

Currently http://www.ransen.com/PhotoToMesh/ simply does flat forms which use photos to raise and lower the levels.

All suggestions welcome!

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wackojacko
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Re: Wrapping photos around cylindrical and spherical forms?

Post by wackojacko » Wed Oct 17, 2012 1:09 pm

Meshmixer allows you to clone an area from one model onto another surface.

Being able to import into tinkercad, they currently have a limit.

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Bruce
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eyUP
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Re: Wrapping photos around cylindrical and spherical forms?

Post by eyUP » Wed Oct 17, 2012 1:57 pm

My plan (results here)was to allow the profile of the cylinder to be drawn - probably with bezier curves.
Then just revolve and create a mesh from it... mixing the pixel heights as you go.
Bear in mind you will need to create a revolved inner surface as well.
Some kind of scaling;start;end;height;width parameters would be needed to tell you where to start and stop mapping the pixels to the revolve.

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JuliaDee
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Re: Wrapping photos around cylindrical and spherical forms?

Post by JuliaDee » Wed Oct 17, 2012 5:03 pm

owenransen wrote:I'm considering what to put into a future version of PhotoToMesh
Welcome to the forum, Owen, great to see you here :)

julia

owenransen
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Re: Wrapping photos around cylindrical and spherical forms?

Post by owenransen » Thu Oct 18, 2012 5:17 am

wackojacko wrote:Meshmixer allows you to clone an area from one model onto another surface.
Being able to import into tinkercad, they currently have a limit.
What limit is that?

I was thinking of creating the cylinder direct from the photo without passing through any other mesh.

owenransen
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Re: Wrapping photos around cylindrical and spherical forms?

Post by owenransen » Thu Oct 18, 2012 5:18 am

JuliaDee wrote:
owenransen wrote:I'm considering what to put into a future version of PhotoToMesh
Welcome to the forum, Owen, great to see you here :)
julia
Thanks! I hope to get ideas for the next version of my program here.

owenransen
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Re: Wrapping photos around cylindrical and spherical forms?

Post by owenransen » Mon Oct 22, 2012 8:24 am

What sort of thickness range should the STL be for cylindrical lithophanes?

Presumably the lithophane is build as a cylinder with the central "hole" already present, hence the thickness of the wall should be specified at the time PhotoToMesh creates the STL file...?

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wackojacko
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Re: Wrapping photos around cylindrical and spherical forms?

Post by wackojacko » Mon Oct 22, 2012 8:30 am

Best if its an option, e.g. from 2 to about 10, even more for some models.
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owenransen
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Re: Wrapping photos around cylindrical and spherical forms?

Post by owenransen » Thu Oct 25, 2012 1:52 pm

eyUP wrote:My plan (results here)was to allow the profile of the cylinder to be drawn - probably with bezier curves.
Then just revolve and create a mesh from it... mixing the pixel heights as you go.
Bear in mind you will need to create a revolved inner surface as well.
Some kind of scaling;start;end;height;width parameters would be needed to tell you where to start and stop mapping the pixels to the revolve.
Yes, I've already added those sort of parameters.

That is a strange thing you've created, I had not imagined doing something quite so "deep into the cylinder"

owenransen
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Re: Wrapping photos around cylindrical and spherical forms?

Post by owenransen » Thu Oct 25, 2012 1:53 pm

wackojacko wrote:Best if its an option, e.g. from 2 to about 10, even more for some models.
What units are you using? My program creates STL files, which are unitless.

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wilsonj
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Re: Wrapping photos around cylindrical and spherical forms?

Post by wilsonj » Thu Oct 25, 2012 7:54 pm

Hi Owen,

I'd like to have a minimum of .8mm wall thickness. The thinner it is the better the light passes through. If it starts too thick I find the details are lost, unless I use a 200w Zenon to back light with!
Regards
Jamie
3DPrinterGear.com.au

owenransen
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Re: Wrapping photos around cylindrical and spherical forms?

Post by owenransen » Mon Oct 29, 2012 3:27 pm

So I should imagine most people using the pp3dp in mm?

Thanks!

owenransen
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Re: Wrapping photos around cylindrical and spherical forms?

Post by owenransen » Tue Nov 13, 2012 3:33 pm

Well, as promised Cylindrical forms are now available in PhotoToMesh, released today...

There's a demo so you can try for yourself:

http://www.ransen.com/PhotoToMesh/

Have fun all!

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