flat 3D image

[stanchissimo80]

sorry for my question, but I am really at the beginning. Is there a function to flatten, or rather, squeeze / stretch a 3D image? I have the 3D mesh of a sheet of paper and I am interested in stretching it (not a simple orthogonal projection) .

Thanks,

M.

[10DSpace]

@stanchissimo80 

It's not really clear what you want to do.  You have a 3D mesh of a sheet of paper, but you say you want to stretch a 3D image?

Do you want to stretch the mesh or stretch the rendered image of the mesh?  A screenshot of your mesh and what exactly you want to do would help.

[stanchissimo80]

sorry, I was not clear. I have a 3d image of a crumpled paper. I would like to obtain a 2d image, but not a simple projection ("flatten" command in autocad for example), I would like to obtain a "stretched 2d image" .

[10DSpace]

@stanchissimo80 

Sorry, but I still do not know what you mean by a 3D image?  Do you mean a stereoscopic image that you use special glasses for?   Also, it's not clear what you mean by stretched (in every dimension? by how much? proportionally or not?) and what you need the max crumpled paper mesh for in this process?   

It might be possible to help you with a screenshot of your image and how exactly you want to change it, but I can't guess based on the information you have provided. 

[leeminardi]

By "3D image" do you mean a pictorial view, or isometric view, or perspective view, or axonometric projection?  If the image is a jpg, gif, png or other raster format it is a 2D image. There are image files that carry 3D data but not any of these.

If it is a pictorial image is you goal to create an orthogonal view of the paper flattened to its original shape?

[stanchissimo80]

Hi, I have an obj file, an mtl and an jpg(for texture). This represents a crumpled sheet, on which some letters are written. 

Each character, seen from above, is seen modified. Due to the wrinkled sheet, there are some vertices. I want to lower these vertices, "iron" the sheet .

Sorry, but I can't upload the image because  I didn't create it myself.

[leeminardi]

Stating that you had a "3D image" threw me off, and perhaps others, off. As I understand it now you have a 3D mesh in an OBJ file format and 2D material maps.  Yes?

You state that you would like to lower some of the vertices.  Is you expectation that in lowering the vertices the shape of the effected faces or polygons will distort?  If so, could you just set all z coordinates in the OBJ file to zero? 

[10DSpace]

@stanchissimo80 

Since all you want to do is flatten the mesh, you can also select all of the polygons and use "Make Planar" (in Z) in the editable poly/edit poly rollout to flatten.  You can then select all of the vertices and then use Relax function in editable poly rollout to stretch the vertices apart if you need to. You can hit Relax multiple times to stretch further.

[10DSpace]

@stanchissimo80 

Also, if you do not want the mesh to be completely flattened (a little crumpled, but still able to read the text), you can select all of the vertices and scale them using Scale Transform in Z dimension as much or as little as you want.