Vertices, Faces, Color matrices on nxs/nxz files

[VasilisTz1]

Hello everyone,

I am currently using the 3DHOP Web app and the Nexus converter. I convert my .obj files to .nxs/.nxz file format, and I would like to edit 3D objects. I see some of the functionalities, like the picking, measurement, slicing, but I can't find the indexes of the Vertices, Faces, (and Color maybe). There is a function called DrawScenePickingxyz() in the presenter.js which returns the x,y,z coordinates of the picking location, but I haven't found anything more than that...

Any help will be much appreciated!

[ponchio]

Hi Vasilis,

          .nxs format is for visualization only, you need to edit them

BEFORE converting to nxs. The conversion is advised only for somewhat large models (> 100K triangles). After the conversion you do not retain the vertex and face indexing (they are unified, simplified, reordered, compressed...), the color (not the vertex color, but the interpolated vertex color or the interpolated texture color) could be recovered with some modifications.

I guess (wild guess) you might be trying to 'segment' the model and trying to identify the part under the mouse. If you can just split the models, otherwise the color approach is probably the best (but would require some fiddling with the picking pipeline).

On Mon, Dec 6, 2021 at 2:49 PM VasilisTz1 @.***> wrote:

Hello everyone,

I am currently using the 3DHOP Web app and the Nexus converter. I convert my .obj files to .nxs/.nxz file format, and I would like to edit 3D objects. I see some of the functionalities, like the picking, measurement, slicing, but I can't find the indexes of the Vertices, Faces, (and Color maybe). There is a function called DrawScenePickingxyz() in the presenter.js which returns the x,y,z coordinates of the picking location, but I haven't found anything more than that...

Any help will be much appreciated!

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