Images from 3D model

[Adhip]

Hey everyone

I was trying to get 2D images in different views of my 3D model. Is there a way Cadquery does that itself? 
Once model is created, I should be able to save image files of model viewed from different angles. 

Let me know if anyone has any suggestions or alternatives to do this.

Thanks!

[Jeremy Wright]

I have not added the code to change the camera position yet, but I know it is possible with VTK because I have done it before.

https://gist.github.com/jmwright/e9ce05b197ea64d54bab7ca4ee4469ee

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[Jeremy Wright]

Check DXF and SVG export.

https://cadquery.readthedocs.io/en/latest/importexport.html

On Fri, Mar 29, 2024, 9:38 PM Adhip <drpramod...@gmail.com> wrote:

Hello Jeremy

Thanks for sharing this. I will check it out. 
Also it is possible to create 2D drawings from models generated using Cadquery?

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[Jeremy Wright]

I have experimented with adding dimension elements as parts in an assembly, which are then captured in the resulting DXF. I think that ezdxf, the library used by CadQuery for DXF export, also supports adding dimensions to DXFs programmatically.

https://ezdxf.readthedocs.io/en/stable/dxfentities/dimension.html

On Tue, Apr 2, 2024 at 6:48 PM Adhip <drpramod...@gmail.com> wrote:

Thanks for the reply. However I can't use Cadquery to give dimensions in that DXF right? Do you know anything regarding this?

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[Jeremy Wright]

I think the coordinate system with SVGs is Y-is-up. Have a look at the axis indicator in the screenshot in this section.

https://cadquery.readthedocs.io/en/latest/importexport.html#exporting-svg

On Fri, Apr 5, 2024 at 8:31 PM Joe Schroeder <josephjs...@gmail.com> wrote:

I have found that the SVG "projectionDir" option produces strange results.

In my world, Z is up, so the top view of my model should be the XY plane. When I set "projectionDir" to (0,0,1), that's what I get:

But setting it to (0,1,0) aligns the view's X axis vertically, and (1,0,0) also rotates the view 90 degrees:

I'm opening the model with f3dlib, which orients the Top, Front, and Right side views correctly:

Is there something I don't understand about "projectionDir", or is this a bug?

Thanks,

Joe

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[Adhip]

Hello Jeremy

I had one small query regarding SVG export. How do I get 1:1 viewing scale for my model if I don't specify width and height? 

I was experimenting with SVG format and I found out that if I increase the values, it may not fit within the specified dimensions. It usually exceeds it. 

If you could let me know how can I maintain 1:1 dimensions of my model after converting to SVG, that will be helpful. 

[Jeremy Wright]

With the way CadQuery's SVG export currently works, I don't think there is any way to ensure a 1:1 ratio without setting the width and height.

https://cadquery.readthedocs.io/en/latest/importexport.html#exporting-svg

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