kicad-developers team mailing list archive

[Maciej Suminski <maciej.suminski@xxxxxxx>]

Hi Oliver,

What do you think about providing the models as compressed files? As any
text format, one can expect quite high compression ratio. Perhaps that
would be sufficient to solve the huge libraries problem.

Cheers,
Orson

On 11/06/2017 03:01 PM, Oliver Walters wrote:
> To provide an option to reduce the size of the 3D model library, I have
> implemented an "array" feature for 3D models. A module (footprint) can
> reference a single model multiple times, with a dimensional offset between
> each copy.
> 
> (Note - just the PinHeader models are currently over 1GB! This feature lets
> you use a single 3D model for all pin headers or similar repetitive
> footprints within a certain series).
> 
> Features:
> 
> 1. Specify repeat count and repeat step in x/y/z axes
> 2. Save / load implemented. (If no repeat option used, no extra output is
> generated - old files are not touched)
> 3. Render in 3D viewer
> 4. Render in raytracing viewer
> 5. Export to VRML (multiple references to single file)
> 6. Export to STEP
> 
> Notes:
> 
> a. An exported STEP file will now be (possibly) much smaller as it
> references a single small object multiple times
> b. There were a couple of bugs I found where model offset units were
> incorrectly translated between INCHES and MM
> 
> A couple of screenshots:
> 
> https://imgur.com/a/EOwPh
> 
> 
> Testing:
> 
> Wayne verified that the file units for 3D model data are in mm - I *think*
> this means that there was previously a bug regarding 3D model offset, where
> the scaling factor in the file was interpreted as inches when exporting
> (e.g. to STEP)
> 
> I believe I have fixed this bug - confirmation would be great.
> 
> Cheers,
> Oliver
> 
> 
> 
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