[SVG] svg files don't match the physical dimensions of the wires.

[giannissc]

As a tool for creating physical objects cadquery should produce svg that match 1:1 with the physical dimensions.
The exportSVG function produced incorectly scaled svgs. The UnitScale should be set to 3.7795 as per the svg spec.

For more information see: #1317

[giannissc]

Issue created @voneiden

[adam-urbanczyk]

Currently SVG in CQ is meant for visualization only. Use DXF for fabrication.

[giannissc]

Currently SVG in CQ is meant for visualization only. Use DXF for fabrication.

SVG as implied by their name are scalable so its size does not really make a difference on the screen but it is a useful export format for machining as well! In the machine I have access to SVGs work better than DXFs.

Is there any argument against supporting this? I will be creating a PR for this soon.

[adam-urbanczyk]

Probably completely new implementation will be needed for your use case. Take a look at the DXF exporter for inspiration and maybe start with implementing a new svg export func/don't touch the old func.

[voneiden]

I think having an option to output both fixed size (like now) where the model is scaled to fit the given area or output with given aspect ratio would be nice.

Something to note also is stroke width, ie. if we have a very large model that is rendered at say 1:1 and then scaled down to fit on a web page by a web browser, the stroke width might end up being too thin. Right?

[adam-urbanczyk]

@voneiden sounds nice but AFAICT it is orthogonal to what OP wants.

@giannissc could you maybe describe your issue / use case better? You claim something is violating some spec. A link to relevant spec would be nice.