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67 lines
3.2 KiB
67 lines
3.2 KiB
# svg2gcode
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[](https://codecov.io/gh/sameer/svg2gcode)
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Convert any SVG 1.1 path to gcode for a pen plotter, laser engraver, etc.
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## TODO
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- [ ] Biarc interpolation (G2/G3 instead of many G1)
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- [ ] Sort paths by distance to reduce G0 distances
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- [ ] Comments in GCode input
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- [ ] Rustdocs
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## Known bugs/issues
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- [ ] Smooth curves should not use the control point when the previous curve is not of the same type (quadratic -> smooth cubic, cubic -> smooth quadratic)
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- This is just a nit, it shouldn't matter if the SVG is correct
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## Demonstration
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### Input
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```bash
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cargo run --release -- examples/Vanderbilt_Commodores_logo.svg --off 'M4' --on 'M5' -o out.gcode
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```
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### Output, rendered at [https://ncviewer.com]()
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```bash
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cat out.gcode
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```
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### Real-world use on a Prusa Mini+
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A [Prusa Mini+](https://shop.prusa3d.com/en/3d-printers/994-original-prusa-mini.html) was set up with a [pen plotter attachment](https://github.com/sameer/models/wiki#prusa-mini-plotter).
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The `Vanderbilt_Commodores_logo.svg` and `moore.svg` examples were plotted on the same page.
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```bash
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cargo run --release -- --begin 'G0 Z10 G28 M201 X1250 Y1250 Z400 M203 X400 Y400 Z24 M205 X8.00 Y8.00 Z2.00 M107 G0 Z10 G0 X0 Y0 G0 Z1' --end 'G0 Z10' --on 'G0 Z1' --off 'G0 Z3' --origin 0,34 examples/Vanderbilt_Commodores_logo.svg -o out.gcode --feedrate 3000
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```
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## FAQ / Interesting details
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* Use a 3D printer for plotting: (thanks @jeevank for sharing this) https://medium.com/@urish/how-to-turn-your-3d-printer-into-a-plotter-in-one-hour-d6fe14559f1a
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* Convert a PDF to GCode: follow [this guide using Inkscape to convert a PDF to an SVG](https://en.wikipedia.org/wiki/Wikipedia:Graphics_Lab/Resources/PDF_conversion_to_SVG#Conversion_with_Inkscape), then use it with svg2gcode
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* Are shapes, fill patterns supported? All objects can be converted to paths in Inkscape with `Object to Path` for use with this program. Not sure how practical fill patterns would be -- if you have ideas, feel free to open as issue or a PR.
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* What about a generic PPD driver for using a plotter as a printer? I thought about doing something like this where you package ghostscript + inkscape + svg2gcode but that would take a lot of time
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## Reference Documents
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* [W3 SVG2 Specification](https://www.w3.org/TR/SVG/Overview.html)
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* [CSS absolute lengths](https://www.w3.org/TR/css-values/#absolute-lengths)
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* [CSS font-relative lengths](https://www.w3.org/TR/css-values/#font-relative-lengths)
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* [CSS compatible units](https://www.w3.org/TR/css-values/#compat)
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* [RepRap G-code](https://reprap.org/wiki/G-code)
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* [G-Code and M-Code Reference List for Milling](https://www.cnccookbook.com/g-code-m-code-reference-list-cnc-mills/)
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