A library to read, write, and transform Stereolithography (.stl) files in Go. It is used in the command line STL manipulation tool stltool.

• Read and write STL files in either binary or ASCII form
• Check correctness of STL files
• Measure models
• Various linear model transformations
  • Scale
  • Rotate
  • Translate (Move)
  • Fit into box
  • Apply generic 4x4 transformation matrix

• Save 3D models as STL
• Import STL models
• Repair and manipulation of STL models
• General pre-processing before processing STL models in a 3D printing slicer
• Writing a slicer in Go (I hope someone does this one day)

Using go's builtin installation mechanism:

go get github.com/hschendel/stl

solid, errRead := stl.ReadFile(inputFilename)
if errRead != nil {
  // handle
}
solid.Scale(25.4) // Convert from Inches to mm
errWrite := solid.WriteFile(outputFilename)

The package godoc documentation should be helpful. Or just start a local godoc server using this command:

godoc -http=:6060

Then open http:https://localhost:6060/pkg/github.com/hschendel/stl/ in your browser.

The stl package is licensed under the MIT license. See LICENSE file.