stl

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

Features

• 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

Applications

• 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)

Installation

Using go's builtin installation mechanism:

go get github.com/hschendel/stl

Usage Example

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

Stream Processing STL Files

You can implement the stl.Writer interface to directly write into your own data structures. This way you can use the stl.CopyFile and stl.CopyAll functions.

var ownData ownDataStructure // implements stl.Writer
err := stl.CopyFile("somefile.stl", &ownData)

Further Reading

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

godoc -http=:6060

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

License

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