LDraw Editor

3 components:

1. Create LDraw/LeoCAD library, from source files (Stl/Png/Jpeg)
2. Ldraw model editor (remove duplicates, import/export submodels etc)
3. LDraw → GLB converter, using Trimesh.

---

Main LDraw database:

Basicall a part list (csv), including file locations & metadata.

Source files:

.csv; STL; picture files.

class parts_db:

Collection of parts, consisting:

• Data:
  • STL file. (binairy) (1:1) [mm]
  • Texture file. (optional)
• Metadata:
  • Part type.
  • Part Orientation: front, side, top
  • Orign of part: center, top, bottom, ..
  • RotationXaxis.
  • Pitch distance.
• LDraw export information:
  • LDraw description. (so categories could be used)
  • LDraw category.
  • LDraw scale.
  • LDraw color.
• FileVersion.

→ Import database (.csv) → Export database (.csv) → ExportLDrawFiles(destination_path)

class MeshData:

Reads STL files and able to export to:

• LDraw, including optional planar textures.

→ Read STL file → Write STL file → Orientate STL file (metadata) → Scale STL file → ExportMeshToLDraw(metadata)

---

LDraw Model Manager:

Loads/saves LeoCAD LDR/MPD files.

cls ModelManager:

• Dict. of (sub)models:
  • Dict ID: model name
  • Per submodel: list of parts, like LDraw definition. → Import (LDR/MPD) (remove doubles, remove empty groups, ...) → Update (filenames, positions) (needs LibraryManager) → Export (LDR/MPD) → ExportSubModelsToLDR → ExportFlattenedSubModel

---

GLB Exporter:

Needs:

• Trimesh & numpy.
• Path to LDraw parts libary.
• LDConfig.ldr.

cls LDRtoGLBConverter:

→ Converter includes:

• convert_ldr_to_scene(model.ldr)
• add_three_point_lighting