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2. Surface and volume of an STL mesh
One of the special features of the STL format is that it is dimensionless: the STL file contains no scale or length information. This means that the file contains no internal description of the units used to create the 3D model when it was generated. The units associated with the dimensions are therefore those you wish to assign to them (microns, millimeters, inches, centimeters...) when you re-open/read the file. Once this has been done, it is possible to calculate the surface area of the facets making up the mesh, as well as the volume included within the mesh.
2.1 STL mesh surface calculation
Calculating the area of an STL geometry is easy. Heron's formula is used to calculate the area A i of a triangle i in...
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Surface and volume of an STL mesh
STL mesh quality
Bibliography
Software tools
3DEXPERIENCE
Dassault Systèmes 10 Rue Marcel Dassault, 78140 Vélizy-Villacoublay, France.
CATIA V5
Dassault Systèmes 10 Rue Marcel Dassault, 78140 Vélizy-Villacoublay, France.
MAGICS
Materialise Technologielaan 15 3001 Leuven, Belgium.
MESHLAB (opensource)
...
Websites
What is an STL file?
https://www.sculpteo.com/fr/centre-apprentissage/creer-un-fichier-3d/quest-ce-quun-fichier-stl/
What is an STL file?
https://fr.3dsystems.com/quickparts/learning-center/what-is-stl-file
...Standards and norms
- Spécification pour le format de fichier pour la fabrication additive (AMF) Version 1.2. - ISO-ASTM 52915 :2020 -
- Industrial automation systems and integration – Control of physical devices – Data model for computerized digital controllers – Part 10: General process data. - ISO 14649-10 :2004 -
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