This is why FreeCAD relies on Brep instead.
However, in the field of engineering meshes present a big limitation: they cannot accurately define curved surfaces. For these reasons, meshes are often the 3D object type of choice for applications dealing with movies, animation, and image creation. In addition, since meshes contain very simple data, 3D applications can usually manage very large quantities of them without using a lot of resources. Since meshes are very simple objects, containing only vertices (points), edges and triangular faces, they are very easy to create, modify, subdivide, stretch, and can easily be passed from one application to another without any loss of details. Many 3D applications, like Sketchup, Blender, Maya and 3D Studio Max, use meshes as their primary type of 3D object.
Meshes are a special type of 3D object, composed of triangular faces connected by their vertices and edges. The Mesh Workbench handles triangle meshes.
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