CM2 MeshTools® SDK /release 5.1.1

• Minor version. Client applications need not to be recompiled against this update.

CM2 TriaMesh Iso, CM2 TriaMesh Aniso, CM2 QuadMesh Iso, CM2 QuadMesh Aniso

• Delaunay meshes can now be preferred when edge lengths in structured meshes are higher than settings.length_upper_bound.

CM2 QuadMesh Iso, CM2 QuadMesh Aniso

• Regression in 5.1.0 vs. 5.0: failure in mixed mode on 4-edge domains with 2 edges aligned (two triangles should be generated).

CM2 SurfMesh T3, CM2 SurfMesh Q4

• Issues with some periodic surfaces (failures or bad meshings).
• OCCT function Extent was called instead of agnostic cad::size (source code licenses only).

CM2 SurfRemesh T3, CM2 SurfRemesh Q4

• Issues with user-defined mesh sizes larger than target_h (not taken into account
  although advertised as having higher priority than min_h, max_h and target_h).
• Issues with settings_type::max_chordal_error (not always honored as it should be, giving too coarse meshes).
  Note that this fix can increase significantly the number of faces on singly-curved parts (tubes, fillets…)
• Faces could be flipped sometimes.
• CM2_INTERNAL_ERROR raised in rare cases.

CM2 SurfRemesh Q4

• Regression in 5.1.0 vs. 5.0: failure in mixed mode on 4-edge patches with 2 edges aligned and target_h = 0 (two triangles should be generated).

Miscellaneous

• meshtools::STL_output: crashed when coordinate matrix had only 2 rows.
  Now explicitly requires a coordinate matrix with 3 rows (returns an error code).
• meshtools::WavefrontOBJ_output: issues with format.