CM2 MeshTools® Suite /release 4.7.1

MeshTools

• meshtools1d::curvatures: now work also when the size of the `nodes` array
  is lesser or equal to 2 (the curvatures are null in these cases).

CM2 HexaMesh

• Improvements in the hard-quad enforcement scheme for embedded quads.

All meshers (except Intersect and Layers)

• With a low target_metric, the mesh generators could reserve an excessive amount of memory (and sometimes fail with a CM2_SYSTEM_MEMORY_ERROR, mostly on Win32).
• Interrupting early a generator (with mode.interrupt_hdl returning true) could make it crash.
• Parameter nodes_limit not properly taken into account.

CM2 HexaMesh

• Could generate non-conformal meshes on difficult cases (despite make_conformal_flag = true).
• A bug in the wall-quad enforcement scheme could cause the generator to exit with a CM2_INTERNAL_ERROR.
• A bug in the optimizer could cause the generator to exit with a CM2_INTERNAL_ERROR (Wall triangle missing).
• A bug in the optimizer could cause the generator to remove some embedded hard edges.
• Values in data_type::colors were jumbled.
• Bug with make_conformal_flag = false (resulting in invalid meshes, invalid colors, crashes…)
  The number of missing faces was wrong also.
• The progress parameter passed to the interrupt handler was not increasing monotonically.

CM2 TetraMesh, CM2 TetraMesh Aniso

• Wrong number of enforced hard edges (data.hard_edges_out) in case of unenforced faces.

CM2 QuadMesh, CM2 QuadMesh Aniso

• In mode.all_quad_flag = true with embedded nodes, could stop in some cases with CM2_IRREGULAR_BOUNDARY_ERROR (regression from 4.4.0).
• In mode.all_quad_flag = true with bi-oriented edges, could stop in some cases with CM2_IRREGULAR_BOUNDARY_ERROR.

CM2 SurfRemesh T3, CM2 SurfRemesh Q4

• Strange localized small elements near closed skeleton lines (when mode.min_h < mode.max_h).
• Irregular mesh sizes along some curved skeleton lines (when mode.min_h < mode.max_h).

CM2 SurfMesh T3, CM2 SurfMesh Q4

• Too coarse meshes along some long curves (see bug meshtools1d::mesh_curve_param below).

MeshTools

• meshtools3d::duplicate_surface_nodes_TH4: always failed with return code -3.
• meshtools2d::flip: wrong behaviour with FE_type = CM2_FACE_MIX and high-order faces.
• meshtools1d::mesh_curve_param: generation was arbitrary limited to 1000 nodes along each curve.
  This bug impacted CM2 SurfMesh T3 & Q4.
• Doc fixes.

MeshTools

• meshtools1d::mesh_spline: the max_gradation parameter doesn’t apply to the spline_metrics any more but only to the curvature-induced metrics.