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Wildmeshing Toolkit
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Whether a codimension-1 simplex is tracked surface, and which bbox side it lies on. More...
#include <SurfaceTagAttributes.h>
Public Member Functions | |
| void | reset () |
| void | merge (const SurfaceTagAttributes &attr) |
Public Attributes | |
| bool | m_is_surface_fs = false |
| Is this simplex part of the tracked surface. | |
| int | m_is_bbox_fs = -1 |
| Which bbox side this simplex is on; -1 for none. | |
| int | m_surface_class = 0 |
| Which tracked surface this simplex belongs to, for applications that track more than one. | |
Whether a codimension-1 simplex is tracked surface, and which bbox side it lies on.
The 3D meshes attach this to faces, the 2D meshes to edges; the four copies were character-identical, reset() and merge() included.
m_is_bbox_fs is the bbox side the simplex lies on, or -1 for none: 0/1 = x min/max, 2/3 = y min/max, 4/5 = z min/max. Tagging it is what keeps the bounding box from collapsing.
| int wmtk::SurfaceTagAttributes::m_surface_class = 0 |
Which tracked surface this simplex belongs to, for applications that track more than one.
0 is the application's primary surface, and is all tetwild and simwild ever use. topological_offset tracks two – the input complex it must stay in the envelope of, and the offset boundary it is free to move – and uses 1 for the latter. Meaningless, and left at 0, when m_is_surface_fs is false.
The class lives here, on the attribute struct, rather than in a container of its own because the shared operations copy face attributes WHOLESALE – assignment in the split and collapse caches, merge() in collapse_edge_before, reset() in the swap tracker. A field here is carried by all of that for free; a parallel container would be silently dropped by every one of those operations.
1.9.8