refiners Directory Reference

Files
file	barycentric_quad_refiner.cc [code]
	Implementation for class barycentric_quad_refiner.
file	barycentric_quad_refiner.h [code]
	Interface for class barycentric_quad_refiner.
file	barycentric_refiner_family.cc [code]
	Implementation for class barycentric_refiner_family.
file	barycentric_refiner_family.h [code]
	Interface for class barycentric_refiner_family.
file	barycentric_triangle_refiner.cc [code]
	Implementation for class barycentric_triangle_refiner.
file	barycentric_triangle_refiner.h [code]
	Interface for class barycentric_triangle_refiner.
file	depth_bound_refinement_policy.cc [code]
	Implementation for class depth_bound_refinement_policy.
file	depth_bound_refinement_policy.h [code]
	Interface for class depth_bound_refinement_policy.
file	edge_centered_polygon_refiner.cc [code]
	Implementation for class edge_centered_polygon_refiner.
file	edge_centered_polygon_refiner.h [code]
	Interface for class edge_centered_polygon_refiner.
file	edge_centered_refiner_family.cc [code]
	Implementation for class edge_centered_refiner_family.
file	edge_centered_refiner_family.h [code]
	Interface for class edge_centered_refiner_family.
file	edge_centered_triangle_refiner.cc [code]
	Implementation for class edge_centered_triangle_refiner.
file	edge_centered_triangle_refiner.h [code]
	Interface for class edge_centered_triangle_refiner.
file	field_refinement_buffer.cc [code]
	Implementation for class field_refinement_buffer.
file	field_refinement_buffer.h [code]
	Interface for class field_refinement_buffer.
file	field_refinement_policy.cc [code]
	Implementation for class field_refinement_policy.
file	field_refinement_policy.h [code]
	Interface for class field_refinement_policy.
file	field_refiner.cc [code]
	Implementation for class field_refiner.
file	field_refiner.h [code]
	Interface for class field_refiner.
file	field_refiner_family.cc [code]
	Implementation for class field_refiner_family.
file	field_refiner_family.h [code]
	Interface for class field_refiner_family.
file	local_field_refiner.cc [code]
	Implementation for class local_field_refiner.
file	local_field_refiner.h [code]
	Interface for class local_field_refiner.
file	refining_section_pusher.cc [code]
	Implementation for class refining_section_pusher A map from one sec_rep_space to another.
file	refining_section_pusher.h [code]
	Interface for class refining_section_pusher.
file	variance_bound_refinement_policy.cc [code]
	Implementation for class variance_bound_refinement_policy.
file	variance_bound_refinement_policy.h [code]
	Interface for class variance_bound_refinement_policy.
file	zone_centered_error_bound_refinement_policy.cc [code]
	Implementation for class zone_centered_error_bound_refinement_policy.
file	zone_centered_error_bound_refinement_policy.h [code]
	Interface for class zone_centered_error_bound_refinement_policy.
file	zone_centered_refiner_family.cc [code]
	Implementation for class zone_centered_refiner_family.
file	zone_centered_refiner_family.h [code]
	Interface for class zone_centered_refiner_family.
file	zone_centered_segment_refiner.cc [code]
	Implementation for class zone_centered_segment_refiner.
file	zone_centered_segment_refiner.h [code]
	Interface for class zone_centered_segment_refiner.
file	zone_centered_tet_refiner.cc [code]
	Implementation for class zone_centered_tet_refiner.
file	zone_centered_tet_refiner.h [code]
	Interface for class zone_centered_tet_refiner.
file	zone_centered_triangle_refiner.cc [code]
	Implementation for class zone_centered_triangle_refiner.
file	zone_centered_triangle_refiner.h [code]
	Interface for class zone_centered_triangle_refiner.

Detailed Description

The refiners cluster contains classes intended to support adaptive mesh refinement. The classes fall into 4 categories:

• refinement policies:
  classes with "_policy" suffix implement refinement policies that specify the conditions under which a zone should be refined;

• local refinement services:
  classes with "_refiner" suffix implement the actual refinement operation, each subdivides a specific zone type;

• refiner families:
  classes with "_family" suffix collect refiners into families with one refiner for each primitive cell type that may appear in a mesh; and
• global refinement services:
  classes field_refiner ansdrefining_section_pusher (see pushers cluster) use a refinement policy and a refinement family to accomplish refinement over an entire mesh.

There are three refinement families currently:

• zone-centered refinement family:
  refiners that create new vertices only in the interior of a zone;
• edge-centered refinement family:
  refiners that create new vertices in the boundary of a zone; and
• barycentric refinement family:
  refiners that create new vertices both in the interior and in the boundary of a zone. Specifically, barycentric refiners create a new vertex in the center of each member of the downset of a zone, that is, in the center of the zone and in the centers of each of its faces and edges.

The edge centered and barycentric refiners are more complicated to implement because the boundaries are shared between zones, including between zones that are refined and zones that are not refined. These refiners require more computational resources, but they also produce better results.

Status:

The refiners cluster is a work in progress. The initial development has validated the design approach, but has also identified several additional features which must be implemented:

• d=3 refiners:
  The edge centered and barycentric refiners are currently implemented only for d = 1 and 2, because the d = 3 versions require kernel features that have not yet been implemented.
• multi-field refiner:
  The field_refiner currently refines the mesh, the coordinates, and a primary property section, which determines the refinement. The refiner needs to be generalized to simultaneously refine the primary property field and multiple secondary property fields.