Description of the GeoModel

The key object of RingMesh is the GeoModel that represents a geological model.

Constitutive elements

A model is defined by its constitutive elements (RINGMesh::GeoModelEntity) that can be derived into several classes:

• The base entities (RINGMesh::GeoModelMeshEntity). They define the geometry of the model
  • Regions 3D
  • Surfaces 2D
  • Lines 1D
  • Corners 0D
• The geological entities (RINGMesh::GeoModelGeologicalEntity). They are groups of base entities according to their geological meaning.
  • Layers
  • Interfaces
  • Contacts
• The RINGMesh::Universe that bounds the volume of interest.

The RINGMesh::GeoModelEntity stores the basic required information to identify an element of the RINGMesh::GeoModel:

• The RINGMesh::GeoModel owning the element.
• The index and type of the element.
• A name.
• A geological feature (fault, horizon...).
• ...

The Geometrical Entities: RINGMesh::GeoModelMeshEntity

A RINGMesh::GeoModelMeshEntity is an abstract class of the RINGMesh::GeoModelEntity. It stores a RINGMesh::Mesh to support the Geometry of:

• RINGMesh::Region
• RINGMesh::Surface
• RINGMesh::Line
• RINGMesh::Corner

The low level classes implement methods to operate on meshes according to their dimension.

The Geological Entities: RINGMesh::GeoModelGeologicalEntity

A RINGMesh::GeoModelGeologicalEntity is an abstract class of the RINGMesh::GeoModelEntity. It stores the connectivity between RINGMesh::GeoModelMeshEntity to provide a geological meaning to geometrical entities. It uses a kind of parent/child implementation. Built-in RINGMesh::GeoModelGeologicalEntity (sub-classes) in RINGMesh are:

• RINGMesh::Contact. It is the parent of several RINGMesh::Line (children). A RINGMesh::Contact represents a geological contact, i.e. the intersections between two RINGMesh::Interface (intersection between two faults or between a fault and a horizon for instance).
• RINGMesh::Interface. It is the parent of several RINGMesh::Surface (children). A RINGMesh::Interface represents a 2D geological objects such as a fault or a horizon.
• RINGMesh::Layer. It is the parent of several RINGMesh::Region (children). It represents a geological layer.

It is possible to define other kinds of RINGMesh::GeoModelGeologicalEntity by deriving RINGMesh::GeoModelGeologicalEntity.

RINGMesh::GeoModelMesh : a global mesh representation of the GeoModel

The GeoModelMesh is one mesh built from copying and merging the RINGMesh::GeoModelMeshEntity. Description of the GeoModelMesh

Building a GeoModel

The class RINGMesh::GeoModelBuilder implements functions to build and modify the elements of a RINGMesh::GeoModel. Any new builder should derive from this class. Three main builders are implemented:

• RINGMesh::GeoModelBuilderGM to load RINGMesh geological model format (boundary representation or 3D meshed models).
• RINGMesh::GeoModelBuilderGocad to load either:
  • A SKUA-GOCAD structural model saved in a .ml (RINGMesh::GeoModelBuilderML) file.
  • A volumetric model saved in a .so (RINGMesh::GeoModelBuilderTSolid) file.
• RINGMesh::GeoModelBuilderSurfaceMesh and RINGMesh::GeoModelBuilderMesh to build a RINGMesh::GeoModel from a RINGMesh::Mesh.