-- File:	StlMesh_MeshDomain.cdl
-- Created:	Tue Sep 21 09:59:49 1995
-- Author:	 Philippe GIRODENGO
---Copyright:	 Matra Datavision 1995



class MeshDomain from StlMesh inherits TShared from MMgt

	---Purpose: A  mesh domain is  a set of triangles defined with
	--          three geometric vertices. The  mesh domain has its
	--          own deflection.
	--          
uses
    SequenceOfXYZ          from TColgp,
    SequenceOfMeshTriangle from StlMesh


raises 

    NegativeValue from Standard,
    NullValue     from Standard

is

    Create  returns mutable MeshDomain;
    	---Purpose: The mesh deflection is defaulted to Confusion from 
    	--          package Precision.


    Create (Deflection : Real)  returns mutable MeshDomain
    raises NegativeValue,
    	---Purpose: Raised if the deflection is lower than zero
    	   NullValue;
	---Purpose: Raised if the deflection  is lower than  Confusion
	--          from package Precision
    

    AddTriangle (me : mutable; V1, V2, V3 : Integer; Xn, Yn, Zn : Real) 
    returns Integer
    	---Purpose: Build a triangle with the triplet of vertices (V1,
    	--          V2, V3).  This triplet defines  the indexes of the
    	--          vertex in the  current domain The coordinates  Xn,
    	--          Yn,  Zn  defines   the normal  direction   to  the
    	--          triangle.  Returns  the  range of  the triangle in
    	--          the current domain.
    is virtual;
    

    AddVertex (me : mutable; X, Y, Z : Real) returns Integer
    	---Purpose: Returns the range of the vertex in the current 
    	--          domain. 
    is virtual;
    

    AddOnlyNewVertex (me : mutable; X, Y, Z : Real; IsNew : in out Boolean) 
    returns Integer
    	---Purpose: Returns  the range of   the vertex in  the current
    	--          domain.  The current vertex is not inserted in the
    	--          mesh if it already exist.
    is virtual;
    

    Deflection (me) returns Real is virtual;
    	---C++: inline


    NbTriangles (me) returns Integer is virtual;
    	---Purpose: Number of triangles in the mesh.
    	---C++: inline


    NbVertices (me) returns Integer is virtual;
    	---Purpose: Number of vertices in the mesh.
    	---C++: inline


    Triangles (me) returns SequenceOfMeshTriangle is virtual;
    	---Purpose: Returns the set of triangles of the  current mesh domain
    	---C++: return const &
    	---C++: inline



    Vertices (me)  returns SequenceOfXYZ is virtual;
    	---Purpose: Returns  the coordinates   of the  vertices of the
    	--          mesh domain   of range <DomainIndex>.   {XV1, YV1,
    	--          ZV1, XV2, YV2, ZV2, XV3,.....}
    	---C++: return const &
    	---C++: inline


fields

    deflection           : Real;
    nbVertices           : Integer;
    nbTriangles          : Integer;
    vertexCoords         : SequenceOfXYZ;
    trianglesVertex      : SequenceOfMeshTriangle;

end MeshDomain;