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



class MeshTriangle from StlMesh inherits TShared from MMgt

	---Purpose: A  mesh triangle is defined with
	--          three geometric vertices and an orientation
	--          

raises 

    NegativeValue from Standard

is

    Create  returns mutable MeshTriangle;
    	---Purpose: empty constructor


    Create (V1, V2, V3 : Integer; Xn, Yn, Zn : Real)  returns mutable MeshTriangle
        ---Purpose: create a triangle defined with the indexes of its three vertices 
        --          and its orientation
    raises NegativeValue;
    	---Purpose: Raised if V1, V2 or V3 is lower than zero


    GetVertexAndOrientation (me; V1, V2, V3 : out Integer; Xn, Yn, Zn : out Real);
        ---Purpose: get indexes of the three vertices (V1,V2,V3) and the orientation

    SetVertexAndOrientation (me : mutable; V1, V2, V3 : in Integer; Xn, Yn, Zn : in Real)
        ---Purpose: set indexes of the three vertices (V1,V2,V3) and the orientation
    raises NegativeValue;
    	---Purpose: Raised if V1, V2 or V3 is lower than zero


    GetVertex  (me; V1, V2, V3 : out Integer);
        ---Purpose: get indexes of the three vertices (V1,V2,V3)

    SetVertex  (me : mutable; V1, V2, V3 : in Integer)
        ---Purpose: set indexes of the three vertices (V1,V2,V3)
    raises NegativeValue;
    	---Purpose: Raised if V1, V2 or V3 is lower than zero


fields 

    MyV1     : Integer;
    MyV2     : Integer;
    MyV3     : Integer;
    MyXn     : Real;
    MyYn     : Real;
    MyZn     : Real;

end MeshTriangle;