-- File:	Graphic3d_ArrayOfTriangleFans.cdl
-- Created:	04/01/01 : GG : G005 : Draw ARRAY primitives
--

class ArrayOfTriangleFans from Graphic3d inherits ArrayOfPrimitives from Graphic3d 

is

	-- constructor
	Create (
                maxVertexs: Integer from Standard;
                maxFans: Integer from Standard = 0;
                hasVNormals: Boolean from Standard = Standard_False;
                hasVColors: Boolean from Standard = Standard_False;
                hasFColors: Boolean from Standard = Standard_False;
                hasTexels: Boolean from Standard = Standard_False)
	returns mutable ArrayOfTriangleFans from Graphic3d;
        ---Purpose: Creates an array of triangle fans,
        -- a polygon can be filled as:
        -- 1) creating a single fan defined with his vertexs.
        --    i.e:
        --    myArray = Graphic3d_ArrayOfTriangleFans(7)
        --    myArray->AddVertex(x1,y1,z1)
        --      ....
        --    myArray->AddVertex(x7,y7,z7)
        -- 2) creating separate fans defined with a predefined
        --    number of fans and the number of vertex per fan.
        --    i.e:
        --    myArray = Graphic3d_ArrayOfTriangleFans(8,2)
        --    myArray->AddBound(4)
        --    myArray->AddVertex(x1,y1,z1)
        --      ....
        --    myArray->AddVertex(x4,y4,z4)
        --    myArray->AddBound(4)
        --    myArray->AddVertex(x5,y5,z5)
        --      ....
        --    myArray->AddVertex(x8,y8,z8)
        --
        -- <maxVertexs> defined the maximun allowed vertex number in the array.
        -- <maxFans> defined the maximun allowed fan number in the array.
        -- The number of triangle really drawn is :
        -- VertexNumber()-2*Min(1,BoundNumber())
        ---Warning:
        -- When <hasVNormals> is TRUE , you must use one of
        --      AddVertex(Point,Normal)
        --  or  AddVertex(Point,Normal,Color)
        --  or  AddVertex(Point,Normal,Texel) methods.
        -- When <hasVColors> is TRUE , you must use one of
        --      AddVertex(Point,Color)
        --  or  AddVertex(Point,Normal,Color) methods.
        -- When <hasTexels> is TRUE , you must use one of
        --      AddVertex(Point,Texel)
        --  or  AddVertex(Point,Normal,Texel) methods.
        -- When <hasBColors> is TRUE , <maxBounds> must be > 0 and
        --      you must use the
        --      AddBound(number,Color) method.
        --  Warning:
        -- the user is responsible about the orientation of the fan
        -- depending of the order of the created vertex and this
        -- orientation must be coherent with the vertex normal optionnaly
        -- given at each vertex (See the Orientate() methods).


end;