-- File:	gce.cdl
-- Created:	Thu Apr 30 11:36:51 1992
-- Author:	Remi GILET
--		<reg@topsn3>
---Copyright:	 Matra Datavision 1992

package gce

uses gp,
     StdFail

      	--- Level : Public  
      	--  All methods of all  classes will be public.



is

enumeration ErrorType is Done, ConfusedPoints, NegativeRadius, ColinearPoints,
    	    	      IntersectionError, NullAxis, NullAngle, NullRadius,
    	    	      InvertAxis,BadAngle,InvertRadius,NullFocusLength,
    	    	      NullVector,BadEquation;
    	--- Purpose: Indicates the outcome of a construction, i.e.
    	-- whether it is successful or not, as explained below.
    	-- gce_Done: Construction was successful.
    	-- gce_ConfusedPoints: Two points are coincident.
    	-- gce_NegativeRadius: Radius value is negative.
    	-- gce_ColinearPoints: Three points are collinear.
    	-- gce_IntersectionError: Intersection cannot be computed.
    	-- gce_NullAxis: Axis is undefined.
    	-- gce_NullAngle: Angle value is invalid (usually null).
    	-- gce_NullRadius: Radius is null.
    	-- gce_InvertAxis: Axis value is invalid.
    	-- gce_BadAngle: Angle value is invalid.
    	-- gce_InvertRadius: Radius value is incorrect
    	-- (usually with respect to another radius).
    	-- gce_NullFocusLength: Focal distance is null.
    	-- gce_NullVector: Vector is null.
    	-- gce_BadEquation: Coefficients are
    	-- incorrect (applies to the equation of a geometric object).


private deferred class Root;
    	---Purpose: Root of classes with error report.

class MakeDir2d;
    	---Purpose: Makes a dir2d from gp.

class MakeLin2d;
    	---Purpose: Makes a Lin2d from gp.
	
class MakeCirc2d;
    	---Purpose: Makes a Circ2d from gp.

class MakeHypr2d;
    	---Purpose: Makes an hypr2d from gp.

class MakeElips2d;
    	---Purpose: Makes an Elips2d from gp.

class MakeParab2d;
    	---Purpose: Makes a parab2d from gp.

---------------------------------------------------------------------------
    ---Purpose : Constructions of Trsf2d from gp.
---------------------------------------------------------------------------

class MakeTranslation2d;
    	---Purpose: Returns a translation transformation.

class MakeMirror2d;
    	---Purpose: Returns a symmetry transformation.

class MakeRotation2d;
    	---Purpose: Returns a rotation transformation.
 
class MakeScale2d;
    	---Purpose: Returns a scaling transformation.

---------------------------------------------------------------------------
    ---Purpose: scalar product.
---------------------------------------------------------------------------

--class MakeDot;
    ---Purpose: Makes a scalar product between the two vectors P1P2 and P3P4.

---------------------------------------------------------------------------
    ---Purpose: vector product.
---------------------------------------------------------------------------

--class MakeCross2d;
    ---Purpose: Makes a Cross between the two vectors P1P2 and P1P3.

--class MakeDotCross;
    ---Purpose: Makes the triple scalar product P1P2 * (P3P4 ^ P5P6).

---------------------------------------------------------------------------
    ---Purpose : Constructions of 3d geometrical elements from gp.
---------------------------------------------------------------------------

class MakeDir;
    	---Purpose: Makes a dir from gp.

class MakeLin;
    	---Purpose: Makes a Line <L> from gp.
	
class MakeCirc;
    	---Purpose: Makes a Circle <C> from gp.

class MakeHypr;
    	---Purpose: Makes an hyperbola <H> from gp.

class MakeElips;
    	---Purpose: Makes an ellipse <E> from gp.

class MakeParab;
    	---Purpose: Makes a parabola <P> from gp.

---------------------------------------------------------------------------
    ---Purpose : Constructions of planes from gp.
---------------------------------------------------------------------------

class MakePln;
    	---Purpose: Makes a plane <Pl> from gp.

---------------------------------------------------------------------------
    ---Purpose: Construction of surfaces from gp.
---------------------------------------------------------------------------

class MakeCylinder;
    ---Purpose: Makes a cylinder <Cyl> from gp.
 
class MakeCone;
    ---Purpose: Makes a cone <Cone> from gp.

---------------------------------------------------------------------------
    ---Purpose : Constructions of Trsf from gp.
---------------------------------------------------------------------------

class MakeTranslation;
    	---Purpose: returns a translation transformation.

class MakeMirror;
    	---Purpose: returns a symmetry transformation.

class MakeRotation;
    	---Purpose: returns a rotation transformation.
 
class MakeScale;
    	---Purpose: returns a scaling transformation.
 
---------------------------------------------------------------------------
    ---Purpose: vector product.
---------------------------------------------------------------------------

--class MakeCross;
    ---Purpose: Makes a Cross product between the two vectors P1P2 and P1P3.

--class MakeDotCross;
    ---Purpose: Makes the triple scalar product P1P2 * (P3P4 ^ P5P6).

end gce;