-- Created by: NW,JPB,CAL
-- Copyright (c) 1991-1999 Matra Datavision
-- Copyright (c) 1999-2012 OPEN CASCADE SAS
--
-- The content of this file is subject to the Open CASCADE Technology Public
-- License Version 6.5 (the "License"). You may not use the content of this file
-- except in compliance with the License. Please obtain a copy of the License
-- at http://www.opencascade.org and read it completely before using this file.
--
-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
--
-- The Original Code and all software distributed under the License is
-- distributed on an "AS IS" basis, without warranty of any kind, and the
-- Initial Developer hereby disclaims all such warranties, including without
-- limitation, any warranties of merchantability, fitness for a particular
-- purpose or non-infringement. Please see the License for the specific terms
-- and conditions governing the rights and limitations under the License.


class Vector from Graphic3d

	---Purpose: This class allows the creation and update
	--	    of a 3D vector.

uses

	Vertex	from Graphic3d

raises

	VectorError	from Graphic3d

is

	Create
		returns Vector from Graphic3d;
	---Level: Public
	---Purpose: Creates a vector with 1.0, 0.0, 0.0 coordinates.

	Create ( AX, AY, AZ	: Real from Standard )
		returns Vector from Graphic3d;
	---Level: Public
	---Purpose: Creates a vector with <AX>, <AY>, <AZ> coordinates.

	Create ( APoint1, APoint2	: Vertex from Graphic3d )
		returns Vector from Graphic3d;
	---Level: Public
	---Purpose: Creates a vector from 2 points <APoint1> and <APoint2>.

	---------------------------------------------------
	-- Category: Methods to modify the class definition
	---------------------------------------------------

	Normalize ( me	: in out )
	---Level: Public
	---Purpose: Normalises <me>.
	--  Category: Methods to modify the class definition
	--  Warning: Raises VectorError if <me> is null.
	raises VectorError from Graphic3d is static;

	SetCoord ( me			: in out;
		   Xnew, Ynew, Znew	: Real from Standard )
		is static;
	---Level: Public
	---Purpose: Modifies the coordinates of the vector <me>.
	---Category: Methods to modify the class definition

	SetXCoord ( me		: in out;
		    Xnew	: Real from Standard )
		is static;
	---Level: Public
	---Purpose: Modifies the X coordinate of the vector <me>.
	---Category: Methods to modify the class definition

	SetYCoord ( me		: in out;
		    Ynew	: Real from Standard )
		is static;
	---Level: Public
	---Purpose: Modifies the Y coordinate of the vector <me>.
	---Category: Methods to modify the class definition

	SetZCoord ( me		: in out;
		    Znew	: Real from Standard )
		is static;
	---Level: Public
	---Purpose: Modifies the Z coordinate of the vector <me>.
	---Category: Methods to modify the class definition

	----------------------------
	-- Category: Inquire methods
	----------------------------

	Coord ( me;
		AX, AY, AZ	: out Real from Standard )
		is static;
	---Level: Public
	---Purpose: Returns the coordinates of the vector <me>.
	---Category: Inquire methods

	IsNormalized ( me )
		returns Boolean from Standard
		is static;
	---Level: Public
	---Purpose: Returns Standard_True if <me> has length 1.
	---Category: Inquire methods

	LengthZero ( me )
		returns Boolean from Standard
		is static;
	---Level: Public
	---Purpose: Returns Standard_True if <me> has length zero.
	---Category: Inquire methods

	X ( me )
		returns Real from Standard
		is static;
	---Level: Public
	---Purpose: Returns the X coordinates of the vector <me>.
	---Category: Inquire methods

	Y ( me )
		returns Real from Standard
		is static;
	---Level: Public
	---Purpose: Returns the Y coordinate of the vector <me>.
	---Category: Inquire methods

	Z ( me )
		returns Real from Standard
		is static;
	---Level: Public
	---Purpose: Returns the Z coordinate of the vector <me>.
	---Category: Inquire methods

	--------------------------
	-- Category: Class methods
	--------------------------

	IsParallel ( myclass;
		     AV1	: Vector from Graphic3d;
		     AV2	: Vector from Graphic3d )
		returns Boolean from Standard;
	---Level: Public
	---Purpose: Returns Standard_True if the vector <AV1> and
	--	    <AV2> are parallel.
	---Category: Class methods

	NormeOf ( myclass;
		  AX, AY, AZ	: Real from Standard )
		returns Real from Standard;
	---Level: Public
	---Purpose: Returns the norm of the vector <AX>, <AY>, <AZ>.
	---Category: Class methods

	NormeOf ( myclass;
		  AVector	: Vector from Graphic3d )
		returns Real from Standard;
	---Level: Public
	---Purpose: Returns the norm of the vector <AVector>.
	---Category: Class methods

--

fields

--
-- Class	:	Graphic3d_Vector
--
-- Purpose	:	Declaration of variables specific to vectors
--
-- Reminder	:	A vector is defined by its components or by
--			two points
--			It can be normalised.
--

	-- the coordinates of a vector
	MyX		:	ShortReal from Standard;
	MyY		:	ShortReal from Standard;
	MyZ		:	ShortReal from Standard;

	-- the norm of a vector
	MyNorme		:	ShortReal from Standard;

end Vector;