-- File:        ViewVolume.cdl
-- Created:     Fri Dec  1 11:11:31 1995
-- Author:      EXPRESS->CDL V0.2 Translator
-- Copyright:   Matra-Datavision 1993


class ViewVolume from StepVisual 

inherits TShared from MMgt

uses

	CentralOrParallel from StepVisual, 
	CartesianPoint from StepGeom, 
	Real from Standard, 
	Boolean from Standard, 
	PlanarBox from StepVisual
is

	Create returns mutable ViewVolume;
	---Purpose: Returns a ViewVolume

	Init (me : mutable;
	      aProjectionType : CentralOrParallel from StepVisual;
	      aProjectionPoint : mutable CartesianPoint from StepGeom;
	      aViewPlaneDistance : Real from Standard;
	      aFrontPlaneDistance : Real from Standard;
	      aFrontPlaneClipping : Boolean from Standard;
	      aBackPlaneDistance : Real from Standard;
	      aBackPlaneClipping : Boolean from Standard;
	      aViewVolumeSidesClipping : Boolean from Standard;
	      aViewWindow : mutable PlanarBox from StepVisual) is virtual;

	-- Specific Methods for Field Data Access --

	SetProjectionType(me : mutable; aProjectionType : CentralOrParallel);
	ProjectionType (me) returns CentralOrParallel;
	SetProjectionPoint(me : mutable; aProjectionPoint : mutable CartesianPoint);
	ProjectionPoint (me) returns mutable CartesianPoint;
	SetViewPlaneDistance(me : mutable; aViewPlaneDistance : Real);
	ViewPlaneDistance (me) returns Real;
	SetFrontPlaneDistance(me : mutable; aFrontPlaneDistance : Real);
	FrontPlaneDistance (me) returns Real;
	SetFrontPlaneClipping(me : mutable; aFrontPlaneClipping : Boolean);
	FrontPlaneClipping (me) returns Boolean;
	SetBackPlaneDistance(me : mutable; aBackPlaneDistance : Real);
	BackPlaneDistance (me) returns Real;
	SetBackPlaneClipping(me : mutable; aBackPlaneClipping : Boolean);
	BackPlaneClipping (me) returns Boolean;
	SetViewVolumeSidesClipping(me : mutable; aViewVolumeSidesClipping : Boolean);
	ViewVolumeSidesClipping (me) returns Boolean;
	SetViewWindow(me : mutable; aViewWindow : mutable PlanarBox);
	ViewWindow (me) returns mutable PlanarBox;

fields

	projectionType : CentralOrParallel from StepVisual; -- an Enumeration
	projectionPoint : CartesianPoint from StepGeom;
	viewPlaneDistance : Real from Standard;
	frontPlaneDistance : Real from Standard;
	frontPlaneClipping : Boolean from Standard;
	backPlaneDistance : Real from Standard;
	backPlaneClipping : Boolean from Standard;
	viewVolumeSidesClipping : Boolean from Standard;
	viewWindow : PlanarBox from StepVisual;

end ViewVolume;