-- File:	STEPConstruct.cdl
-- Created:	Wed Nov 17 14:13:03 1999
-- Author:	Andrey BETENEV
--		<abv@doomox.nnov.matra-dtv.fr>
---Copyright:	 Matra Datavision 1999


package STEPConstruct 

    ---Purpose: Defines tools for creation and investigation STEP constructs 
    --          used for representing various kinds of data, such as product and
    --          assembly structure, unit contexts, associated information
    --          The creation of these structures is made according to currently
    --          active schema (AP203 or AP214 CD2 or DIS)
    --          This is taken from parameter write.step.schema

uses
    gp,
    Quantity,
    TCollection,
    TColStd,
    TopTools,
    TopLoc,
    TopoDS,
    Interface,
    Transfer,
    XSControl,
    StepData,
    StepBasic,
    StepGeom,
    StepRepr,
    StepShape,
    StepVisual,
    StepAP203,
    StepAP214
is

    class Tool;
    	---Purpose: Basic class providing general features
	
    class UnitContext;
    	---Purpose: Create and investigate context of units and uncertanties

    class Part;
    	---Purpose: Create and investigate data associated with parts (product etc.)
	
    class Assembly;
    	---Purpose: Create and check assembly data structures
    
    class Styles;
    	---Purpose: Create and investigate STEP constructs for styles (mostly colors)
    
    class ValidationProps;
    	---Purpose: Create and investigate STEP constructs for validation properties
    
    class ExternRefs;
    	---Purpose: Work with references to external documents
    
    class AP203Context;
        ---Purpose: maintains context specific to AP203
    
    class ContextTool;
        ---Purpose: Maintains global context tool for writing
	
    --- skl 15.01.2004
    class DataMapOfAsciiStringTransient instantiates 
    	  DataMap from TCollection (AsciiString from TCollection,
	    	    	    	    Transient from Standard,
				    AsciiString from TCollection);

    class PointHasher;
                                                                                                            
    class DataMapOfPointTransient instantiates
    	  DataMap from TCollection (Pnt from gp,
	                            Transient,
		               	    PointHasher from STEPConstruct);


    FindEntity (FinderProcess: FinderProcess from Transfer; Shape: Shape from TopoDS)
    returns RepresentationItem from StepRepr;
    	---Purpose: Returns STEP entity of the (sub)type of RepresentationItem
        --          which is a result of the tranalation of the Shape, or Null if
	--          no result is recorded

    FindEntity (FinderProcess: FinderProcess from Transfer; Shape: Shape from TopoDS;
                               Loc: out Location from TopLoc) 
    returns RepresentationItem from StepRepr;
    	---Purpose: The same as above, but in the case if item not found, repeats
        --          search on the same shape without location. The Loc corresponds to the
        --          location with which result is found (either location of the Shape,
        --          or Null)

    FindShape (TransientProcess: TransientProcess from Transfer; item: RepresentationItem from StepRepr)
    returns Shape from TopoDS;
    	---Purpose: Returns Shape resulting from given STEP entity (Null if not mapped)

    FindCDSR (ComponentBinder: Binder from Transfer;
    	      AssemblySDR: ShapeDefinitionRepresentation from StepShape;
	      ComponentCDSR: out ContextDependentShapeRepresentation from StepShape)
    returns Boolean from Standard;
    	---Purpose: Find CDSR correcponding to the component in the specified assembly

end STEPConstruct;