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-- File: AIS_RadiusDimension.cdl
-- Created: Tue Dec 3 17:56:20 1996
-- Author: Jean-Pierre COMBE/Odile Olivier
-- <odl@sacadox.paris1.matra-dtv.fr>
-- modified by <SZY> feb-20-98
---Copyright: Matra Datavision 1996
class RadiusDimension from AIS inherits Relation from AIS
---Purpose: A framework to define display of radii.
-- These displays serve as relational references in 3D
-- presentations of surfaces, and are particularly useful
-- in viewing fillets. The display consists of arrows and
-- text giving the length of a radius. This display is
-- recalculated if the applicative owner shape changes
-- in dimension, and the text gives the modified length.
-- The algorithm analyzes a length along a face as an
-- arc. It then reconstructs the circle corresponding to
-- the arc and calculates the radius of this circle.
uses Shape from TopoDS,
Presentation from Prs3d,
PresentationManager3d from PrsMgr,
Selection from SelectMgr,
Pnt from gp,
Lin from gp,
Circ from gp,
Projector from Prs3d,
Transformation from Geom,
PresentationManager2d from PrsMgr,
GraphicObject from Graphic2d,
ExtendedString from TCollection,
ArrowSide from DsgPrs,
KindOfDimension from AIS
is
Create (aShape : Shape from TopoDS;
aVal : Real from Standard;
aText : ExtendedString from TCollection)
---Purpose: Constructs the radius display object defined by the
-- shape aShape, the dimension aVal, and the text aText.
returns mutable RadiusDimension from AIS;
Create (aShape : Shape from TopoDS;
aVal : Real from Standard;
aText : ExtendedString from TCollection;
aPosition : Pnt from gp;
aSymbolPrs : ArrowSide from DsgPrs;
anArrowSize : Real from Standard = 0.0)
---Purpose: Constructs radius display object defined by the shape
-- aShape, the dimension aVal, the position aPosition,
-- the type of arrow aSymbolPrs, the arrow length
-- anArrowSize and the text aText.
returns mutable RadiusDimension from AIS;
SetFirstShape( me: mutable; aFShape : Shape from TopoDS )
is redefined static;
KindOfDimension(me)
---Purpose: Indicates that the dimension selected is a radius.
---C++: inline
returns KindOfDimension from AIS
is redefined;
IsMovable(me) returns Boolean from Standard
---C++: inline
---Purpose: Returns true if the radius selected is movable.
is redefined;
DrawFromCenter(me) returns Boolean from Standard
---Purpose:
-- Draws an arrowhead pointing towards the center of
-- the shape aShape defined at construction time if
-- false, and away from the center if true.
---C++: inline
is static;
SetDrawFromCenter(me: mutable;
drawfromcenter : Boolean from Standard)
---C++: inline
---Purpose:
-- Sets the Boolean drawfromcenter to true or false.
-- If drawfromcenter is false, the arrowhead will point
-- towards the center of the shape aShape defined at
-- construction time.
is static;
-- Methods from PresentableObject
Compute(me : mutable;
aPresentationManager: PresentationManager3d from PrsMgr;
aPresentation : mutable Presentation from Prs3d;
aMode : Integer from Standard= 0)
is redefined private;
Compute(me:mutable;
aProjector: Projector from Prs3d;
aPresentation: mutable Presentation from Prs3d)
is redefined static private;
Compute(me:mutable;
aPresentationManager: PresentationManager2d from PrsMgr;
aPresentation: mutable GraphicObject from Graphic2d;
aMode: Integer from Standard = 0)
is redefined static private;
Compute(me : mutable;
aProjector : Projector from Prs3d;
aTrsf : Transformation from Geom;
aPresentation : mutable Presentation from Prs3d)
is redefined;
---Purpose: computes the presentation according to a point of view
-- given by <aProjector>.
-- To be Used when the associated degenerated Presentations
-- have been transformed by <aTrsf> which is not a Pure
-- Translation. The HLR Prs can't be deducted automatically
-- WARNING :<aTrsf> must be applied
-- to the object to display before computation !!!
-- Methods from SelectableObject
ComputeSelection(me : mutable;
aSelection : mutable Selection from SelectMgr;
aMode : Integer from Standard)
is redefined private;
--
-- Computation private methods
--
ComputeRadius( me: mutable; aPresentation : mutable Presentation from Prs3d )
is private;
InitFirstShape( me: mutable)
is static private;
fields
myCircle : Circ from gp;
myFirstPar : Real from Standard;
myLastPar : Real from Standard;
myCenter : Pnt from gp;
myEndOfArrow : Pnt from gp;
myFirstLine : Lin from gp;
myLastLine : Lin from gp;
mydrawFromCenter : Boolean from Standard;
end RadiusDimension;
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