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-- File: AIS_MidPointRelation.cdl
-- Created: Fri Oct 20 15:57:32 2000
-- Author: Julia DOROVSKIKH
-- <jfa@androx.nnov.matra-dtv.fr>
---Copyright: Matra Datavision 2000
class MidPointRelation from AIS inherits Relation from AIS
---Purpose: presentation of equal distance to point myMidPoint
uses
ExtendedString from TCollection,
Projector from Prs3d,
Presentation from Prs3d,
PresentationManager2d from PrsMgr,
PresentationManager3d from PrsMgr,
Selection from SelectMgr,
GraphicObject from Graphic2d,
Dir from gp,
Pnt from gp,
Lin from gp,
Circ from gp,
Elips from gp,
Plane from Geom,
Transformation from Geom,
Shape from TopoDS
is
Create(aSymmTool : Shape from TopoDS;
FirstShape : Shape from TopoDS;
SecondShape : Shape from TopoDS;
aPlane : Plane from Geom)
returns mutable MidPointRelation from AIS;
IsMovable(me) returns Boolean from Standard
---C++: inline
is redefined;
SetTool(me: mutable; aMidPointTool : Shape from TopoDS);
---C++: inline
GetTool(me)
---C++: inline
---C++: return const &
returns Shape from TopoDS;
-- Methods from PresentableObject
Compute(me: mutable;
aPresentationManager: PresentationManager3d from PrsMgr;
aPresentation : mutable Presentation from Prs3d;
aMode : Integer from Standard= 0)
is redefined static 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 private;
-- Computation private methods
ComputeFaceFromPnt(me: mutable; aprs : mutable Presentation from Prs3d; first : Boolean from Standard)
is private;
ComputeEdgeFromPnt(me: mutable; aprs : mutable Presentation from Prs3d; first : Boolean from Standard)
is private;
ComputeVertexFromPnt(me: mutable; aprs : mutable Presentation from Prs3d; first : Boolean from Standard)
is private;
ComputePointsOnLine(me: mutable; aLin : Lin from gp;
first : Boolean from Standard)
is private;
ComputePointsOnLine(me: mutable; pnt1,pnt2 : Pnt from gp;
first : Boolean from Standard)
is private;
ComputePointsOnCirc(me: mutable; aCirc : Circ from gp; pnt1,pnt2 : Pnt from gp;
first : Boolean from Standard)
is private;
ComputePointsOnElips(me: mutable; anEll : Elips from gp; pnt1,pnt2 : Pnt from gp;
first : Boolean from Standard)
is private;
---Purpose: ComputePointsOn... methods set myFAttach, myFirstPnt and myLastPnt
-- from the following initial data: curve, end points, myMidPoint.
-- End points (pnt1 & pnt2) and curve define the trimmed curve.
-- If end points are equal, curve is not trimmed (line - special case).
--
-- .------. pnt2
-- / \
-- . circle . myLastPnt
-- | |
-- . pnt1 . myFAttach
-- \ arc / . myMidPoint
-- .______. myFirstPnt
fields
myTool : Shape from TopoDS;
myMidPoint : Pnt from gp; -- point of symmetry
myFAttach : Pnt from gp; -- position on myFShape to be connected with myMidPoint by segment
myFirstPnt1 : Pnt from gp; -- points on myFShape,
myFirstPnt2 : Pnt from gp; -- defining a segment of it to be drawn
mySAttach : Pnt from gp; -- position on mySShape to be connected with myMidPoint by segment
mySecondPnt1 : Pnt from gp; -- points on mySShape,
mySecondPnt2 : Pnt from gp; -- defining a segment of it to be drawn
end MidPointRelation;
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