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-- File: Graphic2d_InfiniteLine.cdl
-- Created: Tue Jun 22 16:36:51 1993
-- Author: Jean Louis FRENKEL, Gerard GRAS
-- <jlf@stylox>
-- Modified: TCL G002A, 28-11-00, new section "inquire methods"
---Copyright: Matra Datavision 1993
class InfiniteLine from Graphic2d inherits Line from Graphic2d
---Version:
---Purpose: The primitive InfiniteLine
---Keywords: Primitive, InfiniteLine
---Warning:
---References:
uses
Drawer from Graphic2d,
GraphicObject from Graphic2d,
Length from Quantity,
FStream from Aspect,
IFStream from Aspect
raises
InfiniteLineDefinitionError from Graphic2d
is
-------------------------
-- Category: Constructors
-------------------------
Create (aGraphicObject: GraphicObject from Graphic2d;
X, Y, DX, DY: Length from Quantity)
returns mutable InfiniteLine from Graphic2d
---Level: Public
---Purpose: Creates an infinite line.
-- The reference point is <X>, <Y>.
-- The slope is <DX>, <DY>.
-- Warning: Raises InfiniteLineDefinitionError if the
-- <DX> and <DY> are null.
raises InfiniteLineDefinitionError from Graphic2d;
--------------------------
-- Category: Draw and Pick
--------------------------
Draw (me : mutable; aDrawer: Drawer from Graphic2d)
is static protected;
---Level: Internal
---Purpose: Draws the infinite line <me>.
Pick (me : mutable; X, Y: ShortReal from Standard;
aPrecision: ShortReal from Standard;
aDrawer: Drawer from Graphic2d)
returns Boolean from Standard is static protected;
---Level: Internal
---Purpose: Returns Standard_True if the infinite line <me> is picked,
-- Standard_False if not.
--------------------------------------
-- Category: Inquire methods
--------------------------------------
Reference( me; X, Y: out Length from Quantity );
---Level: Public
---Purpose: returns the coordinates of the reference point
Slope( me; dX, dY: out Length from Quantity );
---Level: Public
---Purpose: returns the slope <dX>, <dY>
----------------------------------------------------------------------
Save( me; aFStream: in out FStream from Aspect ) is virtual;
Retrieve(myclass; anIFStream: in out IFStream from Aspect;
aGraphicObject: GraphicObject from Graphic2d);
fields
myX: ShortReal from Standard;
myY: ShortReal from Standard;
myDX: ShortReal from Standard;
myDY: ShortReal from Standard;
end InfiniteLine from Graphic2d;
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