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-- File: HLRAlgo_Projector.cdl
-- Created: Thu Mar 12 13:32:28 1992
-- Author: Christophe MARION
-- <cma@sdsun2>
---Copyright: Matra Datavision 1992
class Projector from HLRAlgo
---Purpose: Implements a projector object.
-- This object is designed to be used in the
-- removal of hidden lines and is returned by the
-- Prs3d_Projector::Projector function.
-- You define the projection of the selected shape
-- by calling one of the following functions:
-- - HLRBRep_Algo::Projector, or
-- - HLRBRep_PolyAlgo::Projector
-- The choice depends on the algorithm, which you are using.
-- The parameters of the view are defined at the
-- time of construction of a Prs3d_Projector object.
uses
Real from Standard,
Boolean from Standard,
Trsf from gp,
Lin from gp,
Pnt from gp,
Vec from gp,
Ax2 from gp,
Vec2d from gp,
Pnt2d from gp
raises
NoSuchObject from Standard
is
Create returns Projector from HLRAlgo;
Create(CS : Ax2 from gp)
---Purpose: Creates an axonometric projector. <CS> is the
-- viewing coordinate system.
returns Projector from HLRAlgo;
Create(CS : Ax2 from gp;
Focus : Real from Standard)
---Purpose: Creates a perspective projector. <CS> is the
-- viewing coordinate system.
returns Projector from HLRAlgo;
Create(T : Trsf from gp;
Persp : Boolean from Standard;
Focus : Real from Standard)
---Purpose: build a Projector with automatic minmax directions.
returns Projector from HLRAlgo;
Create(T : Trsf from gp;
Persp : Boolean from Standard;
Focus : Real from Standard;
v1,v2,v3 : Vec2d from gp)
---Purpose: build a Projector with given minmax directions.
returns Projector from HLRAlgo;
Set (me: in out ;
T : Trsf from gp;
Persp : Boolean from Standard;
Focus : Real from Standard)
is static;
Directions(me; D1 , D2 , D3 : out Vec2d from gp)
---C++: inline
is static;
Scaled(me : in out; On : Boolean from Standard = Standard_False)
---Purpose: to compute with the given scale and translation.
is static;
Perspective(me) returns Boolean
---Purpose: Returns True if there is a perspective transformation.
---C++: inline
is static;
Transformation(me) returns Trsf from gp
---Purpose: Returns the active transformation.
---C++: return const &
is static;
InvertedTransformation(me) returns Trsf from gp
---Purpose: Returns the active inverted transformation.
---C++: inline
---C++: return const &
is static;
FullTransformation(me) returns Trsf from gp
---Purpose: Returns the original transformation.
---C++: inline
---C++: return const &
is static;
Focus(me) returns Real from Standard
---Purpose: Returns the focal length.
---C++: inline
raises
NoSuchObject from Standard -- if there is no perspective
is static;
Transform(me; D : in out Vec from gp)
---C++: inline
is static;
Transform(me; Pnt : in out Pnt from gp)
---C++: inline
is static;
Project(me; P : Pnt from gp;
Pout : out Pnt2d from gp)
---Purpose: Transform and apply perspective if needed.
is static;
Project(me; P : Pnt from gp;
X,Y,Z : out Real from Standard)
---Purpose: Transform and apply perspective if needed.
is static;
Project(me; P : Pnt from gp;
D1 : Vec from gp;
Pout : out Pnt2d from gp;
D1out : out Vec2d from gp)
---Purpose: Transform and apply perspective if needed.
is static;
Shoot(me; X , Y : Real from Standard)
returns Lin from gp
---Purpose: return a line going through the eye towards the
-- 2d point <X,Y>.
is static;
SetDirection(me: in out)
is static private;
fields
myType : Integer from Standard;
myPersp : Boolean from Standard;
myFocus : Real from Standard;
myScaledTrsf : Trsf from gp;
myTrsf : Trsf from gp;
myInvTrsf : Trsf from gp;
myD1 : Vec2d from gp;
myD2 : Vec2d from gp;
myD3 : Vec2d from gp;
end Projector;
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