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-- File: Prs3d_Projector.cdl
-- Created: Fri Mar 19 09:51:20 1993
-- Author: Jean-Louis FRENKEL
-- <jlf@phylox>
---Copyright: Matra Datavision 1993
class Projector from Prs3d inherits TShared from MMgt
---Purpose: A projector object.
-- This object defines the parameters of a view for a
-- visualization algorithm. It is, for example, used by the
-- hidden line removal algorithms.
uses
Projector from HLRAlgo,
Length from Quantity
is
Create(Pr: Projector from HLRAlgo)
returns mutable Projector from Prs3d;
Create ( Pers: Boolean from Standard;
Focus: Length from Quantity;
DX, DY, DZ: Length from Quantity; -- Projection Vector
XAt, YAt , ZAt: Length from Quantity; -- View Point
XUp, YUp, ZUp: Length from Quantity) -- High Point Direction
returns mutable Projector from Prs3d;
--- Purpose: Constructs a projector framework from the following parameters
-- - Pers is true if the view is a perspective view and
-- false if it is an axonometric one;
-- - Focus is the focal length if a perspective view is defined;
-- - DX, DY and DZ are the coordinates of the
-- projection vector;
-- - XAt, YAt and ZAt are the coordinates of the view point;
-- - XUp, YUp and ZUp are the coordinates of the
-- vertical direction vector.
Projector(me) returns Projector from HLRAlgo
is static;
---Purpose: Returns a projector object for use in a hidden line removal algorithm.
fields
MyProjector: Projector from HLRAlgo;
end Projector;
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