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190 lines
7.4 KiB
Plaintext
Executable File
190 lines
7.4 KiB
Plaintext
Executable File
-- Created on: 1994-03-24
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-- Created by: Bruno DUMORTIER
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-- Copyright (c) 1994-1999 Matra Datavision
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-- Copyright (c) 1999-2012 OPEN CASCADE SAS
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--
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-- The content of this file is subject to the Open CASCADE Technology Public
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-- License Version 6.5 (the "License"). You may not use the content of this file
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-- except in compliance with the License. Please obtain a copy of the License
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-- at http://www.opencascade.org and read it completely before using this file.
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--
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-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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--
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-- The Original Code and all software distributed under the License is
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-- distributed on an "AS IS" basis, without warranty of any kind, and the
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-- Initial Developer hereby disclaims all such warranties, including without
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-- limitation, any warranties of merchantability, fitness for a particular
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-- purpose or non-infringement. Please see the License for the specific terms
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-- and conditions governing the rights and limitations under the License.
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class InterCurveCurve from Geom2dAPI
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---Purpose: This class implements methods for computing
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-- - the intersections between two 2D curves,
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-- - the self-intersections of a 2D curve.
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-- Using the InterCurveCurve algorithm allows to get the following results:
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-- - intersection points in the case of cross intersections,
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-- - intersection segments in the case of tangential intersections,
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-- - nothing in the case of no intersections.
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uses
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Curve from Geom2d,
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Pnt2d from gp,
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GInter from Geom2dInt
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raises
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OutOfRange from Standard,
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NullObject from Standard
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is
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Create
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---Purpose: Create an empty intersector. Use the
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-- function Init for further initialization of the intersection
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-- algorithm by curves or curve.
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---Level: Public
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returns InterCurveCurve from Geom2dAPI;
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Create(C1 : Curve from Geom2d;
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C2 : Curve from Geom2d;
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Tol : Real from Standard = 1.0e-6)
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---Purpose: Creates an object and computes the
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-- intersections between the curves C1 and C2.
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returns InterCurveCurve from Geom2dAPI;
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Create(C1 : Curve from Geom2d;
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Tol : Real from Standard = 1.0e-6)
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---Purpose:
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-- Creates an object and computes self-intersections of the curve C1.
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-- Tolerance value Tol, defaulted to 1.0e-6, defines the precision of
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-- computing the intersection points.
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-- In case of a tangential intersection, Tol also defines the
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-- size of intersection segments (limited portions of the curves)
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-- where the distance between all points from two curves (or a curve
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-- in case of self-intersection) is less than Tol.
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-- Warning
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-- Use functions NbPoints and NbSegments to obtain the number of
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-- solutions. If the algorithm finds no intersections NbPoints and
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-- NbSegments return 0.
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returns InterCurveCurve from Geom2dAPI;
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Init( me : in out;
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C1 : Curve from Geom2d;
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C2 : Curve from Geom2d;
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Tol : Real from Standard = 1.0e-6)
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---Purpose: Initializes an algorithm with the
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-- given arguments and computes the intersections between the curves C1. and C2.
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is static;
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Init( me : in out;
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C1 : Curve from Geom2d;
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Tol : Real from Standard = 1.0e-6)
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---Purpose: Initializes an algorithm with the
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-- given arguments and computes the self-intersections of the curve C1.
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-- Tolerance value Tol, defaulted to 1.0e-6, defines the precision of
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-- computing the intersection points. In case of a tangential
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-- intersection, Tol also defines the size of intersection segments
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-- (limited portions of the curves) where the distance between all
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-- points from two curves (or a curve in case of self-intersection) is less than Tol.
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-- Warning
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-- Use functions NbPoints and NbSegments to obtain the number
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-- of solutions. If the algorithm finds no intersections NbPoints
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-- and NbSegments return 0.
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is static;
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NbPoints(me)
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returns Integer from Standard
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---Purpose: Returns the number of intersection-points in case of cross intersections.
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-- NbPoints returns 0 if no intersections were found.
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is static;
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Point(me; Index : Integer from Standard)
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returns Pnt2d from gp
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---Purpose: Returns the intersection point of index Index.
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-- Intersection points are computed in case of cross intersections with a
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-- precision equal to the tolerance value assigned at the time of
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-- construction or in the function Init (this value is defaulted to 1.0e-6).
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-- Exceptions
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-- Standard_OutOfRange if index is not in the range [ 1,NbPoints ], where
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-- NbPoints is the number of computed intersection points
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raises
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OutOfRange from Standard
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is static;
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NbSegments(me)
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returns Integer from Standard
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---Purpose: Returns the number of tangential intersections.
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-- NbSegments returns 0 if no intersections were found
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is static;
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Segment(me; Index : Integer from Standard;
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Curve1, Curve2 : in out Curve from Geom2d)
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---Purpose: Use this syntax only to get
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-- solutions of tangential intersection between two curves.
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-- Output values Curve1 and Curve2 are the intersection segments on the
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-- first curve and on the second curve accordingly. Parameter Index
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-- defines a number of computed solution.
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-- An intersection segment is a portion of an initial curve limited
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-- by two points. The distance from each point of this segment to the
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-- other curve is less or equal to the tolerance value assigned at the
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-- time of construction or in function Init (this value is defaulted to 1.0e-6).
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-- Exceptions
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-- Standard_OutOfRange if Index is not in the range [ 1,NbSegments ],
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-- where NbSegments is the number of computed tangential intersections.
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-- Standard_NullObject if the algorithm is initialized for the
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-- computing of self-intersections on a curve.
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raises
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OutOfRange from Standard,
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NullObject from Standard
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is static;
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Segment(me; Index : Integer from Standard;
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Curve1 : in out Curve from Geom2d)
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---Purpose: Use this syntax to get solutions of
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-- tangential intersections only in case of a self-intersected curve.
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-- Output value Curve1 is the intersection segment of the curve
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-- defined by number Index. An intersection segment is a
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-- portion of the initial curve limited by two points. The distance
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-- between each point of this segment to another portion of the curve is
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-- less or equal to the tolerance value assigned at the time of
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-- construction or in the function Init (this value is defaulted to 1.0e-6).
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-- Exceptions
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-- Standard_OutOfRange if Index is not in the range [ 1,NbSegments ],
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-- where NbSegments is the number of computed tangential intersections.
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raises
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OutOfRange from Standard
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is static;
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Intersector(me)
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---Purpose: return the algorithmic object from Intersection.
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---Level: Advanced
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returns GInter from Geom2dInt
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---C++: return const &
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---C++: inline
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is static;
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fields
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myIsDone : Boolean from Standard;
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myCurve1 : Curve from Geom2d;
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myCurve2 : Curve from Geom2d;
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myIntersector : GInter from Geom2dInt;
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end InterCurveCurve;
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