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380 lines
14 KiB
Plaintext
Executable File
380 lines
14 KiB
Plaintext
Executable File
-- Created on: 1996-08-09
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-- Created by: Herve LOUESSARD
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-- Copyright (c) 1996-1999 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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--modified by Jerome LEMONIER
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--Wed Aug 13 10:46
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--New constructor and new method ComputeAnalysis
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class SurfaceContinuity from LocalAnalysis
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---Purpose:
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-- This class gives tools to check local continuity C0
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-- C1 C2 G1 G2 between two points situated on two surfaces
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uses
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Shape from GeomAbs,
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Boolean, Integer, Real from Standard,
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Surface from Geom,
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SLProps from GeomLProp,
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Curve from Geom,
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Curve from Geom2d,
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StatusErrorType from LocalAnalysis
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raises
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NotDone from StdFail
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is
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Create( Surf1: Surface from Geom; u1, v1: Real from Standard;
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Surf2: Surface from Geom; u2, v2: Real from Standard;
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Order: Shape from GeomAbs;
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EpsNul: Real from Standard= 0.001;
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EpsC0 : Real from Standard= 0.001;
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EpsC1 : Real from Standard= 0.001;
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EpsC2 : Real from Standard= 0.001;
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EpsG1 : Real from Standard= 0.001;
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Percent :Real from Standard= 0.01;
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Maxlen: Real from Standard =10000)
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---Purpose:
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-- -u1,v1 are the parameters of the point on Surf1
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-- -u2,v2 are the parameters of the point on Surf2
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-- -Order is the required continuity:
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-- GeomAbs_C0 GeomAbs_C1 GeomAbs_C2
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-- GeomAbs_G1 GeomAbs_G2
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--
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-- -EpsNul is used to detect a a vector with nul
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-- magnitude
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--
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-- -EpsC0 is used for C0 continuity to confuse two
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-- points (in mm)
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--
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-- -EpsC1 is an angular tolerance in radians used
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-- for C1 continuity to compare the angle between
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-- the first derivatives
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--
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-- -EpsC2 is an angular tolerance in radians used
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-- for C2 continuity to compare the angle between
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-- the second derivatives
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--
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-- -EpsG1 is an angular tolerance in radians used
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-- for G1 continuity to compare the angle between
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-- the normals
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--
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--
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-- -Percent : percentage of curvature variation (unitless)
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-- used for G2 continuity
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--
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-- - Maxlen is the maximum length of Surf1 or Surf2 in
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-- meters used to detect null curvature (in mm)
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--
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--
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--
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-- the constructor computes the quantities which are
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-- necessary to check the continuity in the following cases:
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--
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-- case C0
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-- --------
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-- - the distance between P1 and P2 with P1=Surf (u1,v1) and
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-- P2=Surfv2(u2,v2)
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--
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--
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-- case C1
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-- -------
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--
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-- - the angle between the first derivatives in u :
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--
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-- dSurf1(u1,v1) dSurf2(u2,v2)
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-- ----------- and ---------
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-- du du
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--
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-- the angle value is between 0 and PI/2
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--
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-- - the angle between the first derivatives in v :
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--
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-- dSurf1(u1,v1) dSurf2(u2,v2)
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-- -------- and ---------
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-- dv dv
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--
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-- - the ratio between the magnitudes of the first derivatives in u
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-- - the ratio between the magnitudes of the first derivatives in v
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--
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-- the angle value is between 0 and pi/2
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--
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-- case C2
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-- -------
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-- - the angle between the second derivatives in u
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-- 2 2
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-- d Surf1(u1,v1) d Surf2(u2,v2)
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-- ---------- ----------
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-- 2 2
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-- d u d u
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--
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-- - the ratio between the magnitudes of the second derivatives in u
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-- - the ratio between the magnitudes of the second derivatives in v
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--
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-- the angle value is between 0 and PI/2
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--
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-- case G1
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-- -------
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-- -the angle between the normals at each point
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-- the angle value is between 0 and PI/2
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--
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-- case G2
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-- -------
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-- - the maximum normal curvature gap between the two
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-- points
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--
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returns SurfaceContinuity from LocalAnalysis;
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Create( curv1: Curve from Geom2d; curv2 : Curve from Geom2d;
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U: Real from Standard;Surf1: Surface from Geom ;
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Surf2: Surface from Geom;
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Order: Shape from GeomAbs;
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EpsNul: Real from Standard= 0.001;
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EpsC0 : Real from Standard= 0.001;
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EpsC1 : Real from Standard= 0.001;
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EpsC2 : Real from Standard= 0.001;
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EpsG1 : Real from Standard= 0.001;
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Percent :Real from Standard= 0.01;
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Maxlen: Real from Standard =10000)
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-- - the first point is located by surf1(curv1(U))
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-- - the second point is located by surf2(curv2(U))
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--
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-- - Order is the required continuity:
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-- GeomAbs_C0 GeomAbs_C1 GeomAbs_C2
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-- GeomAbs_G1 GeomAbs_G2
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--
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-- (see the above constructor for the tolerances)
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returns SurfaceContinuity from LocalAnalysis;
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Create( EpsNul: Real from Standard= 0.001;
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EpsC0 : Real from Standard= 0.001;
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EpsC1 : Real from Standard= 0.001;
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EpsC2 : Real from Standard= 0.001;
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EpsG1 : Real from Standard= 0.001;
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Percent :Real from Standard= 0.01;
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Maxlen: Real from Standard =10000)
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returns SurfaceContinuity from LocalAnalysis;
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---Purpose:
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-- This constructor is used when we want to compute many analysis.
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-- After we use the method ComputeAnalysis
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ComputeAnalysis( me:in out; Surf1, Surf2: in out SLProps from GeomLProp;
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Order: Shape from GeomAbs);
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-- This method computes the analysis for two SLProps which contains
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-- the properties of the two surfaces and the two points
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-- Order is the required continuity:
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-- GeomAbs_C0 GeomAbs_C1 GeomAbs_C2
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-- GeomAbs_G1 GeomAbs_G2
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IsDone(me) returns Boolean from Standard;
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-- returns true if there is no problem in the constructor
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ContinuityStatus(me) returns Shape from GeomAbs raises NotDone ;
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-- returns the continuity required in the constructor
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StatusError(me) returns StatusErrorType from LocalAnalysis;
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-- returns the status of error :
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-- NullFirstDerivative : one of the first derivatives is null
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-- NullSecondDerivative: one of the second derivatives is null
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-- NormalNotDefined: one (or both) normal is undefined
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-- CurvatureNotDefined: one of the mean curvatures is undefined
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-- The following functions return the quantities
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-- which are necessary to check continuity
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C0Value(me) returns Real from Standard raises NotDone ;
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-- returns the distance between P1 and P2 with P1=Surf (u1,v1) and
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-- P2=Surfv2(u2,v2)
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C1UAngle(me) returns Real from Standard raises NotDone ;
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-- returns the angle between the first derivatives in u :
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--
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-- dSurf1(u1,v1) dSurf2(u2,v2)
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-- -------- and ---------
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-- du du
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--
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-- the angle value is between 0 and PI/2
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C1URatio (me) returns Real from Standard raises NotDone ;
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-- returns the ratio between the magnitudes of the first
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-- derivatives in u
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--
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--
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C1VAngle(me) returns Real from Standard raises NotDone ;
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-- returns the angle between the first derivatives in v:
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--
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-- dSurf1(u1,v1) dSurf2(u2,v2)
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-- -------- and ---------
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-- dv dv
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--
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-- the angle value is between 0 and PI/2
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C1VRatio(me) returns Real from Standard raises NotDone ;
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-- returns the ratio between the magnitudes of the first
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-- derivatives in v
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C2UAngle(me) returns Real from Standard raises NotDone ;
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-- returns the angle between the second derivatives in u
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-- 2 2
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-- d Surf1(u1,v1) d Surf2(u2,v2)
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-- ---------- and ----------
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-- 2 2
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-- du du
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C2URatio(me) returns Real from Standard raises NotDone ;
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-- returns the ratio between the magnitudes of the second
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-- derivatives in u
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C2VAngle(me) returns Real from Standard raises NotDone ;
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-- returns the angle between the second derivatives in v
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-- 2 2
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-- d Surf1(u1,v1) d Surf2(u2,v2)
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-- ---------- and ----------
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-- 2 2
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-- dv dv
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--
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-- the angle value is between 0 and PI/2
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--
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C2VRatio(me) returns Real from Standard raises NotDone ;
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-- returns the ratio between the magnitudes of the first
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-- derivatives in v
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G1Angle(me) returns Real from Standard raises NotDone ;
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--returns the angle between the normals at the two points
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--
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-- the angle value is between 0 and PI/2
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G2CurvatureGap (me) returns Real from Standard raises NotDone ;
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-- returns the maximum normal curvature gap
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-- the following functions check the local continuity and return
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-- true if the required continuity is satisfied :
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IsC0(me) returns Boolean from Standard
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raises NotDone ;
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-- returns true if the local continuity is C0 that is :
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-- ContC0(me) < EpsC0
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IsC1(me) returns Boolean from Standard
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raises NotDone ;
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-- returns true if the local continuity is C1 that is :
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-- C0Value (me) < EpsC0 ,
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-- C1UAngle (me) < EpsC1
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-- C1VAngle (me) < EpsC1
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IsC2(me) returns Boolean from Standard
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raises NotDone ;
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-- returns true if the local continuity is C2 that is :
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-- C0Value (me) < EpsC0,
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-- C1UAngle(me) < EpsC1
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-- C1VAngle(me) < EpsC1
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-- C2UAngle(me) < EpsC2
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-- C2VAngle(me) < EpsC2
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-- C2URatio(me) is the square of C1URatio up to a tolerance
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-- C2VRatio(me) is the square of C1VRatio up to a tolerance
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--
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IsG1(me) returns Boolean from Standard
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raises NotDone ;
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-- returns true is the local continuity is G1 that is
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-- C0Value(me) < EpsC0
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-- G1Angle(me) < EpsG1
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--
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IsG2(me) returns Boolean from Standard
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raises NotDone ;
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-- returns true is the local continuity is G2
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-- The following function are private and used in the constructor
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SurfC0(me:in out; Surf1, Surf2: SLProps from GeomLProp) is private ;
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SurfC1(me:in out; Surf1, Surf2:in out SLProps from GeomLProp)is private ;
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SurfC2(me:in out; Surf1, Surf2:in out SLProps from GeomLProp)is private;
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SurfG1(me:in out; Surf1, Surf2:in out SLProps from GeomLProp) is private;
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SurfG2(me:in out; Surf1, Surf2:in out SLProps from GeomLProp) is private;
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fields
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myContC0 : Real from Standard;
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myContC1U : Real from Standard;
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myContC1V : Real from Standard;
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myContC2U : Real from Standard;
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myContC2V : Real from Standard;
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myContG1 : Real from Standard;
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myLambda1U : Real from Standard;
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myLambda2U : Real from Standard;
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myLambda1V : Real from Standard;
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myLambda2V : Real from Standard;
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myETA1 : Real from Standard;
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myETA2 : Real from Standard;
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myETA : Real from Standard;
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myZETA1 : Real from Standard;
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myZETA2 : Real from Standard;
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myZETA : Real from Standard;
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myAlpha : Real from Standard;
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myTypeCont : Shape from GeomAbs;
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myepsC0 : Real from Standard;
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myepsnul : Real from Standard;
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myepsC1 : Real from Standard;
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myepsC2 : Real from Standard;
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myepsG1 : Real from Standard;
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myperce : Real from Standard;
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mymaxlen : Real from Standard;
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myGap : Real from Standard;
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myIsDone : Boolean from Standard;
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myErrorStatus : StatusErrorType from LocalAnalysis;
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end SurfaceContinuity;
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