| 7fd59977 |
1 | -- File: GeomFill_SnglrFunc.cdl |
| 2 | -- Created: Thu Feb 26 10:42:27 1998 |
| 3 | -- Author: Roman BORISOV |
| 4 | -- <rbv@ecolox.nnov.matra-dtv.fr> |
| 5 | ---Copyright: Matra Datavision 1998 |
| 6 | |
| 7 | |
| 8 | private class SnglrFunc from GeomFill inherits Curve from Adaptor3d |
| 9 | |
| 10 | ---Purpose: to represent function C'(t)^C''(t) |
| 11 | |
| 12 | uses |
| 13 | HCurve from Adaptor3d, |
| 14 | Shape from GeomAbs, |
| 15 | CurveType from GeomAbs, |
| 16 | Array1OfReal from TColStd, |
| 17 | Pnt from gp, |
| 18 | Vec from gp |
| 19 | |
| 20 | raises |
| 21 | OutOfRange from Standard, |
| 22 | DomainError from Standard |
| 23 | |
| 24 | is |
| 25 | Create(HC: HCurve from Adaptor3d) |
| 26 | returns SnglrFunc; |
| 27 | |
| 28 | SetRatio(me:in out; Ratio : Real) |
| 29 | is static; |
| 30 | |
| 31 | FirstParameter(me) returns Real |
| 32 | is redefined static; |
| 33 | |
| 34 | LastParameter(me) returns Real |
| 35 | is redefined static; |
| 36 | |
| 37 | NbIntervals(me: in out; S : Shape from GeomAbs) returns Integer |
| 38 | ---Purpose: Returns the number of intervals for continuity |
| 39 | -- <S>. May be one if Continuity(me) >= <S> |
| 40 | is redefined static; |
| 41 | |
| 42 | Intervals(me: in out; T : in out Array1OfReal from TColStd; |
| 43 | S : Shape from GeomAbs) |
| 44 | ---Purpose: Stores in <T> the parameters bounding the intervals |
| 45 | -- of continuity <S>. |
| 46 | -- |
| 47 | -- The array must provide enough room to accomodate |
| 48 | -- for the parameters. i.e. T.Length() > NbIntervals() |
| 49 | raises |
| 50 | OutOfRange from Standard |
| 51 | is redefined static; |
| 52 | |
| 53 | Value(me; U : Real) returns Pnt from gp |
| 54 | --- Purpose : Computes the point of parameter U on the curve. |
| 55 | is redefined static; |
| 56 | |
| 57 | IsPeriodic(me) returns Boolean |
| 58 | is redefined static; |
| 59 | |
| 60 | Period(me) returns Real |
| 61 | raises |
| 62 | DomainError from Standard -- if the curve is not periodic |
| 63 | is redefined static; |
| 64 | |
| 65 | D0 (me; U : Real; P : out Pnt from gp) |
| 66 | --- Purpose : Computes the point of parameter U on the curve. |
| 67 | is redefined static; |
| 68 | |
| 69 | D1 (me; U : Real; P : out Pnt from gp ; V : out Vec from gp) |
| 70 | --- Purpose : Computes the point of parameter U on the curve with its |
| 71 | -- first derivative. |
| 72 | raises |
| 73 | DomainError from Standard |
| 74 | --- Purpose : Raised if the continuity of the current interval |
| 75 | -- is not C1. |
| 76 | is redefined static; |
| 77 | |
| 78 | D2 (me; U : Real; P : out Pnt from gp; V1, V2 : out Vec from gp) |
| 79 | --- Purpose : |
| 80 | -- Returns the point P of parameter U, the first and second |
| 81 | -- derivatives V1 and V2. |
| 82 | raises |
| 83 | DomainError from Standard |
| 84 | --- Purpose : Raised if the continuity of the current interval |
| 85 | -- is not C2. |
| 86 | is redefined static; |
| 87 | |
| 88 | Resolution(me; R3d : Real) returns Real |
| 89 | ---Purpose : Returns the parametric resolution corresponding |
| 90 | -- to the real space resolution <R3d>. |
| 91 | is redefined static; |
| 92 | |
| 93 | GetType(me) returns CurveType from GeomAbs |
| 94 | ---Purpose: Returns the type of the curve in the current |
| 95 | -- interval : Line, Circle, Ellipse, Hyperbola, |
| 96 | -- Parabola, BezierCurve, BSplineCurve, OtherCurve. |
| 97 | is redefined static; |
| 98 | |
| 99 | fields |
| 100 | |
| 101 | myHCurve: HCurve from Adaptor3d; |
| 102 | ratio : Real; |
| 103 | |
| 104 | end SnglrFunc; |
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