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1 | -- Created on: 1994-02-24 |
2 | -- Created by: Laurent BOURESCHE |
3 | -- Copyright (c) 1994-1999 Matra Datavision |
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4 | -- Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | -- |
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6 | -- This file is part of Open CASCADE Technology software library. |
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7 | -- |
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8 | -- This library is free software; you can redistribute it and / or modify it |
9 | -- under the terms of the GNU Lesser General Public version 2.1 as published |
10 | -- by the Free Software Foundation, with special exception defined in the file |
11 | -- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
12 | -- distribution for complete text of the license and disclaimer of any warranty. |
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13 | -- |
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14 | -- Alternatively, this file may be used under the terms of Open CASCADE |
15 | -- commercial license or contractual agreement. |
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16 | |
17 | class CurveTool from BRepLProp |
18 | |
19 | uses Vec from gp, |
20 | Pnt from gp, |
21 | Dir from gp, |
22 | Curve from BRepAdaptor |
23 | |
24 | is |
25 | |
26 | Value(myclass; C : Curve from BRepAdaptor; U : Real; P : out Pnt); |
27 | ---Purpose: Computes the point <P> of parameter <U> on the curve <C>. |
28 | |
29 | D1 (myclass; C : Curve from BRepAdaptor; |
30 | U : Real; P : out Pnt; V1 : out Vec); |
31 | ---Purpose: Computes the point <P> and first derivative <V1> of |
32 | -- parameter <U> on the curve <C>. |
33 | |
34 | D2 (myclass; C : Curve from BRepAdaptor; |
35 | U : Real; P : out Pnt; V1, V2 : out Vec); |
36 | ---Purpose: Computes the point <P>, the first derivative <V1> and second |
37 | -- derivative <V2> of parameter <U> on the curve <C>. |
38 | |
39 | D3 (myclass; C : Curve from BRepAdaptor; |
40 | U : Real; P : out Pnt; V1, V2, V3 : out Vec); |
41 | ---Purpose: Computes the point <P>, the first derivative <V1>, the |
42 | -- second derivative <V2> and third derivative <V3> of |
43 | -- parameter <U> on the curve <C>. |
44 | |
45 | Continuity(myclass; C : Curve from BRepAdaptor) returns Integer; |
46 | ---Purpose: returns the order of continuity of the curve <C>. |
47 | -- returns 1 : first derivative only is computable |
48 | -- returns 2 : first and second derivative only are computable. |
49 | -- returns 3 : first, second and third are computable. |
50 | |
51 | FirstParameter(myclass; C : Curve from BRepAdaptor) returns Real; |
52 | ---Purpose: returns the first parameter bound of the curve. |
53 | -- |
54 | |
55 | LastParameter(myclass; C : Curve from BRepAdaptor) returns Real; |
56 | ---Purpose: returns the last parameter bound of the curve. |
57 | -- FirstParameter must be less than LastParamenter. |
58 | |
59 | end CurveTool; |
60 | |
61 | |