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1 | -- Created on: 1995-07-18 |
2 | -- Created by: Modelistation |
3 | -- Copyright (c) 1995-1999 Matra Datavision |
4 | -- Copyright (c) 1999-2012 OPEN CASCADE SAS |
5 | -- |
6 | -- The content of this file is subject to the Open CASCADE Technology Public |
7 | -- License Version 6.5 (the "License"). You may not use the content of this file |
8 | -- except in compliance with the License. Please obtain a copy of the License |
9 | -- at http://www.opencascade.org and read it completely before using this file. |
10 | -- |
11 | -- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its |
12 | -- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. |
13 | -- |
14 | -- The Original Code and all software distributed under the License is |
15 | -- distributed on an "AS IS" basis, without warranty of any kind, and the |
16 | -- Initial Developer hereby disclaims all such warranties, including without |
17 | -- limitation, any warranties of merchantability, fitness for a particular |
18 | -- purpose or non-infringement. Please see the License for the specific terms |
19 | -- and conditions governing the rights and limitations under the License. |
20 | |
7fd59977 |
21 | |
22 | |
23 | class GenLocateExtPS from Extrema |
24 | |
25 | ---Purpose: With a close point, it calculates the distance |
26 | -- between a point and a surface. |
27 | -- This distance can be a minimum or a maximum. |
28 | |
29 | uses POnSurf from Extrema, |
30 | Pnt from gp, |
31 | Surface from Adaptor3d |
32 | |
33 | raises DomainError from Standard, |
34 | NotDone from StdFail |
35 | |
36 | |
37 | is |
38 | Create returns GenLocateExtPS; |
39 | |
40 | Create (P: Pnt; S: Surface from Adaptor3d; U0,V0: Real; TolU,TolV: Real) |
41 | returns GenLocateExtPS |
42 | ---Purpose: Calculates the distance with a close point. |
43 | -- The close point is defined by the parameter values |
44 | -- U0 and V0. |
45 | -- The function F(u,v)=distance(S(u,v),p) has an |
46 | -- extremun when gradient(F)=0. The algorithm searchs |
47 | -- a zero near the close point. |
48 | raises DomainError; |
49 | -- if U0,V0 are outside the definition ranges of the |
50 | -- surface. |
51 | |
52 | IsDone (me) returns Boolean |
53 | ---Purpose: Returns True if the distance is found. |
54 | is static; |
55 | |
56 | SquareDistance (me) returns Real |
57 | ---Purpose: Returns the value of the extremum square distance. |
58 | raises NotDone from StdFail |
59 | -- if IsDone(me)=False. |
60 | is static; |
61 | |
62 | Point (me) returns POnSurf |
63 | ---Purpose: Returns the point of the extremum distance. |
64 | raises NotDone from StdFail |
65 | -- if IsDone(me)=False. |
66 | is static; |
67 | |
68 | fields |
69 | myDone : Boolean; |
70 | mySqDist: Real; |
71 | myPoint: POnSurf from Extrema; |
72 | |
73 | end GenLocateExtPS; |