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b311480e | 1 | -- Created on: 1994-02-01 |
2 | -- Created by: Laurent PAINNOT | |
3 | -- Copyright (c) 1994-1999 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 ExtPS from Extrema | |
24 | ||
25 | ---Purpose: It calculates all the extremum distances | |
26 | -- between a point and a surface. | |
27 | -- These distances can be minimum or maximum. | |
28 | ||
29 | uses | |
30 | POnSurf from Extrema, | |
31 | ExtPElS from Extrema, | |
32 | Pnt from gp, | |
33 | SurfaceType from GeomAbs, | |
34 | SequenceOfPOnSurf from Extrema, | |
35 | SequenceOfReal from TColStd, | |
36 | Surface from Adaptor3d, | |
37 | SurfacePtr from Adaptor3d, | |
92d1589b A |
38 | GenExtPS from Extrema, |
39 | ExtFlag from Extrema, | |
40 | ExtAlgo from Extrema | |
7fd59977 | 41 | -- ExtPExtS from Extrema, |
42 | -- ExtPRevS from Extrema | |
43 | ||
44 | ||
45 | raises NotDone from StdFail, | |
46 | OutOfRange from Standard, | |
47 | TypeMismatch from Standard | |
48 | ||
49 | ||
50 | ||
51 | is | |
52 | Create returns ExtPS; | |
53 | ||
54 | ||
92d1589b A |
55 | Create (P: Pnt from gp; S: Surface from Adaptor3d; TolU,TolV: Real; |
56 | F : ExtFlag from Extrema = Extrema_ExtFlag_MINMAX; | |
57 | A : ExtAlgo from Extrema = Extrema_ExtAlgo_Grad) | |
7fd59977 | 58 | returns ExtPS; |
59 | ---Purpose: It calculates all the distances. | |
60 | -- NbU and NbV are used to locate the close points | |
61 | -- to find the zeros. They must be great enough | |
62 | -- such that if there is N extrema, there will | |
63 | -- be N extrema between P and the grid. | |
64 | -- TolU et TolV are used to determine the conditions | |
65 | -- to stop the iterations; at the iteration number n: | |
66 | -- (Un - Un-1) < TolU and (Vn - Vn-1) < TolV . | |
67 | ||
68 | Create (P: Pnt from gp; S: Surface from Adaptor3d; | |
69 | Uinf, Usup, Vinf, Vsup: Real; | |
92d1589b A |
70 | TolU,TolV: Real; |
71 | F : ExtFlag from Extrema = Extrema_ExtFlag_MINMAX; | |
72 | A : ExtAlgo from Extrema = Extrema_ExtAlgo_Grad) | |
7fd59977 | 73 | returns ExtPS; |
74 | ---Purpose: It calculates all the distances. | |
75 | -- NbU and NbV are used to locate the close points | |
76 | -- to find the zeros. They must be great enough | |
77 | -- such that if there is N extrema, there will | |
78 | -- be N extrema between P and the grid. | |
79 | -- TolU et TolV are used to determine the conditions | |
80 | -- to stop the iterations; at the iteration number n: | |
81 | -- (Un - Un-1) < TolU and (Vn - Vn-1) < TolV . | |
82 | ||
83 | ||
84 | Initialize(me: in out; S: Surface from Adaptor3d; | |
85 | Uinf, Usup, Vinf, Vsup: Real; | |
86 | TolU, TolV: Real) | |
87 | ---Purpose: Initializes the fields of the algorithm. | |
88 | ||
89 | is static; | |
90 | ||
91 | Perform(me: in out; P: Pnt from gp) | |
92 | ---Purpose: Computes the distances. | |
93 | -- An exception is raised if the fieds have not been | |
94 | -- initialized. | |
95 | ||
96 | raises TypeMismatch from Standard | |
97 | is static; | |
98 | ||
99 | ||
100 | IsDone (me) returns Boolean | |
101 | ---Purpose: Returns True if the distances are found. | |
102 | is static; | |
103 | ||
104 | NbExt (me) returns Integer | |
105 | ---Purpose: Returns the number of extremum distances. | |
106 | raises NotDone from StdFail | |
107 | -- if IsDone(me)=False. | |
108 | is static; | |
109 | ||
110 | SquareDistance (me; N: Integer) returns Real | |
111 | ---Purpose: Returns the value of the Nth resulting square distance. | |
112 | raises NotDone from StdFail, | |
113 | -- if IsDone(me)=False. | |
114 | OutOfRange | |
115 | -- if N < 1 or N > NbPoints(me). | |
116 | is static; | |
117 | ||
118 | Point (me; N: Integer) returns POnSurf | |
119 | ---Purpose: Returns the point of the Nth resulting distance. | |
120 | raises NotDone from StdFail, | |
121 | -- if IsDone(me)=False. | |
122 | OutOfRange | |
123 | -- if N < 1 or N > NbPoints(me). | |
124 | is static; | |
125 | ||
126 | TrimmedSquareDistances(me; dUfVf, dUfVl, dUlVf, dUlVl: out Real; | |
127 | PUfVf, PUfVl, PUlVf, PUlVl: out Pnt) | |
128 | ---Purpose: if the surface is a trimmed surface, | |
129 | -- dUfVf is a square distance between <P> and the point | |
130 | -- of parameter FirstUParameter and FirstVParameter <PUfVf>. | |
131 | -- dUfVl is a square distance between <P> and the point | |
132 | -- of parameter FirstUParameter and LastVParameter <PUfVl>. | |
133 | -- dUlVf is a square distance between <P> and the point | |
134 | -- of parameter LastUParameter and FirstVParameter <PUlVf>. | |
135 | -- dUlVl is a square distance between <P> and the point | |
136 | -- of parameter LastUParameter and LastVParameter <PUlVl>. | |
137 | is static; | |
92d1589b A |
138 | |
139 | SetFlag(me : in out; F : ExtFlag from Extrema) | |
140 | is static; | |
141 | ||
142 | SetAlgo(me : in out; A : ExtAlgo from Extrema) | |
143 | is static; | |
7fd59977 | 144 | |
145 | ||
146 | Bidon(me) returns SurfacePtr from Adaptor3d | |
147 | is static private; | |
148 | ||
149 | -- modified by NIZHNY-EAP Fri Oct 29 09:44:34 1999 ___BEGIN___ | |
150 | TreatSolution (me:in out; PS: POnSurf from Extrema; | |
151 | Val: Real from Standard) | |
152 | is static private; | |
153 | -- modified by NIZHNY-EAP Fri Oct 29 09:44:37 1999 ___END___ | |
154 | fields | |
155 | myS : SurfacePtr from Adaptor3d; | |
156 | myDone : Boolean from Standard; | |
157 | myExtPElS: ExtPElS from Extrema; | |
158 | myExtPS : GenExtPS from Extrema; | |
159 | myPoints : SequenceOfPOnSurf from Extrema; | |
160 | myuinf : Real from Standard; | |
161 | myusup : Real from Standard; | |
162 | myvinf : Real from Standard; | |
163 | myvsup : Real from Standard; | |
164 | mytolu : Real from Standard; | |
165 | mytolv : Real from Standard; | |
166 | d11 : Real from Standard; | |
167 | d12 : Real from Standard; | |
168 | d21 : Real from Standard; | |
169 | d22 : Real from Standard; | |
170 | P11 : Pnt from gp; | |
171 | P12 : Pnt from gp; | |
172 | P21 : Pnt from gp; | |
173 | P22 : Pnt from gp; | |
174 | mySqDist : SequenceOfReal from TColStd; | |
175 | mytype : SurfaceType from GeomAbs; | |
176 | ||
177 | end ExtPS; |