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1 | -- Created on: 1993-05-19 |
2 | -- Created by: Laurent PAINNOT |
3 | -- Copyright (c) 1993-1999 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 | |
24 | generic class SurfLeastSquare from AppCont(Surface as any; |
25 | SurfTool as any) |
26 | ---as TheSurfTool(Surface) |
27 | |
28 | ---Purpose: |
29 | |
30 | |
31 | uses Matrix from math, |
32 | Vector from math, |
33 | Constraint from AppParCurves, |
34 | MultiCurve from AppParCurves, |
35 | BezierSurface from Geom |
36 | |
37 | |
38 | raises NotDone from StdFail, |
39 | OutOfRange from Standard, |
40 | DimensionError from Standard |
41 | |
42 | |
43 | |
44 | is |
45 | |
46 | Create(Surf: Surface; U0, U1, V0, V1: Real; |
47 | FirstCons, LastUCons, LastVCons, LastCons: Constraint; |
48 | DegU, DegV: Integer; NbPoints: Integer = 12) |
49 | ---Purpose: given a MultiLine, this algorithm computes the |
50 | -- approximation of a continous Surface into a bezier |
51 | -- Surface. |
52 | -- The algorithm minimizes the volume between the |
53 | -- Surface Surf and the Bezier Surface doing the |
54 | -- aproximation. |
55 | -- NbPoints * NbPoints are taken on the Surface Surf. |
56 | -- The Constraints are affected to the following points: |
57 | -- |
58 | -- U0, V0 |--|---|---|---|---|---|-----| U1, V0 |
59 | -- FirstCons | | | | | | | LastUCons |
60 | -- |--|---|---|---|---|---|-----| |
61 | -- |--|---|---|---|---|---|-----| |
62 | -- | | | | | | | | |
63 | -- U0, V1 |--|---|---|---|---|---|-----| U1, V1 |
64 | -- LastVCons LastCons |
65 | |
66 | |
67 | returns SurfLeastSquare from AppCont |
68 | raises DimensionError from Standard; |
69 | |
70 | |
71 | |
72 | IsDone(me) |
73 | ---Purpose: returns True if all has been correctly done. |
74 | |
75 | returns Boolean |
76 | is static; |
77 | |
78 | |
79 | Value(me: in out) |
80 | ---Purpose: returns the result of the approximation. |
81 | -- An exception is raised if NotDone. |
82 | ---C++: return const & |
83 | |
84 | returns BezierSurface from Geom |
85 | raises NotDone from StdFail |
86 | is static; |
87 | |
88 | |
89 | |
90 | Error(me; F: in out Real; MaxE3d: in out Real) |
91 | ---Purpose: F is the sum of the square errors at each of the |
92 | -- NbPoints*NbPoints and MaxE3d is the maximum value |
93 | -- of these errors. |
94 | -- An exception is raised if NotDone. |
95 | |
96 | raises NotDone from StdFail |
97 | is static; |
98 | |
99 | |
100 | |
101 | fields |
102 | |
103 | Done: Boolean; |
104 | SCU: BezierSurface from Geom; |
105 | DegreU: Integer; |
106 | DegreV: Integer; |
107 | Nbdiscret: Integer; |
108 | nbP: Integer; |
109 | PointsX: Matrix; |
110 | PointsY: Matrix; |
111 | PointsZ: Matrix; |
112 | PolesX: Vector; |
113 | PolesY: Vector; |
114 | PolesZ: Vector; |
115 | myUParam: Vector; |
116 | myVParam: Vector; |
117 | VBU: Matrix; |
118 | VBV: Matrix; |
119 | |
120 | end SurfLeastSquare from AppCont; |
121 | |