CommitLineData
7fd59977 1-- File: ImpTool.cdl
2-- Created: Thu Mar 26 14:24:05 1992
3-- Author: Laurent BUCHARD
4-- <lbr@topsn3>
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9deferred class ImpTool from IntImpParGen
10
11 ---Purpose: Template class for an implicit curve.
12
13
14uses Pnt2d from gp,
15 Vec2d from gp
16
17is
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19
20 Value (me; U: Real from Standard)
21
22 --Purpose: Computes the point at parameter U on the
23 -- Implicit Curve.
24
25 returns Pnt2d from gp
26 is static;
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29 D1 (me; U: Real from Standard ; P: out Pnt2d; T: out Vec2d)
30
31 --Purpose: Computes the first derivative and the point on the
32 -- implicit curve at parameter U.
33
34 is static;
35
36
37 D2 (me; U: Real from Standard ; P: out Pnt2d; T,N: out Vec2d)
38
39 --Purpose: Computes the first, the second derivatives
40 -- and the point on the implicit curve at parameter U.
41
42 is static;
43
44
45 Distance(me; P: Pnt2d from gp)
46
47 ---Purpose: Computes the value of the signed distance between
48 -- the point P and the implicit curve.
49 --
50
51 returns Real from Standard
52 is static;
53
54
55 GradDistance(me; P: Pnt2d from gp)
56
57 ---Purpose: Computes the Gradient of the Signed Distance
58 -- between a point and the implicit curve, at the
59 -- point P.
60 --
61
62 returns Vec2d from gp
63 is static;
64
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66 FindParameter(me; P: Pnt2d from gp)
67
68 ---Purpose: Returns the parameter U of the point on the
69 -- implicit curve corresponding to the point P.
70 -- The correspondance between P and the point P(U) on
71 -- the implicit curve must be coherent with the way
72 -- of determination of the signed distance.
73
74 returns Real from Standard
75 is static;
76
77
78end ImpTool;
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86