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1 | -- File: ParTool.cdl |
2 | -- Created: Fri Mar 27 13:16:36 1992 |
3 | -- Author: Laurent BUCHARD |
4 | -- <lbr@topsn3> |
5 | ---Copyright: Matra Datavision 1992 |
6 | |
7 | |
8 | |
9 | deferred generic class ParTool from IntImpParGen |
10 | (ParCurve as any) |
11 | |
12 | ---Purpose: Template class for a tool on a parametrised curve. |
13 | |
14 | uses Pnt2d from gp, |
15 | Vec2d from gp, |
16 | Lin2d from gp |
17 | |
18 | is |
19 | |
20 | |
21 | Value (myclass; C: ParCurve; U: Real from Standard) |
22 | |
23 | ---Purpose: Returns the point at parameter U on the Curve C. |
24 | |
25 | returns Pnt2d from gp; |
26 | |
27 | |
28 | D1 (myclass; C:ParCurve; U:Real from Standard ; |
29 | P: out Pnt2d; T: out Vec2d); |
30 | |
31 | ---Purpose: Computes the Point and the First derivative of |
32 | -- the parametric curve C at parameter U. |
33 | |
34 | |
35 | D2 (myclass; C:ParCurve; U:Real from Standard ; |
36 | P: out Pnt2d; T,N: out Vec2d); |
37 | |
38 | ---Purpose: Computes the Point, the First and the Second derivative of |
39 | -- the parametric curve C at parameter U. |
40 | |
41 | |
42 | EpsX (myclass; C: ParCurve) |
43 | |
44 | ---Purpose: Returns the valuec of the parametric tolerance |
45 | -- on the curve C. |
46 | |
47 | returns Real from Standard; |
48 | |
49 | |
50 | NbSamples(myclass; C: ParCurve) |
51 | |
52 | ---Purpose: NbSamples is the number of sample point used to |
53 | -- polygonise the parametric curve on its domain. |
54 | |
55 | returns Integer from Standard; |
56 | |
57 | |
58 | end ParTool; |
59 | |
60 | |
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