7fd59977 |
1 | -- File: ExtElC.cdl |
2 | -- Created: Thu Feb 21 18:49:13 1991 |
3 | -- Author: Isabelle GRIGNON |
4 | -- <isg@topsn3> |
5 | ---Copyright: Matra Datavision 1991 |
6 | |
7 | |
8 | class ExtElC from Extrema |
9 | ---Purpose: It calculates all the distance between two elementary |
10 | -- curves. |
11 | -- These distances can be maximum or minimum. |
12 | |
13 | uses Circ from gp, |
14 | Elips from gp, |
15 | Hypr from gp, |
16 | Lin from gp, |
17 | Parab from gp, |
18 | POnCurv from Extrema |
19 | |
20 | raises InfiniteSolutions from StdFail, |
21 | NotDone from StdFail, |
22 | OutOfRange from Standard |
23 | |
24 | is |
25 | Create returns ExtElC; |
26 | |
27 | Create (C1,C2: Lin; AngTol: Real) returns ExtElC; |
28 | ---Purpose: Calculates the distance between two lines. |
29 | -- AngTol is used to test if the lines are parallel: |
30 | -- Angle(C1,C2) < AngTol. |
31 | |
32 | Create (C1: Lin; C2: Circ; Tol: Real) returns ExtElC; |
33 | ---Purpose: Calculates the distance between a line and a |
34 | -- circle. |
35 | |
36 | Create (C1: Lin; C2: Elips) returns ExtElC; |
37 | ---Purpose: Calculates the distance between a line and an |
38 | -- elipse. |
39 | |
40 | Create (C1: Lin; C2: Hypr) returns ExtElC; |
41 | ---Purpose: Calculates the distance between a line and a |
42 | -- hyperbola. |
43 | |
44 | Create (C1: Lin; C2: Parab) returns ExtElC; |
45 | ---Purpose: Calculates the distance between a line and a |
46 | -- parabola. |
47 | |
48 | Create (C1,C2: Circ) returns ExtElC; |
49 | ---Purpose: Calculates the distance between two circles. |
50 | -- The circles can be parallel or identical. |
51 | |
52 | Create (C1: Circ; C2: Elips) returns ExtElC; |
53 | ---Purpose: Calculates the distance between a circle and an |
54 | -- elipse. |
55 | |
56 | Create (C1: Circ; C2: Hypr) returns ExtElC; |
57 | ---Purpose: Calculates the distance between a circle and a |
58 | -- hyperbola. |
59 | |
60 | Create (C1: Circ; C2: Parab) returns ExtElC; |
61 | ---Purpose: Calculates the distance between a circle and a |
62 | -- parabola. |
63 | |
64 | Create (C1,C2: Elips) returns ExtElC; |
65 | ---Purpose: Calculates the distance between two elipses. |
66 | -- The elipses can be parallel or identical. |
67 | |
68 | Create (C1: Elips; C2: Hypr) returns ExtElC; |
69 | ---Purpose: Calculates the distance between an elipse and a |
70 | -- hyperbola. |
71 | |
72 | Create (C1: Elips; C2: Parab) returns ExtElC; |
73 | ---Purpose: Calculates the distance between an elipse and a |
74 | -- parabola. |
75 | |
76 | Create (C1,C2: Hypr) returns ExtElC; |
77 | ---Purpose: Calculates the distance between two hyperbolas. |
78 | -- The hyperbolas can be parallel or identical. |
79 | |
80 | Create (C1: Hypr; C2: Parab) returns ExtElC; |
81 | ---Purpose: Calculates the distance between a hyperbola and a |
82 | -- parabola. |
83 | |
84 | Create (C1,C2: Parab) returns ExtElC; |
85 | ---Purpose: Calculates the distance between two parabolas |
86 | -- The parabolas can be parallel or identical. |
87 | |
88 | IsDone (me) returns Boolean |
89 | ---Purpose: Returns True if the distances are found. |
90 | is static; |
91 | |
92 | IsParallel (me) returns Boolean |
93 | ---Purpose: Returns True if the two curves are parallel. |
94 | raises NotDone from StdFail |
95 | -- if IsDone(me)=False. |
96 | is static; |
97 | |
98 | NbExt (me) returns Integer |
99 | ---Purpose: Returns the number of extremum distances. |
100 | raises NotDone from StdFail, |
101 | -- if IsDone(me)=False. |
102 | InfiniteSolutions from StdFail |
103 | -- if IsParallel(me)= True. |
104 | is static; |
105 | |
106 | SquareDistance (me; N: Integer =1) returns Real |
107 | ---Purpose: Returns the value of the Nth extremum square distance. |
108 | raises NotDone from StdFail, |
109 | -- if IsDone(me)=False. |
110 | InfiniteSolutions from StdFail, |
111 | -- if IsParallel(me)= True and N > 1. |
112 | OutOfRange from Standard |
113 | -- if N < 1 or N > NbExt(me) |
114 | is static; |
115 | |
116 | Points (me; N: Integer; P1,P2: out POnCurv) |
117 | ---Purpose: Returns the points of the Nth extremum distance. |
118 | -- P1 is on the first curve, P2 on the second one. |
119 | raises NotDone from StdFail, |
120 | -- if IsDone(me)=False. |
121 | InfiniteSolutions from StdFail, |
122 | -- if IsParallel(me)= True. |
123 | OutOfRange from Standard |
124 | -- if N < 1 or N > NbExt(me) |
125 | is static; |
126 | |
127 | fields |
128 | myDone : Boolean; |
129 | myIsPar: Boolean; |
130 | myNbExt: Integer; |
131 | --modified by NIZNHY-PKV Fri Nov 21 10:47:21 2008 ft |
132 | -- it was *[4] |
133 | mySqDist: Real [6]; |
134 | myPoint: POnCurv from Extrema [6,2]; |
135 | |
136 | end ExtElC; |