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0022627: Change OCCT memory management defaults
[occt.git] / src / GccAna / GccAna_Circ2d3Tan_5.cxx
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7fd59977 1// File GccAna_Circ2d3Tan.cxx_5, REG 08/07/91
2// init. de MinRad et MaxRad (PRO15604), JCT 09/10/98
3
4#include <GccAna_Circ2d3Tan.jxx>
5
6#include <ElCLib.hxx>
7#include <IntAna2d_AnaIntersection.hxx>
8#include <IntAna2d_IntPoint.hxx>
9#include <gp_Lin2d.hxx>
10#include <gp_Circ2d.hxx>
11#include <gp_Dir2d.hxx>
12#include <TColStd_Array1OfReal.hxx>
13#include <GccAna_CircLin2dBisec.hxx>
14#include <GccAna_LinPnt2dBisec.hxx>
15#include <GccInt_IType.hxx>
16#include <GccInt_BLine.hxx>
17#include <GccInt_BParab.hxx>
18#include <IntAna2d_Conic.hxx>
19#include <GccEnt_BadQualifier.hxx>
20
0d969553
Y		 21//===========================================================================
22// Creation of a circle tangent to a circle, a straight line and a point. +
23//===========================================================================
7fd59977 24
25GccAna_Circ2d3Tan::
26 GccAna_Circ2d3Tan (const GccEnt_QualifiedCirc& Qualified1 ,
27 const GccEnt_QualifiedLin& Qualified2 ,
28 const gp_Pnt2d& Point3 ,
29 const Standard_Real Tolerance ):
30
31//=========================================================================
0d969553 32// Initialization of fields. +
7fd59977 33//=========================================================================
34
35 cirsol(1,4) ,
36 qualifier1(1,4) ,
37 qualifier2(1,4) ,
38 qualifier3(1,4) ,
39 TheSame1(1,4) ,
40 TheSame2(1,4) ,
41 TheSame3(1,4) ,
42 pnttg1sol(1,4) ,
43 pnttg2sol(1,4) ,
44 pnttg3sol(1,4) ,
45 par1sol(1,4) ,
46 par2sol(1,4) ,
47 par3sol(1,4) ,
48 pararg1(1,4) ,
49 pararg2(1,4) ,
50 pararg3(1,4)
51{
52
53 gp_Dir2d dirx(1.0,0.0);
54 Standard_Real Tol = Abs(Tolerance);
55 Standard_Real MaxRad = 1e10, MinRad = 1e-6;
56 WellDone = Standard_False;
57 NbrSol = 0;
58 if (!(Qualified1.IsEnclosed() || Qualified1.IsEnclosing() ||
59 Qualified1.IsOutside() || Qualified1.IsUnqualified()) ||
60 !(Qualified2.IsEnclosed() ||
61 Qualified2.IsOutside() || Qualified2.IsUnqualified())) {
62 GccEnt_BadQualifier::Raise();
63 return;
64 }
65
66//=========================================================================
0d969553 67// Processing. +
7fd59977 68//=========================================================================
69
70 gp_Circ2d C1(Qualified1.Qualified());
71 gp_Lin2d L2(Qualified2.Qualified());
72 Standard_Real R1 = C1.Radius();
73 gp_Pnt2d center1(C1.Location());
74 gp_Pnt2d origin2(L2.Location());
75 gp_Dir2d dir2(L2.Direction());
76 gp_Dir2d normL2(-dir2.Y(),dir2.X());
77
78 TColStd_Array1OfReal Radius(1,2);
79 GccAna_CircLin2dBisec Bis1(C1,L2);
80 GccAna_LinPnt2dBisec Bis2(L2,Point3);
81 if (Bis1.IsDone() && Bis2.IsDone()) {
82 Standard_Integer nbsolution1 = Bis1.NbSolutions();
83 for (Standard_Integer i = 1 ; i <= nbsolution1; i++) {
84 Handle(GccInt_Bisec) Sol1 = Bis1.ThisSolution(i);
85 Handle(GccInt_Bisec) Sol2 = Bis2.ThisSolution();
86 GccInt_IType typ1 = Sol1->ArcType();
87 GccInt_IType typ2 = Sol2->ArcType();
88 IntAna2d_AnaIntersection Intp;
89 if (typ1 == GccInt_Lin) {
90 if (typ2 == GccInt_Lin) {
91 Intp.Perform(Sol1->Line(),Sol2->Line());
92 }
93 else if (typ2 == GccInt_Par) {
94 Intp.Perform(Sol1->Line(),IntAna2d_Conic(Sol2->Parabola()));
95 }
96 }
97 else if (typ1 == GccInt_Par) {
98 if (typ2 == GccInt_Lin) {
99 Intp.Perform(Sol2->Line(),IntAna2d_Conic(Sol1->Parabola()));
100 }
101 else if (typ2 == GccInt_Par) {
102 Intp.Perform(Sol1->Parabola(),IntAna2d_Conic(Sol2->Parabola()));
103 }
104 }
105 if (Intp.IsDone()) {
106 if (!Intp.IsEmpty()) {
107 for (Standard_Integer j = 1 ; j <= Intp.NbPoints() ; j++) {
108 gp_Pnt2d Center(Intp.Point(j).Value());
109 Standard_Real dist1 = Center.Distance(C1.Location());
110 Standard_Real dist2 = L2.Distance(Center);
111 Standard_Real dist3 = Center.Distance(Point3);
112 Standard_Integer nbsol1 = 0;
113 Standard_Integer nbsol2 = 0;
114 Standard_Integer nbsol3 = 0;
115 Standard_Boolean ok = Standard_False;
116 if (Qualified1.IsEnclosed()) {
117 if (dist1-R1 < Tolerance) {
118 Radius(1) = Abs(R1-dist1);
119 nbsol1 = 1;
120 ok = Standard_True;
121 }
122 }
123 else if (Qualified1.IsOutside()) {
124 if (R1-dist1 < Tolerance) {
125 Radius(1) = Abs(R1-dist1);
126 nbsol1 = 1;
127 ok = Standard_True;
128 }
129 }
130 else if (Qualified1.IsEnclosing()) {
131 ok = Standard_True;
132 nbsol1 = 1;
133 Radius(1) = Abs(R1-dist1);
134 }
135 else if (Qualified1.IsUnqualified()) {
136 ok = Standard_True;
137 nbsol1 = 2;
138 Radius(1) = Abs(R1-dist1);
139 Radius(2) = R1+dist1;
140 }
141 if (Qualified2.IsEnclosed() && ok) {
142 if ((((L2.Location().X()-Center.X())*(-L2.Direction().Y()))+
143 ((L2.Location().Y()-Center.Y())*(L2.Direction().X())))<=0){
144 for (Standard_Integer ii = 1 ; ii <= nbsol1 ; ii++) {
145 if (Abs(dist2-Radius(ii)) < Tol) {
146 ok = Standard_True;
147 nbsol2 = 1;
148 Radius(1) = Radius(ii);
149 }
150 }
151 }
152 }
153 else if (Qualified2.IsOutside() && ok) {
154 if ((((L2.Location().X()-Center.X())*(-L2.Direction().Y()))+
155 ((L2.Location().Y()-Center.Y())*(L2.Direction().X())))>=0){
156 for (Standard_Integer ii = 1 ; ii <= nbsol1 ; ii++) {
157 if (Abs(dist2-Radius(ii)) < Tol) {
158 ok = Standard_True;
159 nbsol2 = 1;
160 Radius(1) = Radius(ii);
161 }
162 }
163 }
164 }
165 else if (Qualified2.IsUnqualified() && ok) {
166 for (Standard_Integer ii = 1 ; ii <= nbsol1 ; ii++) {
167 if (Abs(dist2-Radius(ii)) < Tol) {
168 ok = Standard_True;
169 nbsol2 = 1;
170 Radius(1) = Radius(ii);
171 }
172 }
173 }
174 if (Abs(dist3-Radius(1)) <= Tol && ok) {
175 ok = Standard_True;
176 nbsol3 = 1;
177 }
178 if (ok) {
179 for (Standard_Integer k = 1 ; k <= nbsol3 ; k++) {
180 if (NbrSol==4)
181 break;
0d969553 182// pop : if the radius is too great - no creation
7fd59977 183 if (Radius(k) > MaxRad) break;
184 if (Abs(Radius(k)) < MinRad) break;
185
186 NbrSol++;
187 cirsol(NbrSol) = gp_Circ2d(gp_Ax2d(Center,dirx),Radius(k));
188// ==========================================================
189 Standard_Real distcc1 = Center.Distance(center1);
190 if (!Qualified1.IsUnqualified()) {
191 qualifier1(NbrSol) = Qualified1.Qualifier();
192 }
193 else if (Abs(distcc1+Radius(k)-R1) < Tol) {
194 qualifier1(NbrSol) = GccEnt_enclosed;
195 }
196 else if (Abs(distcc1-R1-Radius(k)) < Tol) {
197 qualifier1(NbrSol) = GccEnt_outside;
198 }
199 else { qualifier1(NbrSol) = GccEnt_enclosing; }
200 gp_Dir2d dc2(origin2.XY()-Center.XY());
201 if (!Qualified2.IsUnqualified()) {
202 qualifier2(NbrSol) = Qualified2.Qualifier();
203 }
204 else if (dc2.Dot(normL2) > 0.0) {
205 qualifier2(NbrSol) = GccEnt_outside;
206 }
207 else { qualifier2(NbrSol) = GccEnt_enclosed; }
208 qualifier3(NbrSol) = GccEnt_noqualifier;
209 if (Center.Distance(C1.Location()) <= Tolerance &&
210 Abs(Radius(k)-R1) <= Tolerance) {
211 TheSame1(NbrSol) = 1;
212 }
213 else {
214 TheSame1(NbrSol) = 0;
215// modified by NIZHNY-EAP Mon Nov 1 13:48:21 1999 ___BEGIN___
216// gp_Dir2d dc(C1.Location().XY()-Center.XY());
217 gp_Dir2d dc(Center.XY()-C1.Location().XY());
218// modified by NIZHNY-EAP Mon Nov 1 13:48:55 1999 ___END___
219 pnttg1sol(NbrSol)=gp_Pnt2d(Center.XY()+Radius(k)*dc.XY());
220 par1sol(NbrSol)=ElCLib::Parameter(cirsol(NbrSol),
221 pnttg1sol(NbrSol));
222 pararg1(NbrSol)=ElCLib::Parameter(C1,pnttg1sol(NbrSol));
223 }
224 TheSame2(NbrSol) = 0;
225 TheSame3(NbrSol) = 0;
226 gp_Dir2d dc(L2.Location().XY()-Center.XY());
227 Standard_Real sign = dc.Dot(gp_Dir2d(-L2.Direction().Y(),
228 L2.Direction().X()));
229 dc = gp_Dir2d(sign*gp_XY(-L2.Direction().Y(),
230 L2.Direction().X()));
231 pnttg2sol(NbrSol) = gp_Pnt2d(Center.XY()+Radius(k)*dc.XY());
232 par2sol(NbrSol)=ElCLib::Parameter(cirsol(NbrSol),
233 pnttg2sol(NbrSol));
234 pararg2(NbrSol)=ElCLib::Parameter(L2,pnttg2sol(NbrSol));
235 pnttg3sol(NbrSol) = Point3;
236 par3sol(NbrSol)=ElCLib::Parameter(cirsol(NbrSol),
237 pnttg3sol(NbrSol));
238 pararg3(NbrSol) = 0.;
239 }
240 }
241 }
242 }
243 WellDone = Standard_True;
244 }
245 if (NbrSol==4)
246 break;
247 }
248 }
249 }
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