1 // Copyright (C) 2007-2016 CEA/DEN, EDF R&D
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
19 // Author : Anthony Geay (CEA/DEN)
21 #include "InterpKernelGeo2DEdgeArcCircle.hxx"
22 #include "InterpKernelGeo2DEdgeLin.hxx"
23 #include "InterpKernelException.hxx"
24 #include "InterpKernelGeo2DNode.hxx"
25 #include "NormalizedUnstructuredMesh.hxx"
30 using namespace INTERP_KERNEL;
32 ArcCArcCIntersector::ArcCArcCIntersector(const EdgeArcCircle& e1, const EdgeArcCircle& e2):SameTypeEdgeIntersector(e1,e2),_dist(0.)
36 bool ArcCArcCIntersector::haveTheySameDirection() const
38 return (getE1().getAngle()>0. && getE2().getAngle()>0.) || (getE1().getAngle()<0. && getE2().getAngle()<0.);
41 bool ArcCArcCIntersector::areColinears() const
43 double radiusL,radiusB;
44 double centerL[2],centerB[2];
46 return internalAreColinears(getE1(),getE2(),tmp,cst,radiusL,centerL,radiusB,centerB);
50 * Precondition 'start' and 'end' are on the same curve than this.
52 void ArcCArcCIntersector::getPlacements(Node *start, Node *end, TypeOfLocInEdge& whereStart, TypeOfLocInEdge& whereEnd, MergePoints& commonNode) const
54 bool obvious1,obvious2;
55 obviousCaseForCurvAbscisse(start,whereStart,commonNode,obvious1);
56 obviousCaseForCurvAbscisse(end,whereEnd,commonNode,obvious2);
57 if(obvious1 && obvious2)
59 double angleInRadStart=getAngle(start);
60 double angleInRadEnd=getAngle(end);
61 if(obvious1 || obvious2)
65 if(EdgeArcCircle::IsIn2Pi(getE1().getAngle0(),getE1().getAngle(),angleInRadEnd))
73 if(EdgeArcCircle::IsIn2Pi(getE1().getAngle0(),getE1().getAngle(),angleInRadStart))
76 whereStart=OUT_BEFORE;
80 if(EdgeArcCircle::IsIn2Pi(getE1().getAngle0(),getE1().getAngle(),angleInRadStart))
83 if(EdgeArcCircle::IsIn2Pi(getE1().getAngle0(),getE1().getAngle(),angleInRadEnd))
89 {//we are out in start.
90 if(EdgeArcCircle::IsIn2Pi(getE1().getAngle0(),getE1().getAngle(),angleInRadEnd))
92 whereStart=OUT_BEFORE;
97 if(EdgeArcCircle::IsIn2Pi(getE2().getAngle0(),getE2().getAngle(),getE1().getAngle0()))
98 {//_e2 contains stictly _e1
99 whereStart=OUT_BEFORE;
103 {//_e2 is outside from _e1
104 whereStart=OUT_BEFORE;
112 * Return angle between ]-Pi;Pi[
114 double ArcCArcCIntersector::getAngle(Node *node) const
116 return EdgeArcCircle::GetAbsoluteAngleOfNormalizedVect(((*node)[0]-getE1().getCenter()[0])/getE1().getRadius(),((*node)[1]-getE1().getCenter()[1])/getE1().getRadius());
119 bool ArcCArcCIntersector::internalAreColinears(const EdgeArcCircle& a1, const EdgeArcCircle& a2, double& distBetweenCenters, double& cst,
120 double& radiusL, double centerL[2], double& radiusB, double centerB[2])
122 double lgth1=fabs(a1.getAngle()*a1.getRadius());
123 double lgth2=fabs(a2.getAngle()*a2.getRadius());
125 {//a1 is the little one ('L') and a2 the big one ('B')
126 a1.getCenter(centerL); radiusL=a1.getRadius();
127 a2.getCenter(centerB); radiusB=a2.getRadius();
131 a2.getCenter(centerL); radiusL=a2.getRadius();
132 a1.getCenter(centerB); radiusB=a1.getRadius();
134 // dividing from the begining by radiusB^2 to keep precision
135 distBetweenCenters=Node::distanceBtw2PtSq(centerL,centerB);
136 cst=distBetweenCenters/(radiusB*radiusB);
137 cst+=radiusL*radiusL/(radiusB*radiusB);
138 return Node::areDoubleEqualsWP(cst,1.,2.);
141 bool ArcCArcCIntersector::areArcsOverlapped(const EdgeArcCircle& a1, const EdgeArcCircle& a2)
143 double radiusL,radiusB;
144 double centerL[2],centerB[2];
145 double tmp(0.),cst(0.);
146 if(!internalAreColinears(a1,a2,tmp,cst,radiusL,centerL,radiusB,centerB))
149 double angle0L,angleL;
150 Bounds *merge=a1.getBounds().nearlyAmIIntersectingWith(a2.getBounds());
151 merge->getInterceptedArc(centerL,radiusL,angle0L,angleL);
155 if(Node::areDoubleEqualsWP(tmp,0.,1/(10*std::max(radiusL,radiusB))))
156 return Node::areDoubleEquals(radiusL,radiusB);
157 double phi=EdgeArcCircle::GetAbsoluteAngleOfNormalizedVect((centerL[0]-centerB[0])/tmp,(centerL[1]-centerB[1])/tmp);
158 double cst2=2*radiusL*tmp/(radiusB*radiusB);
159 double cmpContainer[4];
160 int sizeOfCmpContainer=2;
161 cmpContainer[0]=cst+cst2*cos(phi-angle0L);
162 cmpContainer[1]=cst+cst2*cos(phi-angle0L+angleL);
163 double a=EdgeArcCircle::NormalizeAngle(phi-angle0L);
164 if(EdgeArcCircle::IsIn2Pi(angle0L,angleL,a))
165 cmpContainer[sizeOfCmpContainer++]=cst+cst2;
166 a=EdgeArcCircle::NormalizeAngle(phi-angle0L+M_PI);
167 if(EdgeArcCircle::IsIn2Pi(angle0L,angleL,a))
168 cmpContainer[sizeOfCmpContainer++]=cst-cst2;
169 a=*std::max_element(cmpContainer,cmpContainer+sizeOfCmpContainer);
170 return Node::areDoubleEqualsWP(a,1.,2.);
173 void ArcCArcCIntersector::areOverlappedOrOnlyColinears(const Bounds *whereToFind, bool& obviousNoIntersection, bool& areOverlapped)
175 _dist=Node::distanceBtw2Pt(getE1().getCenter(),getE2().getCenter());
176 double radius1=getE1().getRadius(); double radius2=getE2().getRadius();
177 if(_dist>radius1+radius2+QuadraticPlanarPrecision::getPrecision() || _dist+std::min(radius1,radius2)+QuadraticPlanarPrecision::getPrecision()<std::max(radius1,radius2))
179 obviousNoIntersection=true;
183 if(areArcsOverlapped(getE1(),getE2()))//(Node::areDoubleEquals(_dist,0.) && Node::areDoubleEquals(radius1,radius2))
185 obviousNoIntersection=false;
190 obviousNoIntersection=false;
195 std::list< IntersectElement > ArcCArcCIntersector::getIntersectionsCharacteristicVal() const
197 std::list< IntersectElement > ret;
198 const double *center1=getE1().getCenter();
199 const double *center2=getE2().getCenter();
200 double radius1=getE1().getRadius(); double radius2=getE2().getRadius();
201 double d1_1=(_dist*_dist-radius2*radius2+radius1*radius1)/(2.*_dist);
202 double u[2];//u is normalized vector from center1 to center2.
203 u[0]=(center2[0]-center1[0])/_dist; u[1]=(center2[1]-center1[1])/_dist;
204 double d1_1y=EdgeArcCircle::SafeSqrt(radius1*radius1-d1_1*d1_1);
205 double angleE1=EdgeArcCircle::NormalizeAngle(getE1().getAngle0()+getE1().getAngle());
206 double angleE2=EdgeArcCircle::NormalizeAngle(getE2().getAngle0()+getE2().getAngle());
207 if(!Node::areDoubleEquals(d1_1y,0))
211 v1[0]=u[0]*d1_1-u[1]*d1_1y; v1[1]=u[1]*d1_1+u[0]*d1_1y;
212 v2[0]=u[0]*d1_1+u[1]*d1_1y; v2[1]=u[1]*d1_1-u[0]*d1_1y;
213 Node *node1=new Node(center1[0]+v1[0],center1[1]+v1[1]); node1->declareOn();
214 Node *node2=new Node(center1[0]+v2[0],center1[1]+v2[1]); node2->declareOn();
215 double angle1_1=EdgeArcCircle::GetAbsoluteAngleOfNormalizedVect(v1[0]/radius1,v1[1]/radius1);
216 double angle2_1=EdgeArcCircle::GetAbsoluteAngleOfNormalizedVect(v2[0]/radius1,v2[1]/radius1);
218 v3[0]=center1[0]-center2[0]+v1[0]; v3[1]=center1[1]-center2[1]+v1[1];
219 v4[0]=center1[0]-center2[0]+v2[0]; v4[1]=center1[1]-center2[1]+v2[1];
220 double angle1_2=EdgeArcCircle::GetAbsoluteAngleOfNormalizedVect(v3[0]/radius2,v3[1]/radius2);
221 double angle2_2=EdgeArcCircle::GetAbsoluteAngleOfNormalizedVect(v4[0]/radius2,v4[1]/radius2);
223 bool e1_1S=Node::areDoubleEqualsWP(angle1_1,getE1().getAngle0(),radius1);
224 bool e1_1E=Node::areDoubleEqualsWP(angle1_1,angleE1,radius1);
225 bool e1_2S=Node::areDoubleEqualsWP(angle1_2,getE2().getAngle0(),radius1);
226 bool e1_2E=Node::areDoubleEqualsWP(angle1_2,angleE2,radius1);
228 bool e2_1S=Node::areDoubleEqualsWP(angle2_1,getE1().getAngle0(),radius2);
229 bool e2_1E=Node::areDoubleEqualsWP(angle2_1,angleE1,radius2);
230 bool e2_2S=Node::areDoubleEqualsWP(angle2_2,getE2().getAngle0(),radius2);
231 bool e2_2E=Node::areDoubleEqualsWP(angle2_2,angleE2,radius2);
232 ret.push_back(IntersectElement(angle1_1,angle1_2,e1_1S,e1_1E,e1_2S,e1_2E,node1,_e1,_e2,keepOrder()));
233 ret.push_back(IntersectElement(angle2_1,angle2_2,e2_1S,e2_1E,e2_2S,e2_2E,node2,_e1,_e2,keepOrder()));
237 //tangent intersection
239 v1[0]=d1_1*u[0]; v1[1]=d1_1*u[1];
240 v2[0]=center1[0]-center2[0]+v1[0]; v2[1]=center1[1]-center2[1]+v1[1];
241 double angle0_1=EdgeArcCircle::GetAbsoluteAngleOfNormalizedVect(v1[0]/radius1,v1[1]/radius1);
242 double angle0_2=EdgeArcCircle::GetAbsoluteAngleOfNormalizedVect(v2[0]/radius2,v2[1]/radius2);
243 bool e0_1S=Node::areDoubleEqualsWP(angle0_1,getE1().getAngle0(),radius1);
244 bool e0_1E=Node::areDoubleEqualsWP(angle0_1,angleE1,radius1);
245 bool e0_2S=Node::areDoubleEqualsWP(angle0_2,getE2().getAngle0(),radius2);
246 bool e0_2E=Node::areDoubleEqualsWP(angle0_2,angleE2,radius2);
247 Node *node=new Node(center1[0]+d1_1*u[0],center1[1]+d1_1*u[1]); node->declareOnTangent();
248 ret.push_back(IntersectElement(angle0_1,angle0_2,e0_1S,e0_1E,e0_2S,e0_2E,node,_e1,_e2,keepOrder()));
253 double signDeltaAngle2;
261 angle0_2=angle0_1+M_PI;
276 angle0_1=NormalizeAngle(angle0_1);
277 angle0_2=NormalizeAngle(angle0_2);
278 double angleE1=NormalizeAngle(getE1().getAngle0()+getE1().getAngle());
279 double angleE2=NormalizeAngle(getE2().getAngle0()+getE2().getAngle());
280 if(!(Node::areDoubleEquals(d1_1,radius1) || Node::areDoubleEquals(d1_1,-radius1)) )
283 double deltaAngle1=EdgeArcCircle::SafeAcos(fabs(d1_1)/radius1); //owns to 0;Pi/2 by construction
284 double deltaAngle2=EdgeArcCircle::SafeAcos(fabs(d1_2)/radius2); //owns to 0;Pi/2 by construction
285 double angle1_1=NormalizeAngle(angle0_1+deltaAngle1);// Intersection 1 seen for _e1
286 double angle2_1=NormalizeAngle(angle0_1-deltaAngle1);// Intersection 2 seen for _e1
287 double angle1_2=NormalizeAngle(angle0_2+signDeltaAngle2*deltaAngle2);// Intersection 1 seen for _e2
288 double angle2_2=NormalizeAngle(angle0_2-signDeltaAngle2*deltaAngle2);// Intersection 2 seen for _e2
290 bool e1_1S=Node::areDoubleEqualsWP(angle1_1,getE1().getAngle0(),radius1);
291 bool e1_1E=Node::areDoubleEqualsWP(angle1_1,angleE1,radius1);
292 bool e1_2S=Node::areDoubleEqualsWP(angle1_2,getE2().getAngle0(),radius1);
293 bool e1_2E=Node::areDoubleEqualsWP(angle1_2,angleE2,radius1);
295 bool e2_1S=Node::areDoubleEqualsWP(angle2_1,getE1().getAngle0(),radius2);
296 bool e2_1E=Node::areDoubleEqualsWP(angle2_1,angleE1,radius2);
297 bool e2_2S=Node::areDoubleEqualsWP(angle2_2,getE2().getAngle0(),radius2);
298 bool e2_2E=Node::areDoubleEqualsWP(angle2_2,angleE2,radius2);
299 Node *node1=new Node(center1[0]+radius1*cos(angle1_1),center1[0]+radius1*sin(angle1_1)); node1->declareOn();
300 Node *node2=new Node(center1[0]+radius1*cos(angle2_1),center1[0]+radius1*sin(angle2_1)); node2->declareOn();
301 ret.push_back(IntersectElement(angle1_1,angle1_2,e1_1S,e1_1E,e1_2S,e1_2E,node1,_e1,_e2,keepOrder()));
302 ret.push_back(IntersectElement(angle2_1,angle2_2,e2_1S,e2_1E,e2_2S,e2_2E,node2,_e1,_e2,keepOrder()));
305 //tangent intersection
307 bool e0_1S=Node::areDoubleEqualsWP(angle0_1,getE1().getAngle0(),radius1);
308 bool e0_1E=Node::areDoubleEqualsWP(angle0_1,angleE1,radius1);
309 bool e0_2S=Node::areDoubleEqualsWP(angle0_2,getE2().getAngle0(),radius2);
310 bool e0_2E=Node::areDoubleEqualsWP(angle0_2,angleE2,radius2);
311 Node *node=new Node(center1[0]+radius1*cos(angle0_1),center1[0]+radius1*sin(angle0_1)); node->declareOnTangent();
312 ret.push_back(IntersectElement(angle0_1,angle0_2,e0_1S,e0_1E,e0_2S,e0_2E,node,_e1,_e2,keepOrder()));
316 ArcCSegIntersector::ArcCSegIntersector(const EdgeArcCircle& e1, const EdgeLin& e2, bool reverse):CrossTypeEdgeIntersector(e1,e2,reverse)
320 void ArcCSegIntersector::areOverlappedOrOnlyColinears(const Bounds *whereToFind, bool& obviousNoIntersection, bool& areOverlapped)
322 areOverlapped=false;//No overlapping by construction
323 const double *center=getE1().getCenter();
324 _dx=(*(_e2.getEndNode()))[0]-(*(_e2.getStartNode()))[0];
325 _dy=(*(_e2.getEndNode()))[1]-(*(_e2.getStartNode()))[1];
326 _drSq=_dx*_dx+_dy*_dy;
328 ((*(_e2.getStartNode()))[0]-center[0])*((*(_e2.getEndNode()))[1]-center[1])-
329 ((*(_e2.getStartNode()))[1]-center[1])*((*(_e2.getEndNode()))[0]-center[0]);
330 _determinant=getE1().getRadius()*getE1().getRadius()/_drSq-_cross*_cross/(_drSq*_drSq);
331 if(_determinant>-2*QuadraticPlanarPrecision::getPrecision())//QuadraticPlanarPrecision::getPrecision()*QuadraticPlanarPrecision::getPrecision()*_drSq*_drSq/(2.*_dx*_dx))
332 obviousNoIntersection=false;
334 obviousNoIntersection=true;
338 * By construction, no chance that an arc of circle and line to be colinear.
340 bool ArcCSegIntersector::areColinears() const
345 void ArcCSegIntersector::getPlacements(Node *start, Node *end, TypeOfLocInEdge& whereStart, TypeOfLocInEdge& whereEnd, MergePoints& commonNode) const
347 throw Exception("Internal error. Should never been called : no overlapping possible between arc of circle and a segment.");
350 std::list< IntersectElement > ArcCSegIntersector::getIntersectionsCharacteristicVal() const
352 std::list< IntersectElement > ret;
353 const double *center=getE1().getCenter();
354 if(!(fabs(_determinant)<(2.*QuadraticPlanarPrecision::getPrecision())))//QuadraticPlanarPrecision::getPrecision()*QuadraticPlanarPrecision::getPrecision()*_drSq*_drSq/(2.*_dx*_dx))
356 double determinant=EdgeArcCircle::SafeSqrt(_determinant);
357 double x1=(_cross*_dy/_drSq+Node::sign(_dy)*_dx*determinant)+center[0];
358 double y1=(-_cross*_dx/_drSq+fabs(_dy)*determinant)+center[1];
359 Node *intersect1=new Node(x1,y1); intersect1->declareOn();
360 bool i1_1S=_e1.getStartNode()->isEqual(*intersect1);
361 bool i1_1E=_e1.getEndNode()->isEqual(*intersect1);
362 bool i1_2S=_e2.getStartNode()->isEqual(*intersect1);
363 bool i1_2E=_e2.getEndNode()->isEqual(*intersect1);
364 ret.push_back(IntersectElement(getE1().getCharactValue(*intersect1),getE2().getCharactValue(*intersect1),i1_1S,i1_1E,i1_2S,i1_2E,intersect1,_e1,_e2,keepOrder()));
366 double x2=(_cross*_dy/_drSq-Node::sign(_dy)*_dx*determinant)+center[0];
367 double y2=(-_cross*_dx/_drSq-fabs(_dy)*determinant)+center[1];
368 Node *intersect2=new Node(x2,y2); intersect2->declareOn();
369 bool i2_1S=_e1.getStartNode()->isEqual(*intersect2);
370 bool i2_1E=_e1.getEndNode()->isEqual(*intersect2);
371 bool i2_2S=_e2.getStartNode()->isEqual(*intersect2);
372 bool i2_2E=_e2.getEndNode()->isEqual(*intersect2);
373 ret.push_back(IntersectElement(getE1().getCharactValue(*intersect2),getE2().getCharactValue(*intersect2),i2_1S,i2_1E,i2_2S,i2_2E,intersect2,_e1,_e2,keepOrder()));
375 else//tangent intersection
377 double x=(_cross*_dy)/_drSq+center[0];
378 double y=(-_cross*_dx)/_drSq+center[1];
379 Node *intersect3=new Node(x,y); intersect3->declareOnTangent();
380 bool i_1S=_e1.getStartNode()->isEqual(*intersect3);
381 bool i_1E=_e1.getEndNode()->isEqual(*intersect3);
382 bool i_2S=_e2.getStartNode()->isEqual(*intersect3);
383 bool i_2E=_e2.getEndNode()->isEqual(*intersect3);
384 ret.push_back(IntersectElement(_e1.getCharactValue(*intersect3),_e2.getCharactValue(*intersect3),i_1S,i_1E,i_2S,i_2E,intersect3,_e1,_e2,keepOrder()));
389 EdgeArcCircle::EdgeArcCircle(std::istream& lineInXfig)
391 const unsigned NB_OF_SKIP_FIELDS=15;
393 for(unsigned i=0;i<NB_OF_SKIP_FIELDS;i++)
395 _start=new Node(lineInXfig);
396 Node *middle=new Node(lineInXfig);
397 _end=new Node(lineInXfig);
398 GetArcOfCirclePassingThru(*_start,*middle,*_end,_center,_radius,_angle,_angle0);
403 EdgeArcCircle::EdgeArcCircle(Node *start, Node *middle, Node *end, bool direction):Edge(start,end, direction)
405 GetArcOfCirclePassingThru(*_start,*middle,*_end,_center,_radius,_angle,_angle0);
409 EdgeArcCircle::EdgeArcCircle(double sX, double sY, double mX, double mY, double eX, double eY):Edge(sX,sY,eX,eY)
411 double middle[2]; middle[0]=mX; middle[1]=mY;
412 GetArcOfCirclePassingThru(*_start,middle,*_end,_center,_radius,_angle,_angle0);
417 * @param angle0 in ]-Pi;Pi[
418 * @param deltaAngle in ]-2.*Pi;2.*Pi[
420 EdgeArcCircle::EdgeArcCircle(Node *start, Node *end, const double *center, double radius, double angle0, double deltaAngle, bool direction):Edge(start,end,direction),_angle(deltaAngle),
421 _angle0(angle0),_radius(radius)
423 _center[0]=center[0];
424 _center[1]=center[1];
428 void EdgeArcCircle::changeMiddle(Node *newMiddle)
430 GetArcOfCirclePassingThru(*_start,*newMiddle,*_end,_center,_radius,_angle,_angle0);
434 Edge *EdgeArcCircle::buildEdgeLyingOnMe(Node *start, Node *end, bool direction) const
436 double sx=((*start)[0]-_center[0])/_radius;
437 double sy=((*start)[1]-_center[1])/_radius;
438 double ex=((*end)[0]-_center[0])/_radius;
439 double ey=((*end)[1]-_center[1])/_radius;
440 double angle0=GetAbsoluteAngleOfNormalizedVect(direction?sx:ex,direction?sy:ey);
441 double deltaAngle=GetAbsoluteAngleOfNormalizedVect(sx*ex+sy*ey,sx*ey-sy*ex);
442 if(deltaAngle>0. && _angle<0.)
444 else if(deltaAngle<0. && _angle>0.)
446 deltaAngle=direction?deltaAngle:-deltaAngle;
447 return new EdgeArcCircle(start,end,_center,_radius,angle0,deltaAngle,direction);
450 void EdgeArcCircle::applySimilarity(double xBary, double yBary, double dimChar)
452 Edge::applySimilarity(xBary,yBary,dimChar);
454 _center[0]=(_center[0]-xBary)/dimChar;
455 _center[1]=(_center[1]-yBary)/dimChar;
458 void EdgeArcCircle::unApplySimilarity(double xBary, double yBary, double dimChar)
460 Edge::unApplySimilarity(xBary,yBary,dimChar);
462 _center[0]=_center[0]*dimChar+xBary;
463 _center[1]=_center[1]*dimChar+yBary;
467 * 'eps' is expected to be > 0.
468 * 'conn' is of size 3. conn[0] is start id, conn[1] is end id and conn[2] is middle id.
469 * 'offset' is typically the number of nodes already existing in global 2D curve mesh. Additionnal coords 'addCoo' ids will be put after the already existing.
471 void EdgeArcCircle::tesselate(const int *conn, int offset, double eps, std::vector<int>& newConn, std::vector<double>& addCoo) const
473 newConn.push_back(INTERP_KERNEL::NORM_POLYL);
474 int nbOfSubDiv=(int)(fabs(_angle)/eps);
477 newConn.push_back(conn[0]); newConn.push_back(conn[2]); newConn.push_back(conn[1]);
480 double signOfAngle=_angle>0.?1.:-1.;
481 int offset2=offset+((int)addCoo.size())/2;
482 newConn.push_back(conn[0]);
483 for(int i=1;i<nbOfSubDiv;i++,offset2++)
485 double angle=_angle0+i*eps*signOfAngle;
486 newConn.push_back(offset2);
487 addCoo.push_back(_center[0]+_radius*cos(angle)); addCoo.push_back(_center[1]+_radius*sin(angle));
489 newConn.push_back(conn[1]);
492 EdgeArcCircle *EdgeArcCircle::BuildFromNodes(Node *start, Node *middle, Node *end)
495 e1=new EdgeLin(start,middle);
496 e2=new EdgeLin(middle,end);
497 SegSegIntersector inters(*e1,*e2);
498 bool colinearity=inters.areColinears();
499 delete e1; delete e2;
502 start->decrRef(); middle->decrRef(); end->decrRef();
507 EdgeArcCircle *ret=new EdgeArcCircle(start,middle,end);
508 start->decrRef(); middle->decrRef(); end->decrRef();
514 * Given an \b NON normalized vector 'vect', returns its norm 'normVect' and its
515 * angle in ]-Pi,Pi] relative to Ox axe.
517 double EdgeArcCircle::GetAbsoluteAngle(const double *vect, double& normVect)
519 normVect=Node::norm(vect);
520 return GetAbsoluteAngleOfNormalizedVect(vect[0]/normVect,vect[1]/normVect);
524 * Given a \b normalized vector defined by (ux,uy) returns its angle in ]-Pi;Pi].
525 * So before using this method ux*ux+uy*uy should as much as possible close to 1.
526 * This methods is quite time consuming in order to keep as much as possible precision.
527 * It is NOT ALWAYS possible to do that only in one call of acos. Sometimes call to asin is necessary
528 * due to imperfection of acos near 0. and Pi (cos x ~ 1-x*x/2.)
530 double EdgeArcCircle::GetAbsoluteAngleOfNormalizedVect(double ux, double uy)
532 return atan2(uy, ux);
535 void EdgeArcCircle::GetArcOfCirclePassingThru(const double *start, const double *middle, const double *end,
536 double *center, double& radius, double& angleInRad, double& angleInRad0)
538 double delta=(middle[0]-start[0])*(end[1]-middle[1])-(end[0]-middle[0])*(middle[1]-start[1]);
539 double b1=(middle[1]*middle[1]+middle[0]*middle[0]-start[0]*start[0]-start[1]*start[1])/2;
540 double b2=(end[1]*end[1]+end[0]*end[0]-middle[0]*middle[0]-middle[1]*middle[1])/2;
541 center[0]=((end[1]-middle[1])*b1+(start[1]-middle[1])*b2)/delta;
542 center[1]=((middle[0]-end[0])*b1+(middle[0]-start[0])*b2)/delta;
543 radius=SafeSqrt((start[0]-center[0])*(start[0]-center[0])+(start[1]-center[1])*(start[1]-center[1]));
544 angleInRad0=GetAbsoluteAngleOfNormalizedVect((start[0]-center[0])/radius,(start[1]-center[1])/radius);
545 double angleInRadM=GetAbsoluteAngleOfNormalizedVect((middle[0]-center[0])/radius,(middle[1]-center[1])/radius);
546 angleInRad=GetAbsoluteAngleOfNormalizedVect(((start[0]-center[0])*(end[0]-center[0])+(start[1]-center[1])*(end[1]-center[1]))/(radius*radius),
547 ((start[0]-center[0])*(end[1]-center[1])-(start[1]-center[1])*(end[0]-center[0]))/(radius*radius));
548 if(IsAngleNotIn(angleInRad0,angleInRad,angleInRadM))
549 angleInRad=angleInRad<0?2*M_PI+angleInRad:angleInRad-2*M_PI;
552 void EdgeArcCircle::dumpInXfigFile(std::ostream& stream, bool direction, int resolution, const Bounds& box) const
554 stream << "5 1 0 1 ";
555 fillXfigStreamForLoc(stream);
556 stream << " 7 50 -1 -1 0.000 0 ";
557 if( (direction && (-_angle)>=0) || (!direction && (-_angle)<0))
562 stream << box.fitXForXFigD(_center[0],resolution) << " " << box.fitYForXFigD(_center[1],resolution) << " ";
563 direction?_start->dumpInXfigFile(stream,resolution,box):_end->dumpInXfigFile(stream,resolution,box);
564 Node *middle=buildRepresentantOfMySelf();
565 middle->dumpInXfigFile(stream,resolution,box);
567 direction?_end->dumpInXfigFile(stream,resolution,box):_start->dumpInXfigFile(stream,resolution,box);
568 stream << std::endl << "1 1 2.00 120.00 180.00" << std::endl;
571 void EdgeArcCircle::update(Node *m)
573 GetArcOfCirclePassingThru(*_start,*m,*_end,_center,_radius,_angle,_angle0);
578 * This methods computes :
580 * \int_{Current Edge} -ydx
583 double EdgeArcCircle::getAreaOfZone() const
585 return -_radius*_radius*(sin(_angle)-_angle)/2.+((*_start)[0]-(*_end)[0])*((*_start)[1]+(*_end)[1])/2.;
588 double EdgeArcCircle::getCurveLength() const
590 return fabs(_angle*_radius);
593 void EdgeArcCircle::getBarycenter(double *bary) const
595 bary[0]=_center[0]+_radius*cos(_angle0+_angle/2.);
596 bary[1]=_center[1]+_radius*sin(_angle0+_angle/2.);
601 * bary[0]=\int_{Current Edge} -yxdx
604 * bary[1]=\int_{Current Edge} -\frac{y^{2}}{2}dx
606 * To compute these 2 expressions in this class we have :
608 * x=x_{0}+Radius \cdot cos(\theta)
611 * y=y_{0}+Radius \cdot sin(\theta)
614 * dx=-Radius \cdot sin(\theta) \cdot d\theta
617 void EdgeArcCircle::getBarycenterOfZone(double *bary) const
619 double x0=_center[0];
620 double y0=_center[1];
621 double angle1=_angle0+_angle;
622 double tmp1=sin(angle1);
623 double tmp0=sin(_angle0);
624 double tmp2=_radius*_radius*_radius;
625 double tmp3=cos(angle1);
626 double tmp4=cos(_angle0);
627 bary[0]=_radius*x0*y0*(tmp4-tmp3)+_radius*_radius*(y0*(cos(2*_angle0)-cos(2*angle1))/4.+
628 x0*(_angle/2.+(sin(2.*_angle0)-sin(2.*angle1))/4.))
629 +tmp2*(tmp1*tmp1*tmp1-tmp0*tmp0*tmp0)/3.;
630 bary[1]=y0*y0*_radius*(tmp4-tmp3)/2.+_radius*_radius*y0*(_angle/2.+(sin(2.*_angle0)-sin(2.*angle1))/4.)
631 +tmp2*(tmp4-tmp3+(tmp3*tmp3*tmp3-tmp4*tmp4*tmp4)/3.)/2.;
635 * Compute the "middle" of two points on the arc of circle.
636 * The order (p1,p2) or (p2,p1) doesn't matter. p1 and p2 have to be localized on the edge defined by this.
637 * \param[out] mid the point located half-way between p1 and p2 on the arc defined by this.
638 * \sa getMiddleOfPointsOriented() a generalisation working also when p1 and p2 are not on the arc.
640 void EdgeArcCircle::getMiddleOfPoints(const double *p1, const double *p2, double *mid) const
642 double dx1((p1[0]-_center[0])/_radius),dy1((p1[1]-_center[1])/_radius),dx2((p2[0]-_center[0])/_radius),dy2((p2[1]-_center[1])/_radius);
643 double angle1(GetAbsoluteAngleOfNormalizedVect(dx1,dy1)),angle2(GetAbsoluteAngleOfNormalizedVect(dx2,dy2));
645 double myDelta1(angle1-_angle0),myDelta2(angle2-_angle0);
647 { myDelta1=myDelta1>-QuadraticPlanarPrecision::getPrecision()?myDelta1:myDelta1+2.*M_PI; myDelta2=myDelta2>-QuadraticPlanarPrecision::getPrecision()?myDelta2:myDelta2+2.*M_PI; }
649 { myDelta1=myDelta1<QuadraticPlanarPrecision::getPrecision()?myDelta1:myDelta1-2.*M_PI; myDelta2=myDelta2<QuadraticPlanarPrecision::getPrecision()?myDelta2:myDelta2-2.*M_PI; }
651 mid[0]=_center[0]+_radius*cos(_angle0+(myDelta1+myDelta2)/2.);
652 mid[1]=_center[1]+_radius*sin(_angle0+(myDelta1+myDelta2)/2.);
656 * Compute the "middle" of two points on the arc of circle.
657 * Walk on the circle from p1 to p2 using the rotation direction indicated by this->_angle (i.e. by the orientation of the arc).
658 * This function is sensitive to the ordering of p1 and p2.
659 * \param[out] mid the point located half-way between p1 and p2
660 * \sa getMiddleOfPoints() to be used when the order of p1 and p2 is not relevant.
662 void EdgeArcCircle::getMiddleOfPointsOriented(const double *p1, const double *p2, double *mid) const
664 double dx1((p1[0]-_center[0])/_radius),dy1((p1[1]-_center[1])/_radius),dx2((p2[0]-_center[0])/_radius),dy2((p2[1]-_center[1])/_radius);
665 double angle1(GetAbsoluteAngleOfNormalizedVect(dx1,dy1)),angle2(GetAbsoluteAngleOfNormalizedVect(dx2,dy2));
673 if((_angle>0. && angle1 <= angle2) || (_angle<=0. && angle1 >= angle2))
674 avg = (angle1+angle2)/2.;
676 avg = (angle1+angle2)/2. - M_PI;
678 mid[0]=_center[0]+_radius*cos(avg);
679 mid[1]=_center[1]+_radius*sin(avg);
684 * Characteristic value used is angle in ]_Pi;Pi[ from axe 0x.
686 bool EdgeArcCircle::isIn(double characterVal) const
688 return IsIn2Pi(_angle0,_angle,characterVal);
691 Node *EdgeArcCircle::buildRepresentantOfMySelf() const
693 return new Node(_center[0]+_radius*cos(_angle0+_angle/2.),_center[1]+_radius*sin(_angle0+_angle/2.));
697 * Characteristic value used is angle in ]_Pi;Pi[ from axe 0x.
698 * 'val1' and 'val2' have been detected previously as owning to this.
700 bool EdgeArcCircle::isLower(double val1, double val2) const
702 double myDelta1=val1-_angle0;
703 double myDelta2=val2-_angle0;
706 myDelta1=myDelta1>-(_radius*QuadraticPlanarPrecision::getPrecision())?myDelta1:myDelta1+2.*M_PI;//in some cases val1 or val2 are so close to angle0 that myDelta is close to 0. but negative.
707 myDelta2=myDelta2>-(_radius*QuadraticPlanarPrecision::getPrecision())?myDelta2:myDelta2+2.*M_PI;
708 return myDelta1<myDelta2;
712 myDelta1=myDelta1<(_radius*QuadraticPlanarPrecision::getPrecision())?myDelta1:myDelta1-2.*M_PI;
713 myDelta2=myDelta2<(_radius*QuadraticPlanarPrecision::getPrecision())?myDelta2:myDelta2-2.*M_PI;
714 return myDelta2<myDelta1;
719 * For Arc circle the caract value is angle with Ox between -Pi and Pi.
721 double EdgeArcCircle::getCharactValue(const Node& node) const
723 double dx=(node[0]-_center[0])/_radius;
724 double dy=(node[1]-_center[1])/_radius;
725 return GetAbsoluteAngleOfNormalizedVect(dx,dy);
728 double EdgeArcCircle::getCharactValueBtw0And1(const Node& node) const
730 double dx=(node[0]-_center[0])/_radius;
731 double dy=(node[1]-_center[1])/_radius;
732 double angle=GetAbsoluteAngleOfNormalizedVect(dx,dy);
734 double myDelta=angle-_angle0;
736 myDelta=myDelta>=0.?myDelta:myDelta+2.*M_PI;
738 myDelta=myDelta<=0.?myDelta:myDelta-2.*M_PI;
739 return myDelta/_angle;
742 double EdgeArcCircle::getDistanceToPoint(const double *pt) const
744 double angle=Node::computeAngle(_center,pt);
745 if(IsIn2Pi(_angle0,_angle,angle))
746 return fabs(Node::distanceBtw2Pt(_center,pt)-_radius);
749 double dist1=Node::distanceBtw2Pt(*_start,pt);
750 double dist2=Node::distanceBtw2Pt(*_end,pt);
751 return std::min(dist1,dist2);
755 bool EdgeArcCircle::isNodeLyingOn(const double *coordOfNode) const
757 double dist=Node::distanceBtw2Pt(_center,coordOfNode);
758 if(Node::areDoubleEquals(dist,_radius))
760 double angle=Node::computeAngle(_center,coordOfNode);
761 return IsIn2Pi(_angle0,_angle,angle);
768 * Idem IsAngleNotIn except that here 'start' in ]-Pi;Pi[ and delta in ]-2*Pi;2Pi[.
769 * @param angleIn in ]-Pi;Pi[.
771 bool EdgeArcCircle::IsIn2Pi(double start, double delta, double angleIn)
773 double myDelta=angleIn-start;
776 myDelta=myDelta>=0.?myDelta:myDelta+2.*M_PI;
777 return myDelta>0. && myDelta<delta;
781 myDelta=myDelta<=0.?myDelta:myDelta-2.*M_PI;
782 return myDelta<0. && myDelta>delta;
787 * Given the arc 'a' defined by 'start' angle and a 'delta' [-Pi;Pi] states for the angle 'angleIn' [-Pi;Pi] if it owns or not 'a'.
789 bool EdgeArcCircle::IsAngleNotIn(double start, double delta, double angleIn)
797 if(tmp+delta>=2.*M_PI)
798 return (tmp2<tmp) && (tmp2>tmp+delta-2*M_PI);
799 else if(tmp+delta>=0.)
800 return (tmp2<std::min(tmp,tmp+delta) || tmp2>std::max(tmp,tmp+delta));
802 return (tmp2>tmp) && (tmp2<(tmp+delta+2.*M_PI));
805 void EdgeArcCircle::updateBounds()
807 _bounds.setValues(std::min((*_start)[0],(*_end)[0]),std::max((*_start)[0],(*_end)[0]),std::min((*_start)[1],(*_end)[1]),std::max((*_start)[1],(*_end)[1]));
808 if(IsIn2Pi(_angle0,_angle,M_PI/2))
809 _bounds[3]=_center[1]+_radius;
810 if(IsIn2Pi(_angle0,_angle,-M_PI/2))
811 _bounds[2]=_center[1]-_radius;
812 if(IsIn2Pi(_angle0,_angle,0.))
813 _bounds[1]=_center[0]+_radius;
814 if(IsIn2Pi(_angle0,_angle,M_PI))
815 _bounds[0]=_center[0]-_radius;
818 void EdgeArcCircle::fillGlobalInfoAbs(bool direction, const std::map<INTERP_KERNEL::Node *,int>& mapThis, const std::map<INTERP_KERNEL::Node *,int>& mapOther, int offset1, int offset2, double fact, double baryX, double baryY,
819 std::vector<int>& edgesThis, std::vector<double>& addCoo, std::map<INTERP_KERNEL::Node *,int> mapAddCoo) const
822 _start->fillGlobalInfoAbs(mapThis,mapOther,offset1,offset2,fact,baryX,baryY,addCoo,mapAddCoo,tmp);
823 _end->fillGlobalInfoAbs(mapThis,mapOther,offset1,offset2,fact,baryX,baryY,addCoo,mapAddCoo,tmp+1);
826 edgesThis.push_back(tmp[0]);
827 edgesThis.push_back(tmp[1]);
831 edgesThis.push_back(tmp[1]);
832 edgesThis.push_back(tmp[0]);
836 void EdgeArcCircle::fillGlobalInfoAbs2(const std::map<INTERP_KERNEL::Node *,int>& mapThis, const std::map<INTERP_KERNEL::Node *,int>& mapOther, int offset1, int offset2, double fact, double baryX, double baryY,
837 std::vector<int>& edgesOther, std::vector<double>& addCoo, std::map<INTERP_KERNEL::Node *,int>& mapAddCoo) const
839 _start->fillGlobalInfoAbs2(mapThis,mapOther,offset1,offset2,fact,baryX,baryY,addCoo,mapAddCoo,edgesOther);
840 _end->fillGlobalInfoAbs2(mapThis,mapOther,offset1,offset2,fact,baryX,baryY,addCoo,mapAddCoo,edgesOther);