private void processTris( double xp, double yp, TriMesh mesh, TriMesh.TriList triList) { _edgeList.clear(); int ntri = triList.ntri(); TriMesh.Tri[] tris = triList.tris(); for (int itri=0; itri<ntri; ++itri) { TriMesh.Tri tri = tris[itri]; TriMesh.Tri ta = tri.triA(); TriMesh.Tri tb = tri.triB(); TriMesh.Tri tc = tri.triC(); TriMesh.Node na = tri.nodeA(); TriMesh.Node nb = tri.nodeB(); TriMesh.Node nc = tri.nodeC(); tri.centerCircle(_xy); double xt = _xy[0]-xp, yt = _xy[1]-yp; processTriNabor(xp,yp,xt,yt,mesh,ta,nb,nc); processTriNabor(xp,yp,xt,yt,mesh,tb,nc,na); processTriNabor(xp,yp,xt,yt,mesh,tc,na,nb); } } private void processTriNabor(
/** * Validates the specified tri. */ private void validate(Tri tri) { Check.state(tri!=null,"tri not null"); Node na = tri.nodeA(); Node nb = tri.nodeB(); Node nc = tri.nodeC(); validate(na); validate(nb); validate(nc); Tri ta = tri.triA(); Tri tb = tri.triB(); Tri tc = tri.triC(); if (ta!=null) Check.state(ta.triNabor(tri.nodeNabor(ta))==tri,"a nabors ok"); if (tb!=null) Check.state(tb.triNabor(tri.nodeNabor(tb))==tri,"b nabors ok"); if (tc!=null) Check.state(tc.triNabor(tri.nodeNabor(tc))==tri,"c nabors ok"); }
private void addTri(double xp, double yp, TriMesh.Tri tri) { _mesh.mark(tri); _triList.add(tri); addNode(tri.nodeA()); addNode(tri.nodeB()); addNode(tri.nodeC()); TriMesh.Tri ta = tri.triA(); TriMesh.Tri tb = tri.triB(); TriMesh.Tri tc = tri.triC(); if (needTri(xp,yp,ta)) addTri(xp,yp,ta); if (needTri(xp,yp,tb)) addTri(xp,yp,tb); if (needTri(xp,yp,tc)) addTri(xp,yp,tc); } private void addNode(TriMesh.Node node) {