/usr/include/liggghts/tri_mesh_planar_I.h is in libliggghts-dev 3.7.0+repack1-1.
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This is the
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╚══════╝╚═╝ ╚═════╝ ╚═════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚══════╝®
DEM simulation engine, released by
DCS Computing Gmbh, Linz, Austria
http://www.dcs-computing.com, office@dcs-computing.com
LIGGGHTS® is part of CFDEM®project:
http://www.liggghts.com | http://www.cfdem.com
Core developer and main author:
Christoph Kloss, christoph.kloss@dcs-computing.com
LIGGGHTS® is open-source, distributed under the terms of the GNU Public
License, version 2 or later. It is distributed in the hope that it will
be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You should have
received a copy of the GNU General Public License along with LIGGGHTS®.
If not, see http://www.gnu.org/licenses . See also top-level README
and LICENSE files.
LIGGGHTS® and CFDEM® are registered trade marks of DCS Computing GmbH,
the producer of the LIGGGHTS® software and the CFDEM®coupling software
See http://www.cfdem.com/terms-trademark-policy for details.
-------------------------------------------------------------------------
Contributing author and copyright for this file:
(if not contributing author is listed, this file has been contributed
by the core developer)
Copyright 2012- DCS Computing GmbH, Linz
Copyright 2009-2012 JKU Linz
------------------------------------------------------------------------- */
#ifndef LMP_TRI_MESH_PLANAR_I_H
#define LMP_TRI_MESH_PLANAR_I_H
/* ----------------------------------------------------------------------
generates a random point on the surface that lies within my subbox
additionally, point is within a distance of delta from active edges
so can generate a point within a distance delta from boundary on planar meshes
tests against active edges
------------------------------------------------------------------------- */
inline int TriMeshPlanar::generateRandomOwnedGhostWithin(double *pos,double delta)
{
int i, iSrf, iSrfCheck, iSrfCheckEdge, ntry;
bool farEnoughAway;
ntry = 0;
do
{
ntry++;
iSrf = generateRandomOwnedGhost(pos);
farEnoughAway = true;
if(minActiveEdgeDist_(iSrf) < delta)
{
i = 0;
while(i < 2*NUM_NODES && nearestActiveEdgeID_(iSrf)[i] >= 0 && farEnoughAway)
{
double min_dist = 2.0*delta;
const int nTri_j = TrackingMesh<NUM_NODES>::map_size(nearestActiveEdgeID_(iSrf)[i]);
for (int j = 0; j < nTri_j; j++)
{
iSrfCheck = TrackingMesh<NUM_NODES>::map(nearestActiveEdgeID_(iSrf)[i], j);
iSrfCheckEdge = nearestActiveEdgeIndex_(iSrf)[i];
const double dist = edgePointDist(iSrfCheck,iSrfCheckEdge,pos);
if (dist < min_dist)
min_dist = dist;
}
if(min_dist < delta)
farEnoughAway = false;
i++;
}
}
}
while(!farEnoughAway && ntry < MAXTRY_WITHIN);
if(ntry == MAXTRY_WITHIN)
error->warning(FLERR,"'All_in yes' did not succeed");
return iSrf;
}
/* ----------------------------------------------------------------------
search for position within the mesh - return ID, bary coords and normal dist
------------------------------------------------------------------------- */
inline bool TriMeshPlanar::locatePosition(double *pos,int &triID,double *bary,double &distance)
{
double p[3], pProjected[3], temp[3];
int nlocal = sizeLocal();
vectorCopy3D(pos,p);
// calc normal distance
vectorSubtract3D(p,center_(0),temp);
distance = vectorDot3D(temp,surfaceNorm(0));
// calc projected point
vectorScalarMult3D(surfaceNorm(0),distance,temp);
vectorSubtract3D(p,temp,pProjected);
for(int i = 0; i < nlocal; i++)
{
if(isInElement(pProjected,i))
{
triID = TrackingMesh<3>::id(i);
vectorSubtract3D(pProjected,node_(i)[0],temp);
MathExtraLiggghts::calcBaryTriCoords(temp,edgeVec(i),edgeLen(i),bary);
return true;
}
}
return false;
}
/* ----------------------------------------------------------------------
calculate position from tri ID and bary coords
------------------------------------------------------------------------- */
inline bool TriMeshPlanar::constructPositionFromBary(int triID,double *bary,double *pos)
{
if (TrackingMesh<3>::map_size(triID) > 1)
error->one(FLERR, "Internal error - implementation missing");
int itri = TrackingMesh<3>::map(triID, 0);
if(itri < 0) return false;
vectorZeroize3D(pos);
for(int i = 0; i < 3; i++)
vectorAddMultiple3D(pos, bary[i], node_(itri)[i], pos);
return true;
}
#endif
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