void cartesianMeshExtractor::createMesh()
{
Info << "Extracting polyMesh" << endl;
//- create points and pointLeaves addressing
createPointsAndAddressing();
//- create the mesh
createPolyMesh();
//- decompose split-hex cells into tetrahedra and pyramids
decomposeSplitHexesIntoTetsAndPyramids();
//- remove unused vertices
polyMeshGenModifier(mesh_).removeUnusedVertices();
Info << "Mesh has :" << nl
<< mesh_.points().size() << " vertices " << nl
<< mesh_.faces().size() << " faces" << nl
<< mesh_.cells().size() << " cells" << endl;
if( Pstream::parRun() )
{
label nCells = mesh_.cells().size();
reduce(nCells, sumOp<label>());
Info << "Total number of cells " << nCells << endl;
}
if( mesh_.cells().size() == 0 )
{
FatalErrorIn
(
"void cartesianMeshExtractor::createMesh()"
) << "There are no cells in the mesh!"
<< nl << "The reasons for this can be fwofold:"
<< nl << "1. Inadequate mesh resolution."
<< nl << "2. You maxCellSize is a multiplier of the domain length."
<< " This can be reolved by reducing the maxCellSize by a fraction."
<< "i.e. 2.49999 instead of 2.5." << exit(FatalError);
}
Info << "Finished extracting polyMesh" << endl;
}
void voronoiMeshExtractor::createMesh()
{
Info << "Extracting voronoi mesh" << endl;
//- copy tet points into the mesh
createPoints();
//- create the mesh
createPolyMesh();
polyMeshGenModifier(mesh_).reorderBoundaryFaces();
polyMeshGenModifier(mesh_).removeUnusedVertices();
Info << "Mesh has :" << nl
<< mesh_.points().size() << " vertices " << nl
<< mesh_.faces().size() << " faces" << nl
<< mesh_.cells().size() << " cells" << endl;
Info << "Finished extracting voronoi mesh" << endl;
}
bool NavMesh::generateMesh()
{
// Parse objects from level into RC-compatible format
NavModelData data = NavMeshLoader::mergeModels(
NavMeshLoader::parseTerrainData(getWorldBox(), 0),
NavMeshLoader::parseStaticObjects(getWorldBox()),
true);
// Check for no geometry
if(!data.getVertCount())
return false;
// Free intermediate and final results
freeIntermediates(true);
// Create mInPolys if we don't have one already
if(!mInPolys && mSaveIntermediates)
mInPolys = new ConcretePolyList();
// Reconstruct input geometry from out data
if(mSaveIntermediates)
RCtoPolyList(&data, mInPolys);
// Recast initialisation data
rcContext ctx(false);
rcConfig cfg;
dMemset(&cfg, 0, sizeof(cfg));
cfg.cs = mCellSize;
cfg.ch = mCellHeight;
rcCalcBounds(data.verts, data.getVertCount(), cfg.bmin, cfg.bmax);
rcCalcGridSize(cfg.bmin, cfg.bmax, cfg.cs, &cfg.width, &cfg.height);
cfg.walkableHeight = mCeil(mWalkableHeight / mCellHeight);
cfg.walkableClimb = mCeil(mWalkableClimb / mCellHeight);
cfg.walkableRadius = mCeil(mWalkableRadius / mCellSize);
cfg.walkableSlopeAngle = mWalkableSlope;
cfg.borderSize = mBorderSize;
cfg.detailSampleDist = mDetailSampleDist;
cfg.detailSampleMaxError = mDetailSampleMaxError;
cfg.maxEdgeLen = mMaxEdgeLen;
cfg.maxSimplificationError = mMaxSimplificationError;
cfg.maxVertsPerPoly = 3;
cfg.minRegionArea = mMinRegionArea;
cfg.mergeRegionArea = mMergeRegionArea;
cfg.tileSize = mTileSize;
if(!createPolyMesh(cfg, data, &ctx))
return false;
//Detour initialisation data
dtNavMeshCreateParams params;
dMemset(¶ms, 0, sizeof(params));
params.walkableHeight = cfg.walkableHeight;
params.walkableRadius = cfg.walkableRadius;
params.walkableClimb = cfg.walkableClimb;
params.tileX = 0;
params.tileY = 0;
params.tileLayer = 0;
rcVcopy(params.bmax, cfg.bmax);
rcVcopy(params.bmin, cfg.bmin);
params.buildBvTree = true;
params.ch = cfg.ch;
params.cs = cfg.cs;
params.verts = pm->verts;
params.vertCount = pm->nverts;
params.polys = pm->polys;
params.polyAreas = pm->areas;
params.polyFlags = pm->flags;
params.polyCount = pm->npolys;
params.nvp = pm->nvp;
params.detailMeshes = pmd->meshes;
params.detailVerts = pmd->verts;
params.detailVertsCount = pmd->nverts;
params.detailTris = pmd->tris;
params.detailTriCount = pmd->ntris;
if(!createNavMesh(params))
return false;
return true;
}
