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FEBox.cpp
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/*This file is part of the FEBio Studio source code and is licensed under the MIT license
listed below.
See Copyright-FEBio-Studio.txt for details.
Copyright (c) 2021 University of Utah, The Trustees of Columbia University in
the City of New York, and others.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.*/
// FEBoxMesher.cpp: implementation of the FEBoxMesher class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "FEBox.h"
#include "FEModifier.h"
#include <GeomLib/GPrimitive.h>
//-----------------------------------------------------------------------------
// Class constructor
FEBoxMesher::FEBoxMesher(GBox* po)
{
m_pobj = po;
m_ctype = SIMPLE;
m_nelem = 0;
m_r = 0.5;
m_nx = m_ny = m_nz = m_ns = 10;
m_gx = m_gy = m_gz = m_gr = 1;
m_bx = m_by = m_bz = m_br = false;
AddIntParam(m_ctype, "ctype", "Mesh Type")->SetEnumNames("Regular\0Butterfly 3D\0Butterfly 2D\0");
AddDoubleParam(m_r, "r", "Ratio");
AddIntParam(m_nx, "nx", "Nx");
AddIntParam(m_ny, "ny", "Ny");
AddIntParam(m_nz, "nz", "Nz");
AddIntParam(m_ns, "ns", "Segments");
AddDoubleParam(m_gx, "gx", "X-bias");
AddDoubleParam(m_gy, "gy", "Y-bias");
AddDoubleParam(m_gz, "gz", "Z-bias");
AddDoubleParam(m_gr, "gr", "R-bias");
AddBoolParam(m_bx, "bx", "X-mirrored bias");
AddBoolParam(m_by, "by", "Y-mirrored bias");
AddBoolParam(m_bz, "bz", "Z-mirrored bias");
AddBoolParam(m_br, "br", "R-mirrored bias");
AddIntParam(m_nelem, "elem", "Element")->SetEnumNames("Hex8\0Hex20\0Hex27\0Tet4\0Tet10\0Tet15\0Tet20\0");
}
//-----------------------------------------------------------------------------
void FEBoxMesher::SetResolution(int nx, int ny, int nz)
{
SetIntValue(NX, nx);
SetIntValue(NY, ny);
SetIntValue(NZ, nz);
}
//-----------------------------------------------------------------------------
// Build the FSMesh
FSMesh* FEBoxMesher::BuildMesh()
{
assert(m_pobj);
FSMesh* pm = 0;
m_ctype = GetIntValue(CTYPE);
m_nelem = GetIntValue(NELEM);
switch (m_ctype)
{
case SIMPLE : pm = CreateRegular(); break;
case BUTTERFLY3D: pm = CreateButterfly3D(); break;
case BUTTERFLY2D: pm = CreateButterfly2D(); break;
default:
assert(false);
}
return pm;
}
//-----------------------------------------------------------------------------
bool FEBoxMesher::BuildMultiBlock()
{
m_ctype = GetIntValue(CTYPE);
switch (m_ctype)
{
case SIMPLE : return CreateRegularBoxMesh(); break;
case BUTTERFLY3D: return CreateButterfly3DMesh(); break;
case BUTTERFLY2D: return CreateButterfly2DMesh(); break;
default:
assert(false);
}
return false;
}
bool FEBoxMesher::CreateRegularBoxMesh()
{
// get object parameters
ParamBlock& param = m_pobj->GetParamBlock();
double w = 0.5 * param[GBox::WIDTH].GetFloatValue();
double h = 0.5 * param[GBox::HEIGHT].GetFloatValue();
double d = param[GBox::DEPTH].GetFloatValue();
// get mesh parameters
m_nx = GetIntValue(NX);
m_ny = GetIntValue(NY);
m_nz = GetIntValue(NZ);
m_gx = GetFloatValue(GX);
m_gy = GetFloatValue(GY);
m_gz = GetFloatValue(GZ);
m_bx = GetBoolValue(GX2);
m_by = GetBoolValue(GY2);
m_bz = GetBoolValue(GZ2);
ClearMB();
// create the MB nodes
AddNode(vec3d(-w, -h, 0));
AddNode(vec3d(w, -h, 0));
AddNode(vec3d(w, h, 0));
AddNode(vec3d(-w, h, 0));
AddNode(vec3d(-w, -h, d));
AddNode(vec3d(w, -h, d));
AddNode(vec3d(w, h, d));
AddNode(vec3d(-w, h, d));
// create the MB blocks
MBBlock& b1 = AddBlock(0, 1, 2, 3, 4, 5, 6, 7);
b1.SetID(0);
b1.SetSizes(m_nx, m_ny, m_nz);
b1.SetZoning(m_gx, m_gy, m_gz, m_bx, m_by, m_bz);
// build the MB data
BuildMB();
// assign face ID's
SetBlockFaceID(b1, 0, 1, 2, 3, 4, 5);
MBFace& F1 = GetBlockFace(0, 0); SetFaceEdgeID(F1, 0, 9, 4, 8);
MBFace& F2 = GetBlockFace(0, 1); SetFaceEdgeID(F2, 1, 10, 5, 9);
MBFace& F3 = GetBlockFace(0, 2); SetFaceEdgeID(F3, 2, 11, 6, 10);
MBFace& F4 = GetBlockFace(0, 3); SetFaceEdgeID(F4, 3, 8, 7, 11);
MBFace& F5 = GetBlockFace(0, 4); SetFaceEdgeID(F5, 2, 1, 0, 3);
MBFace& F6 = GetBlockFace(0, 5); SetFaceEdgeID(F6, 4, 5, 6, 7);
GetMBNode(0).SetID(0);
GetMBNode(1).SetID(1);
GetMBNode(2).SetID(2);
GetMBNode(3).SetID(3);
GetMBNode(4).SetID(4);
GetMBNode(5).SetID(5);
GetMBNode(6).SetID(6);
GetMBNode(7).SetID(7);
UpdateMB();
return true;
}
bool FEBoxMesher::CreateButterfly3DMesh()
{
// get object parameters
ParamBlock& param = m_pobj->GetParamBlock();
double w = param[GBox::WIDTH].GetFloatValue();
double h = param[GBox::HEIGHT].GetFloatValue();
double d = param[GBox::DEPTH].GetFloatValue();
// get mesh parameters
m_r = GetFloatValue(RATIO);
m_nx = GetIntValue(NX);
m_ny = GetIntValue(NY);
m_nz = GetIntValue(NZ);
m_ns = GetIntValue(NSEG);
m_bx = GetBoolValue(GX2);
m_by = GetBoolValue(GY2);
m_bz = GetBoolValue(GZ2);
m_br = GetBoolValue(GR2);
m_gx = GetFloatValue(GX);
m_gy = GetFloatValue(GY);
m_gz = GetFloatValue(GZ);
m_gr = GetFloatValue(GR);
// check parameters
if (m_nx < 1) m_nx = 1;
if (m_ny < 1) m_ny = 1;
if (m_nz < 1) m_nz = 1;
if (m_ns < 1) m_ns = 1;
if (m_r < 0.001) m_r = .001;
if (m_r > 0.999) m_r = .999;
if (m_nx == 1) m_bx = false;
if (m_ny == 1) m_by = false;
if (m_nz == 1) m_bz = false;
if (m_ns == 1) m_br = false;
ClearMB();
// create the MB nodes
double r1 = 0.5;
double r2 = m_r * r1;
double d1 = d * (1 - m_r) * 0.5;
double d2 = d - d1;
AddNode(vec3d(-w * r1, -h * r1, 0));
AddNode(vec3d(w * r1, -h * r1, 0));
AddNode(vec3d(w * r1, h * r1, 0));
AddNode(vec3d(-w * r1, h * r1, 0));
AddNode(vec3d(-w * r1, -h * r1, d));
AddNode(vec3d(w * r1, -h * r1, d));
AddNode(vec3d(w * r1, h * r1, d));
AddNode(vec3d(-w * r1, h * r1, d));
AddNode(vec3d(-w * r2, -h * r2, d1));
AddNode(vec3d(w * r2, -h * r2, d1));
AddNode(vec3d(w * r2, h * r2, d1));
AddNode(vec3d(-w * r2, h * r2, d1));
AddNode(vec3d(-w * r2, -h * r2, d2));
AddNode(vec3d(w * r2, -h * r2, d2));
AddNode(vec3d(w * r2, h * r2, d2));
AddNode(vec3d(-w * r2, h * r2, d2));
// create the MB block
MBBlock& b1 = AddBlock(8, 9, 10, 11, 12, 13, 14, 15);
b1.SetID(0);
b1.SetSizes(m_nx, m_ny, m_nz);
b1.SetZoning(m_gx, m_gy, m_gz, m_bx, m_by, m_bz);
MBBlock& b2 = AddBlock(8, 0, 1, 9, 12, 4, 5, 13);
b2.SetID(0);
b2.SetSizes(m_ns, m_nx, m_nz);
b2.SetZoning(m_gr, m_gx, m_gz, m_br, m_bx, m_bz);
MBBlock& b3 = AddBlock(9, 1, 2, 10, 13, 5, 6, 14);
b3.SetID(0);
b3.SetSizes(m_ns, m_ny, m_nz);
b3.SetZoning(m_gr, m_gy, m_gz, m_br, m_by, m_bz);
MBBlock& b4 = AddBlock(10, 2, 3, 11, 14, 6, 7, 15);
b4.SetID(0);
b4.SetSizes(m_ns, m_nx, m_nz);
b4.SetZoning(m_gr, (m_bx ? m_gx : 1 / m_gx), m_gz, m_br, m_bx, m_bz);
MBBlock& b5 = AddBlock(11, 3, 0, 8, 15, 7, 4, 12);
b5.SetID(0);
b5.SetSizes(m_ns, m_ny, m_nz);
b5.SetZoning(m_gr, (m_by ? m_gy : 1 / m_gy), m_gz, m_br, m_by, m_bz);
MBBlock& b6 = AddBlock(11, 10, 9, 8, 3, 2, 1, 0);
b6.SetID(0);
b6.SetSizes(m_nx, m_ny, m_ns);
b6.SetZoning(m_gx, (m_by ? m_gy : 1 / m_gy), m_gr, m_bx, m_by, m_br);
MBBlock& b7 = AddBlock(12, 13, 14, 15, 4, 5, 6, 7);
b7.SetID(0);
b7.SetSizes(m_nx, m_ny, m_ns);
b7.SetZoning(m_gx, m_gy, m_gr, m_bx, m_by, m_br);
// update the MB data
BuildMB();
// next, we assign the face ID's
MBFace& F1 = GetBlockFace(1, 1); F1.SetID(0);
MBFace& F2 = GetBlockFace(2, 1); F2.SetID(1);
MBFace& F3 = GetBlockFace(3, 1); F3.SetID(2);
MBFace& F4 = GetBlockFace(4, 1); F4.SetID(3);
MBFace& F5 = GetBlockFace(5, 5); F5.SetID(4);
MBFace& F6 = GetBlockFace(6, 5); F6.SetID(5);
// next, assign the edge ID's
GetFaceEdge(F1, 0).SetID(0);
GetFaceEdge(F2, 0).SetID(1);
GetFaceEdge(F3, 0).SetID(2);
GetFaceEdge(F4, 0).SetID(3);
GetFaceEdge(F1, 2).SetID(4);
GetFaceEdge(F2, 2).SetID(5);
GetFaceEdge(F3, 2).SetID(6);
GetFaceEdge(F4, 2).SetID(7);
GetFaceEdge(F1, 3).SetID(8);
GetFaceEdge(F2, 3).SetID(9);
GetFaceEdge(F3, 3).SetID(10);
GetFaceEdge(F4, 3).SetID(11);
// assign the node ID's
GetMBNode(0).SetID(0);
GetMBNode(1).SetID(1);
GetMBNode(2).SetID(2);
GetMBNode(3).SetID(3);
GetMBNode(4).SetID(4);
GetMBNode(5).SetID(5);
GetMBNode(6).SetID(6);
GetMBNode(7).SetID(7);
UpdateMB();
return true;
}
//-----------------------------------------------------------------------------
// Build a 2D butterfly mesh
bool FEBoxMesher::CreateButterfly2DMesh()
{
// get object parameters
ParamBlock& param = m_pobj->GetParamBlock();
double w = param[GBox::WIDTH].GetFloatValue();
double h = param[GBox::HEIGHT].GetFloatValue();
double d = param[GBox::DEPTH].GetFloatValue();
// get mesh parameters
m_r = GetFloatValue(RATIO);
m_nx = GetIntValue(NX);
m_ny = GetIntValue(NY);
m_nz = GetIntValue(NZ);
m_ns = GetIntValue(NSEG);
m_bx = GetBoolValue(GX2);
m_by = GetBoolValue(GY2);
m_bz = GetBoolValue(GZ2);
m_br = GetBoolValue(GR2);
m_gx = GetFloatValue(GX);
m_gy = GetFloatValue(GY);
m_gz = GetFloatValue(GZ);
m_gr = GetFloatValue(GR);
// check parameters
if (m_nx < 1) m_nx = 1;
if (m_ny < 1) m_ny = 1;
if (m_nz < 1) m_nz = 1;
if (m_ns < 1) m_ns = 1;
if (m_r < 0.001) m_r = .001;
if (m_r > 0.999) m_r = .999;
if (m_nx == 1) m_bx = false;
if (m_ny == 1) m_by = false;
if (m_nz == 1) m_bz = false;
if (m_ns == 1) m_br = false;
ClearMB();
// create the MB nodes
double r1 = 0.5;
double r2 = m_r * r1;
AddNode(vec3d(-w * r1, -h * r1, 0));
AddNode(vec3d(w * r1, -h * r1, 0));
AddNode(vec3d(w * r1, h * r1, 0));
AddNode(vec3d(-w * r1, h * r1, 0));
AddNode(vec3d(-w * r1, -h * r1, d));
AddNode(vec3d(w * r1, -h * r1, d));
AddNode(vec3d(w * r1, h * r1, d));
AddNode(vec3d(-w * r1, h * r1, d));
AddNode(vec3d(-w * r2, -h * r2, 0));
AddNode(vec3d(w * r2, -h * r2, 0));
AddNode(vec3d(w * r2, h * r2, 0));
AddNode(vec3d(-w * r2, h * r2, 0));
AddNode(vec3d(-w * r2, -h * r2, d));
AddNode(vec3d(w * r2, -h * r2, d));
AddNode(vec3d(w * r2, h * r2, d));
AddNode(vec3d(-w * r2, h * r2, d));
// create the MB block
MBBlock& b1 = AddBlock(8, 9, 10, 11, 12, 13, 14, 15);
b1.SetID(0);
b1.SetSizes(m_nx, m_ny, m_nz);
b1.SetZoning(m_gx, m_gy, m_gz, m_bx, m_by, m_bz);
MBBlock& b2 = AddBlock(8, 0, 1, 9, 12, 4, 5, 13);
b2.SetID(0);
b2.SetSizes(m_ns, m_nx, m_nz);
b2.SetZoning(m_gr, m_gx, m_gz, m_br, m_bx, m_bz);
MBBlock& b3 = AddBlock(9, 1, 2, 10, 13, 5, 6, 14);
b3.SetID(0);
b3.SetSizes(m_ns, m_ny, m_nz);
b3.SetZoning(m_gr, m_gy, m_gz, m_br, m_by, m_bz);
MBBlock& b4 = AddBlock(10, 2, 3, 11, 14, 6, 7, 15);
b4.SetID(0);
b4.SetSizes(m_ns, m_nx, m_nz);
b4.SetZoning(m_gr, (m_bx ? m_gx : 1 / m_gx), m_gz, m_br, m_bx, m_bz);
MBBlock& b5 = AddBlock(11, 3, 0, 8, 15, 7, 4, 12);
b5.SetID(0);
b5.SetSizes(m_ns, m_ny, m_nz);
b5.SetZoning(m_gr, (m_by ? m_gy : 1 / m_gy), m_gz, m_br, m_by, m_bz);
// update the MB data
BuildMB();
// next, we assign the face ID's
MBFace& F1 = GetBlockFace(1, 1); F1.SetID(0);
MBFace& F2 = GetBlockFace(2, 1); F2.SetID(1);
MBFace& F3 = GetBlockFace(3, 1); F3.SetID(2);
MBFace& F4 = GetBlockFace(4, 1); F4.SetID(3);
GetBlockFace(0, 4).SetID(4);
GetBlockFace(1, 4).SetID(4);
GetBlockFace(2, 4).SetID(4);
GetBlockFace(3, 4).SetID(4);
GetBlockFace(4, 4).SetID(4);
GetBlockFace(0, 5).SetID(5);
GetBlockFace(1, 5).SetID(5);
GetBlockFace(2, 5).SetID(5);
GetBlockFace(3, 5).SetID(5);
GetBlockFace(4, 5).SetID(5);
// next, assign the edge ID's
GetFaceEdge(F1, 0).SetID(0);
GetFaceEdge(F2, 0).SetID(1);
GetFaceEdge(F3, 0).SetID(2);
GetFaceEdge(F4, 0).SetID(3);
GetFaceEdge(F1, 2).SetID(4);
GetFaceEdge(F2, 2).SetID(5);
GetFaceEdge(F3, 2).SetID(6);
GetFaceEdge(F4, 2).SetID(7);
GetFaceEdge(F1, 3).SetID(8);
GetFaceEdge(F2, 3).SetID(9);
GetFaceEdge(F3, 3).SetID(10);
GetFaceEdge(F4, 3).SetID(11);
// assign the node ID's
GetMBNode(0).SetID(0);
GetMBNode(1).SetID(1);
GetMBNode(2).SetID(2);
GetMBNode(3).SetID(3);
GetMBNode(4).SetID(4);
GetMBNode(5).SetID(5);
GetMBNode(6).SetID(6);
GetMBNode(7).SetID(7);
UpdateMB();
return true;
}
//-----------------------------------------------------------------------------
// Build a 3D butterfly mesh
FSMesh* FEBoxMesher::CreateButterfly3D()
{
CreateButterfly3DMesh();
switch (m_nelem)
{
case 0: SetElementType(FE_HEX8); break;
case 1: SetElementType(FE_HEX20); break;
case 2: SetElementType(FE_HEX27); break;
default:
assert(false);
break;
}
// create the MB
return FEMultiBlockMesh::BuildMesh();
}
//-----------------------------------------------------------------------------
// Build a 2D butterfly mesh
FSMesh* FEBoxMesher::CreateButterfly2D()
{
CreateButterfly2DMesh();
switch (m_nelem)
{
case 0: SetElementType(FE_HEX8); break;
case 1: SetElementType(FE_HEX20); break;
case 2: SetElementType(FE_HEX27); break;
default:
assert(false);
break;
}
// create the MB
return FEMultiBlockMesh::BuildMesh();
}
//-----------------------------------------------------------------------------
FSMesh* FEBoxMesher::CreateRegular()
{
switch (m_nelem)
{
case 0: return CreateRegularHEX (); break;
case 1: return CreateRegularHEX (); break;
case 2: return CreateRegularHEX (); break;
case 3: return CreateRegularTET4(); break;
case 4: return CreateRegularTET10(); break;
case 5: return CreateRegularTET15(); break;
case 6: return CreateRegularTET20(); break;
default:
assert(false);
}
return 0;
}
//-----------------------------------------------------------------------------
// Create a regular mesh
FSMesh* FEBoxMesher::CreateRegularHEX()
{
CreateRegularBoxMesh();
switch (m_nelem)
{
case 0: SetElementType(FE_HEX8); break;
case 1: SetElementType(FE_HEX20); break;
case 2: SetElementType(FE_HEX27); break;
default:
assert(false);
break;
}
return FEMultiBlockMesh::BuildMesh();
}
//-----------------------------------------------------------------------------
// Create a regular mesh
FSMesh* FEBoxMesher::CreateRegularTET4()
{
int i, j, k;
// get object parameters
ParamBlock& param = m_pobj->GetParamBlock();
double w = param[GBox::WIDTH ].GetFloatValue();
double h = param[GBox::HEIGHT].GetFloatValue();
double d = param[GBox::DEPTH ].GetFloatValue();
// get mesh parameters
m_nx = GetIntValue(NX);
m_ny = GetIntValue(NY);
m_nz = GetIntValue(NZ);
m_bx = GetBoolValue(GX2);
m_by = GetBoolValue(GY2);
m_bz = GetBoolValue(GZ2);
m_gx = GetFloatValue(GX);
m_gy = GetFloatValue(GY);
m_gz = GetFloatValue(GZ);
m_nelem = GetIntValue(NELEM);
// check parameters
if (m_nx < 1) m_nx = 1;
if (m_ny < 1) m_ny = 1;
if (m_nz < 1) m_nz = 1;
if (m_nx == 1) m_bx = false;
if (m_ny == 1) m_by = false;
if (m_nz == 1) m_bz = false;
int nodes = (m_nx+1)*(m_ny+1)*(m_nz+1);
int elems = 6*m_nx*m_ny*m_nz;
// allocate storage
FSMesh* pm = new FSMesh;
pm->Create(nodes, elems);
double gx = 1;
double gy = 1;
double gz = 1;
double fx = m_gx;
double fy = m_gy;
double fz = m_gz;
if (m_bx)
{
gx = 2; if (m_nx%2) gx += fx;
for (i=0; i<m_nx/2-1; ++i) gx = fx*gx+2;
gx = w / gx;
}
else
{
for (i=0; i<m_nx-1; ++i) gx = fx*gx+1;
gx = w / gx;
}
if (m_by)
{
gy = 2; if (m_ny%2) gy += fy;
for (i=0; i<m_ny/2-1; ++i) gy = fy*gy+2;
gy = h / gy;
}
else
{
for (i=0; i<m_ny-1; ++i) gy = fy*gy+1;
gy = h / gy;
}
if (m_bz)
{
gz = 2; if (m_nz%2) gz += fz;
for (i=0; i<m_nz/2-1; ++i) gz = fz*gz+2;
gz = d / gz;
}
else
{
for (i=0; i<m_nz-1; ++i) gz = fz*gz+1;
gz = d / gz;
}
// position the nodes
double x, y, z;
double dx, dy, dz;
FSNode* pn = pm->NodePtr();
dx = gx;
x = -w/2;
for (i=0; i<=m_nx; i++)
{
dy = gy;
y = -h/2;
for (j=0; j<=m_ny; j++)
{
dz = gz;
z = 0;
for (k=0; k<=m_nz; k++, pn++)
{
pn->r = vec3d(x, y, z);
z += dz;
dz *= fz;
if (m_bz && (k == m_nz/2-1))
{
if (m_nz%2 == 0) dz /= fz;
fz = 1.0/fz;
}
}
if (m_bz) fz = 1.0/fz;
y += dy;
dy *= fy;
if (m_by && (j == m_ny/2-1))
{
if (m_ny%2 == 0) dy /= fy;
fy = 1.0/fy;
}
}
if (m_by) fy = 1.0/fy;
x += dx;
dx *= fx;
if (m_bx && (i == m_nx/2-1))
{
if (m_nx%2 == 0) dx /= fx;
fx = 1.0/fx;
}
}
// assign the node ID's
pm->Node( NodeIndex( 0, 0, 0) ).m_gid = 0;
pm->Node( NodeIndex(m_nx, 0, 0) ).m_gid = 1;
pm->Node( NodeIndex(m_nx, m_ny, 0) ).m_gid = 2;
pm->Node( NodeIndex( 0, m_ny, 0) ).m_gid = 3;
pm->Node( NodeIndex( 0, 0, m_nz) ).m_gid = 4;
pm->Node( NodeIndex(m_nx, 0, m_nz) ).m_gid = 5;
pm->Node( NodeIndex(m_nx, m_ny, m_nz) ).m_gid = 6;
pm->Node( NodeIndex( 0, m_ny, m_nz) ).m_gid = 7;
// create the connectivity
int TET[6][4] = {
{1, 2, 3, 6}, {0, 1, 3, 6}, {0, 6, 3, 7},
{1, 5, 6, 0}, {4, 7, 5, 0}, {5, 7, 6, 0}};
int n[8], eid = 0;
for (i=0; i<m_nx; i++)
for (j=0; j<m_ny; j++)
for (k=0; k<m_nz; k++)
{
n[0] = NodeIndex(i ,j ,k);
n[1] = NodeIndex(i+1,j ,k);
n[2] = NodeIndex(i+1,j+1,k);
n[3] = NodeIndex(i ,j+1,k);
n[4] = NodeIndex(i ,j ,k+1);
n[5] = NodeIndex(i+1,j ,k+1);
n[6] = NodeIndex(i+1,j+1,k+1);
n[7] = NodeIndex(i ,j+1,k+1);
for (int l=0; l<6; ++l)
{
FEElement_* pe = pm->ElementPtr(eid++);
pe->m_node[0] = n[TET[l][0]];
pe->m_node[1] = n[TET[l][1]];
pe->m_node[2] = n[TET[l][2]];
pe->m_node[3] = n[TET[l][3]];
pe->m_gid = 0;
pe->SetType(FE_TET4);
}
}
// build faces
BuildTetFaces(pm);
// build edges
BuildEdges(pm);
// update the mesh
pm->BuildMesh();
return pm;
}
//-----------------------------------------------------------------------------
// Build faces of a regular hex mesh
void FEBoxMesher::BuildHexFaces(FSMesh* pm)
{
int i, j, k;
// calculate the nr of faces
int faces = 2*(m_nx*m_ny + m_ny*m_nz + m_nx*m_nz);
pm->Create(0,0,faces);
// build the faces
FSFace* pf = pm->FacePtr();
// -Y face
for (i=0; i<m_nx; ++i)
for (k=0; k<m_nz; ++k, ++pf)
{
FSFace& f = *pf;
f.SetType(FE_FACE_QUAD4);
f.m_gid = 0;
f.m_sid = 0;
f.n[0] = NodeIndex(i , 0, k );
f.n[1] = NodeIndex(i+1, 0, k );
f.n[2] = NodeIndex(i+1, 0, k+1);
f.n[3] = NodeIndex(i , 0, k+1);
}
// +X face
for (j=0; j<m_ny; ++j)
for (k=0; k<m_nz; ++k, ++pf)
{
FSFace& f = *pf;
f.SetType(FE_FACE_QUAD4);
f.m_gid = 1;
f.m_sid = 1;
f.n[0] = NodeIndex(m_nx, j , k );
f.n[1] = NodeIndex(m_nx, j+1, k );
f.n[2] = NodeIndex(m_nx, j+1, k+1);
f.n[3] = NodeIndex(m_nx, j , k+1);
}
// +Y face
for (i=m_nx-1; i>=0; --i)
for (k=0; k<m_nz; ++k, ++pf)
{
FSFace& f = *pf;
f.SetType(FE_FACE_QUAD4);
f.m_gid = 2;
f.m_sid = 2;
f.n[0] = NodeIndex(i+1, m_ny, k );
f.n[1] = NodeIndex(i , m_ny, k );
f.n[2] = NodeIndex(i , m_ny, k+1);
f.n[3] = NodeIndex(i+1, m_ny, k+1);
}
// -X face
for (j=m_ny-1; j>=0; --j)
for (k=0; k<m_nz; ++k, ++pf)
{
FSFace& f = *pf;
f.SetType(FE_FACE_QUAD4);
f.m_gid = 3;
f.m_sid = 3;
f.n[0] = NodeIndex(0, j+1, k );
f.n[1] = NodeIndex(0, j , k );
f.n[2] = NodeIndex(0, j , k+1);
f.n[3] = NodeIndex(0, j+1, k+1);
}
// -Z face
for (i=0; i<m_nx; ++i)
for (j=m_ny-1; j>=0; --j, ++pf)
{
FSFace& f = *pf;
f.SetType(FE_FACE_QUAD4);
f.m_gid = 4;
f.m_sid = 4;
f.n[0] = NodeIndex(i , j , 0);
f.n[1] = NodeIndex(i , j+1, 0);
f.n[2] = NodeIndex(i+1, j+1, 0);
f.n[3] = NodeIndex(i+1, j , 0);
}
// +Z face
for (i=0; i<m_nx; ++i)
for (j=0; j<m_ny; ++j, ++pf)
{
FSFace& f = *pf;
f.SetType(FE_FACE_QUAD4);
f.m_gid = 5;
f.m_sid = 5;
f.n[0] = NodeIndex(i , j , m_nz);
f.n[1] = NodeIndex(i+1, j , m_nz);
f.n[2] = NodeIndex(i+1, j+1, m_nz);
f.n[3] = NodeIndex(i , j+1, m_nz);
}
}
//-----------------------------------------------------------------------------
// Build the faces of a regular tet mesh
void FEBoxMesher::BuildTetFaces(FSMesh* pm)
{
int i, j, k;
// calculate the nr of faces
int faces = 4*(m_nx*m_ny + m_ny*m_nz + m_nx*m_nz);
pm->Create(0,0,faces);
// build the faces
FSFace* pf = pm->FacePtr();
// -Y face
for (i=0; i<m_nx; ++i)
for (k=0; k<m_nz; ++k)
{
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 0;
pf->m_sid = 0;
pf->n[0] = NodeIndex(i , 0, k );
pf->n[1] = NodeIndex(i+1, 0, k );
pf->n[2] = NodeIndex(i+1, 0, k+1);
pf->n[3] = pf->n[2];
++pf;
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 0;
pf->m_sid = 0;
pf->n[0] = NodeIndex(i+1, 0, k+1);
pf->n[1] = NodeIndex(i , 0, k+1);
pf->n[2] = NodeIndex(i , 0, k );
pf->n[3] = pf->n[2];
++pf;
}
// +X face
for (j=0; j<m_ny; ++j)
for (k=0; k<m_nz; ++k)
{
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 1;
pf->m_sid = 1;
pf->n[0] = NodeIndex(m_nx, j , k );
pf->n[1] = NodeIndex(m_nx, j+1, k );
pf->n[2] = NodeIndex(m_nx, j+1, k+1);
pf->n[3] = pf->n[2];
++pf;
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 1;
pf->m_sid = 1;
pf->n[0] = NodeIndex(m_nx, j+1, k+1);
pf->n[1] = NodeIndex(m_nx, j , k+1);
pf->n[2] = NodeIndex(m_nx, j , k );
pf->n[3] = pf->n[2];
++pf;
}
// +Y face
for (i=m_nx-1; i>=0; --i)
for (k=0; k<m_nz; ++k)
{
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 2;
pf->m_sid = 2;
pf->n[0] = NodeIndex(i+1, m_ny, k );
pf->n[1] = NodeIndex(i , m_ny, k );
pf->n[2] = NodeIndex(i+1, m_ny, k+1);
pf->n[3] = pf->n[2];
++pf;
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 2;
pf->m_sid = 2;
pf->n[0] = NodeIndex(i , m_ny, k );
pf->n[1] = NodeIndex(i , m_ny, k+1);
pf->n[2] = NodeIndex(i+1, m_ny, k+1);
pf->n[3] = pf->n[2];
++pf;
}
// -X face
for (j=m_ny-1; j>=0; --j)
for (k=0; k<m_nz; ++k)
{
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 3;
pf->m_sid = 3;
pf->n[0] = NodeIndex(0, j+1, k );
pf->n[1] = NodeIndex(0, j , k );
pf->n[2] = NodeIndex(0, j+1, k+1);
pf->n[3] = pf->n[2];
++pf;
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 3;
pf->m_sid = 3;
pf->n[0] = NodeIndex(0, j , k );
pf->n[1] = NodeIndex(0, j , k+1);
pf->n[2] = NodeIndex(0, j+1, k+1);
pf->n[3] = pf->n[2];
++pf;
}
// -Z face
for (i=0; i<m_nx; ++i)
for (j=m_ny-1; j>=0; --j)
{
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 4;
pf->m_sid = 4;
pf->n[0] = NodeIndex(i , j , 0);
pf->n[1] = NodeIndex(i , j+1, 0);
pf->n[2] = NodeIndex(i+1, j , 0);
pf->n[3] = pf->n[2];
++pf;
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 4;
pf->m_sid = 4;
pf->n[0] = NodeIndex(i+1, j , 0);
pf->n[1] = NodeIndex(i , j+1, 0);
pf->n[2] = NodeIndex(i+1, j+1, 0);
pf->n[3] = pf->n[2];
++pf;
}
// +Z face
for (i=0; i<m_nx; ++i)
for (j=0; j<m_ny; ++j)
{
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 5;
pf->m_sid = 5;
pf->n[0] = NodeIndex(i , j , m_nz);
pf->n[1] = NodeIndex(i+1, j , m_nz);
pf->n[2] = NodeIndex(i , j+1, m_nz);
pf->n[3] = pf->n[2];
++pf;
pf->SetType(FE_FACE_TRI3);
pf->m_gid = 5;
pf->m_sid = 5;
pf->n[0] = NodeIndex(i+1, j , m_nz);
pf->n[1] = NodeIndex(i+1, j+1, m_nz);
pf->n[2] = NodeIndex(i , j+1, m_nz);
pf->n[3] = pf->n[2];
++pf;
}
}
//-----------------------------------------------------------------------------
// Build the edges of a box mesh
void FEBoxMesher::BuildEdges(FSMesh* pm)
{
int i;
// calculate the nr of edges
int edges = 4*(m_nx + m_ny + m_nz);
pm->Create(0,0,0,edges);
FSEdge* pe = pm->EdgePtr();
for (i= 0; i<m_nx; ++i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 0; pe->n[0] = NodeIndex( i, 0, 0); pe->n[1] = NodeIndex(i+1 , 0, 0); }
for (i= 0; i<m_ny; ++i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 1; pe->n[0] = NodeIndex(m_nx, i, 0); pe->n[1] = NodeIndex(m_nx, i+1, 0); }
for (i=m_nx; i>= 1; --i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 2; pe->n[0] = NodeIndex( i, m_ny, 0); pe->n[1] = NodeIndex(i-1 , m_ny, 0); }
for (i=m_ny; i>= 1; --i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 3; pe->n[0] = NodeIndex( 0, i, 0); pe->n[1] = NodeIndex( 0, i-1, 0); }
for (i= 0; i<m_nx; ++i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 4; pe->n[0] = NodeIndex( i, 0, m_nz); pe->n[1] = NodeIndex(i+1 , 0, m_nz); }
for (i= 0; i<m_ny; ++i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 5; pe->n[0] = NodeIndex(m_nx, i, m_nz); pe->n[1] = NodeIndex(m_nx, i+1, m_nz); }
for (i=m_nx; i>= 1; --i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 6; pe->n[0] = NodeIndex( i, m_ny, m_nz); pe->n[1] = NodeIndex(i-1 , m_ny, m_nz); }
for (i=m_ny; i>= 1; --i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 7; pe->n[0] = NodeIndex( 0, i, m_nz); pe->n[1] = NodeIndex( 0, i-1, m_nz); }
for (i=0 ; i<m_nz; ++i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 8; pe->n[0] = NodeIndex( 0, 0, i); pe->n[1] = NodeIndex( 0, 0, i+1); }
for (i=0 ; i<m_nz; ++i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 9; pe->n[0] = NodeIndex(m_nx, 0, i); pe->n[1] = NodeIndex(m_nx, 0, i+1); }
for (i=0 ; i<m_nz; ++i, ++pe) { pe->SetType(FE_EDGE2); pe->m_gid = 10; pe->n[0] = NodeIndex(m_nx, m_ny, i); pe->n[1] = NodeIndex(m_nx, m_ny, i+1); }