int main(int argc, char *argv[])
{
using namespace Eigen;
using namespace std;
// Load a quad mesh generated by a conjugate field
igl::readOFF(TUTORIAL_SHARED_PATH "/inspired_mesh_quads_Conjugate.off", VQC, FQC);
// Convert it in a triangle mesh
FQCtri.resize(2*FQC.rows(), 3);
FQCtri << FQC.col(0),FQC.col(1),FQC.col(2),
FQC.col(2),FQC.col(3),FQC.col(0);
igl::slice( VQC, FQC.col(0).eval(), 1, PQC0);
igl::slice( VQC, FQC.col(1).eval(), 1, PQC1);
igl::slice( VQC, FQC.col(2).eval(), 1, PQC2);
igl::slice( VQC, FQC.col(3).eval(), 1, PQC3);
// Planarize it
igl::planarize_quad_mesh(VQC, FQC, 100, 0.005, VQCplan);
// Convert the planarized mesh to triangles
igl::slice( VQCplan, FQC.col(0).eval(), 1, PQC0plan);
igl::slice( VQCplan, FQC.col(1).eval(), 1, PQC1plan);
igl::slice( VQCplan, FQC.col(2).eval(), 1, PQC2plan);
igl::slice( VQCplan, FQC.col(3).eval(), 1, PQC3plan);
// Launch the viewer
igl::viewer::Viewer viewer;
key_down(viewer,'2',0);
viewer.data.invert_normals = true;
viewer.data.show_lines = false;
viewer.callback_key_down = &key_down;
viewer.launch();
}
void PixelMapper::mergeProjections(Eigen::MatrixXf& depthImage, Eigen::MatrixXi& indexImage,
Eigen::MatrixXf* depths, Eigen::MatrixXi* indices, int numImages){
assert (numImages>0);
int rows=depths[0].rows();
int cols=depths[0].cols();
depthImage.resize(indexImage.rows(), indexImage.cols());
depthImage.fill(std::numeric_limits<float>::max());
indexImage.resize(rows, cols);
indexImage.fill(-1);
#pragma omp parallel for
for (int c=0; c<cols; c++){
int* destIndexPtr = &indexImage.coeffRef(0,c);
float* destDepthPtr = &depthImage.coeffRef(0,c);
int* srcIndexPtr[numImages];
float* srcDepthPtr[numImages];
for (int i=0; i<numImages; i++){
srcIndexPtr[i] = &indices[i].coeffRef(0,c);
srcDepthPtr[i] = &depths[i].coeffRef(0,c);
}
for (int r=0; r<rows; r++){
for (int i=0; i<numImages; i++){
if (*destDepthPtr>*srcDepthPtr[i]){
*destDepthPtr = *srcDepthPtr[i];
*destIndexPtr = *srcIndexPtr[i];
}
srcDepthPtr[i]++;
srcIndexPtr[i]++;
}
destDepthPtr++;
destIndexPtr++;
}
}
}
int main(int argc, char *argv[])
{
using namespace Eigen;
using namespace std;
// Create the boundary of a square
V.resize(8,2);
E.resize(8,2);
H.resize(1,2);
V << -1,-1, 1,-1, 1,1, -1, 1,
-2,-2, 2,-2, 2,2, -2, 2;
E << 0,1, 1,2, 2,3, 3,0,
4,5, 5,6, 6,7, 7,4;
H << 0,0;
// Triangulate the interior
igl::triangle::triangulate(V,E,H,"a0.005q",V2,F2);
// Plot the generated mesh
igl::viewer::Viewer viewer;
viewer.data.set_mesh(V2,F2);
viewer.launch();
}
//=============================================================================
int readMatrixXi(Eigen::MatrixXi &_matrix, const char* _filename)
{
std::ifstream ifs(_filename);
int rows;
ifs >> rows;
int cols;
ifs >> cols;
if (rows < 1 || cols < 1)
{
std::cout << "Invalid matrix size: (" << rows << ", " << cols << ")."
<< std::endl;
return -1;
}
_matrix.resize(rows, cols);
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++)
{
ifs >> _matrix(i, j);
}
}
return 0;
}
// Parse right hand side arguments for a matlab mex function.
//
// Inputs:
// nrhs number of right hand side arguments
// prhs pointer to right hand side arguments
// Outputs:
// V n by dim list of mesh vertex positions
// F m by dim list of mesh face indices
// s 1 by dim bone source vertex position
// d 1 by dim bone dest vertex position
// "Throws" matlab errors if dimensions are not sane.
void parse_rhs(
const int nrhs,
const mxArray *prhs[],
Eigen::MatrixXd & V,
Eigen::MatrixXi & F,
Eigen::VectorXd & s,
Eigen::VectorXd & d)
{
using namespace std;
if(nrhs < 4)
{
mexErrMsgTxt("nrhs < 4");
}
const int dim = mxGetN(prhs[0]);
if(dim != 3)
{
mexErrMsgTxt("Mesh vertex list must be #V by 3 list of vertex positions");
}
if(dim != (int)mxGetN(prhs[1]))
{
mexErrMsgTxt("Mesh facet size must equal dimension");
}
if(dim != (int)mxGetN(prhs[2]))
{
mexErrMsgTxt("Source dim must equal vertex dimension");
}
if(dim != (int)mxGetN(prhs[3]))
{
mexErrMsgTxt("Dest dim must equal vertex dimension");
}
// set number of mesh vertices
const int n = mxGetM(prhs[0]);
// set vertex position pointers
double * Vp = mxGetPr(prhs[0]);
// set number of faces
const int m = mxGetM(prhs[1]);
// set face index list pointer
double * Fp = mxGetPr(prhs[1]);
// set source and dest pointers
double * sp = mxGetPr(prhs[2]);
double * dp = mxGetPr(prhs[3]);
// resize output to transpose
V.resize(n,dim);
copy(Vp,Vp+n*dim,V.data());
// resize output to transpose
F.resize(m,dim);
// Q: Is this doing a cast?
// A: Yes.
copy(Fp,Fp+m*dim,F.data());
// http://stackoverflow.com/a/4461466/148668
transform(F.data(),F.data()+m*dim,F.data(),
bind2nd(std::plus<double>(),-1.0));
// resize output to transpose
s.resize(dim);
copy(sp,sp+dim,s.data());
d.resize(dim);
copy(dp,dp+dim,d.data());
}
IGL_INLINE void igl::exterior_edges(
const Eigen::MatrixXi & F,
Eigen::MatrixXi & E)
{
using namespace Eigen;
using namespace std;
assert(F.cols() == 3);
const size_t m = F.rows();
MatrixXi all_E,sall_E,sort_order;
// Sort each edge by index
all_edges(F,all_E);
sort(all_E,2,true,sall_E,sort_order);
// Find unique edges
MatrixXi uE;
VectorXi IA,EMAP;
unique_rows(sall_E,uE,IA,EMAP);
VectorXi counts = VectorXi::Zero(uE.rows());
for(size_t a = 0;a<3*m;a++)
{
counts(EMAP(a)) += (sort_order(a)==0?1:-1);
}
E.resize(all_E.rows(),2);
{
int e = 0;
const size_t nue = uE.rows();
// Append each unique edge with a non-zero amount of signed occurances
for(size_t ue = 0; ue<nue; ue++)
{
const int count = counts(ue);
size_t i,j;
if(count == 0)
{
continue;
}else if(count < 0)
{
i = uE(ue,1);
j = uE(ue,0);
}else if(count > 0)
{
i = uE(ue,0);
j = uE(ue,1);
}
// Append edge for every repeated entry
const int abs_count = abs(count);
for(size_t k = 0;k<abs_count;k++)
{
E(e,0) = i;
E(e,1) = j;
e++;
}
}
E.conservativeResize(e,2);
}
}
// construct
WorldParamsPrior(const std::vector<distrib::MultiGaussian>& ctrlpts_, const std::vector<Eigen::MatrixXi>& ctrlptMasks_,
const std::vector<Eigen::MatrixXd>& ctrlptMins_, const std::vector<Eigen::MatrixXd>& ctrlptMaxs_,
const Eigen::VectorXd& ctrlptCoupledSds_, const Eigen::VectorXd& ctrlptUncoupledSds_,
const std::vector<distrib::MultiGaussian>& properties_, const std::vector<Eigen::VectorXi>& propMasks_,
const std::vector<Eigen::VectorXd>& propMins_, const std::vector<Eigen::VectorXd>& propMaxs_,
const std::vector<BoundaryClass>& classes_)
: ctrlptMasks(ctrlptMasks_),
ctrlptMins(ctrlptMins_),
ctrlptMaxs(ctrlptMaxs_),
ctrlptCoupledSds(ctrlptCoupledSds_),
ctrlptUncoupledSds(ctrlptUncoupledSds_),
ctrlptPrior(ctrlpts_),
propMasks(propMasks_),
propMins(propMins_),
propMaxs(propMaxs_),
propertyPrior(properties_),
classes(classes_)
{
for (uint l = 0; l < propMasks.size(); l++)
{
for (uint p = 0; p < propMasks_[l].size(); p++)
{
if (!propMasks_[l](p))
{
propertyPrior[l].sigma.row(p).setZero();
propertyPrior[l].sigma.col(p).setZero();
propertyPrior[l].sigma(p, p) = 1;
}
}
}
for (uint l = 0; l < ctrlptMasks_.size(); l++)
{
Eigen::MatrixXi masks = ctrlptMasks_[l];
masks.resize(masks.rows() * masks.cols(), 1);
for (uint p = 0; p < masks.rows(); p++)
{
if (!masks(p))
{
ctrlptPrior[l].sigma.row(p).setZero();
ctrlptPrior[l].sigma.col(p).setZero();
ctrlptPrior[l].sigma(p, p) = 1;
}
}
}
WorldParams minParams;
WorldParams maxParams;
minParams.rockProperties = propMins;
maxParams.rockProperties = propMaxs;
minParams.controlPoints = ctrlptMins;
maxParams.controlPoints = ctrlptMaxs;
thetaMin = deconstruct(minParams);
thetaMax = deconstruct(maxParams);
VLOG(1) << "Theta min:" << thetaMin.transpose();
VLOG(1) << "Theta max:" << thetaMax.transpose();
}
void parse_rhs(
const int nrhs,
const mxArray *prhs[],
Eigen::MatrixXd & V,
Eigen::MatrixXi & F,
Eigen::MatrixXd & P,
Eigen::MatrixXd & N,
int & num_samples)
{
using namespace std;
if(nrhs < 5)
{
mexErrMsgTxt("nrhs < 5");
}
const int dim = mxGetN(prhs[0]);
if(dim != 3)
{
mexErrMsgTxt("Mesh vertex list must be #V by 3 list of vertex positions");
}
if(dim != (int)mxGetN(prhs[1]))
{
mexErrMsgTxt("Mesh facet size must be 3");
}
if(mxGetN(prhs[2]) != dim)
{
mexErrMsgTxt("Point list must be #P by 3 list of origin locations");
}
if(mxGetN(prhs[3]) != dim)
{
mexErrMsgTxt("Normal list must be #P by 3 list of origin normals");
}
if(mxGetN(prhs[4]) != 1 || mxGetM(prhs[4]) != 1)
{
mexErrMsgTxt("Number of samples must be scalar.");
}
V.resize(mxGetM(prhs[0]),mxGetN(prhs[0]));
copy(mxGetPr(prhs[0]),mxGetPr(prhs[0])+V.size(),V.data());
F.resize(mxGetM(prhs[1]),mxGetN(prhs[1]));
copy(mxGetPr(prhs[1]),mxGetPr(prhs[1])+F.size(),F.data());
F.array() -= 1;
P.resize(mxGetM(prhs[2]),mxGetN(prhs[2]));
copy(mxGetPr(prhs[2]),mxGetPr(prhs[2])+P.size(),P.data());
N.resize(mxGetM(prhs[3]),mxGetN(prhs[3]));
copy(mxGetPr(prhs[3]),mxGetPr(prhs[3])+N.size(),N.data());
if(*mxGetPr(prhs[4]) != (int)*mxGetPr(prhs[4]))
{
mexErrMsgTxt("Number of samples should be non negative integer.");
}
num_samples = (int) *mxGetPr(prhs[4]);
}
void PointProjector::projectIntervals(Eigen::MatrixXi &intervalImage,
const Eigen::MatrixXf &depthImage,
const float worldRadius) const{
intervalImage.resize(depthImage.rows(), depthImage.cols());
int cpix=0;
for (int c=0; c<depthImage.cols(); c++){
const float* f = &depthImage(0,c);
int* i =&intervalImage(0,c);
for (int r=0; r<depthImage.rows(); r++, f++, i++){
*i=projectInterval(r,c,*f, worldRadius);
cpix++;
}
}
}
IGL_INLINE void igl::copyleft::cgal::polyhedron_to_mesh(
const Polyhedron & poly,
Eigen::MatrixXd & V,
Eigen::MatrixXi & F)
{
using namespace std;
V.resize(poly.size_of_vertices(),3);
F.resize(poly.size_of_facets(),3);
typedef typename Polyhedron::Vertex_const_iterator Vertex_iterator;
std::map<Vertex_iterator,size_t> vertex_to_index;
{
size_t v = 0;
for(
typename Polyhedron::Vertex_const_iterator p = poly.vertices_begin();
p != poly.vertices_end();
p++)
{
V(v,0) = p->point().x();
V(v,1) = p->point().y();
V(v,2) = p->point().z();
vertex_to_index[p] = v;
v++;
}
}
{
size_t f = 0;
for(
typename Polyhedron::Facet_const_iterator facet = poly.facets_begin();
facet != poly.facets_end();
++facet)
{
typename Polyhedron::Halfedge_around_facet_const_circulator he =
facet->facet_begin();
// Facets in polyhedral surfaces are at least triangles.
assert(CGAL::circulator_size(he) == 3 && "Facets should be triangles");
size_t c = 0;
do {
//// This is stooopidly slow
// F(f,c) = std::distance(poly.vertices_begin(), he->vertex());
F(f,c) = vertex_to_index[he->vertex()];
c++;
} while ( ++he != facet->facet_begin());
f++;
}
}
}
/**
* @brief Searches in the graph closest points to origin and target
*
* @param origin ...
* @param target ...
* @param originVertex to return selected vertex
* @param targetVertex ...
* @return void
*/
void PlannerPRM::searchClosestPoints(const QVec& origin, const QVec& target, Vertex& originVertex, Vertex& targetVertex)
{
qDebug() << __FUNCTION__ << "Searching from " << origin << "and " << target;
//prepare the query
Eigen::MatrixXi indices;
Eigen::MatrixXf distsTo;
Eigen::MatrixXf query(3,2);
indices.resize(1, query.cols());
distsTo.resize(1, query.cols());
query(0,0) = origin.x();query(1,0) = origin.y();query(2,0) = origin.z();
query(0,1) = target.x();query(1,1) = target.y();query(2,1) = target.z();
nabo->knn(query, indices, distsTo, 1);
originVertex = vertexMap.value(indices(0,0));
targetVertex = vertexMap.value(indices(0,1));
qDebug() << __FUNCTION__ << "Closest point to origin is at" << data(0,indices(0,0)) << data(1,indices(0,0)) << data(2,indices(0,0)) << " and corresponds to " << graph[originVertex].pose;
qDebug() << __FUNCTION__ << "Closest point to target is at" << data(0,indices(0,1)) << data(1,indices(0,1)) << data(2,indices(0,1)) << " and corresponds to " << graph[targetVertex].pose;
}
IGL_INLINE void igl::triangle_fan(
const Eigen::MatrixXi & E,
Eigen::MatrixXi & cap)
{
using namespace std;
using namespace Eigen;
// Handle lame base case
if(E.size() == 0)
{
cap.resize(0,E.cols()+1);
return;
}
// "Triangulate" aka "close" the E trivially with facets
// Note: in 2D we need to know if E endpoints are incoming or
// outgoing (left or right). Thus this will not work.
assert(E.cols() == 2);
// Arbitrary starting vertex
//int s = E(int(((double)rand() / RAND_MAX)*E.rows()),0);
int s = E(rand()%E.rows(),0);
vector<vector<int> > lcap;
for(int i = 0;i<E.rows();i++)
{
// Skip edges incident on s (they would be zero-area)
if(E(i,0) == s || E(i,1) == s)
{
continue;
}
vector<int> e(3);
e[0] = s;
e[1] = E(i,0);
e[2] = E(i,1);
lcap.push_back(e);
}
list_to_matrix(lcap,cap);
}
void PointProjector::unProject(HomogeneousPoint3fVector &points,
Eigen::MatrixXi &indexImage,
const Eigen::MatrixXf &depthImage) const {
points.resize(depthImage.rows()*depthImage.cols());
int count = 0;
indexImage.resize(depthImage.rows(), depthImage.cols());
HomogeneousPoint3f* point = &points[0];
int cpix=0;
for (int c=0; c<depthImage.cols(); c++){
const float* f = &depthImage(0,c);
int* i =&indexImage(0,c);
for (int r=0; r<depthImage.rows(); r++, f++, i++){
if (!unProject(*point, r,c,*f)){
*i=-1;
continue;
}
point++;
cpix++;
*i=count;
count++;
}
}
points.resize(count);
}
void igl::collapse_small_triangles(
const Eigen::MatrixXd & V,
const Eigen::MatrixXi & F,
const double eps,
Eigen::MatrixXi & FF)
{
using namespace Eigen;
using namespace std;
// Compute bounding box diagonal length
double bbd = bounding_box_diagonal(V);
MatrixXd l;
edge_lengths(V,F,l);
VectorXd dblA;
doublearea(l,dblA);
// Minimum area tolerance
const double min_dblarea = 2.0*eps*bbd*bbd;
Eigen::VectorXi FIM = colon<int>(0,V.rows()-1);
int num_edge_collapses = 0;
// Loop over triangles
for(int f = 0;f<F.rows();f++)
{
if(dblA(f) < min_dblarea)
{
double minl = 0;
int minli = -1;
// Find shortest edge
for(int e = 0;e<3;e++)
{
if(minli==-1 || l(f,e)<minl)
{
minli = e;
minl = l(f,e);
}
}
double maxl = 0;
int maxli = -1;
// Find longest edge
for(int e = 0;e<3;e++)
{
if(maxli==-1 || l(f,e)>maxl)
{
maxli = e;
maxl = l(f,e);
}
}
// Be sure that min and max aren't the same
maxli = (minli==maxli?(minli+1)%3:maxli);
// Collapse min edge maintaining max edge: i-->j
// Q: Why this direction?
int i = maxli;
int j = ((minli+1)%3 == maxli ? (minli+2)%3: (minli+1)%3);
assert(i != minli);
assert(j != minli);
assert(i != j);
FIM(F(f,i)) = FIM(F(f,j));
num_edge_collapses++;
}
}
// Reindex faces
MatrixXi rF = F;
// Loop over triangles
for(int f = 0;f<rF.rows();f++)
{
for(int i = 0;i<rF.cols();i++)
{
rF(f,i) = FIM(rF(f,i));
}
}
FF.resize(rF.rows(),rF.cols());
int num_face_collapses=0;
// Only keep uncollapsed faces
{
int ff = 0;
// Loop over triangles
for(int f = 0;f<rF.rows();f++)
{
bool collapsed = false;
// Check if any indices are the same
for(int i = 0;i<rF.cols();i++)
{
for(int j = i+1;j<rF.cols();j++)
{
if(rF(f,i)==rF(f,j))
{
collapsed = true;
num_face_collapses++;
break;
}
}
}
if(!collapsed)
{
FF.row(ff++) = rF.row(f);
}
}
// Use conservative resize
FF.conservativeResize(ff,FF.cols());
}
//cout<<"num_edge_collapses: "<<num_edge_collapses<<endl;
//cout<<"num_face_collapses: "<<num_face_collapses<<endl;
if(num_edge_collapses == 0)
{
// There must have been a "collapsed edge" in the input
assert(num_face_collapses==0);
// Base case
return;
}
//// force base case
//return;
MatrixXi recFF = FF;
return collapse_small_triangles(V,recFF,eps,FF);
}
// A tet is organized in the following fashion:
//
// 0
//
// 3 (3 is in the background; 1 and 2 are in the foreground)
// 2 1
//
// So the faces (with counterclockwise normals) are:
// (0 1 3)
// (0 2 1)
// (3 2 0)
// (1 2 3)
//
//
// This method will perform three steps:
// 1. Add all faces, duplicating ones on the interior
// 2. Remove all duplicate verts (might have been caused during #1)
// 3. Remove all duplicate faces
void marching_tets(
const Eigen::MatrixXd& V,
const Eigen::MatrixXi& T,
const Eigen::VectorXd& H,
double offset,
Eigen::MatrixXd& NV,
Eigen::MatrixXi& NF,
Eigen::VectorXi& I)
{
min_how_much = 1;
max_how_much = 0;
using namespace Eigen;
using namespace std;
// Count the faces.
std::map<std::vector<int>, int> face_counts;
for (int i = 0; i < T.rows(); ++i) {
std::vector<std::vector<int> > fs;
fs.push_back({T(i, 0), T(i, 1), T(i, 3)});
fs.push_back({T(i, 0), T(i, 2), T(i, 1)});
fs.push_back({T(i, 3), T(i, 2), T(i, 0)});
fs.push_back({T(i, 1), T(i, 2), T(i, 3)});
for (auto &f : fs) {
std::sort(f.begin(), f.end());
// Add it to the map.
face_counts[f]++;
}
}
vector<Eigen::RowVector3i> faces;
vector<int> faces_markers;
vector<Eigen::RowVector3d> new_verts;
int times[6];
for (int i = 0; i < 6; i++) {
times[i] = 0;
}
// Create data structure.
MarchingTetsDat dd(V, H, faces, faces_markers, face_counts, new_verts, offset);
int numEq = 0;
// Check each tet face, add as needed.
for (int i = 0; i < T.rows(); ++i) {
// See if the tet is entirely inside.
vector<int> inside, outside, inside_t, outside_t, identical;
for (int j = 0; j < T.cols(); ++j) {
//if (H(T(i, j)) > offset + 1e-4) {
if (H(T(i, j)) > offset) {
outside.push_back(j);
} else if (H(T(i, j)) < offset) {
inside.push_back(j);
} else {
numEq++;
identical.push_back(j);
}
if (H(T(i, j)) == GLOBAL::outside_temp) {
outside_t.push_back(j);
} else if (H(T(i, j)) == GLOBAL::inside_temp) {
inside_t.push_back(j);
}
}
// Ignore this tet if it's entirely outside.
if (outside.size() == 4) {
continue;
}
if (outside.size() == 0 && inside.size() == 0) {
// degenerate, ignore.
printf("WARNING: degenerate tet face found!!\n");
} else if (inside.size() == 0 && identical.size() < 3) {
// Nothing to add.
} else if (identical.size() == 3) {
//addOrig(T.row(i), 7, dd.faces, dd.faces_markers);
// Ignore it if there's only one on the outside.
//if (inside.size() == 0) continue;
if (outside.size() == 0) continue;
times[1]++;
// Add just a single face (always)
int i1 = T(i,identical[0]), i2 = T(i,identical[1]), i3 = T(i,identical[2]);
Eigen::RowVector3i f({i1, i2, i3});
dd.faces.push_back(f);
dd.faces_markers.push_back(1);
} else if (outside.size() == 0) {
// (these are colored blue)
times[0]++;
// (A) Takes care of:
// inside: 1, identical: 3 (remove three duplicated faces later)
// inside: 2, identical: 2 (remove all four duplicated faces later)
// inside: 3, identical: 1 (remove all four duplicated faces later)
// inside: 4, identical: 0 (remove all four duplicated faces later)
case0Out(dd, T.row(i), inside, outside, identical, inside_t, outside_t);
} else if (inside.size() == 1) {
// (these are colored green)
times[2]++;
// (B) Takes care of:
// inside: 1 outside: 3
// inside: 1 outside: 2 identical: 1
// inside: 1 outside: 1 identical: 2
//
case1In(dd, T.row(i), inside, outside, identical, inside_t, outside_t);
} else if (inside.size() == 3 && outside.size() == 1) {
// (these are colored orange)
times[3]++;
// (C) takes care of:
// inside: 3 outside: 1
//
case3In1Out(dd, T.row(i), inside, outside, identical, inside_t, outside_t);
} else if (inside.size() == 2 && outside.size() >= 1) {
// (these are colored red)
times[4]++;
// (D) takes care of:
// inside: 2 outside: 1 identical: 1
// inside: 2 outside: 2 identical: 0
//
case2In2Out(dd, T.row(i), inside, outside, identical, inside_t, outside_t);
} else {
times[5]++;
fprintf(stderr, "WARN: marching tets found something weird, with in:%lu out:%lu\n",
inside.size(), outside.size());
}
}
printf("Finished marching tets with usages:\n");
for (int i = 0; i < 6; ++i) {
printf(" %d: %d\n", i, times[i]);
}
printf("how_much is %lf and EPS is %lf\n", min_how_much, GLOBAL::EPS);
printf(" max is %lf\n", max_how_much);
printf("Num equal is %d\n", numEq);
// Copy verts
NV.resize(V.rows() + new_verts.size(), 3);
for (int i = 0; i < V.rows(); ++i) {
NV.row(i) = V.row(i);
}
for (int i = 0; i < new_verts.size(); ++i) {
NV.row(i + V.rows()) = new_verts[i];
}
// Set I
I.resize(NV.rows());
for (int i = 0; i < I.rows(); ++i) {
if (i < V.rows()) {
I(i) = i;
} else {
I(i) = -1;
}
}
Eigen::VectorXi facesMarkers;
facesMarkers.resize(faces.size());
// Copy faces
NF.resize(faces.size(), 3);
for (int i = 0; i < faces.size(); ++i) {
NF.row(i) = faces[i];
facesMarkers(i) = faces_markers[i];
}
Eigen::MatrixXd newV;
Eigen::MatrixXi newF;
Eigen::VectorXi SVJ, SVI, I2;
// Helpers::viewTriMesh(NV, NF, facesMarkers);
//igl::writeOFF("offset_mesh.off", NV, NF)
Helpers::writeMeshWithMarkers("offset_mesh", NV, NF, facesMarkers);
/*
igl::collapse_small_triangles(NV, NF, 1e-8, newF);
printf("Collapsed %d small triangles\n", NF.rows() - newF.rows());
NF = newF;
*/
///*
igl::remove_duplicate_vertices(NV, NF, 1e-20, newV, SVI, SVJ, newF);
I2.resize(newV.rows());
I2.setConstant(-1);
for (int i = 0; i < NV.rows(); ++i) {
if (I2(SVJ(i)) == -1) {
I2(SVJ(i)) = I(i);
} else {
I2(SVJ(i)) = std::min(I2(SVJ(i)), I(i));
}
}
NF = newF;
NV = newV;
I = I2;
// Now see if we have duplicated faces.
//igl::resolve_duplicated_faces(NF, newF, SVJ);
//NF = newF;
//*/
// Other option is to do these two:
// These are bad because sometimes the "small" triangles are not area zero,
// and doing the removeDuplicates will delete these triangles and make the
// mesh non-manifold. Better to wait for remeshing later.
//Helpers::removeDuplicates(NV, NF, I);
//Helpers::collapseSmallTriangles(NV, NF);
igl::remove_unreferenced(NV, NF, newV, newF, SVI, SVJ);
I2.resize(newV.rows());
I2.setConstant(-1);
for (int i = 0; i < I2.rows(); ++i) {
I2(i) = I(SVJ(i));
}
I = I2;
NV = newV;
NF = newF;
// orient everything correctly.
Eigen::VectorXi C;
igl::orientable_patches(NF, C);
igl::bfs_orient(NF, newF, C);
NF = newF;
igl::orient_outward(NV, NF, C, newF, SVJ);
NF = newF;
//igl::writeOFF("offset_mesh_normals.off", NV, NF);
#ifdef DEBUG_MESH
if (!Helpers::isMeshOkay(NV, NF)) {
printf("Error: Mesh is not okay at first...\n");
}
if (!Helpers::isManifold(NV, NF, I)) {
printf("Error: Mesh from marching tets not manifold!\n");
Eigen::VectorXi temp;
temp.resize(I.rows());
temp.setZero();
Helpers::isManifold(NV, NF, temp, true);
Helpers::viewTriMesh(NV, NF, temp);
Helpers::writeMeshWithMarkers("marching_tets_manifold", NV, NF, temp);
cout << "See marching_tets_manifold.off for problems.\n";
exit(1);
}
#endif
}
IGL_INLINE bool igl::copyleft::boolean::mesh_boolean(
const Eigen::PlainObjectBase<DerivedVA> & VA,
const Eigen::PlainObjectBase<DerivedFA> & FA,
const Eigen::PlainObjectBase<DerivedVB> & VB,
const Eigen::PlainObjectBase<DerivedFB> & FB,
const WindingNumberOp& wind_num_op,
const KeepFunc& keep,
const ResolveFunc& resolve_fun,
Eigen::PlainObjectBase<DerivedVC > & VC,
Eigen::PlainObjectBase<DerivedFC > & FC,
Eigen::PlainObjectBase<DerivedJ > & J)
{
#ifdef MESH_BOOLEAN_TIMING
const auto & tictoc = []() -> double
{
static double t_start = igl::get_seconds();
double diff = igl::get_seconds()-t_start;
t_start += diff;
return diff;
};
const auto log_time = [&](const std::string& label) -> void {
std::cout << "mesh_boolean." << label << ": "
<< tictoc() << std::endl;
};
tictoc();
#endif
typedef typename DerivedVC::Scalar Scalar;
//typedef typename DerivedFC::Scalar Index;
typedef CGAL::Epeck Kernel;
typedef Kernel::FT ExactScalar;
typedef Eigen::Matrix<Scalar,Eigen::Dynamic,3> MatrixX3S;
//typedef Eigen::Matrix<Index,Eigen::Dynamic,Eigen::Dynamic> MatrixXI;
typedef Eigen::Matrix<typename DerivedJ::Scalar,Eigen::Dynamic,1> VectorXJ;
// Generate combined mesh.
typedef Eigen::Matrix<
ExactScalar,
Eigen::Dynamic,
Eigen::Dynamic,
DerivedVC::IsRowMajor> MatrixXES;
MatrixXES V;
DerivedFC F;
VectorXJ CJ;
{
DerivedVA VV(VA.rows() + VB.rows(), 3);
DerivedFC FF(FA.rows() + FB.rows(), 3);
VV << VA, VB;
FF << FA, FB.array() + VA.rows();
//// Handle annoying empty cases
//if(VA.size()>0)
//{
// VV<<VA;
//}
//if(VB.size()>0)
//{
// VV<<VB;
//}
//if(FA.size()>0)
//{
// FF<<FA;
//}
//if(FB.size()>0)
//{
// FF<<FB.array()+VA.rows();
//}
resolve_fun(VV, FF, V, F, CJ);
}
#ifdef MESH_BOOLEAN_TIMING
log_time("resolve_self_intersection");
#endif
// Compute winding numbers on each side of each facet.
const size_t num_faces = F.rows();
Eigen::MatrixXi W;
Eigen::VectorXi labels(num_faces);
std::transform(CJ.data(), CJ.data()+CJ.size(), labels.data(),
[&](int i) { return i<FA.rows() ? 0:1; });
bool valid = true;
if (num_faces > 0)
{
valid = valid &
igl::copyleft::cgal::propagate_winding_numbers(V, F, labels, W);
} else
{
W.resize(0, 4);
}
assert((size_t)W.rows() == num_faces);
if (W.cols() == 2)
{
assert(FB.rows() == 0);
Eigen::MatrixXi W_tmp(num_faces, 4);
W_tmp << W, Eigen::MatrixXi::Zero(num_faces, 2);
W = W_tmp;
} else {
assert(W.cols() == 4);
}
#ifdef MESH_BOOLEAN_TIMING
log_time("propagate_input_winding_number");
#endif
// Compute resulting winding number.
Eigen::MatrixXi Wr(num_faces, 2);
for (size_t i=0; i<num_faces; i++)
{
Eigen::MatrixXi w_out(1,2), w_in(1,2);
w_out << W(i,0), W(i,2);
w_in << W(i,1), W(i,3);
Wr(i,0) = wind_num_op(w_out);
Wr(i,1) = wind_num_op(w_in);
}
#ifdef MESH_BOOLEAN_TIMING
log_time("compute_output_winding_number");
#endif
// Extract boundary separating inside from outside.
auto index_to_signed_index = [&](size_t i, bool ori) -> int
{
return (i+1)*(ori?1:-1);
};
//auto signed_index_to_index = [&](int i) -> size_t {
// return abs(i) - 1;
//};
std::vector<int> selected;
for(size_t i=0; i<num_faces; i++)
{
auto should_keep = keep(Wr(i,0), Wr(i,1));
if (should_keep > 0)
{
selected.push_back(index_to_signed_index(i, true));
} else if (should_keep < 0)
{
selected.push_back(index_to_signed_index(i, false));
}
}
const size_t num_selected = selected.size();
DerivedFC kept_faces(num_selected, 3);
DerivedJ kept_face_indices(num_selected, 1);
for (size_t i=0; i<num_selected; i++)
{
size_t idx = abs(selected[i]) - 1;
if (selected[i] > 0)
{
kept_faces.row(i) = F.row(idx);
} else
{
kept_faces.row(i) = F.row(idx).reverse();
}
kept_face_indices(i, 0) = CJ[idx];
}
#ifdef MESH_BOOLEAN_TIMING
log_time("extract_output");
#endif
// Finally, remove duplicated faces and unreferenced vertices.
{
DerivedFC G;
DerivedJ JJ;
igl::resolve_duplicated_faces(kept_faces, G, JJ);
igl::slice(kept_face_indices, JJ, 1, J);
#ifdef DOUBLE_CHECK_EXACT_OUTPUT
{
// Sanity check on exact output.
igl::copyleft::cgal::RemeshSelfIntersectionsParam params;
params.detect_only = true;
params.first_only = true;
MatrixXES dummy_VV;
DerivedFC dummy_FF, dummy_IF;
Eigen::VectorXi dummy_J, dummy_IM;
igl::copyleft::cgal::SelfIntersectMesh<
Kernel,
MatrixXES, DerivedFC,
MatrixXES, DerivedFC,
DerivedFC,
Eigen::VectorXi,
Eigen::VectorXi
> checker(V, G, params,
dummy_VV, dummy_FF, dummy_IF, dummy_J, dummy_IM);
if (checker.count != 0)
{
throw "Self-intersection not fully resolved.";
}
}
#endif
MatrixX3S Vs(V.rows(), V.cols());
for (size_t i=0; i<(size_t)V.rows(); i++)
{
for (size_t j=0; j<(size_t)V.cols(); j++)
{
igl::copyleft::cgal::assign_scalar(V(i,j), Vs(i,j));
}
}
Eigen::VectorXi newIM;
igl::remove_unreferenced(Vs,G,VC,FC,newIM);
}
#ifdef MESH_BOOLEAN_TIMING
log_time("clean_up");
#endif
return valid;
}
IGL_INLINE void igl::triangle::triangulate(
const Eigen::MatrixXd& V,
const Eigen::MatrixXi& E,
const Eigen::MatrixXd& H,
const std::string flags,
Eigen::MatrixXd& V2,
Eigen::MatrixXi& F2)
{
using namespace std;
using namespace Eigen;
// Prepare the flags
string full_flags = flags + "pzB";
// Prepare the input struct
triangulateio in;
assert(V.cols() == 2);
in.numberofpoints = V.rows();
in.pointlist = (double*)calloc(V.rows()*2,sizeof(double));
for (unsigned i=0;i<V.rows();++i)
for (unsigned j=0;j<2;++j)
in.pointlist[i*2+j] = V(i,j);
in.numberofpointattributes = 0;
in.pointmarkerlist = (int*)calloc(V.rows(),sizeof(int));
for (unsigned i=0;i<V.rows();++i)
in.pointmarkerlist[i] = 1;
in.trianglelist = NULL;
in.numberoftriangles = 0;
in.numberofcorners = 0;
in.numberoftriangleattributes = 0;
in.triangleattributelist = NULL;
in.numberofsegments = E.rows();
in.segmentlist = (int*)calloc(E.rows()*2,sizeof(int));
for (unsigned i=0;i<E.rows();++i)
for (unsigned j=0;j<2;++j)
in.segmentlist[i*2+j] = E(i,j);
in.segmentmarkerlist = (int*)calloc(E.rows(),sizeof(int));
for (unsigned i=0;i<E.rows();++i)
in.segmentmarkerlist[i] = 1;
in.numberofholes = H.rows();
in.holelist = (double*)calloc(H.rows()*2,sizeof(double));
for (unsigned i=0;i<H.rows();++i)
for (unsigned j=0;j<2;++j)
in.holelist[i*2+j] = H(i,j);
in.numberofregions = 0;
// Prepare the output struct
triangulateio out;
out.pointlist = NULL;
out.trianglelist = NULL;
out.segmentlist = NULL;
// Call triangle
::triangulate(const_cast<char*>(full_flags.c_str()), &in, &out, 0);
// Return the mesh
V2.resize(out.numberofpoints,2);
for (unsigned i=0;i<V2.rows();++i)
for (unsigned j=0;j<2;++j)
V2(i,j) = out.pointlist[i*2+j];
F2.resize(out.numberoftriangles,3);
for (unsigned i=0;i<F2.rows();++i)
for (unsigned j=0;j<3;++j)
F2(i,j) = out.trianglelist[i*3+j];
// Cleanup in
free(in.pointlist);
free(in.pointmarkerlist);
free(in.segmentlist);
free(in.segmentmarkerlist);
free(in.holelist);
// Cleanup out
free(out.pointlist);
free(out.trianglelist);
free(out.segmentlist);
}
void igl::polyvector_field_one_ring_matchings(const Eigen::PlainObjectBase<DerivedV> &V,
const Eigen::PlainObjectBase<DerivedF> &F,
const std::vector<std::vector<VFType> >& VF,
const Eigen::MatrixXi& E2F,
const Eigen::MatrixXi& F2E,
const Eigen::PlainObjectBase<DerivedTT>& TT,
const Eigen::PlainObjectBase<DerivedM> &match_ab,
const Eigen::PlainObjectBase<DerivedM> &match_ba,
const int vi,
Eigen::MatrixXi &mvi,
Eigen::VectorXi &fi)
{
int half_degree = match_ab.cols();
mvi.resize(VF[vi].size()+1,half_degree);
fi.resize(VF[vi].size()+1,1);
//start from one face
//first, check if the vertex is on a boundary
//then there must be two faces that are on the boundary
//(other cases not supported)
int fstart = -1;
int ind = 0;
for (int i =0; i<VF[vi].size(); ++i)
{
int fi = VF[vi][i];
for (int j=0; j<3; ++j)
if (F(fi,j)==vi && TT(fi,j) == -1)
{
ind ++;
fstart = fi;
// break;
}
}
if (ind >1 )
{
std::cerr<<"igl::polyvector_field_one_ring_matchings -- vertex "<<vi<< " is on an unusual boundary"<<std::endl;
exit(1);
}
if (fstart == -1)
fstart = VF[vi][0];
int current_face = fstart;
int i =0;
fi[i] = current_face;
for (int j=0; j<half_degree; ++j)
mvi(i,j) = j;
int next_face = -1;
while (next_face != fstart && current_face!=-1)
{
// look for the vertex
int j=-1;
for (unsigned z=0; z<3; ++z)
if (F(current_face,(z+1)%3) == vi)
{
j=z;
break;
}
assert(j!=-1);
next_face = TT(current_face, j);
++i;
if (next_face == -1)
mvi.row(i).setConstant(-1);
else
{
// look at the edge between the two faces
const int ¤t_edge = F2E(current_face,j);
for (int k=0; k<half_degree; ++k)
{
// check its orientation to determine whether match_ab or match_ba should be used
if ((E2F(current_edge,0) == current_face) &&
(E2F(current_edge,1) == next_face) )
{
//look at match_ab
mvi(i,k) = match_ab(current_edge,(mvi(i-1,k))%half_degree);
}
else
{
assert((E2F(current_edge,1) == current_face) &&
(E2F(current_edge,0) == next_face));
//look at match_ba
mvi(i,k) = match_ba(current_edge,(mvi(i-1,k))%half_degree);
}
if (mvi(i-1,k)>=half_degree)
mvi(i,k) = (mvi(i,k)+half_degree)%(2*half_degree);
}
}
current_face = next_face;
fi[i] = current_face;
}
}
