void processCoordinates() {
const Index nCoord = m_coord->getNumCoords();
m_vertexMap.resize(nCoord);
auto vertexMap = m_vertexMap.data();
#pragma omp parallel for
for (ssize_t i=0; i<nCoord; ++i) {
const Vector p(x[i], y[i], z[i]);
vertexMap[i] = m_decider(i) > 0 ? 1 : 0;
}
if (haveCornerList) {
Index numIn = 0;
for (Index i=0; i<nCoord; ++i) {
if (vertexMap[i]) {
numIn += vertexMap[i];
vertexMap[i] = numIn;
}
}
m_outCoords->setSize(numIn);
out_x = m_outCoords->x().data();
out_y = m_outCoords->y().data();
out_z = m_outCoords->z().data();
#pragma omp parallel for schedule(dynamic)
for (ssize_t i=0; i<nCoord; ++i) {
Index idx = vertexMap[i];
vassert(idx >= 0);
if (idx > 0) {
--idx;
vassert(idx < numIn);
out_x[idx] = x[i];
out_y[idx] = y[i];
out_z[idx] = z[i];
}
}
}
}
Object::ptr ReadModel::load(const std::string &name) {
Object::ptr ret;
Assimp::Importer importer;
bool indexed = false;
unsigned int readFlags = aiProcess_PreTransformVertices|aiProcess_SortByPType|aiProcess_ImproveCacheLocality|aiProcess_OptimizeGraph|aiProcess_OptimizeMeshes;
if (getIntParameter("indexed_geometry")) {
readFlags |= aiProcess_JoinIdenticalVertices;
indexed = true;
}
if (getIntParameter("triangulate"))
readFlags |= aiProcess_Triangulate;
const aiScene* scene = importer.ReadFile(name, readFlags);
if (!scene) {
if (!getIntParameter("ignore_errors")) {
std::stringstream str;
str << "failed to read " << name << ": " << importer.GetErrorString() << std::endl;
std::string s = str.str();
sendError("%s", s.c_str());
}
return ret;
}
for (unsigned int m=0; m<scene->mNumMeshes; ++m) {
const aiMesh *mesh = scene->mMeshes[m];
if (mesh->HasPositions()) {
Coords::ptr coords;
if (mesh->HasFaces()) {
auto numVert = mesh->mNumVertices;
auto numFace = mesh->mNumFaces;
if (mesh->mPrimitiveTypes & aiPrimitiveType_POLYGON) {
Index numIndex = 0;
for (unsigned int f=0; f<numFace; ++f) {
numIndex += mesh->mFaces[f].mNumIndices;
}
Polygons::ptr poly(new Polygons(numFace, numIndex, numVert));
coords = poly;
auto *el = &poly->el()[0];
auto *cl = indexed ? &poly->cl()[0] : nullptr;
Index idx=0, vertCount=0;
for (unsigned int f=0; f<numFace; ++f) {
el[idx++] = vertCount;
if (indexed) {
const auto &face = mesh->mFaces[f];
for (unsigned int i=0; i<face.mNumIndices; ++i) {
cl[vertCount++] = face.mIndices[i];
}
}
}
el[idx] = vertCount;
} else if (mesh->mPrimitiveTypes & aiPrimitiveType_TRIANGLE) {
Index numIndex = indexed ? mesh->mNumFaces*3 : 0;
Triangles::ptr tri(new Triangles(numIndex, numVert));
coords = tri;
if (indexed) {
auto *cl = &tri->cl()[0];
Index vertCount=0;
for (unsigned int f=0; f<numFace; ++f) {
const auto &face = mesh->mFaces[f];
vassert(face.mNumIndices == 3);
for (unsigned int i=0; i<face.mNumIndices; ++i) {
cl[vertCount++] = face.mIndices[i];
}
}
}
}
} else {
Points::ptr points(new Points(mesh->mNumVertices));
coords = points;
}
if (coords) {
Scalar *x[3] = { nullptr, nullptr, nullptr };
for (int c=0; c<3; ++c) {
x[c] = &coords->x(c)[0];
}
for (Index i=0; i<mesh->mNumVertices; ++i) {
const auto &vert = mesh->mVertices[i];
for (unsigned int c=0; c<3; ++c) {
x[c][i] = vert[c];
}
}
ret = coords;
if (mesh->HasNormals()) {
Normals::ptr normals(new Normals(mesh->mNumVertices));
Scalar *n[3] = { nullptr, nullptr, nullptr };
for (int c=0; c<3; ++c) {
n[c] = &normals->x(c)[0];
}
for (Index i=0; i<mesh->mNumVertices; ++i) {
const auto &norm = mesh->mNormals[i];
for (unsigned int c=0; c<3; ++c) {
n[c][i] = norm[c];
}
}
coords->setNormals(normals);
}
}
}
break;
}
if (scene->mNumMeshes > 1) {
sendInfo("file %s contains %d meshes, all but the first have been ignored", name.c_str(), scene->mNumMeshes);
}
return ret;
}
bool process() {
processCoordinates();
Index numCoordsIn = m_outCoords->getNumCoords();
if (m_tri) {
const Index numElem = haveCornerList ? m_tri->getNumCorners()/3 : m_tri->getNumCoords()/3;
std::vector<Index> outIdxCorner(numElem+1), outIdxCoord(numElem+1);
outIdxCorner[0] = 0;
outIdxCoord[0] = numCoordsIn;
#pragma omp parallel for schedule (dynamic)
for (ssize_t elem=0; elem<numElem; ++elem) {
Index numCorner=0, numCoord=0;
processTriangle(elem, numCorner, numCoord, true);
outIdxCorner[elem+1] = numCorner;
outIdxCoord[elem+1] = numCoord;
}
for (Index elem=0; elem<numElem; ++elem) {
outIdxCoord[elem+1] += outIdxCoord[elem];
outIdxCorner[elem+1] += outIdxCorner[elem];
}
Index numCoord = outIdxCoord[numElem];
Index numCorner = outIdxCorner[numElem];
if (haveCornerList) {
m_outTri->cl().resize(numCorner);
out_cl = m_outTri->cl().data();
}
m_outTri->setSize(numCoord);
out_x = m_outTri->x().data();
out_y = m_outTri->y().data();
out_z = m_outTri->z().data();
if (m_outData) {
m_outData->x().resize(numCoord);
out_d = m_outData->x().data();
}
#pragma omp parallel for schedule (dynamic)
for (ssize_t elem = 0; elem<numElem; ++elem) {
processTriangle(elem, outIdxCorner[elem], outIdxCoord[elem], false);
}
//std::cerr << "CuttingSurface: << " << m_outData->x().size() << " vert, " << m_outData->x().size() << " data elements" << std::endl;
return true;
} else if (m_poly) {
const Index numElem = m_poly->getNumElements();
std::vector<Index> outIdxPoly(numElem+1), outIdxCorner(numElem+1), outIdxCoord(numElem+1);
outIdxPoly[0] = 0;
outIdxCorner[0] = 0;
outIdxCoord[0] = numCoordsIn;
#pragma omp parallel for schedule (dynamic)
for (ssize_t elem=0; elem<numElem; ++elem) {
Index numPoly=0, numCorner=0, numCoord=0;
processPolygon(elem, numPoly, numCorner, numCoord, true);
outIdxPoly[elem+1] = numPoly;
outIdxCorner[elem+1] = numCorner;
outIdxCoord[elem+1] = numCoord;
}
for (Index elem=0; elem<numElem; ++elem) {
outIdxPoly[elem+1] += outIdxPoly[elem];
outIdxCorner[elem+1] += outIdxCorner[elem];
outIdxCoord[elem+1] += outIdxCoord[elem];
}
Index numPoly = outIdxPoly[numElem];
Index numCorner = outIdxCorner[numElem];
Index numCoord = outIdxCoord[numElem];
m_outPoly->el().resize(numPoly+1);
out_el = m_outPoly->el().data();
out_el[numPoly] = numCorner;
m_outPoly->cl().resize(numCorner);
out_cl = m_outPoly->cl().data();
m_outPoly->setSize(numCoord);
out_x = m_outPoly->x().data();
out_y = m_outPoly->y().data();
out_z = m_outPoly->z().data();
if (m_outData) {
m_outData->x().resize(numCoord);
out_d = m_outData->x().data();
}
#pragma omp parallel for schedule (dynamic)
for (ssize_t elem = 0; elem<numElem; ++elem) {
processPolygon(elem, outIdxPoly[elem], outIdxCorner[elem], outIdxCoord[elem], false);
}
//std::cerr << "CuttingSurface: << " << m_outData->x().size() << " vert, " << m_outData->x().size() << " data elements" << std::endl;
return true;
}
return true;
}