std::shared_ptr<QgsMeshMemoryDatasetGroup> QgsMeshCalcUtils::create( const QString &datasetGroupName ) const
{
const auto dp = mMeshLayer->dataProvider();
std::shared_ptr<QgsMeshMemoryDatasetGroup> grp;
for ( int group_i = 0; group_i < dp->datasetGroupCount(); ++group_i )
{
const auto meta = dp->datasetGroupMetadata( group_i );
const QString name = meta.name();
if ( name == datasetGroupName )
{
grp = std::make_shared<QgsMeshMemoryDatasetGroup>();
grp->isScalar = meta.isScalar();
grp->type = meta.dataType();
grp->maximum = meta.maximum();
grp->minimum = meta.minimum();
grp->name = meta.name();
int count = ( meta.dataType() == QgsMeshDatasetGroupMetadata::DataOnFaces ) ? dp->faceCount() : dp->vertexCount();
for ( int dataset_i = 0; dataset_i < dp->datasetCount( group_i ); ++dataset_i )
{
const QgsMeshDatasetIndex index( group_i, dataset_i );
const auto dsMeta = dp->datasetMetadata( index );
std::shared_ptr<QgsMeshMemoryDataset> ds = create( grp->type );
ds->maximum = dsMeta.maximum();
ds->minimum = dsMeta.minimum();
ds->time = dsMeta.time();
ds->valid = dsMeta.isValid();
const QgsMeshDataBlock block = dp->datasetValues( index, 0, count );
Q_ASSERT( block.count() == count );
for ( int value_i = 0; value_i < count; ++value_i )
ds->values[value_i] = block.value( value_i );
const QgsMeshDataBlock active = dp->areFacesActive( index, 0, dp->faceCount() );
Q_ASSERT( active.count() == dp->faceCount() );
for ( int value_i = 0; value_i < dp->faceCount(); ++value_i )
ds->active[value_i] = active.active( value_i );
grp->addDataset( ds );
}
break;
}
}
return grp;
}
const BoundingBox APolygonalMesh::calculateBBox(unsigned icomponent) const
{
Vector3F * p = points();
unsigned * v = polygonIndices(icomponent);
const unsigned n = faceCount(icomponent);
BoundingBox box;
unsigned i = 0;
for(;i<n; i++) {
box.updateMin(p[v[i]]);
box.updateMax(p[v[i]]);
}
return box;
}
void PlyWriter::writeHeader(PointLayoutPtr layout) const
{
*m_stream << "ply" << std::endl;
*m_stream << "format " << m_format << " 1.0" << std::endl;
*m_stream << "comment Generated by PDAL" << std::endl;
*m_stream << "element vertex " << pointCount() << std::endl;
auto ni = m_dimNames.begin();
for (auto dim : m_dims)
{
std::string name = *ni++;
std::string typeString = getType(layout->dimType(dim));
*m_stream << "property " << typeString << " " << name << std::endl;
}
if (m_faces)
{
*m_stream << "element face " << faceCount() << std::endl;
*m_stream << "property list uint8 uint32 vertex_indices" << std::endl;
}
*m_stream << "end_header" << std::endl;
}
//--------------------------------------------------------------------------------------------------
/// Gets connectivity for one face in this primitive set
///
/// The indices array will be populated with the connectivities for the specified face.
/// The connectivity table will have 1, 2, 3 or 4 entries. If this primitive set consists
/// of a triangle fan, triangles will be returned. In a similar fashion, if the primitive set
/// consist of a quad strip, quads will be returned.
//--------------------------------------------------------------------------------------------------
void PrimitiveSet::getFaceIndices(size_t indexOfFace, UIntArray* indices) const
{
CVF_TIGHT_ASSERT(indexOfFace < faceCount());
CVF_TIGHT_ASSERT(indices);
indices->setSizeZero();
if (m_primitiveType == PT_POINTS)
{
indices->reserve(1);
indices->add(index(indexOfFace));
}
else if (m_primitiveType == PT_LINES)
{
indices->reserve(2);
indices->add(index(2*indexOfFace));
indices->add(index(2*indexOfFace + 1));
}
else if (m_primitiveType == PT_LINE_LOOP)
{
indices->reserve(2);
if (indexOfFace == faceCount() - 1)
{
indices->add(index(indexOfFace));
indices->add(index(0));
}
else
{
indices->add(index(indexOfFace));
indices->add(index(indexOfFace + 1));
}
}
else if (m_primitiveType == PT_LINE_STRIP)
{
indices->reserve(2);
indices->add(index(indexOfFace));
indices->add(index(indexOfFace + 1));
}
else if (m_primitiveType == PT_TRIANGLES)
{
indices->reserve(3);
const size_t baseIdx = 3*indexOfFace;
indices->add(index(baseIdx));
indices->add(index(baseIdx + 1));
indices->add(index(baseIdx + 2));
}
else if (m_primitiveType == PT_TRIANGLE_FAN)
{
indices->reserve(3);
indices->add(index(0));
indices->add(index(indexOfFace + 1));
indices->add(index(indexOfFace + 2));
}
else if (m_primitiveType == PT_TRIANGLE_STRIP)
{
indices->reserve(3);
if (indexOfFace % 2 == 0)
{
indices->add(index(indexOfFace));
indices->add(index(indexOfFace + 1));
indices->add(index(indexOfFace + 2));
}
else
{
indices->add(index(indexOfFace + 1));
indices->add(index(indexOfFace));
indices->add(index(indexOfFace + 2));
}
}
else
{
CVF_FAIL_MSG("Not implemented");
}
}
CSSFontFace& CSSFontFaceSet::operator[](size_t i)
{
ASSERT(i < faceCount());
return m_faces[i];
}