/// Load ascii version of the point cloud library PCD format
bool PointArray::loadPly(QString fileName, size_t maxPointCount,
std::vector<GeomField>& fields, V3d& offset,
size_t& npoints, uint64_t& totPoints,
Imath::Box3d& bbox, V3d& centroid)
{
std::unique_ptr<t_ply_, int(*)(p_ply)> ply(
ply_open(fileName.toUtf8().constData(), NULL, 0, NULL), ply_close);
if (!ply || !ply_read_header(ply.get()))
return false;
// Parse out header data
p_ply_element vertexElement = findVertexElement(ply.get(), npoints);
if (vertexElement)
{
if (!loadPlyVertexProperties(fileName, ply.get(), vertexElement, fields, offset, npoints))
return false;
}
else
{
if (!loadDisplazNativePly(fileName, ply.get(), fields, offset, npoints))
return false;
}
totPoints = npoints;
// Compute bounding box and centroid
const V3f* P = (V3f*)fields[0].as<float>();
V3d Psum(0);
for (size_t i = 0; i < npoints; ++i)
{
Psum += P[i];
bbox.extendBy(P[i]);
}
if (npoints > 0)
centroid = (1.0/npoints) * Psum;
centroid += offset;
bbox.min += offset;
bbox.max += offset;
return true;
}
bool GeometryMutator::loadFile(const QString& fileName)
{
// Check it is ply
if (!fileName.toLower().endsWith(".ply"))
{
g_logger.error("Expected ply for file %s", fileName);
return false;
}
try
{
std::unique_ptr<t_ply_, int(*)(p_ply)> ply(
ply_open(fileName.toUtf8().constData(), logRplyError, 0, NULL), ply_close);
if (!ply || !ply_read_header(ply.get()))
return false;
// Parse out header data
p_ply_element vertexElement = findVertexElement(ply.get(), m_npoints);
if (vertexElement)
{
g_logger.error("Expected displaz formatted ply for file %s", fileName);
return false;
}
else
{
if (!loadDisplazNativePly(fileName, ply.get(), m_fields, m_offset, m_npoints))
return false;
}
}
catch(...)
{
g_logger.error("Unkown load error for file %s", fileName);
return false;
}
// Search for index field
m_indexFieldIdx = -1;
for (size_t i = 0; i < m_fields.size(); ++i)
{
if (m_fields[i].name == "index")
{
if (!(m_fields[i].spec == TypeSpec::uint32()))
{
g_logger.error("The \"index\" field found in file %s is not of type uint32", fileName);
return false;
}
m_indexFieldIdx = (int)i;
break;
}
}
if (m_indexFieldIdx == -1)
{
g_logger.error("No \"index\" field found in file %s", fileName);
return false;
}
m_index = m_fields[m_indexFieldIdx].as<uint32_t>();
g_logger.info("Loaded %d point mutations from file %s",
m_npoints, fileName);
return true;
}
