OgUtil.cpp
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//----------------------------------------------------------------------------//
// Includes
//----------------------------------------------------------------------------//
#include "OgUtil.h"
//----------------------------------------------------------------------------//
FIELD3D_NAMESPACE_OPEN
//----------------------------------------------------------------------------//
// Helper functions
//----------------------------------------------------------------------------//
const char* ogGroupTypeToString(OgGroupType type)
{
switch(type)
{
case F3DGroupType:
return "group";
case F3DAttributeType:
return "attribute";
case F3DDatasetType:
return "dataset";
default:
return "";
}
}
//----------------------------------------------------------------------------//
bool readString(Alembic::Ogawa::IGroupPtr group, const size_t idx,
std::string &s)
{
// Grab data
Alembic::Ogawa::IDataPtr data = group->getData(idx, OGAWA_THREAD);
// Check that we got something
if (!data) {
std::cout << "OgUtil::readString() got null data for index "
<< idx << std::endl;
std::cout << " numChildren(): " << group->getNumChildren() << std::endl;
return false;
}
// Check data length
const size_t length = data->getSize();
if (length % sizeof(std::string::value_type) != 0) {
return false;
}
// String length
const size_t stringLength = length / sizeof(std::string::value_type);
// Read into temp buffer. Reading straight into std::string is Bad.
std::vector<std::string::value_type> temp(stringLength + 1);
// Add null terminator
temp[stringLength] = 0;
// Read the data
data->read(length, &temp[0], 0, OGAWA_THREAD);
// Construct string. The string see the temp buffer as a const char *.
s = std::string(&temp[0]);
// Done
return true;
}
//----------------------------------------------------------------------------//
OgDataType readDataType(Alembic::Ogawa::IGroupPtr group, const size_t idx)
{
// Data type
OgDataType dataType;;
// Grab data
Alembic::Ogawa::IDataPtr data = group->getData(idx, OGAWA_THREAD);
// Check data length
const size_t sizeLength = sizeof(OgDataType);
const size_t length = data->getSize();
if (length != sizeLength) {
std::cout << "readDataType() " << sizeLength << " != " << length << std::endl;
return F3DInvalidDataType;
}
// Read the data directly to the input param
data->read(length, &dataType, 0, OGAWA_THREAD);
// Done
return dataType;
}
//----------------------------------------------------------------------------//
bool writeString(Alembic::Ogawa::OGroupPtr group, const std::string &s)
{
// Strings are written without zero terminator
Alembic::Ogawa::ODataPtr data =
group->addData(s.size() * sizeof(std::string::value_type), s.c_str());
return data != NULL;
}
//----------------------------------------------------------------------------//
bool getGroupName(Alembic::Ogawa::IGroupPtr group,
std::string &name)
{
return readString(group, 0, name);
}
//----------------------------------------------------------------------------//
FIELD3D_NAMESPACE_SOURCE_CLOSE
//----------------------------------------------------------------------------//
writeString
bool writeString(Alembic::Ogawa::OGroupPtr group, const std::string &s)
Definition OgUtil.cpp:86
getGroupName
bool getGroupName(Alembic::Ogawa::IGroupPtr group, std::string &name)
Definition OgUtil.cpp:96
readDataType
OgDataType readDataType(Alembic::Ogawa::IGroupPtr group, const size_t idx)
Definition OgUtil.cpp:65
ogGroupTypeToString
FIELD3D_NAMESPACE_OPEN const char * ogGroupTypeToString(OgGroupType type)
Definition OgUtil.cpp:15
readString
bool readString(Alembic::Ogawa::IGroupPtr group, const size_t idx, std::string &s)
Definition OgUtil.cpp:32
OgDataType
OgDataType
Enumerates the various uses for Ogawa-level groups.
Definition Traits.h:125
F3DInvalidDataType
@ F3DInvalidDataType
Definition Traits.h:160
FIELD3D_NAMESPACE_OPEN
Definition FieldMapping.cpp:74
FIELD3D_NAMESPACE_SOURCE_CLOSE
#define FIELD3D_NAMESPACE_SOURCE_CLOSE
Definition ns.h:60