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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2015 Blender Foundation.
* All rights reserved.
*/
#include "openvdb_reader.h"
#include "openvdb_util.h"
OpenVDBReader::OpenVDBReader() : m_meta_map(new openvdb::MetaMap), m_file(NULL)
{
/* Although it is safe, it may not be good to have this here, could be done
* once instead of everytime we read a file. */
openvdb::initialize();
}
OpenVDBReader::~OpenVDBReader()
{
cleanupFile();
}
void OpenVDBReader::open(const openvdb::Name &filename)
{
cleanupFile();
try {
m_file = new openvdb::io::File(filename);
m_file->setCopyMaxBytes(0);
m_file->open();
m_meta_map = m_file->getMetadata();
}
/* Mostly to catch exceptions related to Blosc not being supported. */
catch (const openvdb::IoError &e) {
std::cerr << e.what() << '\n';
cleanupFile();
}
}
void OpenVDBReader::floatMeta(const openvdb::Name &name, float &value) const
{
try {
value = m_meta_map->metaValue<float>(name);
}
CATCH_KEYERROR;
}
void OpenVDBReader::intMeta(const openvdb::Name &name, int &value) const
{
try {
value = m_meta_map->metaValue<int>(name);
}
CATCH_KEYERROR;
}
void OpenVDBReader::vec3sMeta(const openvdb::Name &name, float value[3]) const
{
try {
openvdb::Vec3s meta_val = m_meta_map->metaValue<openvdb::Vec3s>(name);
value[0] = meta_val.x();
value[1] = meta_val.y();
value[2] = meta_val.z();
}
CATCH_KEYERROR;
}
void OpenVDBReader::vec3IMeta(const openvdb::Name &name, int value[3]) const
{
try {
openvdb::Vec3i meta_val = m_meta_map->metaValue<openvdb::Vec3i>(name);
value[0] = meta_val.x();
value[1] = meta_val.y();
value[2] = meta_val.z();
}
CATCH_KEYERROR;
}
void OpenVDBReader::mat4sMeta(const openvdb::Name &name, float value[4][4]) const
{
try {
openvdb::Mat4s meta_val = m_meta_map->metaValue<openvdb::Mat4s>(name);
for (int i = 0; i < 4; ++i) {
for (int j = 0; j < 4; ++j) {
value[i][j] = meta_val[i][j];
}
}
}
CATCH_KEYERROR;
}
bool OpenVDBReader::hasGrid(const openvdb::Name &name) const
{
return m_file->hasGrid(name);
}
openvdb::GridBase::Ptr OpenVDBReader::getGrid(const openvdb::Name &name) const
{
return m_file->readGrid(name);
}
size_t OpenVDBReader::numGrids() const
{
return m_file->getGrids()->size();
}
void OpenVDBReader::cleanupFile()
{
if (m_file) {
m_file->close();
delete m_file;
}
}
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