/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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.
 *
 * Contributor(s): Kevin Dietrich
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "openvdb_writer.h"
#include "openvdb_util.h"

OpenVDBWriter::OpenVDBWriter()
    : m_grids(new openvdb::GridPtrVec())
    , m_meta_map(new openvdb::MetaMap())
    , m_save_as_half(false)
{
	m_meta_map->insertMeta("creator", openvdb::StringMetadata("Blender/Smoke"));
}

OpenVDBWriter::~OpenVDBWriter()
{}

void OpenVDBWriter::insert(const openvdb::GridBase::Ptr &grid)
{
	grid->setSaveFloatAsHalf(m_save_as_half);
	m_grids->push_back(grid);
}

void OpenVDBWriter::insert(const openvdb::GridBase &grid)
{
#if (OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER == 3)
	m_grids->push_back(grid.copyGrid());
#else
	m_grids->push_back(grid.copyGridWithNewTree());
#endif
}

void OpenVDBWriter::insertFloatMeta(const openvdb::Name &name, const float value)
{
	try {
		m_meta_map->insertMeta(name, openvdb::FloatMetadata(value));
	}
	CATCH_KEYERROR;
}

void OpenVDBWriter::insertIntMeta(const openvdb::Name &name, const int value)
{
	try {
		m_meta_map->insertMeta(name, openvdb::Int32Metadata(value));
	}
	CATCH_KEYERROR;
}

void OpenVDBWriter::insertVec3sMeta(const openvdb::Name &name, const openvdb::Vec3s &value)
{
	try {
		m_meta_map->insertMeta(name, openvdb::Vec3SMetadata(value));
	}
	CATCH_KEYERROR;
}

void OpenVDBWriter::insertVec3IMeta(const openvdb::Name &name, const openvdb::Vec3I &value)
{
	try {
		m_meta_map->insertMeta(name, openvdb::Vec3IMetadata(value));
	}
	CATCH_KEYERROR;
}

void OpenVDBWriter::insertMat4sMeta(const openvdb::Name &name, const float value[4][4])
{
	openvdb::Mat4s mat = openvdb::Mat4s(
	    value[0][0], value[0][1], value[0][2], value[0][3],
	    value[1][0], value[1][1], value[1][2], value[1][3],
	    value[2][0], value[2][1], value[2][2], value[2][3],
	    value[3][0], value[3][1], value[3][2], value[3][3]);

	try {
		m_meta_map->insertMeta(name, openvdb::Mat4SMetadata(mat));
	}
	CATCH_KEYERROR;
}

void OpenVDBWriter::setFlags(const int compression, const bool save_as_half)
{
	m_compression_flags = compression;
	m_save_as_half = save_as_half;
}

void OpenVDBWriter::write(const openvdb::Name &filename) const
{
	try {
		openvdb::io::File file(filename);
		file.setCompression(m_compression_flags);
		file.write(*m_grids, *m_meta_map);
		file.close();

		/* Should perhaps be an option at some point */
		m_grids->clear();
	}
	/* Mostly to catch exceptions related to Blosc not being supported. */
	catch (const openvdb::IoError &e) {
		std::cerr << e.what() << '\n';
	}
}