blob: 8c1e36b7e5310e3e0d4eaea616f3683f9d56f5da (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once
#include <optional>
#include "BLI_math_vec_types.hh"
#include "usd_writer_abstract.h"
struct Volume;
namespace blender::io::usd {
/* Writer for writing OpenVDB assets to UsdVolVolume. Volume data is stored in separate .vdb files
* which are referenced in USD file. */
class USDVolumeWriter : public USDAbstractWriter {
public:
USDVolumeWriter(const USDExporterContext &ctx);
protected:
virtual bool check_is_animated(const HierarchyContext &context) const override;
virtual void do_write(HierarchyContext &context) override;
private:
/* Try to ensure that external .vdb file is available for USD to be referenced. Blender can
* either reference external OpenVDB data or generate such data internally. Latter option will
* mean that `resolve_vdb_file` method will try to export volume data to a new .vdb file. If
* successful, this method returns absolute file path to the resolved .vdb file, if not, returns
* `std::nullopt`. */
std::optional<std::string> resolve_vdb_file(const Volume *volume) const;
std::optional<std::string> construct_vdb_file_path(const Volume *volume) const;
std::optional<std::string> construct_vdb_relative_file_path(
const std::string &vdb_file_path) const;
};
} // namespace blender::io::usd
|
