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#pragma once
/**
* @file asset.h
* @brief LL GLTF Implementation
*
* $LicenseInfo:firstyear=2024&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2024, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "llstrider.h"
#include "boost/json.hpp"
#include "common.h"
// LL GLTF Implementation
namespace LL
{
namespace GLTF
{
constexpr S32 INVALID_INDEX = -1;
class Buffer
{
public:
std::vector<U8> mData;
std::string mName;
std::string mUri;
S32 mByteLength = 0;
// erase the given range from this buffer.
// also updates all buffer views in given asset that reference this buffer
void erase(Asset& asset, S32 offset, S32 length);
bool prep(Asset& asset);
void serialize(boost::json::object& obj) const;
const Buffer& operator=(const Value& value);
bool save(Asset& asset, const std::string& folder);
};
class BufferView
{
public:
S32 mBuffer = INVALID_INDEX;
S32 mByteLength = 0;
S32 mByteOffset = 0;
S32 mByteStride = 0;
S32 mTarget = -1;
std::string mName;
void serialize(boost::json::object& obj) const;
const BufferView& operator=(const Value& value);
};
class Accessor
{
public:
enum class Type : U8
{
SCALAR,
VEC2,
VEC3,
VEC4,
MAT2,
MAT3,
MAT4
};
enum class ComponentType : U32
{
BYTE = 5120,
UNSIGNED_BYTE = 5121,
SHORT = 5122,
UNSIGNED_SHORT = 5123,
UNSIGNED_INT = 5125,
FLOAT = 5126
};
std::vector<double> mMax;
std::vector<double> mMin;
std::string mName;
S32 mBufferView = INVALID_INDEX;
S32 mByteOffset = 0;
ComponentType mComponentType = ComponentType::BYTE;
S32 mCount = 0;
Type mType = Type::SCALAR;
bool mNormalized = false;
void serialize(boost::json::object& obj) const;
const Accessor& operator=(const Value& value);
};
// convert from "SCALAR", "VEC2", etc to Accessor::Type
Accessor::Type gltf_type_to_enum(const std::string& type);
// convert from Accessor::Type to "SCALAR", "VEC2", etc
std::string enum_to_gltf_type(Accessor::Type type);
}
}
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