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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Copyright (C) 2015 The Qt Company Ltd and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef GLTFPARSER_H
#define GLTFPARSER_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/QJsonDocument>
#include <QtCore/QMultiHash>
#include <Qt3DRender/qattribute.h>
#include <Qt3DRender/qbuffer.h>
#include <Qt3DRender/private/abstractsceneparser_p.h>
QT_BEGIN_NAMESPACE
class QFile;
namespace Qt3DCore {
class QCamera;
class QCameraLens;
class QEntity;
}
namespace Qt3DRender {
class QMaterial;
class QShaderProgram;
class QEffect;
class QAbstractTextureProvider;
class QRenderState;
class QTechnique;
class QParameter;
class QGeometryRenderer;
Q_DECLARE_LOGGING_CATEGORY(GLTFParserLog)
class GLTFParser : public AbstractSceneParser
{
Q_OBJECT
Q_PLUGIN_METADATA(IID "org.qt-project.Qt3DRenderer.GLTFParser")
public:
GLTFParser();
~GLTFParser();
void setBasePath(const QString& path);
bool setJSON( const QJsonDocument &json );
// SceneParserInterface interface
void setSource(const QUrl &source) Q_DECL_FINAL;
bool isExtensionSupported(const QUrl &source) const Q_DECL_FINAL;
Qt3DCore::QEntity *node(const QString &id) Q_DECL_FINAL;
Qt3DCore::QEntity *scene(const QString &id = QString()) Q_DECL_FINAL;
private:
class BufferData
{
public:
BufferData();
BufferData(QJsonObject json);
quint64 length;
QString path;
QByteArray *data;
// type if ever useful
};
class ParameterData
{
public:
ParameterData();
ParameterData(QJsonObject json);
QString semantic;
int type;
};
class AccessorData
{
public:
AccessorData();
AccessorData(const QJsonObject& json);
QString bufferViewName;
QAttribute::DataType type;
uint dataSize;
int count;
int offset;
int stride;
};
static bool isGLTFPath(const QString &path);
static void renameFromJson(const QJsonObject& json, QObject * const object );
static QString standardUniformNamefromSemantic(const QString &semantic);
static QString standardAttributeNameFromSemantic(const QString &semantic);
static QParameter *parameterFromTechnique(QTechnique *technique, const QString ¶meterName);
Qt3DCore::QEntity *defaultScene();
QMaterial *material(const QString &id);
Qt3DCore::QCameraLens *camera(const QString &id) const;
void parse();
void cleanup();
void processJSONBuffer(const QString &id, const QJsonObject &json);
void processJSONBufferView(const QString &id, const QJsonObject &json);
void processJSONShader(const QString &id, const QJsonObject &jsonObject);
void processJSONProgram(const QString &id, const QJsonObject &jsonObject);
void processJSONTechnique(const QString &id, const QJsonObject &jsonObject);
void processJSONAccessor(const QString &id, const QJsonObject &json);
void processJSONMesh(const QString &id, const QJsonObject &json);
void processJSONImage(const QString &id, const QJsonObject &jsonObject);
void processJSONTexture(const QString &id, const QJsonObject &jsonObject);
void loadBufferData();
void unloadBufferData();
QFile* resolveLocalData(QString path) const;
QVariant parameterValueFromJSON(int type, const QJsonValue &value) const;
static Qt3DCore::QAbstractAttribute::DataType accessorTypeFromJSON(int componentType);
static uint accessorDataSizeFromJson(const QString &type);
static QRenderState *buildStateEnable(int state);
static QRenderState *buildState(const QString& functionName, const QJsonValue &value, int &type);
QJsonDocument m_json;
QString m_basePath;
bool m_parseDone;
QString m_defaultScene;
// multi-hash because our QMeshData corresponds to a single primitive
// in glTf.
QMultiHash<QString, QGeometryRenderer*> m_meshDict;
// GLTF assigns materials at the mesh level, but we do them as siblings,
// so record the association here for when we instantiate meshes
QMap<QGeometryRenderer*, QString> m_meshMaterialDict;
QMap<QString, AccessorData> m_accessorDict;
QMap<QString, QMaterial*> m_materialCache;
QMap<QString, BufferData> m_bufferDatas;
QMap<QString, QBuffer*> m_buffers;
QMap<QString, QString> m_shaderPaths;
QMap<QString, QShaderProgram*> m_programs;
QMap<QString, QTechnique *> m_techniques;
QMap<QParameter*, ParameterData> m_parameterDataDict;
QMap<QString, QAbstractTextureProvider*> m_textures;
QMap<QString, QString> m_imagePaths;
};
} // namespace Qt3DRender
QT_END_NAMESPACE
#endif // GLTFPARSER_H
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