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Diffstat (limited to 'src/plugins/geometryloaders/gltf/gltfgeometryloader.h')
| -rw-r--r-- | src/plugins/geometryloaders/gltf/gltfgeometryloader.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/src/plugins/geometryloaders/gltf/gltfgeometryloader.h b/src/plugins/geometryloaders/gltf/gltfgeometryloader.h new file mode 100644 index 000000000..36ac0f174 --- /dev/null +++ b/src/plugins/geometryloaders/gltf/gltfgeometryloader.h @@ -0,0 +1,194 @@ +/**************************************************************************** +** +** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB). +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt3D module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 https://www.qt.io/terms-conditions. For further +** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef GLTFGEOMETRYLOADER_H +#define GLTFGEOMETRYLOADER_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 <Qt3DRender/private/qgeometryloaderinterface_p.h> +#include <Qt3DCore/qattribute.h> +#include <Qt3DCore/qbuffer.h> + +#include <private/qlocale_tools_p.h> + +QT_BEGIN_NAMESPACE + +namespace Qt3DCore { +class QGeometry; +} + +namespace Qt3DRender { + +#define GLTFGEOMETRYLOADER_EXT QLatin1String("gltf") +#define JSONGEOMETRYLOADER_EXT QLatin1String("json") +#define QGLTFGEOMETRYLOADER_EXT QLatin1String("qgltf") + +class QCamera; +class QCameraLens; +class QMaterial; +class QShaderProgram; +class QEffect; +class QAbstractTexture; +class QRenderState; +class QTechnique; +class QParameter; +class QGeometryRenderer; + +class GLTFGeometryLoader : public QGeometryLoaderInterface +{ + class BufferData + { + public: + BufferData(); + explicit BufferData(const QJsonObject &json); + + quint64 length; + QString path; + QByteArray *data; + // type if ever useful + }; + + class ParameterData + { + public: + ParameterData(); + explicit ParameterData(const QJsonObject &json); + + QString semantic; + int type; + }; + + class AccessorData + { + public: + AccessorData(); + explicit AccessorData(const QJsonObject &json); + + QString bufferViewName; + int bufferViewIndex; + Qt3DCore::QAttribute::VertexBaseType type; + uint dataSize; + int count; + int offset; + int stride; + }; + + struct Gltf1 + { + QHash<QString, AccessorData> m_accessorDict; + QHash<QString, BufferData> m_bufferDatas; + QHash<QString, Qt3DCore::QBuffer*> m_buffers; + }; + + struct Gltf2 + { + QVector<BufferData> m_bufferDatas; + QVector<Qt3DCore::QBuffer*> m_buffers; + QVector<AccessorData> m_accessors; + }; + + Q_OBJECT +public: + GLTFGeometryLoader(); + ~GLTFGeometryLoader(); + + Qt3DCore::QGeometry *geometry() const final; + + bool load(QIODevice *ioDev, const QString &subMesh = QString()) final; + +protected: + void setBasePath(const QString &path); + bool setJSON(const QJsonDocument &json); + + static QString standardAttributeNameFromSemantic(const QString &semantic); + + void parse(); + void parseGLTF1(); + void parseGLTF2(); + void cleanup(); + + void processJSONBuffer(const QString &id, const QJsonObject &json); + void processJSONBufferView(const QString &id, const QJsonObject &json); + void processJSONAccessor(const QString &id, const QJsonObject &json); + void processJSONMesh(const QString &id, const QJsonObject &json); + + void loadBufferData(); + void unloadBufferData(); + + void processJSONBufferV2(const QJsonObject &json); + void processJSONBufferViewV2(const QJsonObject &json); + void processJSONAccessorV2(const QJsonObject &json); + void processJSONMeshV2(const QJsonObject &json); + + void loadBufferDataV2(); + void unloadBufferDataV2(); + + QByteArray resolveLocalData(const QString &path) const; + + static Qt3DCore::QAttribute::VertexBaseType accessorTypeFromJSON(int componentType); + static uint accessorDataSizeFromJson(const QString &type); + +private: + QJsonDocument m_json; + QString m_basePath; + QString m_mesh; + + Gltf1 m_gltf1; + Gltf2 m_gltf2; + + Qt3DCore::QGeometry *m_geometry; +}; + +} // namespace Qt3DRender + +QT_END_NAMESPACE + +#endif // GLTFGEOMETRYLOADER_H |