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Diffstat (limited to 'src/core/render/io/objloader.h')
-rw-r--r-- | src/core/render/io/objloader.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/src/core/render/io/objloader.h b/src/core/render/io/objloader.h new file mode 100644 index 000000000..6c7ae93c0 --- /dev/null +++ b/src/core/render/io/objloader.h @@ -0,0 +1,143 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). +** Contact: http://www.qt-project.org/legal +** +** 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 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 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef OBJLOADER_H +#define OBJLOADER_H + +#include "meshdata.h" + +#include <QVector> +#include <QVector2D> +#include <QVector3D> +#include <QVector4D> + +#include <limits> + +class QString; +class QIODevice; + +namespace Qt3D { + +struct FaceIndices +{ + FaceIndices() + : positionIndex(std::numeric_limits<unsigned int>::max()) + , texCoordIndex(std::numeric_limits<unsigned int>::max()) + , normalIndex(std::numeric_limits<unsigned int>::max()) + {} + + FaceIndices(unsigned int posIndex, unsigned int tcIndex, unsigned int nIndex) + : positionIndex(posIndex) + , texCoordIndex(tcIndex) + , normalIndex(nIndex) + {} + + bool operator == (const FaceIndices &other) const + { + return positionIndex == other.positionIndex && + texCoordIndex == other.texCoordIndex && + normalIndex == other.normalIndex; + } + + unsigned int positionIndex; + unsigned int texCoordIndex; + unsigned int normalIndex; +}; + +class ObjLoader +{ +public: + ObjLoader(); + + void setLoadTextureCoordinatesEnabled( bool b ) { m_loadTextureCoords = b; } + bool isLoadTextureCoordinatesEnabled() const { return m_loadTextureCoords; } + + void setTangentGenerationEnabled( bool b ) { m_generateTangents = b; } + bool isTangentGenerationEnabled() const { return m_generateTangents; } + + void setMeshCenteringEnabled( bool b ) { m_centerMesh = b; } + bool isMeshCenteringEnabled() const { return m_centerMesh; } + + bool hasNormals() const { return !m_normals.isEmpty(); } + bool hasTextureCoordinates() const { return !m_texCoords.isEmpty(); } + bool hasTangents() const { return !m_tangents.isEmpty(); } + + bool load( const QString& fileName ); + bool load( ::QIODevice* ioDev ); + + QVector<QVector3D> vertices() const { return m_points; } + QVector<QVector3D> normals() const { return m_normals; } + QVector<QVector2D> textureCoordinates() const { return m_texCoords; } + QVector<QVector4D> tangents() const { return m_tangents; } + QVector<unsigned int> indices() const { return m_indices; } + + MeshDataPtr mesh() const; + +private: + void updateIndices(const QVector<QVector3D> &positions, + const QVector<QVector3D> &normals, + const QVector<QVector2D> &texCoords, + const QHash<FaceIndices, unsigned int> &faceIndexMap, + const QVector<FaceIndices> &faceIndexVector); + void generateAveragedNormals( const QVector<QVector3D>& points, + QVector<QVector3D>& normals, + const QVector<unsigned int>& faces ) const; + void generateTangents( const QVector<QVector3D>& points, + const QVector<QVector3D>& normals, + const QVector<unsigned int>& faces, + const QVector<QVector2D>& texCoords, + QVector<QVector4D>& tangents ) const; + void center( QVector<QVector3D>& points ); + + bool m_loadTextureCoords; + bool m_generateTangents; + bool m_centerMesh; + + QVector<QVector3D> m_points; + QVector<QVector3D> m_normals; + QVector<QVector2D> m_texCoords; + QVector<QVector4D> m_tangents; + QVector<unsigned int> m_indices; +}; + +} + +#endif // OBJLOADER_H |