summaryrefslogtreecommitdiffstats
path: root/src/core/render/io/objloader.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/core/render/io/objloader.h')
-rw-r--r--src/core/render/io/objloader.h143
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