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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#ifndef VERTEXINDEXER_P_H
+#define VERTEXINDEXER_P_H
+
+#include "qdatavis3dglobal.h"
+
+#include <QVector>
+#include <QVector2D>
+#include <QVector3D>
+
+QTCOMMERCIALDATAVIS3D_BEGIN_NAMESPACE
+
+class VertexIndexer
+{
+ public:
+ struct PackedVertex {
+ QVector3D position;
+ QVector2D uv;
+ QVector3D normal;
+ bool operator<(const PackedVertex that) const {
+ return memcmp((void*)this, (void*)&that, sizeof(PackedVertex)) > 0;
+ }
+ };
+
+ static void indexVBO(const QVector<QVector3D> &in_vertices,
+ const QVector<QVector2D> &in_uvs,
+ const QVector<QVector3D> &in_normals,
+ QVector<unsigned short> &out_indices,
+ QVector<QVector3D> &out_vertices,
+ QVector<QVector2D> &out_uvs,
+ QVector<QVector3D> &out_normals);
+
+ static void indexVBO_TBN(const QVector<QVector3D> &in_vertices,
+ const QVector<QVector2D> &in_uvs,
+ const QVector<QVector3D> &in_normals,
+ const QVector<QVector3D> &in_tangents,
+ const QVector<QVector3D> &in_bitangents,
+ QVector<unsigned short> &out_indices,
+ QVector<QVector3D> &out_vertices,
+ QVector<QVector2D> &out_uvs,
+ QVector<QVector3D> &out_normals,
+ QVector<QVector3D> &out_tangents,
+ QVector<QVector3D> &out_bitangents);
+
+ private:
+ static bool is_near(float v1, float v2);
+ static bool getSimilarVertexIndex(const QVector3D &in_vertex,
+ const QVector2D &in_uv,
+ const QVector3D &in_normal,
+ QVector<QVector3D> &out_vertices,
+ QVector<QVector2D> &out_uvs,
+ QVector<QVector3D> &out_normals,
+ unsigned short &result);
+ static bool getSimilarVertexIndex_fast(const PackedVertex &packed,
+ QMap<PackedVertex, unsigned short> &VertexToOutIndex,
+ unsigned short &result);
+};
+
+QTCOMMERCIALDATAVIS3D_END_NAMESPACE
+
+#endif