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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtDataVisualization module.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the QtDataVisualization 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 "datavisualizationglobal_p.h"
#include <QtCore/QVector>
#include <QtGui/QVector2D>
QT_BEGIN_NAMESPACE_DATAVISUALIZATION
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);
};
QT_END_NAMESPACE_DATAVISUALIZATION
#endif
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