qgstessellatedpolygongeometry.h

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/***************************************************************************
  qgstessellatedpolygongeometry.h
  --------------------------------------
  Date                 : July 2017
  Copyright            : (C) 2017 by Martin Dobias
  Email                : wonder dot sk at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSTESSELLATEDPOLYGONGEOMETRY_H
#define QGSTESSELLATEDPOLYGONGEOMETRY_H
 
#include "qgsfeatureid.h"
 
#include <Qt3DCore/QGeometry>
 
#define SIP_NO_FILE
 
class Qgs3DSceneExporter;
class QgsPolygon;
class QgsPointXY;
 
namespace Qt3DCore
{
  class QBuffer;
}
 

class QgsTessellatedPolygonGeometry : public Qt3DCore::QGeometry
{
    Q_OBJECT
  public:
    QgsTessellatedPolygonGeometry( bool _withNormals = true, bool invertNormals = false, bool addBackFaces = false, bool addTextureCoords = false, bool withTangents = false, QNode *parent = nullptr );

    bool invertNormals() const { return mInvertNormals; }
    void setInvertNormals( bool invert ) { mInvertNormals = invert; }

    bool addBackFaces() const { return mAddBackFaces; }

    void setAddBackFaces( bool add ) { mAddBackFaces = add; }

    void setAddTextureCoords( bool add ) { mAddTextureCoords = add; }

    void setVertexBufferData( const QByteArray &vertexBufferData, int vertexCount, const QVector<QgsFeatureId> &triangleIndexFids, const QVector<uint> &triangleIndexStartingIndices );

    void setIndexBufferData( const QByteArray &indexBufferData, size_t indexCount );

    QgsFeatureId triangleIndexToFeatureId( uint triangleIndex ) const;

    QVector<QgsFeatureId> featureIds() const { return mTriangleIndexFids; }

    QVector<uint> triangleIndexStartingIndices() const { return mTriangleIndexStartingIndices; }
 
    friend class Qgs3DSceneExporter;
 
  private:
    Qt3DCore::QAttribute *mPositionAttribute = nullptr;
    Qt3DCore::QAttribute *mNormalAttribute = nullptr;
    Qt3DCore::QAttribute *mTangentAttribute = nullptr;
    Qt3DCore::QAttribute *mTextureCoordsAttribute = nullptr;
    Qt3DCore::QBuffer *mVertexBuffer = nullptr;
    Qt3DCore::QBuffer *mIndexBuffer = nullptr;
    Qt3DCore::QAttribute *mIndexAttribute = nullptr;
 
    QVector<QgsFeatureId> mTriangleIndexFids;
    QVector<uint> mTriangleIndexStartingIndices;
 
    bool mWithNormals = true;
    bool mInvertNormals = false;
    bool mAddBackFaces = false;
    bool mAddTextureCoords = false;
    bool mWithTangents = false;
};
 
#endif // QGSTESSELLATEDPOLYGONGEOMETRY_H