qgsmeshlayerutils.h

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/***************************************************************************
                         qgsmeshlayerutils.h
                         --------------------------
    begin                : August 2018
    copyright            : (C) 2018 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 QGSMESHLAYERUTILS_H
#define QGSMESHLAYERUTILS_H

#define SIP_NO_FILE

#include "qgis_core.h"
#include "qgsrectangle.h"
#include "qgsmaptopixel.h"
#include "qgsmeshdataprovider.h"
#include "qgsmeshrenderersettings.h"

#include <QVector>
#include <QSize>


class QgsMeshTimeSettings;
class QgsTriangularMesh;
class QgsMeshDataBlock;
class QgsMesh3dAveragingMethod;
class QgsMeshDatasetValue;
class QgsMeshLayer;

class CORE_EXPORT QgsMeshLayerUtils
{
  public:

    static QgsMeshDataBlock datasetValues(
      const QgsMeshLayer *meshLayer,
      QgsMeshDatasetIndex index,
      int valueIndex,
      int count );

    static QVector<double> calculateMagnitudes( const QgsMeshDataBlock &block );

    static void boundingBoxToScreenRectangle(
      const QgsMapToPixel &mtp,
      const QSize &outputSize,
      const QgsRectangle &bbox,
      int &leftLim, int &rightLim, int &topLim, int &bottomLim );

    static double interpolateFromVerticesData(
      const QgsPointXY &p1, const QgsPointXY &p2, const QgsPointXY &p3,
      double val1, double val2, double val3, const QgsPointXY &pt
    );

    static QgsVector interpolateVectorFromVerticesData(
      const QgsPointXY &p1, const QgsPointXY &p2, const QgsPointXY &p3,
      QgsVector vect1, QgsVector vect2, QgsVector vect3, const QgsPointXY &pt
    );

    static double interpolateFromFacesData(
      const QgsPointXY &p1, const QgsPointXY &p2, const QgsPointXY &p3,
      double val, const QgsPointXY &pt );

    static QgsVector interpolateVectorFromFacesData(
      const QgsPointXY &p1, const QgsPointXY &p2, const QgsPointXY &p3,
      QgsVector vect, const QgsPointXY &pt );

    static QVector<double> interpolateFromFacesData(
      QVector<double> valuesOnFaces,
      const QgsMesh *nativeMesh,
      const QgsTriangularMesh *triangularMesh,
      QgsMeshDataBlock *active,
      QgsMeshRendererScalarSettings::DataInterpolationMethod method
    );

    static QgsRectangle triangleBoundingBox( const QgsPointXY &p1, const QgsPointXY &p2, const QgsPointXY &p3 );

    static QString formatTime( double hours, const QgsMeshTimeSettings &settings );

    static QDateTime firstReferenceTime( QgsMeshLayer *meshLayer );

};


#endif // QGSMESHLAYERUTILS_H