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
 
 
#include "qgis_core.h"
#include "qgsmaptopixel.h"
#include "qgsmeshdataprovider.h"
#include "qgsmeshrenderersettings.h"
#include "qgsrectangle.h"
 
#include <QSize>
#include <QVector>
 
#define SIP_NO_FILE

 
class QgsMeshTimeSettings;
class QgsTriangularMesh;
class QgsMeshDataBlock;
class QgsMesh3DAveragingMethod;
class QgsMeshDatasetValue;
class QgsMeshLayer;

class CORE_EXPORT QgsMeshLayerUtils
{
  public:
    static int datasetValuesCount( const QgsMesh *mesh, QgsMeshDatasetGroupMetadata::DataType dataType );

    static QgsMeshDatasetGroupMetadata::DataType datasetValuesType( const QgsMeshDatasetGroupMetadata::DataType &type );

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

    static QVector<QgsVector> griddedVectorValues( const QgsMeshLayer *meshLayer, const QgsMeshDatasetIndex index, double xSpacing, double ySpacing, const QSize &size, const QgsPointXY &minCorner );

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

    static void boundingBoxToScreenRectangle(
      const QgsMapToPixel &mtp, const QSize &outputSize, const QgsRectangle &bbox, int &leftLim, int &rightLim, int &bottomLim, int &topLim, double devicePixelRatio = 1.0
    );

    static QgsRectangle boundingBoxToScreenRectangle( const QgsMapToPixel &mtp, const QgsRectangle &bbox, double devicePixelRatio = 1.0 );

    static bool calculateBarycentricCoordinates( const QgsPointXY &pA, const QgsPointXY &pB, const QgsPointXY &pC, const QgsPointXY &pP, double &lam1, double &lam2, double &lam3 );

    static double interpolateFromVerticesData( double fraction, double val1, double val2 );

    static QgsMeshDatasetValue interpolateFromVerticesData( double fraction, const QgsMeshDatasetValue &val1, const QgsMeshDatasetValue &val2 );

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

    static double interpolateZForPoint( const QgsTriangularMesh &mesh, double x, double y );

    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::DataResamplingMethod method
    );

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

    static QVector<double> interpolateFromFacesData(
      const QVector<double> &valuesOnFaces, const QgsMesh &nativeMesh, const QgsMeshDataBlock &active, QgsMeshRendererScalarSettings::DataResamplingMethod method
    );

    static QVector<double> resampleFromVerticesToFaces(
      const QVector<double> valuesOnVertices, const QgsMesh *nativeMesh, const QgsTriangularMesh *triangularMesh, const QgsMeshDataBlock *active, QgsMeshRendererScalarSettings::DataResamplingMethod method
    );

    static QVector<double> calculateMagnitudeOnVertices(
      const QgsMeshLayer *meshLayer,
      const QgsMeshDatasetIndex index,
      QgsMeshDataBlock *activeFaceFlagValues,
      const QgsMeshRendererScalarSettings::DataResamplingMethod method = QgsMeshRendererScalarSettings::NeighbourAverage
    );

    static QVector<double> calculateMagnitudeOnVertices(
      const QgsMesh &nativeMesh,
      const QgsMeshDatasetGroupMetadata &groupMetadata,
      const QgsMeshDataBlock &datasetValues,
      const QgsMeshDataBlock &activeFaceFlagValues,
      const QgsMeshRendererScalarSettings::DataResamplingMethod method = QgsMeshRendererScalarSettings::NeighbourAverage
    );
 

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

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

    static QVector<QVector3D> calculateNormals( const QgsTriangularMesh &triangularMesh, const QVector<double> &verticalMagnitude, bool isRelative );

    static bool haveSameParentQuantity( const QgsMeshLayer *layer, const QgsMeshDatasetIndex &index1, const QgsMeshDatasetIndex &index2 );
};

 
#endif // QGSMESHLAYERUTILS_H