qgsalgorithmdrape.h

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/***************************************************************************
                         qgsalgorithmdrape.h
                         ---------------------
    begin                : November 2017
    copyright            : (C) 2017 by Nyall Dawson
    email                : nyall dot dawson 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 QGSALGORITHMDRAPE_H
#define QGSALGORITHMDRAPE_H
 
#define SIP_NO_FILE
 
#include "qgis_sip.h"
#include "qgsprocessingalgorithm.h"
 
 
class QgsDrapeAlgorithmBase : public QgsProcessingFeatureBasedAlgorithm
{
  public:
    QString group() const override;
    QString groupId() const override;
    void initParameters( const QVariantMap &configuration = QVariantMap() ) override;
 
  protected:
    QString outputName() const override;
    bool prepareAlgorithm( const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
    QgsFeatureList processFeature( const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
 
  private:
    virtual void prepareGeometry( QgsGeometry &geometry, double defaultVal ) const = 0;
    virtual QgsPoint drapeVertex( const QgsPoint &vertex, double rasterVal ) const = 0;
 
    double mNoData = 0.0;
    bool mDynamicNoData = false;
    QgsProperty mNoDataProperty;
 
    double mScale = 1.0;
    bool mDynamicScale = false;
    QgsProperty mScaleProperty;
 
    double mOffset = 0.0;
    bool mDynamicOffset = false;
    QgsProperty mOffsetProperty;
 
    std::unique_ptr<QgsRasterDataProvider> mRasterProvider;
    int mBand = 1;
    QgsRectangle mRasterExtent;
    bool mCreatedTransform = false;
    QgsCoordinateTransform mTransform;
};
 
class QgsDrapeToZAlgorithm : public QgsDrapeAlgorithmBase
{
  public:
    QString name() const override;
    QString displayName() const override;
    QStringList tags() const override;
    QString shortHelpString() const override;
    QString shortDescription() const override;
    QgsDrapeToZAlgorithm *createInstance() const override SIP_FACTORY;
    bool supportInPlaceEdit( const QgsMapLayer *layer ) const override;
 
  protected:
    Qgis::WkbType outputWkbType( Qgis::WkbType inputWkbType ) const override;
 
  private:
    void prepareGeometry( QgsGeometry &geometry, double defaultVal ) const override;
    QgsPoint drapeVertex( const QgsPoint &vertex, double rasterVal ) const override;
};
 
 
class QgsDrapeToMAlgorithm : public QgsDrapeAlgorithmBase
{
  public:
    QString name() const override;
    QString displayName() const override;
    QStringList tags() const override;
    QString shortHelpString() const override;
    QString shortDescription() const override;
    QgsDrapeToMAlgorithm *createInstance() const override SIP_FACTORY;
    bool supportInPlaceEdit( const QgsMapLayer *layer ) const override;
 
  protected:
    Qgis::WkbType outputWkbType( Qgis::WkbType inputWkbType ) const override;
 
  private:
    void prepareGeometry( QgsGeometry &geometry, double defaultVal ) const override;
    QgsPoint drapeVertex( const QgsPoint &vertex, double rasterVal ) const override;
};
 
 
#endif // QGSALGORITHMDRAPE_H