qgsdirectionallightsettings.cpp

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/***************************************************************************
  qgsdirectionallightsettings.cpp
  --------------------------------------
  Date                 : June 2020
  Copyright            : (C) 2020 by Belgacem Nedjima
  Email                : gb underscore nedjima at esi dot dz
 ***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
 
#include "qgsdirectionallightsettings.h"
 
#include "qgs3dutils.h"
#include "qgscolorutils.h"
#include "qgssymbollayerutils.h"
 
#include <QDomDocument>
#include <QString>
#include <Qt3DCore/QEntity>
#include <Qt3DRender/QDirectionalLight>
 
using namespace Qt::StringLiterals;
 
Qgis::LightSourceType QgsDirectionalLightSettings::type() const
{
  return Qgis::LightSourceType::Directional;
}
 
QgsDirectionalLightSettings *QgsDirectionalLightSettings::clone() const
{
  auto res = std::make_unique< QgsDirectionalLightSettings >( *this );
  res->mId = mId;
  return res.release();
}
 
Qt3DCore::QEntity *QgsDirectionalLightSettings::createEntity( const Qgs3DMapSettings &, Qt3DCore::QEntity *parent ) const
{
  Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity( parent );
 
  Qt3DRender::QDirectionalLight *light = new Qt3DRender::QDirectionalLight;
  light->setColor( Qgs3DUtils::srgbToLinear( color() ) );
  light->setIntensity( static_cast< float >( intensity() ) );
  QgsVector3D direction = QgsDirectionalLightSettings::direction();
  light->setWorldDirection( QVector3D( direction.x(), direction.y(), direction.z() ) );
 
  lightEntity->addComponent( light );
 
  return lightEntity;
}
 
QDomElement QgsDirectionalLightSettings::writeXml( QDomDocument &doc, const QgsReadWriteContext & ) const
{
  QDomElement elemLight = doc.createElement( u"directional-light"_s );
  elemLight.setAttribute( u"id"_s, mId );
  elemLight.setAttribute( u"x"_s, mDirection.x() );
  elemLight.setAttribute( u"y"_s, mDirection.y() );
  elemLight.setAttribute( u"z"_s, mDirection.z() );
  elemLight.setAttribute( u"color"_s, QgsColorUtils::colorToString( mColor ) );
  elemLight.setAttribute( u"intensity"_s, mIntensity );
  return elemLight;
}
 
void QgsDirectionalLightSettings::readXml( const QDomElement &elem, const QgsReadWriteContext & )
{
  if ( elem.hasAttribute( u"id"_s ) )
    mId = elem.attribute( u"id"_s );
 
  mDirection.set( elem.attribute( u"x"_s ).toFloat(), elem.attribute( u"y"_s ).toFloat(), elem.attribute( u"z"_s ).toFloat() );
  mColor = QgsColorUtils::colorFromString( elem.attribute( u"color"_s ) );
  mIntensity = elem.attribute( u"intensity"_s ).toDouble();
}
 
bool QgsDirectionalLightSettings::operator==( const QgsDirectionalLightSettings &other ) const
{
  return mId == other.mId && mDirection == other.mDirection && mColor == other.mColor && qgsDoubleNear( mIntensity, other.mIntensity );
}