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[FEATURE] Configuration of lights in 3D map scene
This adds a section to define point lights in 3D scenes. Up to 8 lights are supported (limitation by implementation of materials). For each light one can set the position, intensity, color and attenuation
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| Original file line number | Diff line number | Diff line change |
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| /*************************************************************************** | ||
| qgspointlightsettings.cpp | ||
| -------------------------------------- | ||
| Date : November 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. * | ||
| * * | ||
| ***************************************************************************/ | ||
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| #include "qgspointlightsettings.h" | ||
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| #include <QDomDocument> | ||
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| #include "qgssymbollayerutils.h" | ||
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| QDomElement QgsPointLightSettings::writeXml( QDomDocument &doc ) const | ||
| { | ||
| QDomElement elemLight = doc.createElement( QStringLiteral( "point-light" ) ); | ||
| elemLight.setAttribute( QStringLiteral( "x" ), mPosition.x() ); | ||
| elemLight.setAttribute( QStringLiteral( "y" ), mPosition.y() ); | ||
| elemLight.setAttribute( QStringLiteral( "z" ), mPosition.z() ); | ||
| elemLight.setAttribute( QStringLiteral( "color" ), QgsSymbolLayerUtils::encodeColor( mColor ) ); | ||
| elemLight.setAttribute( QStringLiteral( "intensity" ), mIntensity ); | ||
| elemLight.setAttribute( QStringLiteral( "attenuation-0" ), mConstantAttenuation ); | ||
| elemLight.setAttribute( QStringLiteral( "attenuation-1" ), mLinearAttenuation ); | ||
| elemLight.setAttribute( QStringLiteral( "attenuation-2" ), mQuadraticAttenuation ); | ||
| return elemLight; | ||
| } | ||
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| void QgsPointLightSettings::readXml( const QDomElement &elem ) | ||
| { | ||
| mPosition.set( elem.attribute( QStringLiteral( "x" ) ).toDouble(), | ||
| elem.attribute( QStringLiteral( "y" ) ).toDouble(), | ||
| elem.attribute( QStringLiteral( "z" ) ).toDouble() ); | ||
| mColor = QgsSymbolLayerUtils::decodeColor( elem.attribute( QStringLiteral( "color" ) ) ); | ||
| mIntensity = elem.attribute( QStringLiteral( "intensity" ) ).toFloat(); | ||
| mConstantAttenuation = elem.attribute( QStringLiteral( "attenuation-0" ) ).toDouble(); | ||
| mLinearAttenuation = elem.attribute( QStringLiteral( "attenuation-1" ) ).toDouble(); | ||
| mQuadraticAttenuation = elem.attribute( QStringLiteral( "attenuation-2" ) ).toDouble(); | ||
| } | ||
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| bool QgsPointLightSettings::operator==( const QgsPointLightSettings &other ) | ||
| { | ||
| return mPosition == other.mPosition && mColor == other.mColor && mIntensity == other.mIntensity && | ||
| mConstantAttenuation == other.mConstantAttenuation && mLinearAttenuation == other.mLinearAttenuation && | ||
| mQuadraticAttenuation == other.mQuadraticAttenuation; | ||
| } |
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| #ifndef QGSPOINTLIGHTSETTINGS_H | ||
| #define QGSPOINTLIGHTSETTINGS_H | ||
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| #include "qgsvector3d.h" | ||
| #include <QColor> | ||
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| class QDomDocument; | ||
| class QDomElement; | ||
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| /** | ||
| * \ingroup 3d | ||
| * Definition of a point light in a 3D map scene | ||
| * \since QGIS 3.6 | ||
| */ | ||
| class QgsPointLightSettings | ||
| { | ||
| public: | ||
| QgsPointLightSettings() = default; | ||
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| //! Returns position of the light (in 3D world coordinates) | ||
| QgsVector3D position() const { return mPosition; } | ||
| //! Sets position of the light (in 3D world coordinates) | ||
| void setPosition( const QgsVector3D &pos ) { mPosition = pos; } | ||
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| //! Returns color of the light | ||
| QColor color() const { return mColor; } | ||
| //! Sets color of the light | ||
| void setColor( const QColor &c ) { mColor = c; } | ||
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| //! Returns intensity of the light | ||
| float intensity() const { return mIntensity; } | ||
| //! Sets intensity of the light | ||
| void setIntensity( float intensity ) { mIntensity = intensity; } | ||
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| float constantAttenuation() const { return mConstantAttenuation; } | ||
| void setConstantAttenuation( float value ) { mConstantAttenuation = value; } | ||
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| float linearAttenuation() const { return mLinearAttenuation; } | ||
| void setLinearAttenuation( float value ) { mLinearAttenuation = value; } | ||
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| float quadraticAttenuation() const { return mQuadraticAttenuation; } | ||
| void setQuadraticAttenuation( float value ) { mQuadraticAttenuation = value; } | ||
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| //! Writes configuration to a new DOM element and returns it | ||
| QDomElement writeXml( QDomDocument &doc ) const; | ||
| //! Reads configuration from a DOM element previously written using writeXml() | ||
| void readXml( const QDomElement &elem ); | ||
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| bool operator==( const QgsPointLightSettings &other ); | ||
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| private: | ||
| QgsVector3D mPosition; | ||
| QColor mColor = Qt::white; | ||
| float mIntensity = 0.5; | ||
| float mConstantAttenuation = 1.0f; | ||
| float mLinearAttenuation = 0.0f; | ||
| float mQuadraticAttenuation = 0.0f; | ||
| }; | ||
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| #endif // QGSPOINTLIGHTSETTINGS_H |
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