111 lines
3.7 KiB
Plaintext
111 lines
3.7 KiB
Plaintext
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/* -*-c+
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+-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2020 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef OSGEARTHSYMBOLOGY_ICON_SYMBOL_H
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#define OSGEARTHSYMBOLOGY_ICON_SYMBOL_H 1
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#include <osgEarth/Common>
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#include <osgEarth/InstanceSymbol>
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namespace osgEarth
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{
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class Style;
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namespace Util {
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class InstanceResource;
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}
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/**
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* Represents a 2D icon for instancing
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*/
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class OSGEARTH_EXPORT IconSymbol : public InstanceSymbol
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{
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public:
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// note: these are similar to the values in osgText::Text::AlignmentType
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enum Alignment {
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ALIGN_LEFT_TOP,
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ALIGN_LEFT_CENTER,
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ALIGN_LEFT_BOTTOM,
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ALIGN_CENTER_TOP,
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ALIGN_CENTER_CENTER,
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ALIGN_CENTER_BOTTOM,
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ALIGN_RIGHT_TOP,
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ALIGN_RIGHT_CENTER,
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ALIGN_RIGHT_BOTTOM,
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};
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public:
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META_Object(osgEarth, IconSymbol);
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IconSymbol(const IconSymbol& rhs,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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IconSymbol( const Config& conf =Config() );
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/** dtor */
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virtual ~IconSymbol() { }
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/** Alignment of the marker relative to center pixels */
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optional<Alignment>& alignment() { return _alignment; }
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const optional<Alignment>& alignment() const { return _alignment; }
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/** Heading. Semantically this differs from an model's heading */
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optional<NumericExpression>& heading() { return _heading; }
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const optional<NumericExpression>& heading() const { return _heading; }
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/** Decluttering */
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optional<bool>& declutter() { return _declutter; }
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const optional<bool>& declutter() const { return _declutter; }
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/** Whether to enable occlusion culling on the icon, if applicable */
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optional<bool>& occlusionCull() { return _occlusionCull; }
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const optional<bool>& occlusionCull() const { return _occlusionCull; }
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/** The camera altitude at which to start occlusion culling the icon */
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optional<double>& occlusionCullAltitude() { return _occlusionCullAltitude; }
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const optional<double>& occlusionCullAltitude() const { return _occlusionCullAltitude; }
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public: // non-serialized properties (for programmatic use only)
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/** Explicit image to use for 2D icon placemet */
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void setImage( osg::Image* image ) { _image = image; }
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osg::Image* getImage( unsigned maxSize =INT_MAX ) const;
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public:
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virtual Config getConfig() const;
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virtual void mergeConfig( const Config& conf );
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static void parseSLD(const Config& c, class Style& style);
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public: // InstanceSymbol
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virtual InstanceResource* createResource() const;
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protected:
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optional<Alignment> _alignment;
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optional<NumericExpression> _heading;
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optional<bool> _declutter;
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mutable osg::ref_ptr<osg::Image> _image;
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optional<bool> _occlusionCull;
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optional<double> _occlusionCullAltitude;
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};
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} // namespace osgEarth
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#endif
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