DYT/Tool/OpenSceneGraph-3.6.5/include/osgEarth/TextSymbolizer

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/* -*-c++-*- */
/* osgEarth - Geospatial SDK for OpenSceneGraph
* Copyright 2020 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#ifndef OSGEARTHFEATURES_TEXT_SYMBOLIZER_H
#define OSGEARTHFEATURES_TEXT_SYMBOLIZER_H 1
#include <osgEarth/Common>
#include <osgEarth/TextSymbol>
#include <osgText/Text>
#include <osg/BoundingBox>
namespace osgEarth
{
class Feature;
}
namespace osgEarth { namespace Util
{
class FilterContext;
/**
* Applies the TextSymbol to a Text object.
*/
class OSGEARTH_EXPORT TextSymbolizer
{
public:
//! Construct a new symbolizer
TextSymbolizer(const TextSymbol* symbol);
//! Translate the symbol's encoding to an OSG enum
osgText::String::Encoding getEncoding() const;
//! Apply this symbol to a text object
void apply(osgText::Text* text) const;
//! Apply this symbol to a text object, using the optional
//! feature/context to evaluate expression fields. The optional
//! bounding box can be used for alignment support.
void apply(
osgText::Text* text,
Feature* feature,
const FilterContext* context,
const osg::BoundingBox* box) const;
protected:
osg::ref_ptr<const TextSymbol> _symbol;
};
} }
#endif // OSGEARTHFEATURES_TEXT_SYMBOLIZER_H