libosgearth-dev 2.4.0+dfsg-6 / usr / include / osgEarthAnnotation / EllipseNode

/* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2008-2013 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 OSGEARTH_ANNOTATION_ELLIPSE_NODE_H
#define OSGEARTH_ANNOTATION_ELLIPSE_NODE_H 1

#include <osgEarthAnnotation/LocalizedNode>
#include <osgEarthSymbology/Style>
#include <osgEarth/Units>
#include <osgEarth/MapNode>

namespace osgEarth { namespace Annotation
{	
    using namespace osgEarth;
    using namespace osgEarth::Symbology;

    /** 
     * Renders an ellipse that can drape on a MapNode terrain.    
     */
    class OSGEARTHANNO_EXPORT EllipseNode : public LocalizedNode
    {
    public:
        META_AnnotationNode( osgEarthAnnotation, EllipseNode );

        /**
         * Constructs a new ellipse annotation.
         *
         * @param mapNode     Map on which the annotation will appear
         * @param position    Location of the annotation, in map coordinates
         * @param radiusMajor Length of 1/2 the major axis of the ellipse
         * @param radiusMinor Length of 1/2 the minor axis of the ellipse
         * @param rotation    Rotation angle of the ellipse
         * @param style       Style defining how the annotation will look
         * @param arcStart    Optional start of arc (default to 0.0 degrees)
         * @param arcStop     Optional end of arc (default to 360.0 degrees)
         * @param pie         Optionally make pie shape instead of arc
         */
        EllipseNode( 
            MapNode*                mapNode,
            const GeoPoint&         position,
            const Distance&         radiusMajor,
            const Distance&         radiusMinor,
            const Angle&            rotationAngle,
            const Style&            style,
            const Angle&            arcStart = Angle(0.0, Units::DEGREES),
            const Angle&            arcEnd = Angle(360.0, Units::DEGREES),
            const bool              pie = false);

        virtual ~EllipseNode() { }

        /**
         * Gets the major radius
         */
        const Distance& getRadiusMajor() const;

        /**
         * Gets the minor radius
         */
        const Distance& getRadiusMinor() const;

        /**
         * Sets the major radius
         */
        void setRadiusMajor( const Distance& radiusMajor );

        /**
         * Sets the minor radius
         */
        void setRadiusMinor( const Distance& radiusMinor );

        /**
         * Sets the major and minor radii
         */
        void setRadii( const Distance& radiusMajor, const Distance& radiusMinor );

        /*
         * Gets the rotation angle
         */
        const Angle& getRotationAngle() const;

        /**
         * Sets the rotation angle
         */
        void setRotationAngle(const Angle& rotationAngle);

        /**
         * Gets the number of segments
         */
        unsigned int getNumSegments() const;

        /**
         * Sets the number of segments
         */
        void setNumSegments(unsigned int numSegments );

        /**
         * Gets the style
         */
        const Style& getStyle() const;

        /**
         * Sets the style
         */
        void setStyle( const Style& style );

        /**
         * Gets the start degrees of this (arc) circle
         */
        const Angle& getArcStart(void) const;

        /**
         * Sets the start degrees of this (arc) circle
         */
        void setArcStart(const Angle& arcStart);

        /**
         * Gets the end degrees of this (arc) circle
         */
        const Angle& getArcEnd(void) const;

        /**
         * Sets the end degrees of this (arc) circle
         */
        void setArcEnd(const Angle& arcEnd);

        /**
         * Gets the pie flag
         */
        const bool& getPie(void) const;

        /**
         * Sets the pie flag
         */
        void setPie(const bool& pie);

        /**
         * Gets draped property
         */
        bool isDraped() const { return _draped; }

    public:

        EllipseNode(MapNode* mapNode, const Config& conf, const osgDB::Options* dbOptions);
        virtual Config getConfig() const;


    public: // LocalizedNode

        osg::MatrixTransform* getTransform() { return _xform.get(); }


    private:
        EllipseNode() { }
        EllipseNode(const EllipseNode& rhs, const osg::CopyOp& op) { }

        void rebuild();
        
        Style _style;
        bool _draped;
        Angle _rotationAngle;
        Distance _radiusMajor;
        Distance _radiusMinor;
        Angle _arcStart;
        Angle _arcEnd;
        bool  _pie;
        unsigned int _numSegments;
        osg::ref_ptr<osg::MatrixTransform> _xform;
    };

} } // namespace osgEarth::Annotation

#endif // OSGEARTH_ANNOTATION_ELLIPSE_NODE_H