/////////////////////////////////////////////////////////////////

/// @file Cones.cpp

/// @author Chris L Baker (clb) <chris@chimail.net>

/// @date 2015.06.30

/// @brief Provide a simple interface to draw a cone

///

/// @attention Copyright (C) 2015

/// @attention All rights reserved

/////////////////////////////////////////////////////////////////

#include "Cones.h"

#include <osg/ShapeDrawable>

#include <osg/Material>

#include <osg/Geode>

namespace d3

{

/////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////

osg::ref_ptr<osg::Node> get(const ConeVec_t& cones)

{

osg::ref_ptr<osg::Group> pAddToThisGroup(new osg::Group());

for ( const auto& cc : cones )

{

const osg::Vec3d& center( cc.center );

const double& radius( cc.radius );

const double& height( cc.height );

// Create a cone between the two points with the given radius

osg::ref_ptr<osg::Cone> cone( new osg::Cone(center, radius, height) );

// A geode to hold the cone

osg::ref_ptr<osg::ShapeDrawable> coneDrawable( new osg::ShapeDrawable(cone) );

coneDrawable->setColor(cc.color);

osg::ref_ptr<osg::Geode> geode( new osg::Geode() );

geode->addDrawable(coneDrawable);

// Set the color of the cone that extends between the two points.

geode->getOrCreateStateSet()->setMode(GL_BLEND, osg::StateAttribute::ON);

geode->getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);

pAddToThisGroup->addChild(geode);

}

return pAddToThisGroup;

}

} // namespace d3