Hi Robert,
Small build fix for Windows, use osg::PI instead of M_PI.
See http://www.cdash.org/CDashPublic/viewBuildError.php?buildid=18158
Nightly builds rule :-)
J-S
--
______________________________________________________
Jean-Sebastien Guay [email protected]
http://www.cm-labs.com/
http://whitestar02.webhop.org/
/* OpenSceneGraph example, osgdepthpartion.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <osgUtil/UpdateVisitor>
#include <osgDB/ReadFile>
#include <osg/ShapeDrawable>
#include <osg/PositionAttitudeTransform>
#include <osgGA/TrackballManipulator>
#include <osgViewer/Viewer>
#include "DepthPartitionNode.h"
const double r_earth = 6378.137;
const double r_sun = 695990.0;
const double AU = 149697900.0;
osg::Node* createScene()
{
// Create the Earth, in blue
osg::ShapeDrawable *earth_sd = new osg::ShapeDrawable;
osg::Sphere* earth_sphere = new osg::Sphere;
earth_sphere->setName("EarthSphere");
earth_sphere->setRadius(r_earth);
earth_sd->setShape(earth_sphere);
earth_sd->setColor(osg::Vec4(0, 0, 1.0, 1.0));
osg::Geode* earth_geode = new osg::Geode;
earth_geode->setName("EarthGeode");
earth_geode->addDrawable(earth_sd);
// Create the Sun, in yellow
osg::ShapeDrawable *sun_sd = new osg::ShapeDrawable;
osg::Sphere* sun_sphere = new osg::Sphere;
sun_sphere->setName("SunSphere");
sun_sphere->setRadius(r_sun);
sun_sd->setShape(sun_sphere);
sun_sd->setColor(osg::Vec4(1.0, 0.0, 0.0, 1.0));
osg::Geode* sun_geode = new osg::Geode;
sun_geode->setName("SunGeode");
sun_geode->addDrawable(sun_sd);
// Move the sun behind the earth
osg::PositionAttitudeTransform *pat = new osg::PositionAttitudeTransform;
pat->setPosition(osg::Vec3d(0.0, AU, 0.0));
pat->addChild(sun_geode);
osg::Geometry * unitCircle = new osg::Geometry();
{
osg::Vec4Array * colours = new osg::Vec4Array(1);
(*colours)[0] = osg::Vec4d(1.0,1.0,1.0,1.0);
unitCircle->setColorArray(colours);
unitCircle->setColorBinding(osg::Geometry::BIND_OVERALL);
const unsigned int n_points = 1024;
osg::Vec3Array * coords = new osg::Vec3Array(n_points);
const double dx = 2.0*osg::PI/n_points;
double s,c;
for (unsigned int j=0; j<n_points; ++j) {
s = sin(dx*j);
c = cos(dx*j);
(*coords)[j].set(osg::Vec3d(c,s,0.0));
}
unitCircle->setVertexArray(coords);
unitCircle->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
unitCircle->addPrimitiveSet(new
osg::DrawArrays(osg::PrimitiveSet::LINE_LOOP,0,n_points));
}
osg::Geometry *axes = new osg::Geometry;
{
osg::Vec4Array *colours = new osg::Vec4Array(1);
(*colours)[0] = osg::Vec4d(1.0,0.0,0.0,1.0);
axes->setColorArray(colours);
axes->setColorBinding(osg::Geometry::BIND_OVERALL);
osg::Vec3Array *coords = new osg::Vec3Array(6);
(*coords)[0].set(osg::Vec3d(0.0, 0.0, 0.0));
(*coords)[1].set(osg::Vec3d(0.5, 0.0, 0.0));
(*coords)[2].set(osg::Vec3d(0.0, 0.0, 0.0));
(*coords)[3].set(osg::Vec3d(0.0, 0.5, 0.0));
(*coords)[4].set(osg::Vec3d(0.0, 0.0, 0.0));
(*coords)[5].set(osg::Vec3d(0.0, 0.0, 0.5));
axes->setVertexArray(coords);
axes->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
axes->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINES,0,6));
}
// Earth orbit
osg::Geode * earthOrbitGeode = new osg::Geode;
earthOrbitGeode->addDrawable(unitCircle);
earthOrbitGeode->addDrawable(axes);
earthOrbitGeode->setName("EarthOrbitGeode");
osg::PositionAttitudeTransform * earthOrbitPAT = new
osg::PositionAttitudeTransform;
earthOrbitPAT->setScale(osg::Vec3d(AU,AU,AU));
earthOrbitPAT->setPosition(osg::Vec3d(0.0, AU, 0.0));
earthOrbitPAT->addChild(earthOrbitGeode);
earthOrbitPAT->setName("EarthOrbitPAT");
osg::Group* scene = new osg::Group;
scene->setName("SceneGroup");
scene->addChild(earth_geode);
scene->addChild(pat);
scene->addChild(earthOrbitPAT);
return scene;
}
int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// construct the viewer.
osgViewer::Viewer viewer;
bool needToSetHomePosition = false;
// read the scene from the list of file specified commandline args.
osg::ref_ptr<osg::Node> scene = osgDB::readNodeFiles(arguments);
// if one hasn't been loaded create an earth and sun test model.
if (!scene)
{
scene = createScene();
needToSetHomePosition = true;
}
// Create a DepthPartitionNode to manage partitioning of the scene
osg::ref_ptr<DepthPartitionNode> dpn = new DepthPartitionNode;
dpn->addChild(scene.get());
dpn->setActive(true); // Control whether the node analyzes the scene
// pass the loaded scene graph to the viewer.
viewer.setSceneData(dpn.get());
viewer.setCameraManipulator(new osgGA::TrackballManipulator);
if (needToSetHomePosition)
{
viewer.getCameraManipulator()->setHomePosition(osg::Vec3d(0.0,-5.0*r_earth,0.0),osg::Vec3d(0.0,0.0,0.0),osg::Vec3d(0.0,0.0,1.0));
}
// depth partion node is only supports single window/single threaded at
present.
viewer.setThreadingModel(osgViewer::Viewer::SingleThreaded);
return viewer.run();
}
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