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From Ravi Mathur, "OK I have been away for a looong time, but still occasionally watching from a distance, and saw the bug people have reported about the DepthPartitionNode not handling scaled models properly.

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I believe this is now fixed ... I have attached the new DistanceAccumulator.cpp, along with a modified example file that uses a PositionAttitudeTransform to draw the Earth's orbit around the Sun."
This commit is contained in:
Robert Osfield
2009-04-09 14:25:14 +00:00
parent 38b02a26a9
commit fddaaf0d00
2 changed files with 136 additions and 40 deletions
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74
examples/osgdepthpartition/osgdepthpartition.cpp
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@@ -38,34 +38,88 @@ 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 = new osg::Geode;
earth->setName("earth");
earth->addDrawable(earth_sd);
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("sun");
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));
osg::Group* scene = new osg::Group;
scene->addChild(earth);
scene->addChild(pat);
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*M_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;
}
@@ -102,7 +156,7 @@ int main( int argc, char **argv )
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));
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.