FGFS-4.1/OpenSceneGraph
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Added occluder hole test code into the osgoccluder demo. The code works,

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but I've commented it out right now as the Geode physically representing
the occluder doesn't yet have a hole in it - just a cosmetic thing.
This commit is contained in:
Robert Osfield 2002-06-14 14:50:31 +00:00
parent 73ec80843f
commit 7adb75c572
1 changed files with 21 additions and 3 deletions
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24
src/Demos/osgoccluder/osgoccluder.cpp
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@ -51,6 +51,9 @@ void write_usage(std::ostream& out,const std::string& name)
out << std::endl;
}
osg::Node* createOccludersAroundModel(osg::Node* model)
{
osg::Group* scene = osgNew osg::Group;
@ -63,14 +66,17 @@ osg::Node* createOccludersAroundModel(osg::Node* model)
osg::OccluderNode* occluderNode = osgNew osg::OccluderNode;
// get the bounding volume of the model.
const osg::BoundingSphere& bs = model->getBound();
const osg::BoundingSphere bs = model->getBound();
// create a bounding box around the sphere.
osg::BoundingBox bb;
bb.expandBy(bs);
// create the convex planer occluder
osg::ConvexPlanerOccluder* cpo = osgNew osg::ConvexPlanerOccluder;
// attach it to the occluder node.
occluderNode->setOccluder(cpo);
// set the occluder up for the front face of the bounding box.
osg::ConvexPlanerPolygon& occluder = cpo->getOccluder();
@ -79,7 +85,19 @@ osg::Node* createOccludersAroundModel(osg::Node* model)
occluder.add(osg::Vec3(bb.xMax(),bb.yMin(),bb.zMax()));
occluder.add(osg::Vec3(bb.xMin(),bb.yMin(),bb.zMax()));
occluderNode->setOccluder(cpo);
//
// // create a hole in the occluder.
// osg::Vec3 center((bb.xMin()+bb.xMax())*0.5f,bb.yMin(),(bb.zMin()+bb.zMax())*0.5f);
// float dx = (bb.xMax()-bb.xMin())*0.25f;
// float dz = (bb.zMax()-bb.zMin())*0.25f;
//
//
// cpo->getHoleList().push_back();
// osg::ConvexPlanerPolygon& hole = cpo->getHoleList().back();
// hole.add(center+osg::Vec3(-dx,0.0,-dz));
// hole.add(center+osg::Vec3(dx,0.0,-dz));
// hole.add(center+osg::Vec3(dx,0.0,dz));
// hole.add(center+osg::Vec3(-dx,0.0,dz));
// create a drawable for occluder.