FGFS-4.1/OpenSceneGraph
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Added support for chunking the point data clouds into 10,000 point chunks to

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better optimize the VBO and AGP needs.
This commit is contained in:
Robert Osfield
2003-06-29 21:53:38 +00:00
parent b5442ac835
commit 1d73bb8bec
1 changed files with 37 additions and 11 deletions
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48
src/osgPlugins/3dc/ReaderWriter3DC.cpp
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@@ -54,17 +54,21 @@ class ReaderWriter3DC : public osgDB::ReaderWriter
std::cout << "num="<<num<<std::endl;
unsigned int targetNumVertices = 10000;
osg::Geode* geode = new osg::Geode;
osg::Geometry* geometry = new osg::Geometry;
osg::Vec3Array* vertices = new osg::Vec3Array;
osg::Vec3Array* normals = new osg::Vec3Array;
osg::UByte4Array* colours = new osg::UByte4Array;
//osg::Vec4Array* colours = new osg::Vec4Array;
vertices->reserve(num);
normals->reserve(num);
colours->reserve(num);
vertices->reserve(targetNumVertices);
normals->reserve(targetNumVertices);
colours->reserve(targetNumVertices);
fin.close();
@@ -91,21 +95,44 @@ class ReaderWriter3DC : public osgDB::ReaderWriter
if (a)
{
{
if (vertices->size()>=targetNumVertices)
{
// finishing setting up the current geometry and add it to the geode.
geometry->setUseDisplayList(false);
geometry->setVertexArray(vertices);
geometry->setNormalArray(normals);
geometry->setNormalBinding(osg::Geometry::BIND_PER_VERTEX);
geometry->setColorArray(colours);
geometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
geometry->addPrimitiveSet(new osg::DrawArrays(GL_POINTS,0,vertices->size()));
geode->addDrawable(geometry);
// allocate a new geometry
geometry = new osg::Geometry;
vertices = new osg::Vec3Array;
normals = new osg::Vec3Array;
colours = new osg::UByte4Array;
vertices->reserve(targetNumVertices);
normals->reserve(targetNumVertices);
colours->reserve(targetNumVertices);
}
vertices->push_back(pos);
normals->push_back(normal);
colours->push_back(osg::UByte4(r,g,b,255));
//colours->push_back(osg::Vec4((float)r/255.0f,(float)g/255.0f,(float)b/255.0f,1.0f));
}
}
//std::cout << "["<<std::endl;
//std::cout <<line<<std::endl;
//std::cout <<"]"<<std::endl;
}
geometry->setUseDisplayList(false);
geometry->setVertexArray(vertices);
geometry->setNormalArray(normals);
@@ -114,7 +141,6 @@ class ReaderWriter3DC : public osgDB::ReaderWriter
geometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
geometry->addPrimitiveSet(new osg::DrawArrays(GL_POINTS,0,vertices->size()));
osg::Geode* geode = new osg::Geode;
geode->addDrawable(geometry);
return geode;