FGFS-4.1/OpenSceneGraph
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Added create angle of 20 degrees to SmoothingVisitor to improve visual quality.

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Added geometry.setUseVertexBufferObjects(true) to geometry set up for improved performance.
Refactored the color set up so that by default it assigns just a single color to the geometry to improve performance.
This commit is contained in:
Robert Osfield
2016-12-12 10:23:50 +00:00
parent 3432f02d5f
commit d6c245a2f3
1 changed files with 18 additions and 3 deletions
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21
src/osgPlugins/OpenCASCADE/ReaderWriterOpenCASCADE.cpp
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@@ -156,14 +156,26 @@ osg::ref_ptr<osg::Geometry> ReaderWritterOpenCASCADE::OCCTKReader::_createGeomet
{
// vector to save vertices
osg::ref_ptr<osg::Vec3Array> vertexList = new osg::Vec3Array();
osg::Array::Binding colorBinding = osg::Array::BIND_OVERALL;
// vector to save _colorTool
osg::ref_ptr<osg::Vec3Array> colorList = new osg::Vec3Array();
if (colorBinding==osg::Array::BIND_OVERALL)
{
colorList->push_back(geomColor);
}
// create one osg primitive set
osg::ref_ptr<osg::DrawElementsUInt> triangleStrip = new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0);
unsigned int noOfTriangles = 0;
osg::ref_ptr<osg::Geometry> geom = new osg::Geometry;
// large vertex datasets work best with VBO.
geom->setUseVertexBufferObjects(true);
if(!shape.IsNull())
{
// clean any previous triangulation
@@ -204,7 +216,10 @@ osg::ref_ptr<osg::Geometry> ReaderWritterOpenCASCADE::OCCTKReader::_createGeomet
vertexList->push_back(osg::Vec3(pt.X(), pt.Y(), pt.Z()));
// populate color list
colorList->push_back(geomColor);
if (colorBinding==osg::Array::BIND_PER_VERTEX)
{
colorList->push_back(geomColor);
}
}
/// now we need to get face indices for triangles
@@ -241,8 +256,7 @@ osg::ref_ptr<osg::Geometry> ReaderWritterOpenCASCADE::OCCTKReader::_createGeomet
geom->setVertexArray(vertexList.get());
geom->setColorArray(colorList.get());
geom->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
geom->setColorArray(colorList.get(), colorBinding);
#ifdef _LOG_DEBUG_
std::cout << "Adding Primitive set" << std::endl;
@@ -344,6 +358,7 @@ osg::ref_ptr<osg::Geode> ReaderWritterOpenCASCADE::OCCTKReader::igesToOSGGeode(c
#endif
osgUtil::SmoothingVisitor sv;
sv.setCreaseAngle(osg::DegreesToRadians(20.0));
_modelGeode->accept(sv);
return _modelGeode;