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Added ViewPoint support into NodeVistor/CullStack/CullVisitor/LOD/PagedLOD etc to facilate

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management of LOD settings for RTT cameras.
This commit is contained in:
Robert Osfield
2006-12-15 17:27:18 +00:00
parent d88b996df1
commit 982a4db9e2
13 changed files with 116 additions and 79 deletions
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49
src/osgUtil/CullVisitor.cpp
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@@ -153,11 +153,14 @@ float CullVisitor::getDistanceToEyePoint(const Vec3& pos, bool withLODScale) con
else return (pos-getEyeLocal()).length();
}
float CullVisitor::getDistanceToViewPoint(const Vec3& pos, bool withLODScale) const
{
if (withLODScale) return (pos-getViewPointLocal()).length()*getLODScale();
else return (pos-getViewPointLocal()).length();
}
inline CullVisitor::value_type distance(const osg::Vec3& coord,const osg::Matrix& matrix)
{
//std::cout << "distance("<<coord<<", "<<matrix<<")"<<std::endl;
return -((CullVisitor::value_type)coord[0]*(CullVisitor::value_type)matrix(0,2)+(CullVisitor::value_type)coord[1]*(CullVisitor::value_type)matrix(1,2)+(CullVisitor::value_type)coord[2]*(CullVisitor::value_type)matrix(2,2)+matrix(3,2));
}
@@ -1079,23 +1082,45 @@ void CullVisitor::apply(osg::Camera& camera)
RefMatrix& originalModelView = getModelViewMatrix();
osg::RefMatrix* projection = 0;
osg::RefMatrix* modelview = 0;
if (camera.getReferenceFrame()==osg::Transform::ABSOLUTE_RF)
{
pushProjectionMatrix(createOrReuseMatrix(camera.getProjectionMatrix()));
pushModelViewMatrix(createOrReuseMatrix(camera.getViewMatrix()));
projection = createOrReuseMatrix(camera.getProjectionMatrix());
modelview = createOrReuseMatrix(camera.getViewMatrix());
}
else if (camera.getTransformOrder()==osg::Camera::POST_MULTIPLY)
{
pushProjectionMatrix(createOrReuseMatrix(getProjectionMatrix()*camera.getProjectionMatrix()));
pushModelViewMatrix(createOrReuseMatrix(getModelViewMatrix()*camera.getViewMatrix()));
projection = createOrReuseMatrix(getProjectionMatrix()*camera.getProjectionMatrix());
modelview = createOrReuseMatrix(getModelViewMatrix()*camera.getViewMatrix());
}
else // pre multiply
{
pushProjectionMatrix(createOrReuseMatrix(camera.getProjectionMatrix()*getProjectionMatrix()));
pushModelViewMatrix(createOrReuseMatrix(camera.getViewMatrix()*getModelViewMatrix()));
projection = createOrReuseMatrix(camera.getProjectionMatrix()*getProjectionMatrix());
modelview = createOrReuseMatrix(camera.getViewMatrix()*getModelViewMatrix());
}
bool localReferenceViewPoint = true;
if (localReferenceViewPoint)
{
// put the reference view point into the new camera eye coordinates
osg::Vec3 referenceViewPoint = getReferenceViewPoint();
if (originalModelView.valid())
{
osg::Matrix matrix;
matrix.invert(originalModelView); // note should this be view.getCamera()->getViewMatrix() ??
matrix.postMult(*modelview);
referenceViewPoint = referenceViewPoint * matrix;
}
pushReferenceViewPoint(referenceViewPoint);
}
pushProjectionMatrix(projection);
pushModelViewMatrix(modelview);
if (camera.getRenderOrder()==osg::Camera::NESTED_RENDER)
{
handle_cull_callbacks_and_traverse(camera);
@@ -1213,6 +1238,12 @@ void CullVisitor::apply(osg::Camera& camera)
}
if (localReferenceViewPoint)
{
// restore the previous reference view point
popReferenceViewPoint();
}
// restore the previous model view matrix.
popModelViewMatrix();