FGFS-4.1/OpenSceneGraph
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Added new Transform::ReferenceType enum ABSOLUTE_RF_INHERIT_VIEWPOINT to support

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internal RTT cameras that wish to use the main cameras view/eye point for LOD and other
distance based tests.
This commit is contained in:
Robert Osfield
2007-02-07 16:32:14 +00:00
parent c2e79a2d89
commit c52207b637
11 changed files with 104 additions and 64 deletions
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41
src/osg/CullStack.cpp
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@@ -13,6 +13,9 @@
#include <osg/CullStack>
#include <osg/Timer>
#include <osg/Notify>
#include <osg/io_utils>
using namespace osg;
CullStack::CullStack()
@@ -187,8 +190,10 @@ void CullStack::popProjectionMatrix()
popCullingSet();
}
void CullStack::pushModelViewMatrix(RefMatrix* matrix)
void CullStack::pushModelViewMatrix(RefMatrix* matrix, Transform::ReferenceFrame referenceFrame)
{
osg::RefMatrix* originalModelView = _modelviewStack.empty() ? 0 : _modelviewStack.back().get();
_modelviewStack.push_back(matrix);
pushCullingSet();
@@ -196,8 +201,37 @@ void CullStack::pushModelViewMatrix(RefMatrix* matrix)
osg::Matrix inv;
inv.invert(*matrix);
_eyePointStack.push_back(inv.getTrans());
_viewPointStack.push_back(getReferenceViewPoint() * inv);
switch(referenceFrame)
{
case(Transform::RELATIVE_RF):
_eyePointStack.push_back(inv.getTrans());
_referenceViewPoints.push_back(getReferenceViewPoint());
_viewPointStack.push_back(getReferenceViewPoint() * inv);
break;
case(Transform::ABSOLUTE_RF):
_eyePointStack.push_back(inv.getTrans());
_referenceViewPoints.push_back(osg::Vec3(0.0,0.0,0.0));
_viewPointStack.push_back(_eyePointStack.back());
break;
case(Transform::ABSOLUTE_RF_INHERIT_VIEWPOINT):
{
_eyePointStack.push_back(inv.getTrans());
osg::Vec3 referenceViewPoint = getReferenceViewPoint();
if (originalModelView)
{
osg::Matrix viewPointTransformMatrix;
viewPointTransformMatrix.invert(*originalModelView);
viewPointTransformMatrix.postMult(*matrix);
referenceViewPoint = referenceViewPoint * viewPointTransformMatrix;
}
_referenceViewPoints.push_back(referenceViewPoint);
_viewPointStack.push_back(getReferenceViewPoint() * inv);
break;
}
}
osg::Vec3 lookVector = getLookVectorLocal();
@@ -215,6 +249,7 @@ void CullStack::popModelViewMatrix()
_modelviewStack.pop_back();
_eyePointStack.pop_back();
_referenceViewPoints.pop_back();
_viewPointStack.pop_back();
popCullingSet();