FGFS-4.1/OpenSceneGraph
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Added support for occluders occluding other occluders, which helps reduce

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the number of occluder that will be used in cull traversal to only the
ones that will be effective. Note. Holes in occluders arn't handled in
this occluder occlusion test, will implement this later.
This commit is contained in:
Robert Osfield
2002-06-18 22:35:48 +00:00
parent aa58ecae2f
commit 5e85cd59ab
6 changed files with 99 additions and 31 deletions
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20
include/osg/Polytope
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@@ -18,16 +18,18 @@ class SG_EXPORT Polytope
public:
typedef unsigned int ClippingMask;
typedef std::vector<Plane> PlaneList;
typedef fast_back_stack<ClippingMask> MaskStack;
typedef unsigned int ClippingMask;
typedef std::vector<Plane> PlaneList;
typedef std::vector<Vec3> VertexList;
typedef fast_back_stack<ClippingMask> MaskStack;
inline Polytope() {setupMask();}
inline Polytope(const Polytope& cv) :
_maskStack(cv._maskStack),
_resultMask(cv._resultMask),
_planeList(cv._planeList) {}
_planeList(cv._planeList),
_referenceVertexList(cv._referenceVertexList) {}
inline Polytope(const PlaneList& pl) : _planeList(pl) {setupMask();}
@@ -41,6 +43,7 @@ class SG_EXPORT Polytope
_maskStack = cv._maskStack;
_resultMask = cv._resultMask;
_planeList = cv._planeList;
_referenceVertexList = cv._referenceVertexList;
return *this;
}
@@ -77,6 +80,14 @@ class SG_EXPORT Polytope
inline const PlaneList& getPlaneList() const { return _planeList; }
inline void setReferenceVertexList(VertexList& vertices) { _referenceVertexList=vertices; }
inline VertexList& getReferenceVertexList() { return _referenceVertexList; }
inline const VertexList& getReferenceVertexList() const { return _referenceVertexList; }
inline void setupMask()
{
_resultMask = 0;
@@ -312,6 +323,7 @@ class SG_EXPORT Polytope
MaskStack _maskStack;
ClippingMask _resultMask;
PlaneList _planeList;
VertexList _referenceVertexList;
};