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Fix another convex hull clipping issue and restore z-clipping

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This commit is contained in:
AnyOldName3 2018-08-21 14:00:29 +01:00
parent 3ce96997d1
commit 15e820825f
1 changed files with 28 additions and 6 deletions
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34
components/sceneutil/mwshadowtechnique.cpp
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@ -2079,7 +2079,7 @@ struct ConvexHull
center /= double(intersections.size());
typedef std::map<double, osg::Vec3d> VertexMap;
typedef std::map<double, std::list<std::pair<osg::Vec3d, double>>> VertexMap;
VertexMap vertexMap;
for(Vertices::iterator itr = intersections.begin();
itr != intersections.end();
@ -2090,16 +2090,38 @@ struct ConvexHull
double v = dv * up;
double angle = atan2(h,v);
// OSG_NOTICE<<"angle = "<<osg::RadiansToDegrees(angle)<<", h="<<h<<" v= "<<v<<std::endl;
vertexMap[angle] = *itr;
// We need to make sure all intersections are added to the list in the right order, even if they're so far away that their angles work out the same.
double sortValue;
if (angle < osg::DegreesToRadians(-135.0) || angle > osg::DegreesToRadians(135.0))
sortValue = -h;
else if (angle < osg::DegreesToRadians(-45.0))
sortValue = v;
else if (angle < osg::DegreesToRadians(45.0))
sortValue = h;
else
sortValue = -v;
if (vertexMap.count(angle))
{
auto listItr = vertexMap[angle].begin();
while (listItr != vertexMap[angle].end() && listItr->second < sortValue)
++listItr;
vertexMap[angle].insert(listItr, std::make_pair(*itr, sortValue));
}
else
vertexMap[angle].push_back(std::make_pair(*itr, sortValue));
}
osg::Vec3d previous_v = vertexMap.rbegin()->second;
osg::Vec3d previous_v = vertexMap.rbegin()->second.back().first;
for(VertexMap::iterator itr = vertexMap.begin();
itr != vertexMap.end();
++itr)
{
_edges.push_back(Edge(previous_v, itr->second));
previous_v = itr->second;
for (auto vertex : itr->second)
{
_edges.push_back(Edge(previous_v, vertex.first));
previous_v = vertex.first;
}
}
// OSG_NOTICE<<" after clip("<<plane<<") edges.size()="<<_edges.size()<<std::endl;
@ -2523,7 +2545,7 @@ bool MWShadowTechnique::adjustPerspectiveShadowMapCameraSettings(osgUtil::Render
#endif
#endif
#if 0
#if 1
convexHull.clip(osg::Plane(0.0,0.0,1.0,-rli.min_z));
convexHull.clip(osg::Plane(0.0,0.0,-1.0,rli.max_z));
#elif 0