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From Lars Nilsson, "Attached is a small program doing intersection calculations, both with and without KdTree. The geometry is a TRIANGLE_STRIP consisting of five vertices, all with the same rather high Z-value. If the intersection calculation uses KdTree, it fails. When I changed osg::Vec3 to osg::Vec3d in a few places in osg::KdTree it finds the correct intersection point."

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From Robert Osfield, I didn't merge the change of parameter type of IntersectKdTree::intersect() as the internal maths is all done in Vec3s. Keeping Vec3 here hasn't effected the test results.
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Robert Osfield
2010-01-26 13:05:05 +00:00
parent 5e9aedc8e1
commit 144d3e7af3
2 changed files with 3 additions and 3 deletions
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2
include/osg/KdTree
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@@ -83,7 +83,7 @@ class OSG_EXPORT KdTree : public osg::Shape
typedef std::vector<LineSegmentIntersection> LineSegmentIntersections;
/** compute the intersection of a line segment and the kdtree, return true if an intersection has been found.*/
virtual bool intersect(const osg::Vec3& start, const osg::Vec3& end, LineSegmentIntersections& intersections) const;
virtual bool intersect(const osg::Vec3d& start, const osg::Vec3d& end, LineSegmentIntersections& intersections) const;
typedef int value_type;