FGFS-4.1/OpenSceneGraph
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Added osgUtil::Intersector::PrecisionHint member and set it's default to USE_DOUBLE_COMPUTATIONS, and implemented support for use double or float maths internally in LineSegmentIntersector and RayIntersector classes

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This commit is contained in:
Robert Osfield
2013-11-07 12:35:34 +00:00
parent fef39b6215
commit 7a2900e238
3 changed files with 85 additions and 39 deletions
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17
include/osgUtil/IntersectionVisitor
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@@ -53,7 +53,8 @@ class Intersector : public osg::Referenced
Intersector(CoordinateFrame cf=MODEL, IntersectionLimit il=NO_LIMIT):
_coordinateFrame(cf),
_intersectionLimit(il),
_disabledCount(0) {}
_disabledCount(0),
_precisionHint(USE_DOUBLE_CALCULATIONS) {}
void setCoordinateFrame(CoordinateFrame cf) { _coordinateFrame = cf; }
@@ -84,11 +85,25 @@ class Intersector : public osg::Referenced
inline bool reachedLimit() { return _intersectionLimit == LIMIT_ONE && containsIntersections(); }
/** Hint to precision used in the internal intersections calculations.*/
enum PrecisionHint
{
USE_DOUBLE_CALCULATIONS,
USE_FLOAT_CALCULATIONS
};
/** Set the hint to what precision to use in the intersections calculations.*/
void setPrecisionHint(PrecisionHint hint) { _precisionHint = hint; }
/** Get the hint to what precision should be used in the intersections calculations.*/
PrecisionHint getPrecisionHint() const { return _precisionHint; }
protected:
CoordinateFrame _coordinateFrame;
IntersectionLimit _intersectionLimit;
unsigned int _disabledCount;
PrecisionHint _precisionHint;
};