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Revert r5384 partly. Didn't compile.

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git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@5386 dfc29bdd-3216-0410-991c-e03cc46cb475
This commit is contained in:
cutealien 2017-03-30 22:04:22 +00:00
parent ee1baae711
commit bd9ff4940b
1 changed files with 0 additions and 34 deletions
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34
include/line2d.h
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@ -111,40 +111,6 @@ class line2d
return (f32)a.dotProduct(b) < irr::core::ROUNDING_ERROR_f32; return (f32)a.dotProduct(b) < irr::core::ROUNDING_ERROR_f32;
} }
/*! returns a intersection point of 2 lines (if lines are not parallel). Behaviour
undefined if lines are parallel or coincident.*/
vector2d<T> fastLinesIntersection( const line2d<T>& line)
{
const f32 commonDenominator = (f32)((l.end.Y - l.start.Y)*(end.X - start.X) -
(l.end.X - l.start.X)*(end.Y - start.Y));
const f32 numeratorA = (f32)((l.end.X - l.start.X)*(start.Y - l.start.Y) -
(l.end.Y - l.start.Y)*(start.X - l.start.X));
const f32 numeratorB = (f32)((end.X - start.X)*(start.Y - l.start.Y) -
(end.Y - start.Y)*(start.X - l.start.X));
const f32 uA = numeratorA / commonDenominator;
const f32 uB = numeratorB / commonDenominator;
// Calculate the intersection point.
return vector2d<T> (
(T)(start.X + uA * (end.X - start.X)),
(T)(start.Y + uA * (end.Y - start.Y))
);
}
/*! Check if this line intersect a segment. The eventual intersection point is returned in "out".*/
bool lineIntersectSegment( const line2d<T>& segment, vector2d<T> & out) const
{
if (nearlyParallel( segment))
return false;
out = fastLinesIntersection( segment);
return segment.start.onSegment( intersection, segment.end);
}
//! Tests if this line intersects with another line. //! Tests if this line intersects with another line.
/** \param l: Other line to test intersection with. /** \param l: Other line to test intersection with.
\param checkOnlySegments: Default is to check intersection between the begin and endpoints. \param checkOnlySegments: Default is to check intersection between the begin and endpoints.