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#include <line2d.h>
Public Member Functions  
GfLine2d ()  
The default constructor leaves line parameters undefined. More...  
GfLine2d (const GfVec2d &p0, const GfVec2d &dir)  
Construct a line from a point and a direction. More...  
double  Set (const GfVec2d &p0, const GfVec2d &dir) 
GfVec2d  GetPoint (double t) const 
const GfVec2d &  GetDirection () const 
Return the normalized direction of the line. More...  
GF_API GfVec2d  FindClosestPoint (const GfVec2d &point, double *t=NULL) const 
bool  operator== (const GfLine2d &l) const 
bool  operator!= (const GfLine2d &r) const 
Friends  
GF_API friend bool  GfFindClosestPoints (const GfLine2d &, const GfLine2d &, GfVec2d *, GfVec2d *, double *, double *) 
Basic type: 2D line
This class represents a twodimensional line in space. Lines are constructed from a point, p0
, and a direction, dir. The direction is normalized in the constructor.
The line is kept in a parametric represention, p = p0 + t * dir.

inline 
Returns the point on the line that is closest to point
. If t
is not NULL
, it will be set to the parametric distance along the line of the returned point.

inline 

inline 

friend 
Computes the closets points between two lines.
The two points are returned in p1
and p2
. The parametric distance of each point on the lines is returned in t1
and t2
.
This returns false
if the lines were close enough to parallel that no points could be computed; in this case, the other return values are undefined.