CL_LineSegment2 Class Reference
[clanCore Math]

2D line segment - Integer More...

#include <line_segment.h>

Inheritance diagram for CL_LineSegment2:

List of all members.

Public Member Functions
	CL_LineSegment2 ()
	CL_LineSegment2 (const CL_LineSegment2x< int > &copy)
	CL_LineSegment2 (const CL_Vec2< int > &point_p, const CL_Vec2< int > &point_q)
CL_Vec2< int >	get_midpoint () const
	Get the midpoint of this line.
int	point_distance (const CL_Vec2< int > &point)
	Return the distance from a point to a line.
bool	collinear (const CL_LineSegment2x< int > second) const
	Return true if two line segments are collinear. (All points are on the same line.).
bool	intersects (const CL_LineSegment2x< int > second, bool collinear_intersect) const
	Return true if two line segments intersect.
CL_Vec2< int >	get_intersection (const CL_LineSegment2x< int > second, bool &intersect) const
	Return the intersection point of two lines.
int	point_right_of_line (CL_Vec2< int > point) const
	Return [<0, 0, >0] if the Point P is right, on or left of the line trough A,B.
CL_Vec2< int >	normal () const
	Return the normal vector of the line from point A to point B.
CL_LineSegment2x< int > &	clip (const CL_Rectx< int > &rect, bool &clipped)
	Clip this line to a rectangle.
bool	operator== (const CL_LineSegment2x< int > &line) const
	== operator.
bool	operator!= (const CL_LineSegment2x< int > &line) const
	!= operator.
Public Attributes
CL_Vec2< int >	p
	Start point on the line.
CL_Vec2< int >	q

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Detailed Description

2D line segment - Integer

A line segment has a start point and an end point

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Constructor & Destructor Documentation

CL_LineSegment2::CL_LineSegment2 (   )  [inline]

CL_LineSegment2::CL_LineSegment2 (  const CL_LineSegment2x< int > &  copy  )  [inline]

CL_LineSegment2::CL_LineSegment2 (  const CL_Vec2< int > &  point_p, const CL_Vec2< int > &  point_q )  [inline]

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Member Function Documentation

CL_LineSegment2x<int >& CL_LineSegment2x< int >::clip (  const CL_Rectx< int > &  rect, bool &  clipped )  [inherited]

Clip this line to a rectangle. If clipping was not successful, this object is undefined Parameters: rect  = Rectangle to clip to clipped  = On Return: true if the line could be clipped, false if line exists outside the rectangle Returns: reference to this object

bool CL_LineSegment2x< int >::collinear (  const CL_LineSegment2x< int >  second  )  const [inherited]

Return true if two line segments are collinear. (All points are on the same line.). Parameters: second  = The second line to check with Returns: true = They are collinear

CL_Vec2<int > CL_LineSegment2x< int >::get_intersection (  const CL_LineSegment2x< int >  second, bool &  intersect )  const [inherited]

Return the intersection point of two lines. Parameters: second  = Second line. dest_intercept  = On Return: The intercept. If the lines are parallel, this contains this line's first point Returns: true if the lines intersect, false if the lines are parallel

CL_Vec2<int > CL_LineSegment2x< int >::get_midpoint (   )  const [inline, inherited]

Get the midpoint of this line. Returns: The midpoint

bool CL_LineSegment2x< int >::intersects (  const CL_LineSegment2x< int >  second, bool  collinear_intersect )  const [inherited]

Return true if two line segments intersect. Parameters: second  = Second line. collinear_intersect  = true if a collision is reported when all points are on the same line. Returns: true = Intersects

CL_Vec2<int > CL_LineSegment2x< int >::normal (   )  const [inherited]

Return the normal vector of the line from point A to point B. When using CL_Vec2i, the vector is an 8 bit fraction (multiplied by 256) Returns: The normal vector

bool CL_LineSegment2x< int >::operator!= (  const CL_LineSegment2x< int > &  line  )  const [inline, inherited]

!= operator.

bool CL_LineSegment2x< int >::operator== (  const CL_LineSegment2x< int > &  line  )  const [inline, inherited]

== operator.

int CL_LineSegment2x< int >::point_distance (  const CL_Vec2< int > &  point  )  [inherited]

Return the distance from a point to a line. Parameters: point  = The point.

int CL_LineSegment2x< int >::point_right_of_line (  CL_Vec2< int >  point  )  const [inline, inherited]

Return [<0, 0, >0] if the Point P is right, on or left of the line trough A,B. Parameters: point  = The point Returns: Value representing - left (>0), centre (=0), or right (<0)

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Member Data Documentation

CL_Vec2<int > CL_LineSegment2x< int >::p [inherited]

Start point on the line.

CL_Vec2<int > CL_LineSegment2x< int >::q [inherited]

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The documentation for this class was generated from the following file:

• line_segment.h

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