C# Class Nez.Splines.BezierSpline

houses a series of cubic bezier points and provides helper methods to access the bezier

Public Methods

Method	Description
addCurve ( Vector2 start, Vector2 firstControlPoint, Vector2 secondControlPoint, Vector2 end ) : void	adds a curve to the bezier
getDirectionAtTime ( float t ) : Vector2	gets the direction (normalized first derivative) of the bezier at time t
getDrawingPoints ( int totalSegments ) : Microsoft.Xna.Framework.Vector2[]	breaks up the spline into totalSegments parts and returns all the points required to draw using lines
getPointAtTime ( float t ) : Vector2	gets the point on the bezier at time t
getVelocityAtTime ( float t ) : Vector2	gets the velocity (first derivative) of the bezier at time t
reset ( ) : void	resets the bezier removing all points
setControlPoint ( int index, Vector2 point ) : void	sets a control point taking into account if this is a shared point and adjusting appropriately if it is

Method	Description
pointIndexAtTime ( float &t ) : int	helper that gets the bezier point index at time t. t is modified in the process to be in the range of the curve segment.

adds a curve to the bezier

public addCurve ( Vector2 start, Vector2 firstControlPoint, Vector2 secondControlPoint, Vector2 end ) : void
start	Microsoft.Xna.Framework.Vector2	Start.
firstControlPoint	Microsoft.Xna.Framework.Vector2	First control point.
secondControlPoint	Microsoft.Xna.Framework.Vector2	Second control point.
end	Microsoft.Xna.Framework.Vector2
return	void

gets the direction (normalized first derivative) of the bezier at time t

public getDirectionAtTime ( float t ) : Vector2
t	float	T.
return	Microsoft.Xna.Framework.Vector2

breaks up the spline into totalSegments parts and returns all the points required to draw using lines

public getDrawingPoints ( int totalSegments ) : Microsoft.Xna.Framework.Vector2[]
totalSegments	int	Total segments.
return	Microsoft.Xna.Framework.Vector2[]

gets the point on the bezier at time t

public getPointAtTime ( float t ) : Vector2
t	float	T.
return	Microsoft.Xna.Framework.Vector2

gets the velocity (first derivative) of the bezier at time t

public getVelocityAtTime ( float t ) : Vector2
t	float	T.
return	Microsoft.Xna.Framework.Vector2

resets the bezier removing all points

public reset ( ) : void
return	void

sets a control point taking into account if this is a shared point and adjusting appropriately if it is

public setControlPoint ( int index, Vector2 point ) : void
index	int	Index.
point	Microsoft.Xna.Framework.Vector2	Point.
return	void