Package toxi.geom

Class BezierCurve2D

java.lang.Object

toxi.geom.BezierCurve2D

public class BezierCurve2D
extends Object

Standard multi-segment bezier curve implementation with optional automatic handle alignment between segments. Can be used to create closed curves which can then be converted into Polygon2D instances. Also provides curve tangent calculation feature. Usage of this class is very similar to Spline2D.

Constructor Summary

Constructors

Constructor	Description
BezierCurve2D()
BezierCurve2D(List<Vec2D> points)

Method Summary

Modifier and Type	Method	Description
BezierCurve2D	add(Vec2D p)
void	alignAllHandles()
void	alignHandlesForPoint(int id)
static Vec2D	computePointInSegment(Vec2D a, Vec2D b, Vec2D c, Vec2D d, float t)
static Vec2D	computeTangentInSegment(Vec2D a, Vec2D b, Vec2D c, Vec2D d, float t)
boolean	isClosed()
LineStrip2D	toLineStrip2D(int res)	Computes a list of intermediate curve points for all segments.
Polygon2D	toPolygon2D(int res)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

BezierCurve2D

public BezierCurve2D()

BezierCurve2D

public BezierCurve2D(List<Vec2D> points)

Method Details

computePointInSegment

public static Vec2D computePointInSegment(Vec2D a,
 Vec2D b,
 Vec2D c,
 Vec2D d,
 float t)

computeTangentInSegment

public static Vec2D computeTangentInSegment(Vec2D a,
 Vec2D b,
 Vec2D c,
 Vec2D d,
 float t)

add

public BezierCurve2D add(Vec2D p)

alignAllHandles

public void alignAllHandles()

alignHandlesForPoint

public void alignHandlesForPoint(int id)

isClosed

public boolean isClosed()

Returns:

true, if the curve is closed. I.e. the first and last control point coincide.

toLineStrip2D

public LineStrip2D toLineStrip2D(int res)

Computes a list of intermediate curve points for all segments. For each curve segment the given number of points will be produced.

Parameters:

res - number of points per segment

Returns:

list of Vec2Ds

toPolygon2D

public Polygon2D toPolygon2D(int res)