org.cell2d.celick.geom

Class Curve

java.lang.Object

org.cell2d.celick.geom.Shape

org.cell2d.celick.geom.Curve

All Implemented Interfaces:

java.io.Serializable

public class Curve
extends Shape

A beizer curve implementation. The curve is defined by a start point, an end point and two control points that it will tend towards. This is implementation is fixed segmenting meaning it doesn't scale too well.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.cell2d.celick.geom.Shape

boundingCircleRadius, center, maxX, maxY, minX, minY, points, pointsDirty, trianglesDirty, tris, x, y

Constructor Summary

Constructors

Constructor and Description
Curve(Vector2f p1, Vector2f c1, Vector2f c2, Vector2f p2) Create a new curve with the default segments (20)
Curve(Vector2f p1, Vector2f c1, Vector2f c2, Vector2f p2, int segments) Create a new curve

Method Summary

Modifier and Type	Method and Description
boolean	closed() True if this is a closed shape
protected void	createPoints() Subclasses implement this to create the points of the shape.
Vector2f	pointAt(float t) Get the point at a particular location on the curve
Shape	transform(Transform transform) Apply a transformation and return a new shape.

Methods inherited from class org.cell2d.celick.geom.Shape

calculateRadius, calculateTriangles, checkPoints, contains, contains, findCenter, getBoundingCircleRadius, getCenter, getCenterX, getCenterY, getHeight, getLocation, getMaxX, getMaxY, getMinX, getMinY, getNormal, getPoint, getPointCount, getPoints, getTriangles, getWidth, getX, getY, hasVertex, includes, increaseTriangulation, indexOf, intersects, preCache, prune, setCenterX, setCenterY, setLocation, setLocation, setX, setY, subtract, union

Methods inherited from class java.lang.Object

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

Constructor Detail

Curve

public Curve(Vector2f p1,
             Vector2f c1,
             Vector2f c2,
             Vector2f p2)

Create a new curve with the default segments (20)

Parameters:

p1 - The start of the curve

c1 - The first control point

c2 - The second control point

p2 - The end of the curve

Curve

public Curve(Vector2f p1,
             Vector2f c1,
             Vector2f c2,
             Vector2f p2,
             int segments)

Create a new curve

Parameters:

p1 - The start of the curve

c1 - The first control point

c2 - The second control point

p2 - The end of the curve

segments - The number of segments to use

Method Detail

pointAt

public Vector2f pointAt(float t)

Get the point at a particular location on the curve

Parameters:

t - A value between 0 and 1 defining the location of the curve the point is at

Returns:

The point on the curve

createPoints

protected void createPoints()

Description copied from class: Shape

Subclasses implement this to create the points of the shape.

Specified by:

createPoints in class Shape

transform

public Shape transform(Transform transform)

Description copied from class: Shape

Apply a transformation and return a new shape. This will not alter the current shape but will return the transformed shape.

Specified by:

transform in class Shape

Parameters:

transform - The transform to be applied

Returns:

The transformed shape.

closed

public boolean closed()

Description copied from class: Shape

True if this is a closed shape

Overrides:

closed in class Shape

Returns:

True if this is a closed shape