medusa.georgios.color_factory

Class CubicBezierSegment3f

java.lang.Object

medusa.georgios.color_factory.CubicBezierSegment3f

public final class CubicBezierSegment3f
extends java.lang.Object

Provides capabilities to compute a cubic bezier segement.

Constructor Summary

Constructors

Constructor and Description
CubicBezierSegment3f() The default constructor creates and initialiazes the control nodes.

Method Summary

Modifier and Type	Method and Description
Point3f	computeHalfwayPoint() This method computes the point of the segment assuming parameter = 0.5f
void	computeInterpolation(Tuple3f prePoint, Tuple3f postPoint, float tangentScale) This method computes the internal node on the base of special criteria.
Point3f	computePoint(float t) Computes the point coordinate to the according parameter t .
Vector3f	computeTangent(float t) Computes the tangent to the segment at specified paramter t .
void	setFinalTangent(Tuple3f tangent) This method applies a tangent to the last node and thereby modifies a inner control node.
void	setInitialTangent(Tuple3f tangent) This method applies a tangent to the first node and thereby modifies a inner control node.
void	setNode(Tuple3f point, int index) Sets the specified note to point .

Methods inherited from class java.lang.Object

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

Constructor Detail

CubicBezierSegment3f

public CubicBezierSegment3f()

The default constructor creates and initialiazes the control nodes.

Method Detail

setNode

public final void setNode(Tuple3f point,
                          int index)

Sets the specified note to point .

Parameters:

point - the new point.

index - the index identifying which node to replace.

setInitialTangent

public final void setInitialTangent(Tuple3f tangent)

This method applies a tangent to the first node and thereby modifies a inner control node.

Parameters:

tangent - the tangent to apply.

setFinalTangent

public final void setFinalTangent(Tuple3f tangent)

This method applies a tangent to the last node and thereby modifies a inner control node.

Parameters:

tangent - the tangent to apply.

computeInterpolation

public final void computeInterpolation(Tuple3f prePoint,
                                       Tuple3f postPoint,
                                       float tangentScale)

This method computes the internal node on the base of special criteria.

Parameters:

prePoint - the point that is assumed to be a proper coordinate for extrapolation beyond parameter 0. Can be null .

postPoint - the point that is assumed to be a proper coordinate for extrapolation beyond parameter 1.Can be null .

tangentScale - factor to control the implicitly computed tangent length.

computePoint

public final Point3f computePoint(float t)

Computes the point coordinate to the according parameter t .

Parameters:

t - the parameter for the computation.

Returns:

Point3f - the computed point coordinate.

computeTangent

public final Vector3f computeTangent(float t)

Computes the tangent to the segment at specified paramter t .

Parameters:

t - the parameter for the computation.

Returns:

Vector3f - the computed tangent.

computeHalfwayPoint

public final Point3f computeHalfwayPoint()

This method computes the point of the segment assuming parameter = 0.5f

Returns:

Point3f - computed point.