Module omix.api

Package omix.util.math.curves

Class ArcSectionComputer2D

java.lang.Object

omix.util.math.curves.CurveSectionComputer<Vec2d>

omix.util.math.curves.ArcSectionComputer2D

public class ArcSectionComputer2D
extends CurveSectionComputer<Vec2d>

This class represents an arc curve section. Arc curves can only be computed in 2D.

Author:

Dr. Peter Droste, Omix Visualization

Field Summary

Fields

Modifier and Type	Field	Description
Vec2d	center	Center point of the arc.
double	length	Angle length of the arc in radians.
double	radiusX	X radius of the arc.
double	radiusY	Y radius of the arc.
double	startAngle	Start angle of the arc in radians.

Constructor Summary

Constructors

Constructor	Description
ArcSectionComputer2D(Vec2d center, double radiusX, double radiusY, double startAngle, double length)	creates a new arc section computation unit.

Method Summary

Modifier and Type	Method	Description
Vec2d	accelerationAt(double t)	returns the acceleration (second derivative) of the curve at the parameter t
double	getCurveSectionLength()	returns the arc length
boolean	isArc()	this is always an arc.
Vec2d	pointAt(double t)	returns the point of the curve at the parameter t
Vec2d	tangentAt(double t)	returns the tangent (first derivative) of the curve at the parameter t

Methods inherited from class omix.util.math.curves.CurveSectionComputer

getT, getT, isCubic, isLine, isQuad

Methods inherited from class java.lang.Object

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

Field Details

center

public final Vec2d center

Center point of the arc.

radiusX

public final double radiusX

X radius of the arc.

radiusY

public final double radiusY

Y radius of the arc.

startAngle

public final double startAngle

Start angle of the arc in radians.

length

public final double length

Angle length of the arc in radians.

Constructor Details

ArcSectionComputer2D

public ArcSectionComputer2D(Vec2d center, double radiusX, double radiusY, double startAngle, double length)

creates a new arc section computation unit.

Parameters:

center - Center point of the arc

radiusX - X radius of the arc

radiusY - Y radius of the arc

startAngle - Start angle in radians

length - Angle length in radians

Method Details

pointAt

public Vec2d pointAt(double t)

returns the point of the curve at the parameter t

Specified by:

pointAt in class CurveSectionComputer<Vec2d>

Parameters:

t - parameter

Returns:

point

See Also:

CurveSectionComputer.pointAt(double)

tangentAt

public Vec2d tangentAt(double t)

returns the tangent (first derivative) of the curve at the parameter t

Specified by:

tangentAt in class CurveSectionComputer<Vec2d>

Parameters:

t - parameter

Returns:

first derivative

See Also:

CurveSectionComputer.tangentAt(double)

accelerationAt

public Vec2d accelerationAt(double t)

returns the acceleration (second derivative) of the curve at the parameter t

Specified by:

accelerationAt in class CurveSectionComputer<Vec2d>

Parameters:

t - parameter

Returns:

second derivative

See Also:

CurveSectionComputer.accelerationAt(double)

getCurveSectionLength

public double getCurveSectionLength()

returns the arc length

Specified by:

getCurveSectionLength in class CurveSectionComputer<Vec2d>

Returns:

length

See Also:

CurveSectionComputer.getCurveSectionLength()

isArc

public boolean isArc()

this is always an arc.

Overrides:

isArc in class CurveSectionComputer<Vec2d>

Returns:

true

See Also:

CurveSectionComputer.isArc()