Package geomss.geom.cst

Class CSTCurve

java.lang.Object

geomss.geom.AbstractGeomElement<T>

geomss.geom.AbstractCurve<CSTCurve>

geomss.geom.cst.CSTCurve

All Implemented Interfaces:

Curve<CSTCurve>, GeomElement<CSTCurve>, ParametricGeometry<CSTCurve>, Transformable<CSTCurve>, java.io.Serializable, java.lang.Cloneable, java.lang.Comparable, javolution.lang.Reusable, javolution.xml.XMLSerializable

Direct Known Subclasses:

BasicCSTCurve, CSTCurveTrans

public abstract class CSTCurve
extends AbstractCurve<CSTCurve>

The interface and implementation in common to all Class-Shape-Transform (CST) planar curves. This curve type is useful for defining smooth aircraft component shapes with a minimum number of defining parameters.

Modified by: Joseph A. Huwaldt

Version:

November 28, 2015

Author:

Joseph A. Huwaldt, Date: October 7, 2015

See Also:

Serialized Form

Field Summary

Fields inherited from class geomss.geom.AbstractCurve

GTOL

Fields inherited from class geomss.geom.AbstractGeomElement

RESOURCES

Constructor Summary

Constructors

Constructor	Description
CSTCurve()

Method Summary

Modifier and Type	Method	Description
abstract CSTClassFunction	getCFunction()	Return the class function associated with this CST curve.
abstract Parameter<javax.measure.quantity.Length>	getChord()	Return the chord length of the curve.
abstract Parameter<javax.measure.quantity.Length>	getOffsetTE()	Return the offset of the trailing edge of the curve from the chord line.
abstract Point	getOrigin()	Return the origin of the leading edge of this curve.
abstract CSTShapeFunction	getSFunction()	Return the shape function associated with this CST curve.
CSTCurveTrans	getTransformed(GTransform transform)	Returns transformed version of this element.
abstract Vector<javax.measure.quantity.Dimensionless>	getXhat()	Return the chord-wise direction of this curve (the curve X-direction).
abstract Vector<javax.measure.quantity.Dimensionless>	getYhat()	Return the in-plane direction of this curve perpendicular to the chord-wise direction (the curve Y-direction).
abstract BasicCSTCurve	immutable()	Return an immutable version of this CST curve.
boolean	isDegenerate(Parameter<javax.measure.quantity.Length> tol)	Return true if this curve is degenerate (i.e.: has length less than the specified tolerance).
boolean	isPlanar(Parameter<javax.measure.quantity.Length> tol)	Return true if this curve is planar or false if it is not.
int	size()	Returns the number of child-elements that make up this geometry element.

Methods inherited from class geomss.geom.AbstractCurve

extractGrid, getArcLength, getArcLength, getArcLength, getBinormal, getBinormal, getClosest, getClosest, getClosest, getClosest, getClosest, getClosest, getCurvature, getCurvature, getDerivatives, getEnclosedArea, getFarthest, getFarthest, getFarthest, getLimitPoint, getParDimension, getPoint, getPoint, getPointAtArcLength, getPrincipalNormal, getPrincipalNormal, getRealPoint, getSDerivative, getSDerivatives, getTangencyPoint, getTangent, getTangent, getTorsion, getTorsion, getVariationOfCurvature, getVariationOfCurvature, gridToTolerance, intersect, intersect, intersect, intersect, intersect, isCircular, isLine, splitAt

Methods inherited from class geomss.geom.AbstractGeomElement

addChangeListener, clone, compareTo, equals, getAllUserData, getID, getName, getUserData, hashCode, putAllUserData, putUserData, removeChangeListener, removeUserData, reset, setName, toString, toText

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface geomss.geom.Curve

copy, copyToReal, getRealPoint, getSDerivatives, reverse, splitAt, to, toDimension, toNurbs

Methods inherited from interface geomss.geom.GeomElement

addChangeListener, getAllUserData, getBoundsMax, getBoundsMin, getID, getName, getPhyDimension, getUnit, getUserData, isValid, putAllUserData, putUserData, removeChangeListener, removeUserData, setName, toText

Constructor Detail

CSTCurve

public CSTCurve()

Method Detail

getCFunction

public abstract CSTClassFunction getCFunction()

Return the class function associated with this CST curve.

Returns:

The class function associated with this CST curve.

getSFunction

public abstract CSTShapeFunction getSFunction()

Return the shape function associated with this CST curve.

Returns:

The shape function associated with this CST curve.

getOffsetTE

public abstract Parameter<javax.measure.quantity.Length> getOffsetTE()

Return the offset of the trailing edge of the curve from the chord line.

Returns:

The offset of the trailing edge of the curve from the chord line.

getChord

public abstract Parameter<javax.measure.quantity.Length> getChord()

Return the chord length of the curve. This defines the scale or size of the curve.

Returns:

The chord length of the curve.

getOrigin

public abstract Point getOrigin()

Return the origin of the leading edge of this curve. This defines the s=0 location of the curve in space.

Returns:

The origin of the leading edge of this curve.

getXhat

public abstract Vector<javax.measure.quantity.Dimensionless> getXhat()

Return the chord-wise direction of this curve (the curve X-direction).

Returns:

The chord-wise direction of this curve.

getYhat

public abstract Vector<javax.measure.quantity.Dimensionless> getYhat()

Return the in-plane direction of this curve perpendicular to the chord-wise direction (the curve Y-direction).

Returns:

The in-plane direction of this curve perpendicular to Xhat.

immutable

public abstract BasicCSTCurve immutable()

Return an immutable version of this CST curve.

Returns:

an immutable version of this curve.

size

public int size()

Returns the number of child-elements that make up this geometry element. This implementation always returns 0.

Returns:

Always returns 0.

isDegenerate

public boolean isDegenerate(Parameter<javax.measure.quantity.Length> tol)

Return true if this curve is degenerate (i.e.: has length less than the specified tolerance).

Specified by:

isDegenerate in interface Curve<CSTCurve>

Specified by:

isDegenerate in interface ParametricGeometry<CSTCurve>

Overrides:

isDegenerate in class AbstractCurve<CSTCurve>

Parameters:

tol - The tolerance for determining if this curve is degenerate. May not be null.

Returns:

true if this curve is degenerate.

isPlanar

public boolean isPlanar(Parameter<javax.measure.quantity.Length> tol)

Return true if this curve is planar or false if it is not. BasicCSTCurve objects are always planar, so this always returns true.

Specified by:

isPlanar in interface Curve<CSTCurve>

Overrides:

isPlanar in class AbstractCurve<CSTCurve>

Parameters:

tol - The geometric tolerance to use in determining if the curve is planar. Ignored by this implementation.

Returns:

Always returns true.

getTransformed

public CSTCurveTrans getTransformed(GTransform transform)

Returns transformed version of this element. The returned object implements GeomTransform and contains this element as a child.

Parameters:

transform - The transformation to apply to this geometry. May not be null.

Returns:

A new triangle that is identical to this one with the specified transformation applied.

Throws:

DimensionException - if this point is not 3D.