Class EDU.emporia.mathbeans.TangentLine

All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class EDU.emporia.mathbeans.TangentLine

Object
   |
   +----MathFunction
           |
           +----EDU.emporia.mathbeans.TangentLine

public class TangentLine
extends MathFunction

A class to be used to construct a tangent line to a curve that can be displayed on a MathGrapher

Version:: 1.0
Author:: Joe Yanik
Since:: 7/6/00

autoSlope: If true the slope will be approximated automatically.
f: The MathFunction object to which this line is tangent
fPrime: The MathFunction object used to determine the derivative when autoSlope is false.
slope: The slope of the line
xBase: The x-coordinate of the base point
yBase: The y-coordinate of the base point

EDU.emporia.mathbeans.TangentLine()

functionValue(double): Returns the y-coordinate of the tangent line corresponding to the given x
getBase(): Returns the base point for the tangent line (The base point is the point on the curve at which this line is tangent).
getF(): Gets the MathFunction object that represents the curve to which this line will be tangent
getFPrime(): Gets the function to be used to compute the derivative of f.
getSlope(): Gives the slope of the line
getXBase(): Gets the x-value for the point on the curve to be used as a base point for the tangent line
getYBase(): Gives the y-coordinate of the base point on the curve
setF(MathFunction): Sets the MathFunction object that represents the curve to which this line will be tangent
setFPrime(MathFunction): Sets the function to be used to compute the derivative of f.
setXBase(double): Sets the x-value for the point on the curve to be used as a base point for the tangent line
updateSlope(): Updates the slope.

autoSlope

protected boolean autoSlope

If true the slope will be approximated automatically. If false it will be based on the function fPrime

protected EDU.emporia.mathtools.MathFunction f

The MathFunction object to which this line is tangent

fPrime

protected EDU.emporia.mathtools.MathFunction fPrime

The MathFunction object used to determine the derivative when autoSlope is false.

slope

protected double slope

The slope of the line

xBase

protected double xBase

The x-coordinate of the base point

yBase

protected double yBase

The y-coordinate of the base point

TangentLine

public TangentLine()

functionValue

public double functionValue(double a)

Returns the y-coordinate of the tangent line corresponding to the given x

Parameters:: a - The x-coordinate
Returns:: The y-coordinate
Overrides:: functionValue in class MathFunction

getBase

public EDU.emporia.mathtools.Point2D.Double getBase()

Returns the base point for the tangent line (The base point is the point on the curve at which this line is tangent).

getF

public EDU.emporia.mathtools.MathFunction getF()

Gets the MathFunction object that represents the curve to which this line will be tangent

Returns:: The curve

getFPrime

public EDU.emporia.mathtools.MathFunction getFPrime()

Gets the function to be used to compute the derivative of f.

Returns:: The derivative that is being used

getSlope

public double getSlope()

Gives the slope of the line

Returns:: The slope

getXBase

public double getXBase()

Gets the x-value for the point on the curve to be used as a base point for the tangent line

Returns:: The x-value of the base point

getYBase

public double getYBase()

Gives the y-coordinate of the base point on the curve

Returns:: The y-coordinate of the base point

setF

public void setF(MathFunction f)

Sets the MathFunction object that represents the curve to which this line will be tangent

Parameters:: f - The curve

setFPrime

public void setFPrime(MathFunction fPrime)

Sets the function to be used to compute the derivative of f. If this is not called the derivative will be approximated

Parameters:: fPrime - The derivative function

setXBase

public void setXBase(double xBase)

Sets the x-value for the point on the curve to be used as a base point for the tangent line

Parameters:: xBase - The x-value of the base point

updateSlope

public void updateSlope()

Updates the slope. Should be called if the curve or the base point is changed

All Packages  Class Hierarchy  This Package  Previous  Next  Index