KSD_EXPORT_CLASSclass TLine

A line shape object.

Inheritance:

Public Methods

TLine()

TLine(ksd::fixed slope, ksd::fixed yintercept, int start, int stop)

Create a line with the given attributes

TLine(int xintercept, int top, int bottom)

This is the verticle line constructor

TLine(const TPoint2D& point1, const TPoint2D& point2)

Create a line that connects the two given points

bool IsVerticle() const

Returns true id the line is verticle

bool IsHorizontal() const

Returns true if the line is horizontal

ksd::fixed GetSlope() const

Returns the slopr of the line

ksd::fixed GetIntercept() const

Returns the y-intercept of the line, unless this is a verticle line, in which case it returns the x-intercept

int GetStart() const

Returns the value that the segment starts on

int GetStop() const

Returns the value that the segment stops on,

void SetVerticle(bool _verticle)

Allows you to change this to or from a verticle line

void SetSlope(ksd::fixed _slope)

Sets the line slope

void SetIntercept(ksd::fixed _intercept)

Sets the line intercept

void SetStart(int _start)

Sets the segment start

void SetStop(int _stop)

Sets the segment stop

void CreateLine(ksd::fixed slope, ksd::fixed yintercept, int start, int stop)

Creates a line using the given sttributes

void CreateHLine(int y, int start, int stop)

Creates a horizontal line

void CreateVLine(int x, int start, int stop)

Creates a verticle line

TLine PerpendicularLine(const TPoint2D& start, bool& Touches) const

Returns a line perpendicular to this line at the gvien point.

ksd::fixed Length()

Returns the length of the line at a given point

ksd::fixed Solve(int Value)

Returns the y-value for a given x-value (y=mx+b)

void SetEndPoints(const TPoint2D& point1, const TPoint2D& point2)

Creates a line using two endpoitns

TPoint2D GetStartPoint()

Returns the start point (Is slower than you may think)

TPoint2D GetEndPoint()

Returns the end point (Is slower than you may think)

Inherited from TShape2D:

Public Methods

virtual bool IsInside(const TPoint2D& V) const

virtual void Move(int X, int Y)

virtual void MoveTo(int X, int Y)

void Move(const TPoint2D& p)

void MoveTo(const TPoint2D& p)

virtual void Visit(Visitor*)

Public Members

class Visitor

Used to add new operations to a shape without modifying the source

Documentation

A line shape object. Used to describe edges in screen space. This particular line implementation is good for collision detection but not much more. It is help in slope-intercept format (y=mx+b) with two limiting values to describe the start and end of the line segment. This is makes it a very slow operation to move the line.

TLine()

TLine(ksd::fixed slope, ksd::fixed yintercept, int start, int stop)

Create a line with the given attributes

TLine(int xintercept, int top, int bottom)

This is the verticle line constructor

TLine(const TPoint2D& point1, const TPoint2D& point2)

Create a line that connects the two given points

bool IsVerticle() const

Returns true id the line is verticle

bool IsHorizontal() const

Returns true if the line is horizontal

ksd::fixed GetSlope() const

Returns the slopr of the line

ksd::fixed GetIntercept() const

Returns the y-intercept of the line, unless this is a verticle line, in which case it returns the x-intercept

int GetStart() const

Returns the value that the segment starts on

int GetStop() const

Returns the value that the segment stops on,

void SetVerticle(bool _verticle)

Allows you to change this to or from a verticle line

void SetSlope(ksd::fixed _slope)

Sets the line slope

void SetIntercept(ksd::fixed _intercept)

Sets the line intercept

void SetStart(int _start)

Sets the segment start

void SetStop(int _stop)

Sets the segment stop

void CreateLine(ksd::fixed slope, ksd::fixed yintercept, int start, int stop)

Creates a line using the given sttributes

void CreateHLine(int y, int start, int stop)

Creates a horizontal line

void CreateVLine(int x, int start, int stop)

Creates a verticle line

TLine PerpendicularLine(const TPoint2D& start, bool& Touches) const

Returns a line perpendicular to this line at the gvien point. Sets the Touches variable to true if the new line infact touches this line.

ksd::fixed Length()

Returns the length of the line at a given point

ksd::fixed Solve(int Value)

Returns the y-value for a given x-value (y=mx+b)

void SetEndPoints(const TPoint2D& point1, const TPoint2D& point2)

Creates a line using two endpoitns

TPoint2D GetStartPoint()

Returns the start point (Is slower than you may think)

TPoint2D GetEndPoint()

Returns the end point (Is slower than you may think)

This class has no child classes.

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