SfxpCoord Class Reference
[Fixed-Point math routines]

Class used to handle fixed-point x/y coordinates. More...

#include <Fxp.h>

List of all members.

Public Member Functions
	SfxpCoord (FxpFloat xin, FxpFloat yin)
	Floating point constructor.
	SfxpCoord (int xin=0, int yin=0)
	Integer constructor.
bool	operator== (SfxpCoord &coord)
	Comparison operator.
bool	operator!= (SfxpCoord &coord)
	Comparison operator.
SfxpCoord	operator+ (SfxpCoord coord)
	Vector addition operator.
SfxpCoord	operator- (SfxpCoord coord)
	Vector subtraction operator.
SfxpCoord	operator+= (SfxpCoord coord)
	Adds passed vector to stored vector.
SfxpCoord	FxpScalar (Sfxp val)
	Multiplies the vector by a signed fixed point scalar value.
Afxp	Trajectory ()
	Returns the angle it's pointing at. Valid for all angles.
SfxpCoord	IntScalar (int val)
	Multiplies the vector by a signed fixed-point integer value.
bool	MajorDigitsEqual (SfxpCoord coord) const
	Returns true if the truncated integer portions match.
int	X () const
	Returns the truncated integer portion of the X coordinate.
int	Y () const
	Returns the truncated integer portion of the Y coordinate.
int	Xfxp () const
	Returns the raw fixed-point X coordinate.
int	Yfxp () const
	Returns the raw fixed-point Y coordinate.
FxpFloat	Xfloat ()
	Returns the X coordinate, converted to floating point.
FxpFloat	Yfloat ()
	Returns the Y coordinate, converted to floating point.
SfxpCoord	SetFloat (FxpFloat xin, FxpFloat yin)
	Sets X and Y coordinates, converting from floating point.
SfxpCoord	SetFxp (Sfxp xin, Sfxp yin)
	Sets X and Y coordinates from raw fixed point values.
SfxpCoord	SetInt (Sint32 xin, Sint32 yin)
	Initializes coordinates, converting from integer values.
int	Nonzero ()
	Returns zero if the vector is zero in magnitude.
void	Vector (Sfxp magnitude, Afxp angle)
	Initializes coordinates to the specified angle and magnitude.
Sfxp	Magnitude ()
	Returns the magnitude of the vector. Not 100% fixed-point yet.

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Detailed Description

Fixed-point coordinates are the foundation of Spritelib. This is a very simple class that can do a LOT of things. You can add and subtract them like vectors, turn a direction/velocity vector into an X/Y velocity vector and vice versa, multiply by scalars, convert to and from floating point, and more. This class will probably go over time just because there are so many things you CAN do with vectors.

Definition at line 141 of file Fxp.h.

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The documentation for this class was generated from the following file:

• Fxp.h

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