pulpcore.math
Class Transform

java.lang.Object
  pulpcore.math.Transform

public class Transform
extends Object

The Transform class represents a 2D affine transform. Most apps will not need to use this class - transformations happen automatically using sprite properties.

Field Summary

static int	TYPE_IDENTITY
static int	TYPE_ROTATE
static int	TYPE_SCALE
static int	TYPE_TRANSLATE

Constructor Summary

Transform()

Transform(Transform transform)

Method Summary

void	clear() Clears this transform, i.e., sets this transform to the identity matrix.
void	concatenate(Transform transform)
boolean	equals(Object object)
Rect	getBounds(int fw, int fh) Gets the fixed-point bounds.
boolean	getBounds(int fw, int fh, Rect bounds) Gets the integer bounds.
int	getDeterminant()
int	getScaleX()
int	getScaleY()
int	getShearX()
int	getShearY()
int	getTranslateX()
int	getTranslateY()
int	getType()
int	hashCode()
boolean	inverseTransform(Tuple2i t)
int	inverseTransformX(int fx, int fy) Returns Integer.MAX_VALUE if this transform can't be inverted.
int	inverseTransformY(int fx, int fy) Returns Integer.MAX_VALUE if this transform can't be inverted.
void	preConcatenate(Transform transform)
void	rotate(int fAngle)
void	rotate(int fCosAngle, int fSinAngle)
void	roundTranslation()
void	scale(int fx, int fy)
void	set(Transform transform) Sets this transform to a copy of specified transform.
void	shear(int fx, int fy)
void	transform(Tuple2i t)
int	transformX(int fx, int fy)
int	transformY(int fx, int fy)
void	translate(int fx, int fy)

Methods inherited from class java.lang.Object

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

Field Detail

TYPE_IDENTITY

public static final int TYPE_IDENTITY

See Also:

Constant Field Values

TYPE_TRANSLATE

public static final int TYPE_TRANSLATE

See Also:

Constant Field Values

TYPE_SCALE

public static final int TYPE_SCALE

See Also:

Constant Field Values

TYPE_ROTATE

public static final int TYPE_ROTATE

See Also:

Constant Field Values

Constructor Detail

Transform

public Transform()

Transform

public Transform(Transform transform)

Method Detail

equals

public boolean equals(Object object)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

transformX

public int transformX(int fx,
                      int fy)

transformY

public int transformY(int fx,
                      int fy)

transform

public void transform(Tuple2i t)

inverseTransformX

public int inverseTransformX(int fx,
                             int fy)

Returns Integer.MAX_VALUE if this transform can't be inverted.

inverseTransformY

public int inverseTransformY(int fx,
                             int fy)

Returns Integer.MAX_VALUE if this transform can't be inverted.

inverseTransform

public boolean inverseTransform(Tuple2i t)

Returns:

true on success; false if this transform can't be inverted.

getBounds

public boolean getBounds(int fw,
                         int fh,
                         Rect bounds)

Gets the integer bounds.

Returns:

true if the bounds instance was changed

getBounds

public Rect getBounds(int fw,
                      int fh)

Gets the fixed-point bounds.

getType

public int getType()

getTranslateX

public int getTranslateX()

getTranslateY

public int getTranslateY()

getScaleX

public int getScaleX()

getScaleY

public int getScaleY()

getShearX

public int getShearX()

getShearY

public int getShearY()

getDeterminant

public int getDeterminant()

clear

public void clear()

Clears this transform, i.e., sets this transform to the identity matrix.

set

public void set(Transform transform)

Sets this transform to a copy of specified transform.

concatenate

public void concatenate(Transform transform)

preConcatenate

public void preConcatenate(Transform transform)

translate

public void translate(int fx,
                      int fy)

roundTranslation

public void roundTranslation()

scale

public void scale(int fx,
                  int fy)

rotate

public void rotate(int fAngle)

rotate

public void rotate(int fCosAngle,
                   int fSinAngle)

shear

public void shear(int fx,
                  int fy)