com.alexvasilkov.gestures

Class State

java.lang.Object

com.alexvasilkov.gestures.State

public class State
extends java.lang.Object

Represents 2d transformation state.

Field Summary

Fields

Modifier and Type	Field and Description
static float	EPSILON

Constructor Summary

Constructors

Constructor and Description
State()

Method Summary

Modifier and Type	Method and Description
static int	compare(float v1, float v2) Compares two float values, allowing small difference (see EPSILON).
State	copy()
static boolean	equals(float v1, float v2) Compares two float values, allowing small difference (see EPSILON).
boolean	equals(java.lang.Object obj)
void	get(android.graphics.Matrix matrix) Applying state to provided matrix.
float	getRotation() Rotation in degrees within the range [-180..180].
float	getX()
float	getY()
float	getZoom()
int	hashCode()
boolean	isEmpty()
void	rotateBy(float angle, float pivotX, float pivotY)
void	rotateTo(float angle, float pivotX, float pivotY)
void	set(float x, float y, float zoom, float rotation)
void	set(android.graphics.Matrix matrix) Applying state from given matrix.
void	set(State other)
java.lang.String	toString()
void	translateBy(float dx, float dy)
void	translateTo(float x, float y)
void	zoomBy(float factor, float pivotX, float pivotY)
void	zoomTo(float zoom, float pivotX, float pivotY)

Methods inherited from class java.lang.Object

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

Field Detail

EPSILON

public static final float EPSILON

See Also:

Constant Field Values

Constructor Detail

State

public State()

Method Detail

getX

public float getX()

getY

public float getY()

getZoom

public float getZoom()

getRotation

public float getRotation()

Rotation in degrees within the range [-180..180].

isEmpty

public boolean isEmpty()

Returns:

true if x == 0f && y == 0f && zoom == 1f && rotation == 0f

get

public void get(android.graphics.Matrix matrix)

Applying state to provided matrix. Matrix will contain translation, scale and rotation.

translateBy

public void translateBy(float dx,
                        float dy)

translateTo

public void translateTo(float x,
                        float y)

zoomBy

public void zoomBy(float factor,
                   float pivotX,
                   float pivotY)

zoomTo

public void zoomTo(float zoom,
                   float pivotX,
                   float pivotY)

rotateBy

public void rotateBy(float angle,
                     float pivotX,
                     float pivotY)

rotateTo

public void rotateTo(float angle,
                     float pivotX,
                     float pivotY)

set

public void set(float x,
                float y,
                float zoom,
                float rotation)

set

public void set(android.graphics.Matrix matrix)

Applying state from given matrix. Matrix should contain correct translation/scale/rotation.

set

public void set(State other)

copy

public State copy()

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public static boolean equals(float v1,
                             float v2)

Compares two float values, allowing small difference (see EPSILON).

compare

public static int compare(float v1,
                          float v2)

Compares two float values, allowing small difference (see EPSILON).