com.github.gwtd3.api.core

Class Transform

java.lang.Object

com.google.gwt.core.client.JavaScriptObject

com.github.gwtd3.api.core.Transform

public class Transform
extends com.google.gwt.core.client.JavaScriptObject

A Transform is a representation of a SVG transform attribute.

It allows parsing the svg transform attribute with parse(String), manipulation using setters, such as rotate(double), then generation of the transform attribute with JavaScriptObject.toString()

Author:

Anthony Schiochet

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Transform()

Method Summary

Modifier and Type	Method and Description
static Transform	parse(String transformString) Parses the given 2D affine transform string, as defined by SVG's transform attribute.
double	rotate() Returns the rotation angle θ of this transform, in degrees.
Transform	rotate(double degrees) Set the rotation angle of this transform
Array<Double>	scale() Returns the [kx, ky] scale of this transform, as a two-element array.
Transform	scale(int x) Create a scale operation by x and by y = x.
Transform	scale(int x, int y) Create a scale operation by x and y
double	skew() Returns the x-skew φ of this transform, in degrees.
Transform	skew(double x)
Array<Double>	translate() Returns the [dx, dy] translation of this transform, as a two-element array in local coordinates (typically pixels).
Transform	translate(int x) Create a translation by x and 0.
Transform	translate(int x, int y) Create a translation by x and y

Methods inherited from class com.google.gwt.core.client.JavaScriptObject

cast, createArray, createArray, createFunction, createObject, equals, hashCode, toSource, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Transform

protected Transform()

Method Detail

parse

public static final Transform parse(String transformString)

Parses the given 2D affine transform string, as defined by SVG's transform attribute.

The transform is then decomposed to a standard representation of translate, rotate, x-skew and scale.

This behavior is standardized by CSS: see matrix decomposition for animation.

Parameters:

transformString - the transform string as in SVG

Returns:

the Transform object

rotate

public final double rotate()

Returns the rotation angle θ of this transform, in degrees.

Returns:

the rotation angle

rotate

public final Transform rotate(double degrees)

Set the rotation angle of this transform

Parameters:

degrees - the rotate degree

Returns:

the modified transformation

translate

public final Array<Double> translate()

Returns the [dx, dy] translation of this transform, as a two-element array in local coordinates (typically pixels).

Returns:

translation coords

translate

public final Transform translate(int x,
                                 int y)

Create a translation by x and y

Parameters:

x -

y -

Returns:

the Transform.

translate

public final Transform translate(int x)

Create a translation by x and 0.

Parameters:

x - the x

Returns:

the Transform

scale

public final Transform scale(int x,
                             int y)

Create a scale operation by x and y

Parameters:

x -

y -

Returns:

the Transform.

scale

public final Transform scale(int x)

Create a scale operation by x and by y = x.

Parameters:

x - the x

Returns:

the Transform

skew

public final double skew()

Returns the x-skew φ of this transform, in degrees.

Returns:

the x skew

skew

public final Transform skew(double x)

scale

public final Array<Double> scale()

Returns the [kx, ky] scale of this transform, as a two-element array.

Returns:

translation coords