File	Doc	Category	Size	Date	Package
Transformation.java	API Doc	Android 1.5 API	4158	Wed May 06 22:41:56 BST 2009	android.view.animation

Transformation

• java.lang.Object

Fields Summary
public static int	TYPE_IDENTITY Indicates a transformation that has no effect (alpha = 1 and identity matrix.)
public static int	TYPE_ALPHA Indicates a transformation that applies an alpha only (uses an identity matrix.)
public static int	TYPE_MATRIX Indicates a transformation that applies a matrix only (alpha = 1.)
public static int	TYPE_BOTH Indicates a transformation that applies an alpha and a matrix.
protected android.graphics.Matrix	mMatrix
protected float	mAlpha
protected int	mTransformationType

Constructors Summary
public Transformation() Creates a new transformation with alpha = 1 and the identity matrix. clear();

Methods Summary
public void	clear() Reset the transformation to a state that leaves the object being animated in an unmodified state. The transformation type is {@link #TYPE_BOTH} by default. if (mMatrix == null) { mMatrix = new Matrix(); } else { mMatrix.reset(); } mAlpha = 1.0f; mTransformationType = TYPE_BOTH;
public void	compose(android.view.animation.Transformation t) Apply this Transformation to an existing Transformation, e.g. apply a scale effect to something that has already been rotated. param t mAlpha *= t.getAlpha(); mMatrix.preConcat(t.getMatrix());
public float	getAlpha() return The degree of transparency return mAlpha;
public android.graphics.Matrix	getMatrix() return The 3x3 Matrix representing the trnasformation to apply to the coordinates of the object being animated return mMatrix;
public int	getTransformationType() Indicates the nature of this transformation. return {@link #TYPE_ALPHA}, {@link #TYPE_MATRIX}, {@link #TYPE_BOTH} or {@link #TYPE_IDENTITY}. return mTransformationType;
public void	set(android.view.animation.Transformation t) Clones the specified transformation. param t The transformation to clone. mAlpha = t.getAlpha(); mMatrix.set(t.getMatrix()); mTransformationType = t.getTransformationType();
public void	setAlpha(float alpha) Sets the degree of transparency param alpha 1.0 means fully opaqe and 0.0 means fully transparent mAlpha = alpha;
public void	setTransformationType(int transformationType) Sets the transformation type. param transformationType One of {@link #TYPE_ALPHA}, {@link #TYPE_MATRIX}, {@link #TYPE_BOTH} or {@link #TYPE_IDENTITY}. mTransformationType = transformationType;
public java.lang.String	toShortString() Return a string representation of the transformation in a compact form. return "{alpha=" + mAlpha + " matrix=" + mMatrix.toShortString() + "}";
public java.lang.String	toString() return "Transformation{alpha=" + mAlpha + " matrix=" + mMatrix.toShortString() + "}";