程序包 org.meteoinfo.image.filter

类 TransformFilter

java.lang.Object

org.meteoinfo.image.filter.AbstractBufferedImageOp

org.meteoinfo.image.filter.TransformFilter

所有已实现的接口:

BufferedImageOp, Cloneable

直接已知子类:

CircleFilter, CurlFilter, DiffuseFilter, DisplaceFilter, FieldWarpFilter, KaleidoscopeFilter, MapFilter, MarbleFilter, OffsetFilter, PerspectiveFilter, PinchFilter, PolarFilter, RippleFilter, RotateFilter, ShearFilter, SphereFilter, SwimFilter, TwirlFilter, WaterFilter

public abstract class TransformFilter
extends AbstractBufferedImageOp

An abstract superclass for filters which distort images in some way. The subclass only needs to override two methods to provide the mapping between source and destination pixels.

字段概要

字段

限定符和类型	字段	说明
static int	BILINEAR	Use bilinear interpolation.
static int	CLAMP	Clamp pixels to the image edges.
protected int	edgeAction	The action to take for pixels off the image edge.
protected int	interpolation	The type of interpolation to use.
static int	NEAREST_NEIGHBOUR	Use nearest-neighbout interpolation.
protected Rectangle	originalSpace	The input image rectangle.
static int	RGB_CLAMP	Clamp pixels RGB to the image edges, but zero the alpha.
protected Rectangle	transformedSpace	The output image rectangle.
static int	WRAP	Wrap pixels off the edge onto the oppsoite edge.
static int	ZERO	Treat pixels off the edge as zero.

构造器概要

构造器

构造器	说明
TransformFilter()

方法概要

限定符和类型	方法	说明
BufferedImage	filter(BufferedImage src, BufferedImage dst)
protected BufferedImage	filterPixelsNN(BufferedImage dst, int width, int height, int[] inPixels, Rectangle transformedSpace)
int	getEdgeAction()	Get the action to perform for pixels off the edge of the image.
int	getInterpolation()	Get the type of interpolation to perform.
void	setEdgeAction(int edgeAction)	Set the action to perform for pixels off the edge of the image.
void	setInterpolation(int interpolation)	Set the type of interpolation to perform.
protected abstract void	transformInverse(int x, int y, float[] out)	Inverse transform a point.
protected void	transformSpace(Rectangle rect)	Forward transform a rectangle.

从类继承的方法 org.meteoinfo.image.filter.AbstractBufferedImageOp

clone, createCompatibleDestImage, getBounds2D, getPoint2D, getRenderingHints, getRGB, setRGB

从类继承的方法 java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

ZERO

public static final int ZERO

Treat pixels off the edge as zero.

另请参阅:

常量字段值

CLAMP

public static final int CLAMP

Clamp pixels to the image edges.

另请参阅:

常量字段值

WRAP

public static final int WRAP

Wrap pixels off the edge onto the oppsoite edge.

另请参阅:

常量字段值

RGB_CLAMP

public static final int RGB_CLAMP

Clamp pixels RGB to the image edges, but zero the alpha. This prevents gray borders on your image.

另请参阅:

常量字段值

NEAREST_NEIGHBOUR

public static final int NEAREST_NEIGHBOUR

Use nearest-neighbout interpolation.

另请参阅:

常量字段值

BILINEAR

public static final int BILINEAR

Use bilinear interpolation.

另请参阅:

常量字段值

edgeAction

protected int edgeAction

The action to take for pixels off the image edge.

interpolation

protected int interpolation

The type of interpolation to use.

transformedSpace

protected Rectangle transformedSpace

The output image rectangle.

originalSpace

protected Rectangle originalSpace

The input image rectangle.

构造器详细资料

TransformFilter

public TransformFilter()

方法详细资料

setEdgeAction

public void setEdgeAction(int edgeAction)

Set the action to perform for pixels off the edge of the image.

参数:

edgeAction - one of ZERO, CLAMP or WRAP

另请参阅:

getEdgeAction()

getEdgeAction

public int getEdgeAction()

Get the action to perform for pixels off the edge of the image.

返回:

one of ZERO, CLAMP or WRAP

另请参阅:

setEdgeAction(int)

setInterpolation

public void setInterpolation(int interpolation)

Set the type of interpolation to perform.

参数:

interpolation - one of NEAREST_NEIGHBOUR or BILINEAR

另请参阅:

getInterpolation()

getInterpolation

public int getInterpolation()

Get the type of interpolation to perform.

返回:

one of NEAREST_NEIGHBOUR or BILINEAR

另请参阅:

setInterpolation(int)

transformInverse

protected abstract void transformInverse(int x,
                                         int y,
                                         float[] out)

Inverse transform a point. This method needs to be overriden by all subclasses.

参数:

x - the X position of the pixel in the output image

y - the Y position of the pixel in the output image

out - the position of the pixel in the input image

transformSpace

protected void transformSpace(Rectangle rect)

Forward transform a rectangle. Used to determine the size of the output image.

参数:

rect - the rectangle to transform

filter

public BufferedImage filter(BufferedImage src,
                            BufferedImage dst)

filterPixelsNN

protected BufferedImage filterPixelsNN(BufferedImage dst,
                                       int width,
                                       int height,
                                       int[] inPixels,
                                       Rectangle transformedSpace)