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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Apr 27 23:33:58 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class AreaAveragingScaleFilter</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/AreaAveragingScaleFilter.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../java/awt/image/AffineTransformOp.html"><B>PREV CLASS</B></A> <A HREF="../../../java/awt/image/BandCombineOp.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="AreaAveragingScaleFilter.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | <A HREF="#fields_inherited_from_class_java.awt.image.ReplicateScaleFilter">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">java.awt.image</FONT><BR>Class AreaAveragingScaleFilter</H2><PRE><A HREF="../../../java/lang/Object.html">java.lang.Object</A> | +--<A HREF="../../../java/awt/image/ImageFilter.html">java.awt.image.ImageFilter</A> | +--<A HREF="../../../java/awt/image/ReplicateScaleFilter.html">java.awt.image.ReplicateScaleFilter</A> | +--<B>java.awt.image.AreaAveragingScaleFilter</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../java/lang/Cloneable.html">Cloneable</A>, <A HREF="../../../java/awt/image/ImageConsumer.html">ImageConsumer</A></DD></DL><HR><DL><DT>public class <B>AreaAveragingScaleFilter</B><DT>extends <A HREF="../../../java/awt/image/ReplicateScaleFilter.html">ReplicateScaleFilter</A></DL><P>An ImageFilter class for scaling images using a simple area averaging algorithm that produces smoother results than the nearest neighbor algorithm. This class extends the basic ImageFilter Class to scale an existing image and provide a source for a new image containing the resampled image. The pixels in the source image are blended to produce pixels for an image of the specified size. The blending process is analogous to scaling up the source image to a multiple of the destination size using pixel replication and then scaling it back down to the destination size by simply averaging all the pixels in the supersized image that fall within a given pixel of the destination image. If the data from the source is not delivered in TopDownLeftRight order then the filter will back off to a simple pixel replication behavior and utilize the requestTopDownLeftRightResend() method to refilter the pixels in a better way at the end. It is meant to be used in conjunction with a FilteredImageSource object to produce scaled versions of existing images.<P><DL><DT><B>See Also: </B><DD><A HREF="../../../java/awt/image/FilteredImageSource.html"><CODE>FilteredImageSource</CODE></A>, <A HREF="../../../java/awt/image/ReplicateScaleFilter.html"><CODE>ReplicateScaleFilter</CODE></A>, <A HREF="../../../java/awt/image/ImageFilter.html"><CODE>ImageFilter</CODE></A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="fields_inherited_from_class_java.awt.image.ReplicateScaleFilter"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class java.awt.image.<A HREF="../../../java/awt/image/ReplicateScaleFilter.html">ReplicateScaleFilter</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../java/awt/image/ReplicateScaleFilter.html#destHeight">destHeight</A>, <A HREF="../../../java/awt/image/ReplicateScaleFilter.html#destWidth">destWidth</A>, <A HREF="../../../java/awt/image/ReplicateScaleFilter.html#outpixbuf">outpixbuf</A>, <A HREF="../../../java/awt/image/ReplicateScaleFilter.html#srccols">srccols</A>, <A HREF="../../../java/awt/image/ReplicateScaleFilter.html#srcHeight">srcHeight</A>, <A HREF="../../../java/awt/image/ReplicateScaleFilter.html#srcrows">srcrows</A>, <A HREF="../../../java/awt/image/ReplicateScaleFilter.html#srcWidth">srcWidth</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_java.awt.image.ImageFilter"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class java.awt.image.<A HREF="../../../java/awt/image/ImageFilter.html">ImageFilter</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../java/awt/image/ImageFilter.html#consumer">consumer</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_java.awt.image.ImageConsumer"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface java.awt.image.<A HREF="../../../java/awt/image/ImageConsumer.html">ImageConsumer</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../java/awt/image/ImageConsumer.html#COMPLETESCANLINES">COMPLETESCANLINES</A>, <A HREF="../../../java/awt/image/ImageConsumer.html#IMAGEABORTED">IMAGEABORTED</A>, <A HREF="../../../java/awt/image/ImageConsumer.html#IMAGEERROR">IMAGEERROR</A>, <A HREF="../../../java/awt/image/ImageConsumer.html#RANDOMPIXELORDER">RANDOMPIXELORDER</A>, <A HREF="../../../java/awt/image/ImageConsumer.html#SINGLEFRAME">SINGLEFRAME</A>, <A HREF="../../../java/awt/image/ImageConsumer.html#SINGLEFRAMEDONE">SINGLEFRAMEDONE</A>, <A HREF="../../../java/awt/image/ImageConsumer.html#SINGLEPASS">SINGLEPASS</A>, <A HREF="../../../java/awt/image/ImageConsumer.html#STATICIMAGEDONE">STATICIMAGEDONE</A>, <A HREF="../../../java/awt/image/ImageConsumer.html#TOPDOWNLEFTRIGHT">TOPDOWNLEFTRIGHT</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../java/awt/image/AreaAveragingScaleFilter.html#AreaAveragingScaleFilter(int, int)">AreaAveragingScaleFilter</A></B>(int width, int height)</CODE><BR> Constructs an AreaAveragingScaleFilter that scales the pixels from its source Image as specified by the width and height parameters.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../java/awt/image/AreaAveragingScaleFilter.html#setHints(int)">setHints</A></B>(int hints)</CODE><BR> Detect if the data is being delivered with the necessary hints to allow the averaging algorithm to do its work.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../java/awt/image/AreaAveragingScaleFilter.html#setPixels(int, int, int, int, java.awt.image.ColorModel, byte[], int, int)">setPixels</A></B>(int x, int y, int w, int h, <A HREF="../../../java/awt/image/ColorModel.html">ColorModel</A> model, byte[] pixels, int off, int scansize)</CODE><BR> Combine the components for the delivered byte pixels into the accumulation arrays and send on any averaged data for rows of pixels that are complete.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../java/awt/image/AreaAveragingScaleFilter.html#setPixels(int, int, int, int, java.awt.image.ColorModel, int[], int, int)">setPixels</A></B>(int x, int y, int w, int h, <A HREF="../../../java/awt/image/ColorModel.html">ColorModel</A> model, int[] pixels, int off, int scansize)</CODE><BR> Combine the components for the delivered int pixels into the accumulation arrays and send on any averaged data for rows of pixels that are complete.</TD>⌨️ 快捷键说明
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