renderableimageop.html

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<A NAME="getSources()"><!-- --></A><H3>
getSources</H3>
<PRE>
public <A HREF="../../../../java/util/Vector.html">Vector</A> <B>getSources</B>()</PRE>
<DL>
<DD>Returns a vector of RenderableImages that are the sources of
 image data for this RenderableImage. Note that this method may
 return an empty vector, to indicate that the image has no sources,
 or null, to indicate that no information is available.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#getSources()">getSources</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a (possibly empty) Vector of RenderableImages, or null.</DL>
</DD>
</DL>
<HR>

<A NAME="getProperty(java.lang.String)"><!-- --></A><H3>
getProperty</H3>
<PRE>
public <A HREF="../../../../java/lang/Object.html">Object</A> <B>getProperty</B>(<A HREF="../../../../java/lang/String.html">String</A>&nbsp;name)</PRE>
<DL>
<DD>Gets a property from the property set of this image.
 If the property name is not recognized, java.awt.Image.UndefinedProperty
 will be returned.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#getProperty(java.lang.String)">getProperty</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of the property to get, as a String.<DT><B>Returns:</B><DD>a reference to the property Object, or the value
         java.awt.Image.UndefinedProperty.</DL>
</DD>
</DL>
<HR>

<A NAME="getPropertyNames()"><!-- --></A><H3>
getPropertyNames</H3>
<PRE>
public <A HREF="../../../../java/lang/String.html">String</A>[] <B>getPropertyNames</B>()</PRE>
<DL>
<DD>Return a list of names recognized by getProperty.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#getPropertyNames()">getPropertyNames</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="isDynamic()"><!-- --></A><H3>
isDynamic</H3>
<PRE>
public boolean <B>isDynamic</B>()</PRE>
<DL>
<DD>Returns true if successive renderings (that is, calls to
 createRendering() or createScaledRendering()) with the same arguments
 may produce different results.  This method may be used to
 determine whether an existing rendering may be cached and
 reused.  The CRIF's isDynamic method will be called.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#isDynamic()">isDynamic</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getWidth()"><!-- --></A><H3>
getWidth</H3>
<PRE>
public float <B>getWidth</B>()</PRE>
<DL>
<DD>Gets the width in user coordinate space.  By convention, the
 usual width of a RenderableImage is equal to the image's aspect
 ratio (width divided by height).<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#getWidth()">getWidth</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the width of the image in user coordinates.</DL>
</DD>
</DL>
<HR>

<A NAME="getHeight()"><!-- --></A><H3>
getHeight</H3>
<PRE>
public float <B>getHeight</B>()</PRE>
<DL>
<DD>Gets the height in user coordinate space.  By convention, the
 usual height of a RenderedImage is equal to 1.0F.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#getHeight()">getHeight</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the height of the image in user coordinates.</DL>
</DD>
</DL>
<HR>

<A NAME="getMinX()"><!-- --></A><H3>
getMinX</H3>
<PRE>
public float <B>getMinX</B>()</PRE>
<DL>
<DD>Gets the minimum X coordinate of the rendering-independent image data.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#getMinX()">getMinX</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getMinY()"><!-- --></A><H3>
getMinY</H3>
<PRE>
public float <B>getMinY</B>()</PRE>
<DL>
<DD>Gets the minimum Y coordinate of the rendering-independent image data.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#getMinY()">getMinY</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="setParameterBlock(java.awt.image.renderable.ParameterBlock)"><!-- --></A><H3>
setParameterBlock</H3>
<PRE>
public <A HREF="../../../../java/awt/image/renderable/ParameterBlock.html">ParameterBlock</A> <B>setParameterBlock</B>(<A HREF="../../../../java/awt/image/renderable/ParameterBlock.html">ParameterBlock</A>&nbsp;paramBlock)</PRE>
<DL>
<DD>Change the current ParameterBlock of the operation, allowing
 editing of image rendering chains.  The effects of such a
 change will be visible when a new rendering is created from
 this RenderableImageOp or any dependent RenderableImageOp.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>paramBlock</CODE> - the new ParameterBlock.<DT><B>Returns:</B><DD>the old ParameterBlock.</DL>
</DD>
</DL>
<HR>

<A NAME="getParameterBlock()"><!-- --></A><H3>
getParameterBlock</H3>
<PRE>
public <A HREF="../../../../java/awt/image/renderable/ParameterBlock.html">ParameterBlock</A> <B>getParameterBlock</B>()</PRE>
<DL>
<DD>Returns a reference to the current parameter block.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="createScaledRendering(int, int, java.awt.RenderingHints)"><!-- --></A><H3>
createScaledRendering</H3>
<PRE>
public <A HREF="../../../../java/awt/image/RenderedImage.html">RenderedImage</A> <B>createScaledRendering</B>(int&nbsp;w,
                                           int&nbsp;h,
                                           <A HREF="../../../../java/awt/RenderingHints.html">RenderingHints</A>&nbsp;hints)</PRE>
<DL>
<DD>Creates a RenderedImage instance of this image with width w, and
 height h in pixels.  The RenderContext is built automatically
 with an appropriate usr2dev transform and an area of interest
 of the full image.  All the rendering hints come from hints
 passed in.

 <p> If w == 0, it will be taken to equal
 Math.round(h*(getWidth()/getHeight())).
 Similarly, if h == 0, it will be taken to equal
 Math.round(w*(getHeight()/getWidth())).  One of
 w or h must be non-zero or else an IllegalArgumentException 
 will be thrown.
 
 <p> The created RenderedImage may have a property identified
 by the String HINTS_OBSERVED to indicate which RenderingHints
 were used to create the image.  In addition any RenderedImages
 that are obtained via the getSources() method on the created
 RenderedImage may have such a property.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#createScaledRendering(int, int, java.awt.RenderingHints)">createScaledRendering</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>w</CODE> - the width of rendered image in pixels, or 0.<DD><CODE>h</CODE> - the height of rendered image in pixels, or 0.<DD><CODE>hints</CODE> - a RenderingHints object containg hints.<DT><B>Returns:</B><DD>a RenderedImage containing the rendered data.</DL>
</DD>
</DL>
<HR>

<A NAME="createDefaultRendering()"><!-- --></A><H3>
createDefaultRendering</H3>
<PRE>
public <A HREF="../../../../java/awt/image/RenderedImage.html">RenderedImage</A> <B>createDefaultRendering</B>()</PRE>
<DL>
<DD>Gets a RenderedImage instance of this image with a default
 width and height in pixels.  The RenderContext is built
 automatically with an appropriate usr2dev transform and an area
 of interest of the full image.  All the rendering hints come
 from hints passed in.  Implementors of this interface must be
 sure that there is a defined default width and height.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#createDefaultRendering()">createDefaultRendering</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a RenderedImage containing the rendered data.</DL>
</DD>
</DL>
<HR>

<A NAME="createRendering(java.awt.image.renderable.RenderContext)"><!-- --></A><H3>
createRendering</H3>
<PRE>
public <A HREF="../../../../java/awt/image/RenderedImage.html">RenderedImage</A> <B>createRendering</B>(<A HREF="../../../../java/awt/image/renderable/RenderContext.html">RenderContext</A>&nbsp;renderContext)</PRE>
<DL>
<DD>Creates a RenderedImage which represents this
 RenderableImageOp (including its Renderable sources) rendered
 according to the given RenderContext.

 <p> This method supports chaining of either Renderable or
 RenderedImage operations.  If sources in
 the ParameterBlock used to construct the RenderableImageOp are
 RenderableImages, then a three step process is followed:

 <ol>
 <li> mapRenderContext() is called on the associated CRIF for
 each RenderableImage source;
 <li> createRendering() is called on each of the RenderableImage sources
 using the backwards-mapped RenderContexts obtained in step 1,
 resulting in a rendering of each source;
 <li> ContextualRenderedImageFactory.create() is called
 with a new ParameterBlock containing the parameters of
 the RenderableImageOp and the RenderedImages that were created by the
 createRendering() calls.
 </ol>

 <p> If the elements of the source Vector of
 the ParameterBlock used to construct the RenderableImageOp are
 instances of RenderedImage, then the CRIF.create() method is
 called immediately using the original ParameterBlock.
 This provides a basis case for the recursion.

 <p> The created RenderedImage may have a property identified
 by the String HINTS_OBSERVED to indicate which RenderingHints
 (from the RenderContext) were used to create the image.
 In addition any RenderedImages
 that are obtained via the getSources() method on the created
 RenderedImage may have such a property.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html#createRendering(java.awt.image.renderable.RenderContext)">createRendering</A></CODE> in interface <CODE><A HREF="../../../../java/awt/image/renderable/RenderableImage.html">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>renderContext</CODE> - The RenderContext to use to perform the rendering.<DT><B>Returns:</B><DD>a RenderedImage containing the desired output image.</DL>
</DD>
</DL>
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