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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="content-type">
<title>Java 3D 1.5 Change Log</title>
</head>
<body>
<h1>Java 3D API version 1.5 Change Log</h1>
<p>Here are the proposed changes for Java 3D version 1.5. These
proposed changes are a results of discussion and collaboration with the
Java 3D community on java.net (see
<a href="https://java3d.dev.java.net">https://java3d.dev.java.net</a>).
They are already part of daily and periodic stable builds available on
java.net.</p>
<h2>I. Proposed Changes<br>
</h2>
<p>Here is the list of proposed changes for the Java 3D 1.5 API:<br>
</p>
<ol>
<li><a href="#NPOT_Textures">Non-power-of-two textures</a></li>
<li><a href="#NIO_Image_Buffer">NIO image buffer support for textures</a></li>
<li><a href="#By_Ref_Indices">By-reference support for geometry
indices</a></li>
<li><a href="#RenderingErrorListener">Rendering error listeners</a><br>
</li>
<li><a href="#vecmath_accessors_mutators">Vecmath accessors/mutators</a></li>
<li><a href="#Deprecated_API">Deprecated API</a></li>
</ol>
<p>For a complete description of these changes, please see the
proposed API specification (javadoc) for the 1.5 version of the
Java 3D API.
</p>
<h3><a name="NPOT_Textures"></a>1. Non-power-of-two textures</h3>
<p>We propose to add non-power-of-two textures to Java 3D 1.5.
Currently, the width, height, and depth of all textures must be an
exact power of two. Most graphics cards now support non-power-of-two
textures, so we propose to allow this in Java 3D. Since not all
graphics drivers support this feature, we will add a new
<code>"textureNonPowerOfTwoAvailable"</code> property to
Canvas3D.queryProperties that will indicate whether or not
non-power-of-two textures are supported. If this
property is set to <code>true</code>, then non-power-of-two textures
are rendered normally. If this property is set to <code>false</code>,
then the graphics driver or card does not support non-power-of-two
textures; texture mapping will be disabled if non-power-of-two
textures are rendered on a Canvas3D that doesn't support them.<br>
</p>
<p><br>
</p>
<h3><a name="NIO_Image_Buffer"></a>2. NIO image buffer support for
textures</h3>
<p>We propose to create a new javax.media.j3d.NioImageBuffer class, a
wrapper for an image whose DataBuffer
is specified via an appropriate subclass of java.nio.Buffer:
ByteBuffer or IntBuffer,
depending on the type of image. When using IntBuffer,
the byte order of the buffer must match the native byte order of the
underlying platform.
</p>
<p>New public classes:<br>
</p>
<ul>
<code><span style="font-weight: bold; text-decoration: underline;"></span>public
class <span style="font-weight: bold;">NioImageBuffer</span> extends
Object<br>
</code>
</ul>
<p>New constructors and methods:<br>
</p>
<ul>
<code><span style="font-weight: bold; text-decoration: underline;">ImageComponent</span><br>
New enums:<br>
public enum ImageClass {<br>
BUFFERED_IMAGE,
RENDERED_IMAGE, NIO_IMAGE_BUFFER<br>
}<br>
<br>
New methods:<br>
public ImageClass getImageClass()<br>
<br>
<span style="font-weight: bold; text-decoration: underline;">ImageComponent2D</span><br>
New constructors:<br>
public ImageComponent2D(int format,<br>
NioImageBuffer image,<br>
boolean byReference, boolean yUp)<br>
<br>
New methods:<br>
public void set(NioImageBuffer image)<br>
public NioImageBuffer getNioImage()<br>
<br>
<span style="font-weight: bold; text-decoration: underline;">ImageComponent3D</span><br>
New constructors:<br>
public ImageComponent3D(int format, NioImageBuffer[]
images,<br>
boolean byReference, boolean yUp)<br>
<br>
New methods:<br>
public void set(NioImageBuffer[] images)<br>
public void set(int index, NioImageBuffer image)<br>
public NioImageBuffer[] getNioImage()<br>
public NioImageBuffer getNioImage(int index)<br>
</code>
</ul>
<p><br>
</p>
<h3><a name="By_Ref_Indices"></a>3. By-reference support for geometry
indices<br>
</h3>
<p>We propose to add support for setting the coordinate indices
of IndexedGeometryArray objects "by-reference". Currently, the
coordinate indices array is
set "by-copy" even for by-reference geometry, resulting in excessive
memory usage. Though the
excess memory usage is temporary, since it happens only at the time
of creating an internal copy of the user-specified indices array,
nevertheless it can turn out to be of significant concern especially
for very large geometries or for dynamically changing geometry. The
fact that the
graphics drivers have long supported this feature makes the
incorporation of this feature attractive, as
it entails no special hardware support.<br>
</p>
<p>New fields and methods:<br>
</p>
<ul>
<code><span style="font-weight: bold; text-decoration: underline;">GeometryArray</span><br>
New fields:<br>
public static final int BY_REFERENCE_INDICES<br>
<br>
<span style="text-decoration: underline; font-weight: bold;">IndexedGeometryArray</span><br>
New methods:<br>
public void setCoordIndicesRef(int
coordIndices[])<br>
public int[] getCoordIndicesRef()<br>
</code>
</ul>
<p><br>
</p>
<h3><a name="RenderingErrorListener"></a>4. Rendering error listener</h3>
<p>We propose to add a rendering error class and error listener
interface that applications can use to detect rendering errors that are
caught by the Java 3D rendering system. The default error listener, if
no user-specified error listeners are added, prints out the error
message and exits.<br>
</p>
<p>The following new classes and interfaces are proposed:</p>
<ul>
<code>public class RenderingError extends <span
style="font-weight: bold;">Object</span><br>
public interface <span style="font-weight: bold;">RenderingErrorListener</span><br>
</code>
</ul>
<p>The following new methods are proposed:</p>
<ul>
<code><span style="font-weight: bold; text-decoration: underline;">VirtualUniverse</span><br>
New methods:<br>
public static void
addRenderingErrorListener(RenderingErrorListener listener)<br>
public static void
removeRenderingErrorListener(RenderingErrorListener listener)<br>
</code>
</ul>
<p><br>
</p>
<h3><a name="vecmath_accessors_mutators"></a>5. Vecmath
accessors/mutators</h3>
<p>We propose to add accessors and mutators to all vecmath classes with
publicly accessible fields. This follows the bean pattern, and allows
these classes to be read and written by bean-aware tools, for example,
the XMLEncoder. The following
classes need public accessors and mutators (e.g., setX(), getX(),
setY(), and so forth):<br>
</p>
<ul>
<code>Matrix3d<br>
Matrix3f<br>
Matrix4d<br>
Matrix4f<br>
Tuple2d<br>
Tuple2f<br>
Tuple2i<br>
Tuple3b<br>
Tuple3d<br>
Tuple3f<br>
Tuple3i<br>
Tuple4b<br>
Tuple4d<br>
Tuple4f<br>
Tuple4i<br>
</code>
</ul>
<p><br>
</p>
<h3><a name="Deprecated_API"></a>6. Deprecated API</h3>
<p>We propose to deprecate the following fields and methods relating to
the obsolete texture functionality.
</p>
<ul>
<code><span style="font-weight: bold; text-decoration: underline;">Texture2D</span><br>
Deprecated fields:<br>
public static final int ALLOW_DETAIL_TEXTURE_READ<br>
public static final int LINEAR_DETAIL<br>
public static final int LINEAR_DETAIL_RGB<br>
public static final int LINEAR_DETAIL_ALPHA<br>
public static final int DETAIL_ADD<br>
public static final int DETAIL_MODULATE<br>
<br>
Deprecated methods:<br>
public void setDetailImage(ImageComponent2D
detailTexture)<br>
public ImageComponent2D getDetailImage()<br>
public void setDetailTextureMode(int mode)<br>
public int getDetailTextureMode()<br>
public void setDetailTextureLevel(int level)<br>
public int getDetailTextureLevel()<br>
public void setDetailTextureFunc(float[] lod,
float[] pts)<br>
public void setDetailTextureFunc(Point2f[] pts)<br>
public int getDetailTextureFuncPointsCount()<br>
public void getDetailTextureFunc(float[] lod,
float[] pts)<br>
public void getDetailTextureFunc(Point2f[] pts)<br>
<br>
<span style="font-weight: bold; text-decoration: underline;">ImageComponent</span><br>
Deprecated methods:<br>
public void setYUp(boolean yUp)<br>
</code>
</ul>
<p><br>
</p>
<p>
</p>
<h2>II. Accepted Changes</h2>
<p><br>
</p>
<h2>III. Deferred Changes</h2>
<p><br>
</p>
</body>
</html>
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