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IndexBuffer (Mobile 3D Graphics API (M3G))
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<EM><B>Nov 19, 2003</B></EM></EM>
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javax.microedition.m3g</FONT>
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Class IndexBuffer</H2>
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java.lang.Object
|
+--<A HREF="../../../javax/microedition/m3g/Object3D.html">javax.microedition.m3g.Object3D</A>
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+--<B>javax.microedition.m3g.IndexBuffer</B>
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<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../javax/microedition/m3g/TriangleStripArray.html">TriangleStripArray</A></DD>
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<DT>public abstract class <B>IndexBuffer</B><DT>extends <A HREF="../../../javax/microedition/m3g/Object3D.html">Object3D</A></DL>
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<p>Defines how to connect vertices to form a geometric object.</p><p>Each IndexBuffer object defines a <i>submesh</i>, which is thebasic rendering primitive in this API. In order to be rendered, asubmesh must be associated with a VertexBuffer, defining the vertexattributes, and an Appearance, defining the surface attributes.</p><p>IndexBuffer is an abstract class that provides no functionality.The actual index values as well as their interpretation are definedin each derived class. Currently, there is only one derived class,TriangleStripArray, which defines a submesh consisting of trianglestrips. Other derived classes may be added in future revisions ofthis API, to support, for example, triangle lists, triangle fans,line strips and quad strips.</p><h3>Deferred exceptions</h3><p>The indices in an IndexBuffer are only validated when rendering orpicking. An exception is thrown by the <code>render</code> methods inGraphics3D and the <code>pick</code> methods in Group, if any of theindices are greater than or equal to the number of vertices in theassociated VertexBuffer. The indices cannot be validated earlier,because they are allowed to be invalid at all other times except whenthey are used by the implementation, that is, when rendering orpicking.</p>
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<DT><B>See Also:</B><DD><a href="../../../file-format.html#IndexBuffer">Binary format</a></DL>
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<TD><B>Methods inherited from class javax.microedition.m3g.<A HREF="../../../javax/microedition/m3g/Object3D.html">Object3D</A></B></TD>
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<TD><CODE><A HREF="../../../javax/microedition/m3g/Object3D.html#addAnimationTrack(javax.microedition.m3g.AnimationTrack)">addAnimationTrack</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#animate(int)">animate</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#duplicate()">duplicate</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#find(int)">find</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#getAnimationTrack(int)">getAnimationTrack</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#getAnimationTrackCount()">getAnimationTrackCount</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#getReferences(javax.microedition.m3g.Object3D[])">getReferences</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#getUserID()">getUserID</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#getUserObject()">getUserObject</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#removeAnimationTrack(javax.microedition.m3g.AnimationTrack)">removeAnimationTrack</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#setUserID(int)">setUserID</A>, <A HREF="../../../javax/microedition/m3g/Object3D.html#setUserObject(java.lang.Object)">setUserObject</A></CODE></TD>
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<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
<EM><B>Nov 19, 2003</B></EM></EM>
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