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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN""http://www.w3.org/TR/REC-html40/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Fri Apr 18 11:16:58 PDT 2003 --><TITLE>Primitive (Java 3D API)</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../../stylesheet.css" TITLE="Style"></HEAD><SCRIPT>function asd(){parent.document.title="Primitive (Java 3D API)";}</SCRIPT><BODY BGCOLOR="white" onload="asd();"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=3 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="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-all.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></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../com/sun/j3d/utils/geometry/NormalGenerator.html"><B>PREV CLASS</B></A> <A HREF="../../../../../com/sun/j3d/utils/geometry/Sphere.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="Primitive.html" TARGET="_top"><B>NO FRAMES</B></A> <SCRIPT> <!-- if(window==top) { document.writeln('<A HREF="../../../../../allclasses-noframe.html" TARGET=""><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT><A HREF="../../../../../allclasses-noframe.html" TARGET=""><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#field_summary">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: <A HREF="#field_detail">FIELD</A> | <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">com.sun.j3d.utils.geometry</FONT><BR>Class Primitive</H2><PRE>java.lang.Object | +--<A HREF="../../../../../javax/media/j3d/SceneGraphObject.html">javax.media.j3d.SceneGraphObject</A> | +--<A HREF="../../../../../javax/media/j3d/Node.html">javax.media.j3d.Node</A> | +--<A HREF="../../../../../javax/media/j3d/Group.html">javax.media.j3d.Group</A> | +--<B>com.sun.j3d.utils.geometry.Primitive</B></PRE><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../../com/sun/j3d/utils/geometry/Box.html">Box</A>, <A HREF="../../../../../com/sun/j3d/utils/geometry/Cone.html">Cone</A>, <A HREF="../../../../../com/sun/j3d/utils/geometry/Cylinder.html">Cylinder</A>, <A HREF="../../../../../com/sun/j3d/utils/geometry/Sphere.html">Sphere</A></DD></DL><HR><DL><DT>public abstract class <B>Primitive</B><DT>extends <A HREF="../../../../../javax/media/j3d/Group.html">Group</A></DL><P>Base class for all Java 3D primitives. By default all primitives with the same parameters share their geometry (e.g., you can have 50 shperes in your scene, but the geometry is stored only once). A change to one primitive will effect all shared nodes. Another implication of this implementation is that the capabilities of the geometry are shared, and once one of the shared nodes is live, the capabilities cannot be set. Use the GEOMETRY_NOT_SHARED flag if you do not wish to share geometry among primitives with the same parameters.<P><P><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html#ENABLE_APPEARANCE_MODIFY">ENABLE_APPEARANCE_MODIFY</A></B></CODE><BR> Specifies that the ALLOW_APPEARANCE_READ and ALLOW_APPEARANCE_WRITE bits are to be set on the generated geometry's Shape3D nodes.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html#ENABLE_GEOMETRY_PICKING">ENABLE_GEOMETRY_PICKING</A></B></CODE><BR> Specifies that the ALLOW_INTERSECT capability bit should be set on the generated geometry.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html#GENERATE_NORMALS">GENERATE_NORMALS</A></B></CODE><BR> Specifies that normals are generated along with the positions.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html#GENERATE_NORMALS_INWARD">GENERATE_NORMALS_INWARD</A></B></CODE><BR> Specifies that normals are to be flipped along the surface.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html#GENERATE_TEXTURE_COORDS">GENERATE_TEXTURE_COORDS</A></B></CODE><BR> Specifies that texture coordinates are generated along with the positions.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html#GEOMETRY_NOT_SHARED">GEOMETRY_NOT_SHARED</A></B></CODE><BR> Specifies that the geometry being created will not be shared by another scene graph node.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_javax.media.j3d.Group"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class javax.media.j3d.<A HREF="../../../../../javax/media/j3d/Group.html">Group</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../../javax/media/j3d/Group.html#ALLOW_CHILDREN_EXTEND">ALLOW_CHILDREN_EXTEND</A>, <A HREF="../../../../../javax/media/j3d/Group.html#ALLOW_CHILDREN_READ">ALLOW_CHILDREN_READ</A>, <A HREF="../../../../../javax/media/j3d/Group.html#ALLOW_CHILDREN_WRITE">ALLOW_CHILDREN_WRITE</A>, <A HREF="../../../../../javax/media/j3d/Group.html#ALLOW_COLLISION_BOUNDS_READ">ALLOW_COLLISION_BOUNDS_READ</A>, <A HREF="../../../../../javax/media/j3d/Group.html#ALLOW_COLLISION_BOUNDS_WRITE">ALLOW_COLLISION_BOUNDS_WRITE</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_javax.media.j3d.Node"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class javax.media.j3d.<A HREF="../../../../../javax/media/j3d/Node.html">Node</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../../javax/media/j3d/Node.html#ALLOW_AUTO_COMPUTE_BOUNDS_READ">ALLOW_AUTO_COMPUTE_BOUNDS_READ</A>, <A HREF="../../../../../javax/media/j3d/Node.html#ALLOW_AUTO_COMPUTE_BOUNDS_WRITE">ALLOW_AUTO_COMPUTE_BOUNDS_WRITE</A>, <A HREF="../../../../../javax/media/j3d/Node.html#ALLOW_BOUNDS_READ">ALLOW_BOUNDS_READ</A>, <A HREF="../../../../../javax/media/j3d/Node.html#ALLOW_BOUNDS_WRITE">ALLOW_BOUNDS_WRITE</A>, <A HREF="../../../../../javax/media/j3d/Node.html#ALLOW_COLLIDABLE_READ">ALLOW_COLLIDABLE_READ</A>, <A HREF="../../../../../javax/media/j3d/Node.html#ALLOW_COLLIDABLE_WRITE">ALLOW_COLLIDABLE_WRITE</A>, <A HREF="../../../../../javax/media/j3d/Node.html#ALLOW_LOCAL_TO_VWORLD_READ">ALLOW_LOCAL_TO_VWORLD_READ</A>, <A HREF="../../../../../javax/media/j3d/Node.html#ALLOW_PICKABLE_READ">ALLOW_PICKABLE_READ</A>, <A HREF="../../../../../javax/media/j3d/Node.html#ALLOW_PICKABLE_WRITE">ALLOW_PICKABLE_WRITE</A>, <A HREF="../../../../../javax/media/j3d/Node.html#ENABLE_COLLISION_REPORTING">ENABLE_COLLISION_REPORTING</A>, <A HREF="../../../../../javax/media/j3d/Node.html#ENABLE_PICK_REPORTING">ENABLE_PICK_REPORTING</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="../../../../../com/sun/j3d/utils/geometry/Primitive.html#Primitive()">Primitive</A></B>()</CODE><BR> Constructs a default primitive.</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>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html#cacheGeometry(int, float, float, float, int, int, int, com.sun.j3d.utils.geometry.GeomBuffer)">cacheGeometry</A></B>(int kind, float a, float b, float c, int d, int e, int flags, com.sun.j3d.utils.geometry.GeomBuffer geo)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../../javax/media/j3d/Appearance.html">Appearance</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html#getAppearance()">getAppearance</A></B>()</CODE><BR> Gets the appearance of the primitive (defaults to first subpart).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract <A HREF="../../../../../javax/media/j3d/Appearance.html">Appearance</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html#getAppearance(int)">getAppearance</A></B>(int partId)</CODE><BR> Gets the appearance of the specified part of the primitive.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected com.sun.j3d.utils.geometry.GeomBuffer</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html#getCachedGeometry(int, float, float, float, int, int, int)">getCachedGeometry</A></B>(int kind, float a, float b, float c,⌨️ 快捷键说明
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