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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_06) on Wed Dec 13 16:20:12 PST 2006 --><TITLE>NormalGenerator (Java 3D 1.5.0)</TITLE><META NAME="keywords" CONTENT="com.sun.j3d.utils.geometry.NormalGenerator class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="NormalGenerator (Java 3D 1.5.0)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <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/GeometryInfo.html" title="class in com.sun.j3d.utils.geometry"><B>PREV CLASS</B></A> <A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html" title="class in com.sun.j3d.utils.geometry"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../index.html?com/sun/j3d/utils/geometry/NormalGenerator.html" target="_top"><B>FRAMES</B></A> <A HREF="NormalGenerator.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | <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><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">com.sun.j3d.utils.geometry</FONT><BR>Class NormalGenerator</H2><PRE>java.lang.Object <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>com.sun.j3d.utils.geometry.NormalGenerator</B></PRE><HR><DL><DT><PRE>public class <B>NormalGenerator</B><DT>extends java.lang.Object</DL></PRE><P>The NormalGenerator utility will calculate and fill in the normals of a GeometryInfo object. The calculated normals are estimated based on an analysis of the indexed coordinate information. If your data isn't indexed, index lists will be created.<p> <p> If two (or more) triangles in the model share the same coordinate index then the normal generator will attempt to generate one normal for the vertex, resulting in a "smooth" looking surface. If two coordinates don't have the same index then they will have two separate normals, even if they have the same position. This will result in a "crease" in your object. If you suspect that your data isn't properly indexed, call GeometryInfo.recomputeIndexes(). <p> <p> Of course, sometimes your model *has* a crease in it. That's what creaseAngle is. If two triangles' normals differ by more than creaseAngle, then the vertex will get two separate normals, creating a discontinuous crease in the model. This is perfect for the edge of a table or the corner of a cube, for instance.<P><P><HR><P><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/NormalGenerator.html#NormalGenerator()">NormalGenerator</A></B>()</CODE><BR> Constructor.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/NormalGenerator.html#NormalGenerator(double)">NormalGenerator</A></B>(double radians)</CODE><BR> Constructor.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></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="../../../../../com/sun/j3d/utils/geometry/NormalGenerator.html#generateNormals(com.sun.j3d.utils.geometry.GeometryInfo)">generateNormals</A></B>(<A HREF="../../../../../com/sun/j3d/utils/geometry/GeometryInfo.html" title="class in com.sun.j3d.utils.geometry">GeometryInfo</A> geom)</CODE><BR> Generate normals for the GeometryInfo object.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../com/sun/j3d/utils/geometry/NormalGenerator.html#getCreaseAngle()">getCreaseAngle</A></B>()</CODE><BR> Returns the current value of the crease angle, in radians.</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="../../../../../com/sun/j3d/utils/geometry/NormalGenerator.html#setCreaseAngle(double)">setCreaseAngle</A></B>(double radians)</CODE><BR> Set the crease angle.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TH></TR></TABLE><A NAME="NormalGenerator(double)"><!-- --></A><H3>NormalGenerator</H3><PRE>public <B>NormalGenerator</B>(double radians)</PRE><DL><DD>Constructor. Construct a NormalGenerator object with creaseAngle set to the given value.<P></DL><HR><A NAME="NormalGenerator()"><!-- --></A><H3>NormalGenerator</H3><PRE>public <B>NormalGenerator</B>()</PRE><DL><DD>Constructor. Construct a NormalGenerator object with creaseAngle set to 44 degrees (0.767944871 radians).<P></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Method Detail</B></FONT></TH></TR></TABLE><A NAME="generateNormals(com.sun.j3d.utils.geometry.GeometryInfo)"><!-- --></A><H3>generateNormals</H3><PRE>public void <B>generateNormals</B>(<A HREF="../../../../../com/sun/j3d/utils/geometry/GeometryInfo.html" title="class in com.sun.j3d.utils.geometry">GeometryInfo</A> geom)</PRE><DL><DD>Generate normals for the GeometryInfo object. If the GeometryInfo object didn't previously contain indexed data, indexes are made by collapsing identical positions into a single index. Any normal information previously contained in the GeometryInfo object is lost. Strips and Fans are converted into individual triangles for Normal generation, but are stitched back together if GeometryInfo.getGeometryArray() (or getIndexedGeometryArray()) is called without stripifying first.<P><DD><DL></DL></DD></DL><HR><A NAME="setCreaseAngle(double)"><!-- --></A><H3>setCreaseAngle</H3><PRE>public void <B>setCreaseAngle</B>(double radians)</PRE><DL><DD>Set the crease angle. If two triangles' normals differ by more than creaseAngle, then the vertex will get two separate normals, creating a discontinuous crease in the model. This is perfect for the edge of a table or the corner of a cube, for instance. Clamped to 0 <= creaseAngle <= PI. Optimizations are made for creaseAngle == 0 (facet normals) and creaseAngle == PI (smooth shading).<P><DD><DL></DL></DD></DL><HR><A NAME="getCreaseAngle()"><!-- --></A><H3>getCreaseAngle</H3><PRE>public double <B>getCreaseAngle</B>()</PRE><DL><DD>Returns the current value of the crease angle, in radians.<P><DD><DL></DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ======= START OF BOTTOM NAVBAR ====== --><A NAME="navbar_bottom"><!-- --></A><A HREF="#skip-navbar_bottom" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <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/GeometryInfo.html" title="class in com.sun.j3d.utils.geometry"><B>PREV CLASS</B></A> <A HREF="../../../../../com/sun/j3d/utils/geometry/Primitive.html" title="class in com.sun.j3d.utils.geometry"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../index.html?com/sun/j3d/utils/geometry/NormalGenerator.html" target="_top"><B>FRAMES</B></A> <A HREF="NormalGenerator.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | <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><A NAME="skip-navbar_bottom"></A><!-- ======== END OF BOTTOM NAVBAR ======= --><HR><font size="-1">Copyright (c) 2006 Sun Microsystems, Inc. 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