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GeomUtil (Slick - The 2D Library)
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org.newdawn.slick.geom</FONT>
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Class GeomUtil</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.newdawn.slick.geom.GeomUtil</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <B>GeomUtil</B><DT>extends java.lang.Object</DL>
</PRE>
<P>
A set of utilities to play with geometry
<P>
<P>
<DL>
<DT><B>Author:</B></DT>
<DD>kevin</DD>
</DL>
<HR>
<P>
<!-- ======== NESTED CLASS SUMMARY ======== -->
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<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.HitResult.html" title="class in org.newdawn.slick.geom">GeomUtil.HitResult</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A lightweigtht description of a intersection between a shape and
line.</TD>
</TR>
</TABLE>
&nbsp;<!-- =========== FIELD SUMMARY =========== -->
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<CODE>&nbsp;float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#EDGE_SCALE">EDGE_SCALE</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The tolerance for determining direction change</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#EPSILON">EPSILON</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The tolerance for determining changes and steps</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/newdawn/slick/geom/GeomUtilListener.html" title="interface in org.newdawn.slick.geom">GeomUtilListener</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#listener">listener</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The listener to notify of operations</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#MAX_POINTS">MAX_POINTS</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The maximum number of points returned by an operation - prevents full lockups</TD>
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<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#GeomUtil()">GeomUtil</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/newdawn/slick/geom/Line.html" title="class in org.newdawn.slick.geom">Line</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#getLine(org.newdawn.slick.geom.Shape, float, float, int)">getLine</A></B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;shape,
float&nbsp;sx,
float&nbsp;sy,
int&nbsp;e)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get a line between two points in a shape</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/newdawn/slick/geom/Line.html" title="class in org.newdawn.slick.geom">Line</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#getLine(org.newdawn.slick.geom.Shape, int, int)">getLine</A></B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;shape,
int&nbsp;s,
int&nbsp;e)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get a line between two points in a shape</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/newdawn/slick/geom/GeomUtil.HitResult.html" title="class in org.newdawn.slick.geom">GeomUtil.HitResult</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#intersect(org.newdawn.slick.geom.Shape, org.newdawn.slick.geom.Line)">intersect</A></B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;shape,
<A HREF="../../../../org/newdawn/slick/geom/Line.html" title="class in org.newdawn.slick.geom">Line</A>&nbsp;line)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Intersect a line with a shape</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#rationalPoint(org.newdawn.slick.geom.Shape, int)">rationalPoint</A></B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;shape,
int&nbsp;p)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Rationalise a point in terms of a given shape</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#setListener(org.newdawn.slick.geom.GeomUtilListener)">setListener</A></B>(<A HREF="../../../../org/newdawn/slick/geom/GeomUtilListener.html" title="interface in org.newdawn.slick.geom">GeomUtilListener</A>&nbsp;listener)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the listener to be notified of geometry based operations</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#subtract(org.newdawn.slick.geom.Shape, org.newdawn.slick.geom.Shape)">subtract</A></B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;target,
<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;missing)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subtract one shape from another - note this is experimental and doesn't
currently handle islands</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/newdawn/slick/geom/GeomUtil.html#union(org.newdawn.slick.geom.Shape, org.newdawn.slick.geom.Shape)">union</A></B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;target,
<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;other)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Join to shapes together.</TD>
</TR>
</TABLE>
&nbsp;<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>
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&nbsp;
<P>
<!-- ============ FIELD DETAIL =========== -->
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<A NAME="EPSILON"><!-- --></A><H3>
EPSILON</H3>
<PRE>
public float <B>EPSILON</B></PRE>
<DL>
<DD>The tolerance for determining changes and steps
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="EDGE_SCALE"><!-- --></A><H3>
EDGE_SCALE</H3>
<PRE>
public float <B>EDGE_SCALE</B></PRE>
<DL>
<DD>The tolerance for determining direction change
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="MAX_POINTS"><!-- --></A><H3>
MAX_POINTS</H3>
<PRE>
public int <B>MAX_POINTS</B></PRE>
<DL>
<DD>The maximum number of points returned by an operation - prevents full lockups
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="listener"><!-- --></A><H3>
listener</H3>
<PRE>
public <A HREF="../../../../org/newdawn/slick/geom/GeomUtilListener.html" title="interface in org.newdawn.slick.geom">GeomUtilListener</A> <B>listener</B></PRE>
<DL>
<DD>The listener to notify of operations
<P>
<DL>
</DL>
</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<A NAME="GeomUtil()"><!-- --></A><H3>
GeomUtil</H3>
<PRE>
public <B>GeomUtil</B>()</PRE>
<DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
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<A NAME="subtract(org.newdawn.slick.geom.Shape, org.newdawn.slick.geom.Shape)"><!-- --></A><H3>
subtract</H3>
<PRE>
public <A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>[] <B>subtract</B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;target,
<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;missing)</PRE>
<DL>
<DD>Subtract one shape from another - note this is experimental and doesn't
currently handle islands
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>target</CODE> - The target to be subtracted from<DD><CODE>missing</CODE> - The shape to subtract
<DT><B>Returns:</B><DD>The newly created shapes</DL>
</DD>
</DL>
<HR>
<A NAME="setListener(org.newdawn.slick.geom.GeomUtilListener)"><!-- --></A><H3>
setListener</H3>
<PRE>
public void <B>setListener</B>(<A HREF="../../../../org/newdawn/slick/geom/GeomUtilListener.html" title="interface in org.newdawn.slick.geom">GeomUtilListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Set the listener to be notified of geometry based operations
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>listener</CODE> - The listener to be notified of geometry based operations</DL>
</DD>
</DL>
<HR>
<A NAME="union(org.newdawn.slick.geom.Shape, org.newdawn.slick.geom.Shape)"><!-- --></A><H3>
union</H3>
<PRE>
public <A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>[] <B>union</B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;target,
<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;other)</PRE>
<DL>
<DD>Join to shapes together. Note that the shapes must be touching
for this method to work.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>target</CODE> - The target shape to union with<DD><CODE>other</CODE> - The additional shape to union
<DT><B>Returns:</B><DD>The newly created shapes</DL>
</DD>
</DL>
<HR>
<A NAME="intersect(org.newdawn.slick.geom.Shape, org.newdawn.slick.geom.Line)"><!-- --></A><H3>
intersect</H3>
<PRE>
public <A HREF="../../../../org/newdawn/slick/geom/GeomUtil.HitResult.html" title="class in org.newdawn.slick.geom">GeomUtil.HitResult</A> <B>intersect</B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;shape,
<A HREF="../../../../org/newdawn/slick/geom/Line.html" title="class in org.newdawn.slick.geom">Line</A>&nbsp;line)</PRE>
<DL>
<DD>Intersect a line with a shape
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>shape</CODE> - The shape to compare<DD><CODE>line</CODE> - The line to intersect against the shape
<DT><B>Returns:</B><DD>The result describing the intersection or null if none</DL>
</DD>
</DL>
<HR>
<A NAME="rationalPoint(org.newdawn.slick.geom.Shape, int)"><!-- --></A><H3>
rationalPoint</H3>
<PRE>
public static int <B>rationalPoint</B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;shape,
int&nbsp;p)</PRE>
<DL>
<DD>Rationalise a point in terms of a given shape
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>shape</CODE> - The shape<DD><CODE>p</CODE> - The index of the point
<DT><B>Returns:</B><DD>The index that is rational for the shape</DL>
</DD>
</DL>
<HR>
<A NAME="getLine(org.newdawn.slick.geom.Shape, int, int)"><!-- --></A><H3>
getLine</H3>
<PRE>
public <A HREF="../../../../org/newdawn/slick/geom/Line.html" title="class in org.newdawn.slick.geom">Line</A> <B>getLine</B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;shape,
int&nbsp;s,
int&nbsp;e)</PRE>
<DL>
<DD>Get a line between two points in a shape
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>shape</CODE> - The shape<DD><CODE>s</CODE> - The index of the start point<DD><CODE>e</CODE> - The index of the end point
<DT><B>Returns:</B><DD>The line between the two points</DL>
</DD>
</DL>
<HR>
<A NAME="getLine(org.newdawn.slick.geom.Shape, float, float, int)"><!-- --></A><H3>
getLine</H3>
<PRE>
public <A HREF="../../../../org/newdawn/slick/geom/Line.html" title="class in org.newdawn.slick.geom">Line</A> <B>getLine</B>(<A HREF="../../../../org/newdawn/slick/geom/Shape.html" title="class in org.newdawn.slick.geom">Shape</A>&nbsp;shape,
float&nbsp;sx,
float&nbsp;sy,
int&nbsp;e)</PRE>
<DL>
<DD>Get a line between two points in a shape
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>shape</CODE> - The shape<DD><CODE>sx</CODE> - The x coordinate of the start point<DD><CODE>sy</CODE> - The y coordinate of the start point<DD><CODE>e</CODE> - The index of the end point
<DT><B>Returns:</B><DD>The line between the two points</DL>
</DD>
</DL>
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