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Transform (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 Transform</H2>
<PRE>
java.lang.Object
|
+--<B>javax.microedition.m3g.Transform</B>
</PRE>
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<DL>
<DT>public class <B>Transform</B><DT>extends java.lang.Object</DL>
<P>
<p>A generic 4x4 floating point matrix, representing a transformation.By default, all methods dealing with Transform objects operate onarbitrary 4x4 matrices. Any exceptions to this rule are documentedexplicitly at the method level.</p><p>Even though arbitrary 4x4 matrices are generally allowed, usingnon-invertible (singular) matrices may produce undefined results oran arithmetic exception in some situations. Specifically, if themodelview matrix of an object is non-invertible, the results ofnormal vector transformation and fogging are undefined for thatobject.</p>
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<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#Transform()">Transform</A></B>()</CODE>
<BR>
Constructs a new Transform object and initializes it to the 4x4 identity matrix.</TD>
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<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#Transform(javax.microedition.m3g.Transform)">Transform</A></B>(<A HREF="../../../javax/microedition/m3g/Transform.html">Transform</A> transform)</CODE>
<BR>
Constructs a new Transform object and initializes it by copying in the contents of the given Transform.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#get(float[])">get</A></B>(float[] matrix)</CODE>
<BR>
Retrieves the contents of this transformation as a 16-element float array. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#invert()">invert</A></B>()</CODE>
<BR>
Inverts this matrix, if possible. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#postMultiply(javax.microedition.m3g.Transform)">postMultiply</A></B>(<A HREF="../../../javax/microedition/m3g/Transform.html">Transform</A> transform)</CODE>
<BR>
Multiplies this transformation from the right by the given transformation. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#postRotate(float, float, float, float)">postRotate</A></B>(float angle, float ax, float ay, float az)</CODE>
<BR>
Multiplies this transformation from the right by the given rotation matrix, specified in axis-angle form. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#postRotateQuat(float, float, float, float)">postRotateQuat</A></B>(float qx, float qy, float qz, float qw)</CODE>
<BR>
Multiplies this transformation from the right by the given rotation matrix, specified in quaternion form. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#postScale(float, float, float)">postScale</A></B>(float sx, float sy, float sz)</CODE>
<BR>
Multiplies this transformation from the right by the given scale matrix. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#postTranslate(float, float, float)">postTranslate</A></B>(float tx, float ty, float tz)</CODE>
<BR>
Multiplies this transformation from the right by the given translation matrix. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#set(float[])">set</A></B>(float[] matrix)</CODE>
<BR>
Sets this transformation by copying from the given 16-element float array. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#set(javax.microedition.m3g.Transform)">set</A></B>(<A HREF="../../../javax/microedition/m3g/Transform.html">Transform</A> transform)</CODE>
<BR>
Sets this transformation by copying the contents of the given Transform. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#setIdentity()">setIdentity</A></B>()</CODE>
<BR>
Replaces this transformation with the 4x4 identity matrix.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#transform(float[])">transform</A></B>(float[] vectors)</CODE>
<BR>
Multiplies the given array of 4D vectors with this matrix. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Transform.html#transform(javax.microedition.m3g.VertexArray, float[], boolean)">transform</A></B>(<A HREF="../../../javax/microedition/m3g/VertexArray.html">VertexArray</A> in, float[] out, boolean W)</CODE>
<BR>
Multiplies the elements of the given VertexArray with this matrix, storing the transformed values in a float array.</TD>
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