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Fog (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 Fog</H2>
<PRE>
java.lang.Object
|
+--<A HREF="../../../javax/microedition/m3g/Object3D.html">javax.microedition.m3g.Object3D</A>
|
+--<B>javax.microedition.m3g.Fog</B>
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<DT>public class <B>Fog</B><DT>extends <A HREF="../../../javax/microedition/m3g/Object3D.html">Object3D</A></DL>
<P>
<p>An Appearance component encapsulating attributes for fogging.</p> <h3>Implementation guidelines</h3><p>Fogging is done according to the OpenGL 1.3 specification, section3.10, with the exception that the EXP2 mode is not supported. The sameapproximations in fog computation are allowed as in OpenGL: Firstly,the fog function may be evaluated at vertices and then interpolatedto obtain the per-fragment values, and secondly, the distance from thecamera to the fragment center may be approximated with the fragment'sZ coordinate.</p>
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<DT><B>See Also:</B><DD><a href="../../../file-format.html#Fog">Binary format</a></DL>
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<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#EXPONENTIAL">EXPONENTIAL</A></B></CODE>
<BR>
A parameter to <code>setMode</code>, specifying exponential fog. </TD>
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<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#LINEAR">LINEAR</A></B></CODE>
<BR>
A parameter to <code>setMode</code>, specifying linear fog. </TD>
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<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#Fog()">Fog</A></B>()</CODE>
<BR>
Constructs a new Fog object with default values. </TD>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#getColor()">getColor</A></B>()</CODE>
<BR>
Retrieves the current color of this Fog. </TD>
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<CODE> float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#getDensity()">getDensity</A></B>()</CODE>
<BR>
Retrieves the fog density of exponential fog.</TD>
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<CODE> float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#getFarDistance()">getFarDistance</A></B>()</CODE>
<BR>
Retrieves the linear fog far distance.</TD>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#getMode()">getMode</A></B>()</CODE>
<BR>
Retrieves the current fog mode.</TD>
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<CODE> float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#getNearDistance()">getNearDistance</A></B>()</CODE>
<BR>
Retrieves the linear fog near distance.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#setColor(int)">setColor</A></B>(int RGB)</CODE>
<BR>
Sets the color of this Fog. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#setDensity(float)">setDensity</A></B>(float density)</CODE>
<BR>
Sets the fog density for exponential fog.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#setLinear(float, float)">setLinear</A></B>(float near, float far)</CODE>
<BR>
Sets the near and far distances for linear fog. </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/m3g/Fog.html#setMode(int)">setMode</A></B>(int mode)</CODE>
<BR>
Sets the fog mode to either linear or exponential.</TD>
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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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<TR BGCOLOR="white" CLASS="TableRowColor">
<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><B>Methods inherited from class java.lang.Object</B></TD>
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<TD><CODE>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="EXPONENTIAL"><!-- --></A><H3>
EXPONENTIAL</H3>
<PRE>
public static final int <B>EXPONENTIAL</B></PRE>
<DL>
<DD><p>A parameter to <code>setMode</code>, specifying exponential fog. The fog blending factor <i>f</i> is calculated according to the formula:</p>⌨️ 快捷键说明
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