mt0061.htm

来自「详细介绍Java 3D编程的一本电子书」· HTM 代码 · 共 97 行

<HTML>
<HEAD>
<!-- Created by mktalk.pl on 5/4/99 at 4:41:12 PM -->
<TITLE>Controlling access capabilities</TITLE>
</HEAD>

<BODY
	
	BGCOLOR=#000000
	TEXT=#FFFFFF
	LINK=#FFFFFF
	ALINK=#00FF00
	VLINK=#888888
>
<TABLE WIDTH=100%
	BORDER=0
	CELLSPACING=0
	CELLPADDING=0
>
<TR >
<TD ALIGN=CENTER WIDTH=24%>
	<FONT
		COLOR=#FFFFFF
		SIZE=-1
	>
	<A HREF=mt0000.htm><B><IMG SRC="../images/arwtoc2.gif" BORDER=0 WIDTH=24 HEIGHT=24></B></A>
</TD>
<TD ALIGN=CENTER WIDTH=24%>
	<FONT
		COLOR=#FFFFFF
		SIZE=-1
	>
	<A HREF=mt0024.htm><B><IMG SRC="../images/arwndx2.gif" BORDER=0 WIDTH=24 HEIGHT=24></B></A>
</TD>
<TD ALIGN=CENTER WIDTH=24%>
	<FONT
		COLOR=#FFFFFF
		SIZE=-1
	>
	<A HREF=mt0060.htm><B><IMG SRC="../images/arwprev2.gif" BORDER=0 WIDTH=24 HEIGHT=24></B></A>
</TD>
<TD ALIGN=CENTER WIDTH=24%>
	<FONT
		COLOR=#FFFFFF
		SIZE=-1
	>
	<A HREF=mt0062.htm><B><IMG SRC="../images/arwnext2.gif" BORDER=0 WIDTH=24 HEIGHT=24></B></A>
</TD>
<TD ALIGN=CENTER WIDTH=4%>
	<FONT
		COLOR=#FFFFFF
		SIZE=-1
	>
	61
</TD>
</TR>
</TABLE>
<P>

<FONT COLOR=#FFFF00 SIZE=+0>
<CENTER>Building 3D content with a scene graph</CENTER>
<FONT COLOR=#FFFF00 SIZE=+3>
<CENTER><B><I>Controlling access capabilities</I></B></CENTER>
<CENTER><IMG SRC="../images/red.jpg" HEIGHT=2 WIDTH=70% BORDER=0></CENTER>
<P>
<FONT COLOR=#FFFFFF SIZE=+2>

<DL>
<DD><LI>Set capabilities while you build your content
<DL>
	<DD><PRE><B><TT><FONT COLOR=#00FF00 SIZE=+2>Shape3D myShape = new Shape3D( myGeom, myAppear );
myShape.setCapability( Shape3D.ALLOW_APPEARANCE_WRITE );</FONT></TT></B></PRE>
</DL>
<P>
<DD><LI>After a node is live, change attributes that have enabled capabilities
<DL>
	<DD><PRE><B><TT><FONT COLOR=#00FF00 SIZE=+2>myShape.setAppearance( newAppear );  // allowed</FONT></TT></B></PRE>
</DL>
<P>
<DD><LI>But you cannot change attributes for which you do not have
	capabilities set
<DL>
	<DD><PRE><B><TT><FONT COLOR=#00FF00 SIZE=+2>myShape.setGeometry( newGeom );  // error!</FONT></TT></B></PRE>
</DL>
</DL>


	<!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~>
	<! SUMMARY ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~>
	<!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~>

<!------------------------------------------------------------------------>

</BODY>
</HTML>