📄 mt0468.htm

📁 详细介绍Java 3D编程的一本电子书
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<TITLE>Summary</TITLE>
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<CENTER>Picking shapes</CENTER>
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<CENTER><B><I>Summary</I></B></CENTER>
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<DD><LI>Picking selects a shape pointed at by the user
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	<DD><LI>The pointing device can be anything (often the mouse)
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<DD><LI>Pickability is enabled on a per-node basis
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<DD><LI>Picking looks for the intersection of a <B><TT><FONT COLOR=#00FF00 SIZE=+2>PickShape</FONT></TT></B>
	with shape bounding volumes
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	<DD><LI><B><TT><FONT COLOR=#00FF00 SIZE=+2>PickBounds</FONT></TT></B>,
	<B><TT><FONT COLOR=#00FF00 SIZE=+2>PickPoint</FONT></TT></B>,
	<B><TT><FONT COLOR=#00FF00 SIZE=+2>PickRay</FONT></TT></B>, and
	<B><TT><FONT COLOR=#00FF00 SIZE=+2>PickSegment</FONT></TT></B>,
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<DD><LI>A pick is initiated on a <B><TT><FONT COLOR=#00FF00 SIZE=+2>Locale</FONT></TT></B> or <B><TT><FONT COLOR=#00FF00 SIZE=+2>BranchGroup</FONT></TT></B>
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<DD><LI>A pick returns one or more <B><TT><FONT COLOR=#00FF00 SIZE=+2>SceneGraphPath</FONT></TT></B>s for
	the shapes hit by the pick
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