magic/doc/html/wind3d/cutbox.html

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<TITLE>Magic-7.3 Command Reference</TITLE>
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<H1> <IMG SRC=../graphics/magic_title2.gif ALT="Magic VLSI Layout Tool Version 7.3">
<IMG SRC=../graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
<H2>cutbox</H2>
<HR>
Set a clipping rectangle for the 3D view.
<HR>
<H3>Usage:</H3>
<BLOCKQUOTE>
<B>cutbox</B> [<B>none</B>|<B>box</B>|<I>llx lly urx ury</I>] <BR><BR>
<BLOCKQUOTE>
where <I>llx lly urx ury</I> are points of a rectangle in the
coordinate system of <B>magic</B>.
</BLOCKQUOTE>
</BLOCKQUOTE>
<H3>Summary:</H3>
<BLOCKQUOTE>
The <B>cutbox</B> command generates a clipping rectangle on the
layout. This is used for two purposes: Limiting the amount of
output to generate for a large layout, and to create vertical
or orthogonal cross-sections of a layout. <P>
<B>cutbox none</B> removes any existing cutbox. <B>cutbox box</B>
creates a cutbox equal to the cursor box boundary. Otherwise,
<B>cutbox</B> is followed by two coordinate pairs representing
the cutbox lower-left and upper-right corners, in <B>magic</B>
(<I>not</I> CIF/GDS) units. <P>
</BLOCKQUOTE>
<H3>Implementation Notes:</H3>
<BLOCKQUOTE>
<B>cutbox</B> is implemented as a built-in <B>wind3d</B>
window command in <B>magic</B>. It can only be invoked from
a window created with the <B>specialopen wind3d</B> command,
or the <B>render</B> procedure. Note that the <B>wind3d</B>
window is only available when magic is compiled with the OpenGL
graphics option and invoked with <B>magic -d OGL</B>. <P>
Note that macros of the <B>wind3d</B> window are hard-coded,
and cannot be changed with the <B>macro</B>, <B>gmacro</B>, or
<B>imacro</B> commands. There is no "<TT>:</TT>" macro for
entering commands; to enter commands from the command-line,
use the <A HREF=../tk_path_name.html> <I>tk_path_name</I></A>
command. The default Tk path name of the <B>wind3d</B> window
is "<TT>.magic3d</TT>".
</BLOCKQUOTE>
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<TABLE BORDER=0>
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<TD> <A HREF=../commands.html>Return to command index</A>
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<P><I>Last updated:</I> October, 2004<P>
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