99 lines
3.1 KiB
HTML
99 lines
3.1 KiB
HTML
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<HTML>
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<HEAD>
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<STYLE type="text/css">
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H1 {color: black }
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H2 {color: maroon }
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H3 {color: #007090 }
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A.head:link {color: #0060a0 }
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A.head:visited {color: #3040c0 }
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A.head:active {color: white }
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A.head:hover {color: yellow }
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A.red:link {color: red }
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A.red:visited {color: maroon }
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A.red:active {color: yellow }
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</STYLE>
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</HEAD>
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<TITLE>Magic-7.3 Command Reference</TITLE>
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<BODY BACKGROUND=graphics/blpaper.gif>
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<H1> <IMG SRC=graphics/magic_title2.gif ALT="Magic VLSI Layout Tool Version 7.3">
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<IMG SRC=graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
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<H2>corner</H2>
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<HR>
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Make L-shaped wires inside the cursor box.
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<HR>
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<H3>Usage:</H3>
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<BLOCKQUOTE>
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<B>corner</B> <I>d1 d2</I> [<I>layers</I>] <BR><BR>
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<BLOCKQUOTE>
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where <I>d1</I> and <I>d2</I> are valid manhattan
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<A HREF=direction.html><I>directions</I></A>, and
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<I>layers</I> is an optional comma-separated list
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of valid paint layers.
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</BLOCKQUOTE>
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</BLOCKQUOTE>
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<H3>Summary:</H3>
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<BLOCKQUOTE>
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The <B>corner</B> command makes L-shaped wires inside
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the cursor box, filling first in direction <I>d1</I>,
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then in direction <I>d2</I>. If no <I>layers</I> are
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specified, then the cornering algorithm is applied to
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all layers crossing the cursor box boundary opposite
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to direction <I>d1</I>. If <I>layers</I> is specified,
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the cornering algorithm is applied only to those layers
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specified. The usage of <B>corner</B> is similar to
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that for the command <B>fill</B> (q.v.).
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</BLOCKQUOTE>
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<BLOCKQUOTE>
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Below is an example showing how the cornering algorithm
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responds to the command <B>corner n e</B>. First it
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finds layers crossing the cursor box boundary to the
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south (opposite to the first specified direction,
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<B>north</B>), and then extends these layers as wires
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first to the north, then to the east. The position of
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the layers leaving the box to the east is such that
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the same distance is maintained from each layer to the
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north side of the box at the exit point as it was
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from each layer to the east side of the box at the
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entrance point.
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<CENTER>
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<IMG SRC=graphics/corner1.gif>
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<IMG SRC=graphics/corner2.gif> <BR>
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<I>Figure 1: The cornering operation in response to the layout
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shown, given magic command <B>corner n e</B></I>.
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</CENTER>
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</BLOCKQUOTE>
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<H3>Implementation Notes:</H3>
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<BLOCKQUOTE>
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<B>corner</B> is implemented as a built-in <B>magic</B> command.
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</BLOCKQUOTE>
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<H3>Bugs:</H3>
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<BLOCKQUOTE>
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If the area in the box is not large enough for
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the cornering algorithm to produce the cornered
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wires, unpredictable results often result.
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</BLOCKQUOTE>
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<H3>See Also:</H3>
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<BLOCKQUOTE>
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<A HREF=diretion.html><I>direction</I></A> <BR>
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<A HREF=fill.html><B>fill</B></A> <BR>
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</BLOCKQUOTE>
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<P><IMG SRC=graphics/line1.gif><P>
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<TABLE BORDER=0>
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<TR>
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<TD> <A HREF=commands.html>Return to command index</A>
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</TR>
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</TABLE>
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<P><I>Last updated:</I> October 4, 2004 at 7:56am <P>
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</BODY>
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</HTML>
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