mirror of
https://github.com/RTimothyEdwards/magic.git
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Tim Edwards
a816da60f9
since all of the title images still had 8.2, and the title text still said 7.3 or 7.4, having not been updated for a long time.
78 lines
2.6 KiB
HTML
78 lines
2.6 KiB
HTML
<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-8.3 Command Reference</TITLE>
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<BODY BACKGROUND=graphics/blpaper.gif>
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<H1> <IMG SRC=graphics/magic_title8_3.png ALT="Magic VLSI Layout Tool Version 8.3">
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<IMG SRC=graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
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<H2>spliterase</H2>
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<HR>
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Paint into the cursor box, splitting the box diagonally with one layer
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forming a right triangle in one corner and space or another layer in
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the other.
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<HR>
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<H3>Usage:</H3>
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<BLOCKQUOTE>
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<B>spliterase</B> <I>dir layer</I> <BR><BR>
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<BLOCKQUOTE>
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where <I>dir</I> is a valid non-Manhattan direction indicating
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the direction of the right angle corner of the right triangle
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to be erased. Any paint of layer type <I>layer</I> is erased
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from this triangular area.
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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>spliterase</B> command implements a form of non-Manhattan
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geometry that conforms to the corner-stitched tile database
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format used by <B>magic</B> for painting and searching operations
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in a plane. It lets a rectangular area, as defined by the
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position of the cursor box, be split diagonally, with one half
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containing one layer type, and the other half containing
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another. While the <B>splitpaint</B> command generates
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non-Manhattan areas by adding paint in a triangular area,
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<B>spliterase</B> creates non-Manhattan areas by subtracting
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paint from a triangular area. <P>
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Note that <B>spliterase</B>, like <B>splitpaint</B>, is somewhat
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cumbersome to use; to generate diagonal wires, use the <B>wire
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segment</B> command instead, which is also able to compute mitred
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joints between segments at different angles. <P>
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</BLOCKQUOTE>
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<H3>Implementation Notes:</H3>
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<BLOCKQUOTE>
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<B>spliterase</B> is implemented as a built-in command in <B>magic</B>.
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</BLOCKQUOTE>
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<H3>See Also:</H3>
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<BLOCKQUOTE>
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<A HREF=splitpaint.html><B>splitpaint</B></A> <BR>
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<A HREF=wire.html><B>wire</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> March 7, 2020 at 1:06pm <P>
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</BODY>
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</HTML>
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