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MinSpaceFrom Rule

Syntax: MinSpaceFrom [Region region_expr] expression dimension_in_microns [string]

For the parts of each edge of the source that are not coincident or overlapping with source-compatible figures but are coincident or overlapping with target figures which extend to the interior of the source figure, a rectangle extending normally from the edge out of the source figure by the given dimension is constructed. The test fails if the constructed rectangle is not completely covered by target figures. Figure 10.11 illustrates the test performed under this keyword, for no Region and an expression consisting of a single layer.

This is in many cases redundant with the MinNoOverlap test (see below) if applied to the result of the expression, if the expression is simply a layer name.

Figure 10.11: The MinSpaceFrom test. The rule is violated if the projection from the current layer, if any, is less than the supplied dimension.
\begin{figure}
\vspace{1.5ex}
\begin{center}
\epsfbox{minspacefrom.eps}
\end{center}\end{figure}



Stephen R. Whiteley 2006-10-23