crosshatch_poly fills a polygon with slanted lines at a specified angle and separation. It is similar in concept to fill, except that the fill is a hatching, or just lines.

For example see the plot which was generated by the included file crosshatch_poly_test.m

It allows multiple overlapping hatching on different polygons, and can even be used to obtain a speckled affect. It has a fair number of options for different line styles, colors, widths, and background colors.

The one major limitation at present is that it can only be applied to convex polygons.