Function
Returns a pattern design generated from a two-dimensional array.
duim-dcsduim-dcsmake-stencil array => stencil
<array>.
<stencil>.
Returns a pattern design that has (array-dimension array 0) cells in the vertical direction and (array-dimension array 1) cells in the horizontal direction. array must be a two-dimensional array of real numbers between 0 and 1 (inclusive) that represent opacities. The design in cell i,j of the resulting pattern is the value of (make-opacity (aref array i j)).