  We seek to cover a parametric domain with a set of evenly spaced bands which
number and widthvaries according to a density field. We propose an implicit
procedural algorithm, that generates theband pattern from a pixel shader and
adapts to changes to the control fields in real time. Each band isuniquely
identified by an integer. This allows a wide range of texturing effects,
including specifying adifferent appearance in each individual bands. Our
technique also affords for progressive gradationsof scales, avoiding the abrupt
doubling of the number of lines of typical subdivision approaches. Thisleads to
a general approach for drawing bands, drawing splitting and merging curves, and
drawingevenly spaced streamlines. Using these base ingredients, we demonstrate
a wide variety of texturingeffects.
