Shading effect to angled lines to dots, how is this done?

[mrbert]

I am trying to replicate this effect. Its almost lines for a fill and as the fill becomes a shadw the filled lines come dots. Is this a brush controlled at an angle and then dots added afterwards, as the shading gets lighter any ideas?

[c.pfaffenbichler]

The lines might be be achieved with reaction dissusion, some »breaking« of the lines with a Pattern set to Hard Mix. 

[mrbert]

thanks, i'll give this a go.