LinearDensityLineField returns a set of parallel lines, all oriented in the direction of angle relative to 0x axis, only returns the lines that would fall inside the box densityFn takes input in the range [0;1] and outputs positive values denoting the spacing to respect at every increment.

LinearLineField returns a set of parallel lines, all oriented in the direction of angle relative to 0x axis, only returns the lines that would fall inside the box.