line zig zag

Zigzag lines emphasise the diagonal "action" lines

This is because the diagonal lines are in competition with each other - creating a visual tension.

Often shadows will create lines at different times of the day, creating a different atmosphere, as seen with the screen shadow.

The zig zag line is depicted as purple - reds excitement with blues calm. 

diagonal lines seem to balance each other as a repetitive nature of the zig zag creates a calming spiritual feeling, as you would in a meditative state.