Gesture Drawing For Animation
Without the "T"s, all those lines would run together, and depth would be destroyed:
Along these lines (slight pun intended) we might introduce the "L" rule. In cases where
one thing meets another but is neither in front of nor behind it (changes direction but does
not overlap), but where differentiation is needed or desirable—use the "L" rule:
Atangent occurs when two or more lines meet or merge into one another so there is no
differentiation between the parts which they describe. A simple example is two mountain
shapes drawn with no overlap, which automatically creates a tangent and destroys any
illusion of depth whatever:
The simple solution to this problem is to add overlap:
Making it very clear which hill is in front of the other. Then if you force the perspective
by adding surface plus size to the drawing it will be more definite and read much faster.
Tangents also occur when one line ends at some point then seems to continue on at
another point: