Rendering Techniques, Continued
Folds formed by tension are at the shoulder-arm junction, the elbow, the
waist, the leg-torso junction, and the knee.
Although trousers are supported
at the waist, they display a significant amount of tension folds at the waist,
the crotch, and the knee. Notice that some of the folds terminate at the seam
of the pantleg which act like a point of support.
Figure 3-58 shows folds in pairs of trousers.
Figure 3-58.Four perspectives showing folds
When the arm, the torso, or the leg bends or changes direction, the cloth
slackens on the opposite side of the tension. Folds become strongly
directional. Buttons may interrupt folds and create folds of their own. As
tension or action increases, folds become tighter.