Table 1: Classification of wearing trajectories.

ConditionsTrajectory Formulations

If Straight line motion (see Lemma 1)

If
 If
  If , , and (see Lemma 2 and Figure 10(a))
  If ) , , and (see Lemma 3 and Figure 10(b))
 If
  If , , and (see Lemma 4 and Figure 11(a))
  If , , , , and (see Lemma 5 and Figure 11(b))
 If
  If , , and (see Figure 12(a))
  If , , and (see Figure 12(b))
 If
  If , , and (see Figure 13(a))
  If ) , , , , and (see Figure 13(b))
 If Path from to , with and (see Figure 14(a))
 If Path from to , with and (see Figure 14(b))

If
 If Path from to , with and (see Figure 15(a))
 If Path from to , with and (see Figure 15(b))
 If Path from to , with (see Figure 16(a))
 If Path from to , with (see Figure 16(b))