t=start_time

R=50

D=0.95

p1=this_comp.layer("rouge").position.value_at_time(t)

p2=this_comp.layer("jaune").position.value_at_time(t)

p1a=this_comp.layer("rouge").position.value_at_time(t-this_comp.frame_duration)

p2a=p2=this_comp.layer("jaune").position.value_at_time(t-this_comp.frame_duration)

v1=p1-p1a

v2=p2-p2a

while(time>t){

t=t+this_comp.frame_duration

delta=p2-p1

ndelta=normalize(delta)

a=ndelta*(length(delta)-R)*this_comp.frame_duration

v2=(v2-a)*D

v1=(v1+a)*D

p1=p1+v1

p2=p2+v2

}

p1