getJointTranslation method
Implementation
double getJointTranslation() {
final b1 = bodyA;
final b2 = bodyB;
final p1 = Vector2.zero();
final p2 = Vector2.zero();
final axis = Vector2.zero();
p1.setFrom(b1.worldPoint(localAnchorA));
p2.setFrom(b2.worldPoint(localAnchorA));
p2.sub(p1);
axis.setFrom(b1.worldVector(_localXAxisA));
final translation = p2.dot(axis);
return translation;
}