public DebuggableConstraint(Geometry.Manifold m, TwoWayPenFricConstraint.Partial p, TwoWayPenFricConstraint c, bool useContact1, float dt)
 {
     this.m           = m;
     this.useContact1 = useContact1;
     constraint       = c;
     this.dt          = dt;
     this.p           = p;
 }
 public void EmitDebuggableConstraint(Geometry.Manifold m, TwoWayPenFricConstraint.Partial p, TwoWayPenFricConstraint c, bool useContact1, float dt)
 {
     if (debuggableConstraints != null)
     {
         debuggableConstraints.Add(new DebuggableConstraint(m, p, c, useContact1, dt: dt));
     }
 }