public override void DrawCircle(b2Vec2 center, float radius, b2Color color)
 {
     var centr = center.ToCCPoint() * PTMRatio;
     var rad = radius * PTMRatio;
     DrawNode.DrawCircle(centr, rad, color.ToCCColor4B());
 }
 public override void DrawSolidCircle(b2Vec2 center, float radius, b2Vec2 axis, b2Color color)
 {
     var colorFill = color.ToCCColor4B() * 0.5f;
     var centr = center.ToCCPoint() * PTMRatio;
     var rad = radius * PTMRatio;
     DrawNode.DrawSolidCircle(centr, rad, colorFill);
     DrawNode.DrawLine(centr, centr + (axis.ToCCPoint() * PTMRatio) * radius,3, color.ToCCColor4B());
 }