public PCircleShape(float px, float py, float radius, float angle, float density) { _dens = density; _type = PShapeType.CIRCLE_SHAPE; _localPos.Set(px, py); rad = radius; _localAng = angle; mm = rad * rad * 3.141593F * _dens; ii = (mm * rad * rad * 2.0F) / 5F; this.mcircle = new Loon.Core.Geom.Circle(px, py, radius); }