/// <summary>
/// ��ʼ��
/// </summary>
protected override void Initialize()
{
/* �������100fps */
IsFixedTimeStep = true;
/* 1������Ⱦ100fps */
TargetElapsedTime = new TimeSpan(0, 0, 0, 0, 1);
/* ��ʼ����������ȫ�֣�����Ϊ9.8�������� */
physicsSimulator = new PhysicsSimulator(new Vector2(0f, 1000f));
/* ����Ħ��Ϊƽ��ֵ */
//physicsSimulator.FrictionType = FrictionType.Minimum;
/* ��ʼ�������ε�ռλ��������С����������λ�� */
//boxBody1 = BodyFactory.Instance.CreateRectangleBody(physicsSimulator, 50, 50, 79 * 50 * 50);
//boxBody1.Position = new Vector2(400, 100);
/* ���ü��ٱ��� */
//boxBody1.LinearDragCoefficient = 1.5f;
/* �������ι̶��ڳ�ʼ���� */
//boxBody1.IsStatic = true;
/* ��ʼ����������ײ��� */
//boxGeometry1 = GeomFactory.Instance.CreateRectangleGeom(physicsSimulator, boxBody1, 50, 50);
/* ��ʼ��Բ�ε�ռλ��������С����������λ�� */
boxBody2 = BodyFactory.Instance.CreateCircleBody(physicsSimulator, 25, 1);
boxBody2.Position = new Vector2(400, 400);
/* ���ٱ��� */
boxBody2.LinearDragCoefficient = 0.9f;
/* ���м��ٱ��� */
boxBody2.LinearVelocity = new Vector2(10f);
/* ��ת�ٱ��� */
boxBody2.RotationalDragCoefficient = 25f;
/* ��ʼ����������ײ��� */
boxGeometry2 = GeomFactory.Instance.CreateCircleGeom(physicsSimulator, boxBody2, 25, 60);
/* ��ʼ����ص�ռλ��������С����������λ�� */
boxBody3 = BodyFactory.Instance.CreateRectangleBody(physicsSimulator, 1440, 10, 79f * (4 / 3 * 3.1416f * 25 * 25 * 25));
boxBody3.Position = new Vector2(500, 580);
boxBody3.LinearDragCoefficient = 0.9f;
/* ����ع̶��ڳ�ʼ���� */
boxBody3.IsStatic = true;
/* ��ʼ�������ײ��� */
boxGeometry3 = GeomFactory.Instance.CreateRectangleGeom(physicsSimulator, boxBody3, 1440, 10);
/* �������κ�Բ�����������������Ϊ300����С����Ϊ50 */
//sliderJoint = JointFactory.Instance.CreateSliderJoint(physicsSimulator,
// boxBody1, new Vector2(25, 25), boxBody2, new Vector2(25, 25), 50, 300);
gex = new GraphicsEx(this);
gex.LoadContent();
/* ���ɼ� */
IsMouseVisible = true;
base.Initialize();
}