/// <summary>
/// 清除鼠标MechanicalObject、StiffSpringForceField组件及其字典中储存的信息，将临时变量归零
/// </summary>
private unsafe void MouseDragRemove()
{
//移除StiffSpringForceFiled组件
SofaPhysicsAPI.RemoveStiffSpringForceField(SofaPhysics.ToChar("root"), SofaPhysics.ToChar(stiffSpringForceFieldName));
//移除MechanicalObject组件及字典中储存的信息
SofaPhysicsAPI.RemoveMechanicalObject(SofaPhysics.ToChar("root"), SofaPhysics.ToChar(mechanicalObjectName));
SofaPhysics.unityMechanicalObjectInfoDic.Remove(mechanicalObjectName);
SofaPhysics.sofaMechanicalObjectInfoDic.Remove(mechanicalObjectName);
}
