public AyParticle(AyVector2 _position, AyVector2 _velocity, double _life, Color _color, double _size)
{
this.Position = _position;
this.Velocity = _velocity;
this.Life = _life;
this.Color = _color;
this.Size = _size;
}
/// <summary>
/// 向量相加
/// </summary>
/// <param name="v"></param>
/// <returns></returns>
public AyVector2 Add(AyVector2 v)
{
return(new AyVector2(this.X + v.X, this.Y + v.Y));
}
/// <summary>
/// 向量相减
/// </summary>
/// <param name="v"></param>
/// <returns></returns>
public AyVector2 Subtract(AyVector2 v)
{
return(new AyVector2(this.X - v.X, this.Y - v.Y));
}
/// <summary>
/// 向量 点积运算
/// 作者AY
/// </summary>
/// <returns></returns>
public double Dot(AyVector2 v)
{
return(this.X * v.X + this.Y * v.Y);
}