Exemple #1
0
void _XWindLine::addAPoint(const _XVector2 & p)	//插入一个点
{
	if(!m_isInited) return;
	if(m_points.size() == 0)
	{//第一个点,不需要插值
		_XSmoothPoint *ip = createMem<_XSmoothPoint>();
		if(ip == NULL) return;
		ip->m_length = 0.0f;
		ip->m_percentage = 0.0f;
		ip->m_position = p;
		m_points.push_back(ip);
		m_pointsLife.push_back(m_maxLife);
	}else
	{
		//方案1:线性插值
		_XSmoothPoint * last = m_points[m_points.size() - 1];	//获取最后一个点
		float lastLife = m_pointsLife[m_points.size() - 1];
		float len = p.getLength(last->m_position);
		if(len <= 0.0f)	return;	//与最后一个点重合不需要加入新的点
		int sum = len / m_insertLength;
		sum = XEE_Min(m_insertSum,sum);
		//尚未完成
		float d = 1.0f / (sum + 1.0f);
		float per = d;
		for(int i = 1;i < sum + 1; ++ i)
		{//下面插入点
			pushAPoint(lineSlerp<_XVector2>(last->m_position,p,per),
				lineSlerp<float>(lastLife,m_maxLife,per));
			per += d;
		}
		//方案2:贝塞尔插值 (尚未实现)
		//更新内部数据
		updateData();
	}
}
Exemple #2
0
void XWindLine::addAPoint(const XVec2& p)	//插入一个点
{
	if(!m_isInited) return;
	if(m_points.size() == 0)
	{//第一个点,不需要插值
		XSmoothPoint *ip = XMem::createMem<XSmoothPoint>();
		if(ip == NULL) return;
		ip->m_length = 0.0f;
		ip->m_percentage = 0.0f;
		ip->m_position = p;
		m_points.push_back(ip);
		m_pointsLife.push_back(m_maxLife);
	}else
	{
		//方案1:线性插值
		XSmoothPoint * last = *(m_points.end() - 1);	//获取最后一个点
		assert(m_points.size() == m_pointsLife.size());
		//float lastLife = m_pointsLife[(int)(m_points.size()) - 1];
		float lastLife = *(m_pointsLife.end() - 1);
		float len = p.getLength(last->m_position);
		if(len <= 0.0f)	return;	//与最后一个点重合不需要加入新的点
		int sum = len / m_insertLength;
		sum = (std::min)(m_insertSum,sum);
		//尚未完成
		float d = 1.0f / (sum + 1.0f);
		float per = d;
		for(int i = 1;i < sum + 1; ++ i)
		{//下面插入点
			pushAPoint(XMath::lineSlerp<XVec2>(last->m_position,p,per),
				XMath::lineSlerp<float>(lastLife,m_maxLife,per));
			per += d;
		}
		//方案2:贝塞尔插值 (尚未实现)
		//更新内部数据
		updateData();
	}
}