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();
}
}
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();
}
}
