bool plane::isInPlane(const line& l)const
{
auto dot = norm_.dotProduct(l.dir());
if (!floatEqual(dot, 0.0f))
return false;
return isInPlane(l.start());
}
std::pair<bool, vector3> plane::intersection(const line& l)const
{
auto ret = std::make_pair<bool, vector3>(false, vector3());
if (isInPlane(l))
return ret;
ret.first = true;
auto t = (norm_.dotProduct(point_) - norm_.dotProduct(l.start())) / (norm_.dotProduct(l.dir()));
ret.second = l.start() + t * l.dir();
return ret;
}