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common: qvec: add qplane. fix dot().

This commit is contained in:
Eric Wasylishen 2017-04-23 01:40:23 -06:00
parent 56513cdb8e
commit ed09b4af8d
1 changed files with 20 additions and 1 deletions
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21
include/common/qvec.hh
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@ -154,7 +154,7 @@ qvec<3,T> cross(const qvec<3,T> &v1, const qvec<3,T> &v2) {
}
template <int N, class T>
qvec<N,T> dot(const qvec<N,T> &v1, const qvec<N,T> &v2) {
T dot(const qvec<N,T> &v1, const qvec<N,T> &v2) {
T result = 0;
for (int i=0; i<N; i++) {
result += v1[i] * v2[i];
@ -170,6 +170,25 @@ using qvec2d = qvec<2, double>;
using qvec3d = qvec<3, double>;
using qvec4d = qvec<4, double>;
template <class T>
class qplane3 {
private:
qvec<3, T> m_normal;
T m_dist;
public:
qplane3(const qvec<3, T> &normal, const T &dist)
: m_normal(normal),
m_dist(dist) {}
T distAbove(const qvec<3, T> &pt) const { return dot(pt, m_normal) - m_dist; }
const qvec<3, T> &normal() const { return m_normal; }
const T dist() const { return m_dist; }
};
using qplane3f = qplane3<float>;
using qplane3d = qplane3<double>;
/**
* M row, N column matrix
*/