ccolin/mod_geo-tp
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

idk some changes, shit's still fucked

Browse Source
This commit is contained in:
papush!
2021-11-09 22:18:01 +01:00
parent 0c0cc8a907
commit 37fbe47aa8
3 changed files with 72 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/util.h
View File

@ -47,27 +47,22 @@ QDebug operator<<(QDebug dbg, const Point &p);
/* Returns the angle between the vector from p2 to p1 and the vector
* from p2 to p3. */
template <typename Point>
qreal angle_between(Point p1,
Point p2,
Point p3) {
qreal angle_between(Point p1, Point p2, Point p3) {
Point vec_a = p1 - p2;
Point vec_b = p3 - p2;
QVector3D a(vec_a[0], vec_a[1], vec_a[2]);
QVector3D b(vec_b[0], vec_b[1], vec_b[2]);
return qAcos(QVector3D::dotProduct(a.normalized(), b.normalized()));
return qAcos(vec_a.dot(vec_b) / (vec_a.norm() * vec_b.norm()));
}
template <typename Point>
qreal triangle_area(Point p1,
Point p2,
Point p3) {
qreal triangle_area(Point p1, Point p2, Point p3) {
Point vec_a = p1 - p2;
Point vec_b = p3 - p2;
QVector3D a(vec_a[0], vec_a[1], vec_a[2]);
QVector3D b(vec_b[0], vec_b[1], vec_b[2]);
return QVector3D::crossProduct(a, b).length() / 2.;
return vec_a.cross(vec_b).norm() / 2.;
}
qreal cotan(const qreal x);
#endif