contains, intersects (+ ellipse)

ellipse object for e.g. cylinder-plane intersection (disputable implementation)

contains for cylinder and cone

intersects(ray3, ray3)

intersects(ray3, inf_cone3)

intersects also for inf_cone, cylinder and plane combinations

intersects(plane3, triangle3)

src/typed-geometry/functions/objects/any_point.hh

+#pragma once
+
+#include <typed-geometry/types/objects/plane.hh>
+
+namespace tg
+{
+// Any point on a plane
+template <class ScalarT>
+[[nodiscard]] constexpr pos<3, ScalarT> any_point(plane<3, ScalarT> const& p)
+{
+    auto point = pos<3, ScalarT>::zero;
+    if (p.normal.x != 0)
+        point.x = p.dis / p.normal.x;
+    else if (p.normal.y != 0)
+        point.y = p.dis / p.normal.y;
+    else
+        point.z = p.dis / p.normal.z;
+
+    return point;
+}
+} // namespace tg