Function angle

tools/MeshUtils/ObtuseTriangleRemoval.cpp:13–18

namespace ObtuseTriangleRemovalHelper {
    Float angle(const Vector3F& v1, const Vector3F& v2) {
        Float sin_val = v1.cross(v2).norm();
        Float cos_val = v1.dot(v2);
        Float result = atan2(sin_val, cos_val);
        return fabs(result);
    }
}

using namespace ObtuseTriangleRemovalHelper;