diff options
| -rw-r--r-- | spheres_infinite.cpp | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/spheres_infinite.cpp b/spheres_infinite.cpp index 7879f34..f7e11ad 100644 --- a/spheres_infinite.cpp +++ b/spheres_infinite.cpp @@ -74,11 +74,9 @@ public: glColor3d(1.0, 0.0, 0.0); glLineWidth(3); glBegin(GL_LINES); - Euclidean<double, D> a_tmp = t->r; - a_tmp.t /= 2; Euclidean<double, D> r_tmp = t->r; Vector<double, 2> r_center = r_tmp.t / 2; - double θ = acos(r_tmp.r(1, 1)) / 2; + double θ = atan2(r_center(1), r_center(0)); Vector<double, 2> v1 = s0_tmp.act({r_center(0) + 50*L * sin(θ), r_center(1) - 50*L * cos(θ)}); Vector<double, 2> v2 = s0_tmp.act({r_center(0) - 50*L * sin(θ), r_center(1) + 50*L * cos(θ)}); glVertex2d(v1(0), v1(1)); |