u02/tests: Add link to desmos for circle

2023-05-07 14:02:45 +02:00 · 2023-05-07 14:02:45 +02:00 · 11da9a4d79
parent e942c62ad6
commit 11da9a4d79
1 changed files with 3 additions and 0 deletions
--- a/u02/src/tests.cpp
+++ b/u02/src/tests.cpp
@ -330,6 +330,9 @@ TEST_CASE("Bresenham circle (prop: √(x²+y²)-r<ε)") {
  //
  // When the points are rounded to the nearest integer,
  // M must be rounded down and m rounded down.
+  //
+  // An interactive version of this can be found here:
+  // https://www.desmos.com/calculator/kn19qhue20
  const int size = 100;                                         // s
  const int max_c = std::floor(size / (3 - std::sqrt(2)));      // M (2)
  const int min_c = std::ceil(((4 - std::sqrt(2)) / 7) * size); // m (3)