Zoom adjustDist(): Improve variable name (#7208)

diff --git a/src/util/numeric.cpp b/src/util/numeric.cpp
index ddd4fd6cce527a8d18fb6e017ed4fc5f4f165bb7..7264e5f89909a35e8bb8d657830ee3c79c9a7bfa 100644 (file)
--- a/src/util/numeric.cpp
+++ b/src/util/numeric.cpp
@@ -165,14 +165,12 @@ bool isBlockInSight(v3s16 blockpos_b, v3f camera_pos, v3f camera_dir,
 
 s16 adjustDist(s16 dist, float zoom_fov)
 {
-       // 1.775 ~= 72 * PI / 180 * 1.4, the default on the client
-       static constexpr const float default_fov = 1.775f / 2.0f;
-       // heuristic cut-off for zooming
-       if (zoom_fov > default_fov)
+       // 1.775 ~= 72 * PI / 180 * 1.4, the default FOV on the client.
+       // The heuristic threshold for zooming is half of that.
+       static constexpr const float threshold_fov = 1.775f / 2.0f;
+       if (zoom_fov > threshold_fov)
                return dist;
 
-       // new_dist = dist * ((1 - cos(FOV / 2)) / (1-cos(zoomFOV /2))) ^ (1/3)
-       // note: FOV is calculated at compilation time
-       return std::round(dist * std::cbrt((1.0f - std::cos(default_fov)) /
+       return std::round(dist * std::cbrt((1.0f - std::cos(threshold_fov)) /
                (1.0f - std::cos(zoom_fov / 2.0f))));
 }