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-rw-r--r--src/util/numeric.cpp12
1 files changed, 5 insertions, 7 deletions
diff --git a/src/util/numeric.cpp b/src/util/numeric.cpp
index ddd4fd6cc..7264e5f89 100644
--- 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))));
}