Visibility Calculator

VIS is a CLI-tool for calculating hitobject visibility for osu! beatmaps.

Download the Windows executeable here. Feel free to compile the program for other operating systems yourself.

Documentation

The program calculates visibility using the following formulas (which can be found on osu!wiki):

                                        X = perfect hit
              p r e e m p t             ↓
 ├───────────────────────┬──────────────┤
 0%      fade_in           100% opacity

The circle starts fading in at X - preempt with:

• AR < 5: preempt = 1200ms + 600ms * (5 - AR) / 5
• AR = 5: preempt = 1200ms
• AR > 5: preempt = 1200ms - 750ms * (AR - 5) / 5

The amount of time it takes for hitobjects to fade in is also reliant on approachrate:

• AR < 5: fade_in = 800ms + 400ms * (5 - AR) / 5
• AR = 5: fade_in = 800ms
• AR > 5: fade_in = 800ms - 500ms * (AR - 5) / 5

Parameters

All three parameters need to be entered correctly to calculate visibility.

Arguments	Input types
Approach Rate	Double
Beats per Minute	Double
Snap Divisor	Integer

Output

VIS will output something like this after execution: