Hosoda's projections are the NT, N, V, and E waves, which are derived from calculations based on both upward and downward ABC swings.
Hosoda's waves are derived from the following calculations:
NT Wave = C + (C - A)
N Wave = B + (B - A)
V Wave = B + (B - C)
E Wave = C + (B - A)
There are already scripts for the Hosoda waves, and my idea is to project an ABCDE swing simultaneously, meaning projecting three swings:
ABC, indicated with an A, resulting in NT-A, N-A, V-A, E-A.
BCD, indicated with a B, resulting in NT-B, N-B, V-B, E-B.
CDE, indicated with a C, resulting in NT-C, N-C, V-C, E-C.
Once the indicator is applied to the chart, the interactive Pine Script tool version 5 will prompt you to identify 5 points of "low-high-low-high-low" or "high-low-high-low-high," both for upward and downward movements and mixed.
Once clicked, these price points can be moved. If you change the time frame or market instrument, the indicator must be removed because it remains tied to the prices where it was initially drawn.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.