// The MIT License (MIT)
// © mihakralj
//@version=6
indicator("Midpoint (MIDPOINT)", "MIDPOINT", overlay=true)

//@function Calculates the midpoint of the highest high and lowest low over a specified period
//@doc https://github.com/mihakralj/pinescript/blob/main/indicators/numerics/midpoint.md
//@param src Source series to calculate midpoint for
//@param len Lookback period for finding highest and lowest values
//@returns float The midpoint value (highest + lowest) * 0.5 over the period
//@optimized Uses multiplication instead of division for performance
midpoint(series float src, simple int len) =>
    if len <= 0
        runtime.error("Length must be greater than 0")
    float highest_val = ta.highest(src, len)
    float lowest_val = ta.lowest(src, len)
    (highest_val + lowest_val) * 0.5

// ---------- Main loop ----------

// Inputs
i_source = input.source(close, "Source")
i_length = input.int(14, "Length", minval=1)

// Calculation
result = midpoint(i_source, i_length)

// Plot
plot(result, "Midpoint", color=color.yellow, linewidth=2)