Curved Radius Supertrend [BOSWaves]

本页源码来自 TradingView 公开发布的开源脚本，版权归原作者所有， 请遵循其原始许可（Pine 脚本常见 CC BY-NC-SA / MPL-2.0 / MIT）。 本项目仅用于研究检索与许可范围内的移植。

Pine Script

// This Pine Script® code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © BOSWaves
 
//@version=6
indicator("Curved Radius Supertrend [BOSWaves]", overlay=true)
 
// ============================================================================
// Inputs
// ============================================================================
 
// Supertrend Settings
atrLength = input.int(14, "ATR Length", minval=1, group="Supertrend Settings",
     tooltip="Number of bars for ATR calculation. Higher = smoother, Lower = more responsive.")
 
atrMult = input.float(2.0, "ATR Multiplier", minval=0.1, group="Supertrend Settings",
     tooltip="Distance of bands from price. Higher = wider bands, fewer signals.")
 
// Curve Settings
radiusStrength = input.float(0.2, "Radius Strength", 
     minval=0.01, maxval=0.3, step=0.01, group="Curve Settings",
     tooltip="Controls curve acceleration strength.\n\n" +
              "Recommended values by timeframe:\n" +
              "• 1-5min (Scalping): 0.08-0.12\n" +
              "• 15min: 0.12-0.15\n" +
              "• 1H: 0.15-0.18\n" +
              "• 4H: 0.18-0.22\n" +
              "• Daily: 0.20-0.25\n" +
              "• Weekly: 0.25-0.30\n\n" +
              "Lower = Tighter curves (responsive)\n" +
              "Higher = Wider curves (smoother)")
 
smoothness = input.int(5, "Smoothness", minval=1, maxval=20, group="Curve Settings",
     tooltip="Smoothing applied to curved band. Higher = smoother curves, less noise.")
 
// Color Settings
upColor = input.color(color.green, "Up Trend", group="Color Settings",
     tooltip="Color for uptrend band and signals.")
 
dnColor = input.color(color.red, "Down Trend", group="Color Settings",
     tooltip="Color for downtrend band and signals.")
 
// ============================================================================
// Supertrend Calculation
// ============================================================================
atr = ta.atr(atrLength)
src = hl2
 
upperBand = src + (atrMult * atr)
lowerBand = src - (atrMult * atr)
 
var float supertrend = na
var int direction = 1
 
// Initialize
if na(supertrend)
    supertrend := lowerBand
    direction := 1
 
// Standard supertrend logic
float prevSupertrend = supertrend
 
if direction == 1
    supertrend := close < prevSupertrend ? upperBand : math.max(lowerBand, prevSupertrend)
else
    supertrend := close > prevSupertrend ? lowerBand : math.min(upperBand, prevSupertrend)
 
int prevDirection = direction
if close < supertrend
    direction := -1
if close > supertrend
    direction := 1
 
// ============================================================================
// Curved Radius Implementation
// ============================================================================
var float anchorPrice = na
var int anchorBar = na
var float velocity = 0.0
var int barCount = 0
 
// Detect trend change - set new anchor
bool trendChanged = direction != prevDirection
 
if trendChanged
    anchorPrice := supertrend
    anchorBar := bar_index
    velocity := 0.0
    barCount := 0
 
// Increment bar counter
barCount := barCount + 1
 
// Calculate curved offset using acceleration creating a parabolic curve
if not na(anchorPrice)
    // Acceleration increases with each bar (quadratic growth)
    velocity := velocity + (radiusStrength * barCount)
    
    // Apply velocity in direction of trend
    if direction == 1
        // Uptrend - curve upward with acceleration
        supertrend := anchorPrice + velocity
    else
        // Downtrend - curve downward with acceleration  
        supertrend := anchorPrice - velocity
 
// Apply smoothing to create flowing curves
curvedBand = ta.sma(supertrend, smoothness)
 
// ============================================================================
// Visualization
// ============================================================================
trendColor = direction == 1 ? upColor : dnColor
 
// Plot the curved band
plot(curvedBand, "Curved Radius Band", 
     color=trendColor, 
     linewidth=3)
 
// Fill between price and band
basePlot = plot(close, display=display.none)
bandPlot = plot(curvedBand, display=display.none)
fill(basePlot, bandPlot, color.new(trendColor, 85))
 
// Plot smoother outer envelope
outerBand = direction == 1 ? curvedBand + atr : curvedBand - atr
plot(outerBand, "Outer Band", 
     color=color.new(trendColor, 70), 
     linewidth=1,
     style=plot.style_circles)
 
// Plot candle coloring based on trend
barcolor(direction == 1 ? upColor : dnColor, title="Trend Candle Color")
 
// ============================================================================
// Signals
// ============================================================================
buySignal = trendChanged and direction == 1
sellSignal = trendChanged and direction == -1
 
plotshape(buySignal, "Buy", shape.labelup, location.belowbar, 
          upColor, text="BUY", textcolor=color.white, size=size.small)
plotshape(sellSignal, "Sell", shape.labeldown, location.abovebar, 
          dnColor, text="SELL", textcolor=color.white, size=size.small)
 
// ============================================================================
// Alerts
// ============================================================================
alertcondition(buySignal, "Curved Buy", "Curved Radius Supertrend - Buy Signal")
alertcondition(sellSignal, "Curved Sell", "Curved Radius Supertrend - Sell Signal")

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