Class LiveFFTRenderer

java.lang.Object

com.arbergashi.charts.render.BaseRenderer

com.arbergashi.charts.render.analysis.LiveFFTRenderer

All Implemented Interfaces:

ChartRenderer

public class LiveFFTRenderer
extends BaseRenderer

Live FFT renderer (JDK 25 standard). Transforms a time signal into the frequency domain and visualizes it. Ideal for acoustics, vibration analysis, and signal processing.

Since:

2026-01-01

Version:

1.0.0

Author:

Arber Gashi

Field Summary

Fields inherited from class BaseRenderer

PIXEL_BUF, PIXEL_BUF4

Constructor Summary

Constructors

Constructor	Description
LiveFFTRenderer()

Method Summary

Modifier and Type	Method	Description
static double[]	computeFFT(double[] timeSignal)	Helper for a simple FFT (Cooley-Tukey).
protected void	drawData(Graphics2D g2, ChartModel model, PlotContext context)	Implementation-specific drawing logic.
void	setAsBars(boolean asBars)

Methods inherited from class BaseRenderer

drawHighlightPoint, drawI18nLabel, drawLabel, getArc, getCachedFont, getCachedGradient, getCachedStroke, getCachedStroke, getCachedStroke, getCubicCurve, getEllipse, getId, getLayerIndex, getLegendColor, getLine, getName, getPathCache, getPointAt, getRect, getRoundRectangle, getSeriesColor, getSeriesStroke, getTheme, getTooltipText, isLegendRequired, isMultiColor, pBuffer, pBuffer4, render, resolveTheme, seriesOrBase, setLayerIndex, setMultiColor, setTheme, setupQualityHints, themeAccent, themeAxisLabel, themeBackground, themeBearish, themeBullish, themeForeground, themeGrid, themeSeries

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface ChartRenderer

clearHover, createContext, getFocusValues, getPreferredYRange, renderEmptyState, supportsEmptyState

Constructor Details

LiveFFTRenderer

public LiveFFTRenderer()

Method Details

computeFFT

public static double[] computeFFT(double[] timeSignal)

Helper for a simple FFT (Cooley-Tukey). Provided as a placeholder for internal logic.

setAsBars

public void setAsBars(boolean asBars)

drawData

protected void drawData(Graphics2D g2,
 ChartModel model,
 PlotContext context)

Description copied from class: BaseRenderer

Implementation-specific drawing logic. Must follow Zero-Allocation rules.

Specified by:

drawData in class BaseRenderer