Class KDERenderer

java.lang.Object

com.arbergashi.charts.render.BaseRenderer

com.arbergashi.charts.render.statistical.KDERenderer

All Implemented Interfaces:

ChartRenderer

public final class KDERenderer
extends BaseRenderer

Professional, zero-allocation Kernel Density Estimate (KDE) renderer.

Since:

2025-06-01

Version:

1.0.0

Author:

Arber Gashi

Field Summary

Fields inherited from class BaseRenderer

PIXEL_BUF, PIXEL_BUF4

Constructor Summary

Constructors

Constructor	Description
KDERenderer()

Method Summary

Modifier and Type	Method	Description
protected void	drawData(Graphics2D g, ChartModel model, PlotContext context)	Implementation-specific drawing logic.
double[]	getPreferredYRange(ChartModel model)	Optional Y-range override for autoscaling.
void	setBandwidth(double bandwidth)

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, renderEmptyState, supportsEmptyState

Constructor Details

KDERenderer

public KDERenderer()

Method Details

getPreferredYRange

public double[] getPreferredYRange(ChartModel model)

Description copied from interface: ChartRenderer

Optional Y-range override for autoscaling.

Renderers may return a {minY, maxY} array when the visible range should be based on derived data rather than the model's raw Y-values (e.g. indicators like MACD).

Parameters:

model - the layer model

Returns:

{minY, maxY} or null to use model Y-values

drawData

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

Description copied from class: BaseRenderer

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

Specified by:

drawData in class BaseRenderer

setBandwidth

public void setBandwidth(double bandwidth)