react-native-stock-graphs/lib/commonjs/utils/chart.d.ts

High-performance, interactive stock charts for React Native with TypeScript support

import { CandleData, LineData, DateRange, ChartDimensions } from '../types';
/**
 * Convert timestamp to x-coordinate
 */
export declare function timeToX(timestamp: number, timeRange: {
    min: number;
    max: number;
}, dimensions: ChartDimensions): number;
export declare function timeToX(timestamp: number, timeRange: {
    min: number;
    max: number;
}, chartWidth: number, padding?: {
    left: number;
    right: number;
}): number;
/**
 * Convert price to y-coordinate
 */
export declare function priceToY(price: number, priceRange: {
    min: number;
    max: number;
}, dimensions: ChartDimensions): number;
export declare function priceToY(price: number, priceRange: {
    min: number;
    max: number;
}, chartHeight: number, padding?: {
    top: number;
    bottom: number;
}): number;
/**
 * Convert x-coordinate to timestamp
 */
export declare function xToTime(x: number, timeRange: {
    min: number;
    max: number;
}, dimensions: ChartDimensions): number;
export declare function xToTime(x: number, timeRange: {
    min: number;
    max: number;
}, chartWidth: number, padding?: {
    left: number;
    right: number;
}): number;
/**
 * Convert y-coordinate to price
 */
export declare function yToPrice(y: number, priceRange: {
    min: number;
    max: number;
}, dimensions: ChartDimensions): number;
export declare function yToPrice(y: number, priceRange: {
    min: number;
    max: number;
}, chartHeight: number, padding?: {
    top: number;
    bottom: number;
}): number;
/**
 * Get time range from data
 */
export declare const getTimeRange: (data: CandleData[] | LineData[]) => {
    min: number;
    max: number;
};
/**
 * Get price range from candle data or line data
 */
export declare function getPriceRange(data: CandleData[]): {
    min: number;
    max: number;
};
export declare function getPriceRange(data: LineData[]): {
    min: number;
    max: number;
};
/**
 * Get value range from line data
 */
export declare const getValueRange: (data: LineData[]) => {
    min: number;
    max: number;
};
/**
 * Filter data by date range
 */
export declare const filterDataByRange: <T extends CandleData | LineData>(data: T[], range: DateRange | {
    min: number;
    max: number;
}) => T[];
/**
 * Decimate data for performance (keep every nth point)
 */
export declare const decimateData: <T extends CandleData | LineData>(data: T[], maxPoints: number) => T[];
/**
 * Find nearest data point to coordinates
 */
export declare function findNearestDataPoint<T extends CandleData | LineData>(data: T[], targetTime: number): {
    point: T;
    index: number;
    time: number;
} | null;
export declare function findNearestDataPoint<T extends CandleData | LineData>(data: T[], x: number, timeRange: {
    min: number;
    max: number;
}, chartWidth: number, padding?: {
    left: number;
    right: number;
}): {
    point: T;
    index: number;
} | null;
/**
 * Generate nice tick values for axis
 */
export declare const generateTicks: (min: number, max: number, maxTicks?: number) => number[];
/**
 * Format price for display
 */
export declare const formatPrice: (price: number, decimals?: number) => string;
/**
 * Format timestamp for display
 */
export declare const formatTime: (timestamp: number, format?: "time" | "date" | "datetime") => string;
/**
 * Calculate visible data range based on zoom and pan
 */
export declare const calculateVisibleRange: (data: CandleData[] | LineData[], zoom: number, panX: number, chartWidth: number) => {
    startIndex: number;
    endIndex: number;
    visibleData: (CandleData | LineData)[];
};
/**
 * Clamp value between min and max
 */
export declare const clamp: (value: number, min: number, max: number) => number;
/**
 * Linear interpolation
 */
export declare const lerp: (start: number, end: number, factor: number) => number;
/**
 * Calculate distance between two points
 */
export declare function distance(point1: {
    x: number;
    y: number;
}, point2: {
    x: number;
    y: number;
}): number;
export declare function distance(x1: number, y1: number, x2: number, y2: number): number;
/**
 * Throttle function calls
 */
export declare const throttle: <T extends (...args: any[]) => any>(func: T, delay: number) => T;
/**
 * Debounce function calls
 */
export declare const debounce: <T extends (...args: any[]) => any>(func: T, delay: number) => T;
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