frame.akima/dist/CatmullRom.d.ts

A package for Akima interpolation

export declare function getCenter(points: {
    x: number;
    y: number;
}[]): {
    x: number;
    y: number;
};
export declare function sortPointsCounterClockwise(points: {
    x: number;
    y: number;
}[]): {
    x: number;
    y: number;
}[];
export declare function createCatmullRomSpline(points: {
    x: number;
    y: number;
}[]): (angle: number) => {
    x: number;
    y: number;
    radius: number;
};
/**
 * Baut aus einer Punktwolke einen geschlossenen Catmull-Rom-Spline in Polarkoordinaten
 * und liefert eine Funktion sample(angle) => [x, y].
 *
 * @param points Array von {x, y} – idealerweise rundum verteilt, ein geschlossener Umriss.
 * @returns Funktion, die für angle in [0, 2π) den interpolierten Punkt zurückgibt.
 */
export declare function createPolarCatmullRom(points: {
    x: number;
    y: number;
}[]): (angle: number) => {
    x: number;
    y: number;
    radius: number;
};
/**
 * Catmull-Rom Spline class for creating equidistant points
 */
export declare class Catmull {
    private splineFunc;
    private center;
    constructor(points: {
        x: number;
        y: number;
    }[]);
    /**
     * Returns an array of 128 points with equidistant angles from the center
     * @returns Array of 128 points with angles evenly distributed from 0 to 2π
     */
    getEquidistantAnglePoints(): {
        x: number;
        y: number;
        radius: number;
    }[];
    /**
     * Returns an array of 128 points with equidistant radii from the center
     * @returns Array of 128 points with consistent radius distribution
     */
    getEquidistantRadiusPoints(): {
        x: number;
        y: number;
        radius: number;
    }[];
    /**
     * Binary search to find the angle that produces the closest radius to target
     * @param targetRadius The desired radius
     * @param initialAngle Starting angle for search
     * @returns Point with radius closest to target
     */
    private findAngleForRadius;
}
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