@dominicstop/utils/lib/module/physics/CentralAttractionForce.js

Yet another event emitter written in typescript.

/**
 * Applies a central attractive force pulling the particle toward
 * a fixed center (e.g., like a spring).
 */
export class CentralAttractionForce {
    constructor(center, strength, isActive = true) {
        this.center = center;
        this.strength = strength;
        this.isActive = isActive;
    }
    ;
    /**
     * Applies a force to the particle:
     * `F = -strength * (particle.position - center)`
     *
     * This simulates a harmonic potential pulling particles inward.
     *
     * @param particle The particle to apply the force to.
     */
    apply(particle) {
        if (!this.isActive || particle.isStatic)
            return;
        const displacement = particle.position.subtractedWithOther(this.center);
        const force = displacement.multipliedByScalar(-this.strength);
        particle.applyForce(force);
    }
    ;
}
;