/** A symbolic constant that stands for particle allocation error. */
export declare const b2_invalidParticleIndex = -1;
export declare const b2_maxParticleIndex = 2147483647;
/** The default distance between particles, multiplied by the particle diameter. */
export declare const b2_particleStride = 0.75;
/** The minimum particle weight that produces pressure. */
export declare const b2_minParticleWeight = 1;
/** The upper limit for particle pressure. */
export declare const b2_maxParticlePressure = 0.25;
/** The upper limit for force between particles. */
export declare const b2_maxParticleForce = 0.5;
/** The maximum distance between particles in a triad, multiplied by the particle diameter. */
export declare const b2_maxTriadDistance = 2;
export declare const b2_maxTriadDistanceSquared: number;
/** The initial size of particle data buffers. */
export declare const b2_minParticleSystemBufferCapacity = 256;
/** The time into the future that collisions against barrier particles will be detected. */
export declare const b2_barrierCollisionTime = 2.5;
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