Method getParticlesByLine

external/.scrollLibs.js:17414–17416

(line)

    return this.getSubparticles().find(particle => particle.getLine() === line)
  }
  getParticlesByLine(line) {
    return this.filter(particle => particle.getLine() === line)
  }
  toggleLine(line) {
    const lines = this.getParticlesByLine(line)
    if (lines.length) {