import type { CymbalParams } from './model';

// 8-inch toy cymbal in B20 bronze (E ~ 100 GPa, 8600 kg/m^3), 0.8 mm thick.
const toy: CymbalParams = {
  diameter: 0.2,
  rings: 10,
  holeRadius: 0.006,
  bowHeight: 0,
  bellDiameter: 0.07,
  bellHeight: 0,
  thickness: 0.0008,
  youngs: 1.0e11,
  density: 8600,
  soften: 30,
  t60Low: 8,
  fLow: 200,
  t60High: 4,
  fHigh: 2000,
  excitation: 'stick',
  excR: 0.85,
  excAngle: 0,
  hitAngle: 0,
  excWidth: 0.015, // wider than a stick tip: one light bead alone makes the stick chatter
  stickMass: 0.03,
  stickSpeed: 1,
  stickK: 5e8,
  malletMass: 0.03,
  malletSpeed: 2,
  malletK: 1e7,
  malletP: 2.5,
  friction: 0.3,
  strikeVel: 1,
  forcePeak: 50,
  forceMs: 0.5,
  micDistance: 1,
  micElevation: 30,
  micAzimuth: 30,
  duration: 4,
  fs: 48000,
  cfl: 0.5,
  frameRate: 2000,
};

export interface CymbalPreset {
  name: string;
  description: string;
  params: CymbalParams;
}

export const CYMBAL_PRESETS: CymbalPreset[] = [
  {
    name: 'Bow and bell, stick',
    description:
      '8" bronze cymbal, 0.8 mm, with a 12 mm bow (dome) and a 7 cm bell, 12 mm high; ~370 beads, free (nothing holds it; its rigid motion is removed). In-plane stiffness softened 30× for speed; curvature couples bending to in-plane stretching, so softening matters more here than on a flat plate. Stick at 1 m/s near the edge, spread over a 15 mm patch (a single bead would make the stick chatter). Bending is resolved to about 1.3 kHz.',
    params: { ...toy, bowHeight: 0.012, bellHeight: 0.012 },
  },
  {
    name: 'Flat 8" toy, stick (fast)',
    description:
      'Flat 0.8 mm bronze plate, 20 cm, ~370 beads, free. In-plane stiffness softened 30× for speed (a flat plate bends the same at small amplitude). Stick at 1 m/s near the edge, spread over a 15 mm patch.',
    params: toy,
  },
  {
    name: 'Flat 8" toy, real bronze (slow)',
    description: 'Same plate with real in-plane stiffness: about 5× more time steps.',
    params: { ...toy, soften: 1 },
  },
  {
    name: 'Glancing crash stroke',
    description: 'Stick at 6 m/s, 60° from the normal toward the rim, with friction: pushes the plate sideways as well as down.',
    params: { ...toy, bowHeight: 0.012, bellHeight: 0.012, stickSpeed: 6, hitAngle: 60 },
  },
  {
    name: 'Felt mallet',
    description: 'Soft 30 g mallet at 2 m/s, longer contact, darker sound.',
    params: { ...toy, excitation: 'mallet', excR: 0.7, excWidth: 0.008 },
  },
  {
    name: 'Coarse quick look',
    description: '6 rings (~120 beads): fast, but bending is only resolved to a few hundred hertz.',
    params: { ...toy, rings: 6 },
  },
];