Made of little things.

import type { Mark } from './case.js';
export const layers = ['skin', 'muscles', 'organs', 'skeleton', 'mouth'] as const;
export type AnatomyLayer = typeof layers[number];
export const layerNames: Record<AnatomyLayer, string> = { skin: 'Skin', skeleton: 'Skeleton', muscles: 'Muscles', organs: 'Organs', mouth: 'Mouth' };
export const MOUTH_MODEL = 'bp3d-mouth-1';
export const SKELETON_MODEL = 'bp3d-skeleton-1';
export const MUSCLE_MODEL = 'bp3d-muscles-1';
export const ORGAN_MODEL = 'bp3d-organs-1';
export function markLayer(mark: Mark): AnatomyLayer {
  return mark.surface?.model === MOUTH_MODEL ? 'mouth' : mark.surface?.model === SKELETON_MODEL ? 'skeleton' : mark.surface?.model === MUSCLE_MODEL ? 'muscles' : mark.surface?.model === ORGAN_MODEL ? 'organs' : 'skin';
}