/**
 * Grass Tuft — Codels 3D model library
 * License: CC0-1.0 · Units: meters · Y-up · Front: +Z · Origin: center of the base (y = 0)
 * Triangles: 72 · Size (W × H × D): 0.36 × 0.36 × 0.42 m
 *
 * Usage:
 *   import { createGrassTuft } from './grass-tuft.js';
 *   
 *   const model = createGrassTuft();
 *   model.position.set(0, 0, 0);
 *   scene.add(model);
 */
import * as THREE from 'three';

const deg = THREE.MathUtils.degToRad;

export function createGrassTuft() {
  const root = new THREE.Group();
  root.name = 'GrassTuft';

  // Materials
  const grassMat = new THREE.MeshStandardMaterial({ name: 'grass', color: 0x67a64a, roughness: 0.9, flatShading: true });
  const grassDarkMat = new THREE.MeshStandardMaterial({ name: 'grassDark', color: 0x5c883d, roughness: 0.9, flatShading: true });
  const grassLightMat = new THREE.MeshStandardMaterial({ name: 'grassLight', color: 0x6baf5c, roughness: 0.9, flatShading: true });

  // Parts
  const tuft = new THREE.Group();
  tuft.name = 'tuft';
  tuft.position.set(0, 0.0059, 0);
  root.add(tuft);
  const blade1 = new THREE.Mesh(new THREE.ConeGeometry(0.033, 0.3445, 3), grassDarkMat);
  blade1.name = 'blade1';
  blade1.position.set(0.0519, 0.1679, -0.0111);
  blade1.rotation.set(deg(132.4025), deg(72.4357), deg(-133.767));
  blade1.scale.set(1, 1, 0.35);
  tuft.add(blade1);
  const blade2 = new THREE.Mesh(new THREE.ConeGeometry(0.0261, 0.2883, 3), grassMat);
  blade2.name = 'blade2';
  blade2.position.set(-0.0679, 0.1378, 0.047);
  blade2.rotation.set(deg(28.2424), deg(-51.8866), deg(22.9101));
  blade2.scale.set(1, 1, 0.35);
  tuft.add(blade2);
  const blade3 = new THREE.Mesh(new THREE.ConeGeometry(0.0282, 0.368, 3), grassLightMat);
  blade3.name = 'blade3';
  blade3.position.set(-0.0073, 0.176, -0.1055);
  blade3.rotation.set(deg(162.9761), deg(-3.7891), deg(178.8408));
  blade3.scale.set(1, 1, 0.35);
  tuft.add(blade3);
  const blade4 = new THREE.Mesh(new THREE.ConeGeometry(0.0269, 0.2928, 3), grassDarkMat);
  blade4.name = 'blade4';
  blade4.position.set(0.0589, 0.1401, 0.0867);
  blade4.rotation.set(deg(20.1544), deg(32.5309), deg(-11.1649));
  blade4.scale.set(1, 1, 0.35);
  tuft.add(blade4);
  const blade5 = new THREE.Mesh(new THREE.ConeGeometry(0.029, 0.3047, 3), grassMat);
  blade5.name = 'blade5';
  blade5.position.set(-0.095, 0.1482, 0.0103);
  blade5.rotation.set(deg(65.6164), deg(-75.3138), deg(64.893));
  blade5.scale.set(1, 1, 0.35);
  tuft.add(blade5);
  const blade6 = new THREE.Mesh(new THREE.ConeGeometry(0.0265, 0.2935, 3), grassLightMat);
  blade6.name = 'blade6';
  blade6.position.set(0.1067, 0.1313, -0.0646);
  blade6.rotation.set(deg(136.0447), deg(49.918), deg(-143.5831));
  blade6.scale.set(1, 1, 0.35);
  tuft.add(blade6);
  const blade7 = new THREE.Mesh(new THREE.ConeGeometry(0.027, 0.2937, 3), grassDarkMat);
  blade7.name = 'blade7';
  blade7.position.set(-0.0587, 0.1275, 0.1174);
  blade7.rotation.set(deg(32.534), deg(-22.8403), deg(13.9073));
  blade7.scale.set(1, 1, 0.35);
  tuft.add(blade7);
  const blade8 = new THREE.Mesh(new THREE.ConeGeometry(0.0309, 0.2492, 3), grassMat);
  blade8.name = 'blade8';
  blade8.position.set(-0.0681, 0.1139, -0.1217);
  blade8.rotation.set(deg(153.0703), deg(-26.513), deg(167.2235));
  blade8.scale.set(1, 1, 0.35);
  tuft.add(blade8);
  const blade9 = new THREE.Mesh(new THREE.ConeGeometry(0.0323, 0.2574, 3), grassLightMat);
  blade9.name = 'blade9';
  blade9.position.set(0.1245, 0.1097, 0.0616);
  blade9.rotation.set(deg(54.1479), deg(49.7995), deg(-46.5871));
  blade9.scale.set(1, 1, 0.35);
  tuft.add(blade9);
  const blade10 = new THREE.Mesh(new THREE.ConeGeometry(0.0279, 0.238, 3), grassDarkMat);
  blade10.name = 'blade10';
  blade10.position.set(-0.1285, 0.1045, 0.0795);
  blade10.rotation.set(deg(45.9759), deg(-48.3011), deg(37.6871));
  blade10.scale.set(1, 1, 0.35);
  tuft.add(blade10);
  const blade11 = new THREE.Mesh(new THREE.ConeGeometry(0.0248, 0.233, 3), grassMat);
  blade11.name = 'blade11';
  blade11.position.set(0.0719, 0.0902, -0.1477);
  blade11.rotation.set(deg(137.768), deg(19.8255), deg(-162.8878));
  blade11.scale.set(1, 1, 0.35);
  tuft.add(blade11);
  const blade12 = new THREE.Mesh(new THREE.ConeGeometry(0.0273, 0.1919, 3), grassLightMat);
  blade12.name = 'blade12';
  blade12.position.set(0.0076, 0.0758, 0.1428);
  blade12.rotation.set(deg(37.8795), deg(2.4185), deg(-1.8801));
  blade12.scale.set(1, 1, 0.35);
  tuft.add(blade12);

  root.traverse((o) => {
    if (o.isMesh) {
      o.castShadow = true;
      o.receiveShadow = true;
    }
  });
  return root;
}

export default createGrassTuft;