/**
 * Pine Tree — Codels 3D model library
 * License: CC0-1.0 · Units: meters · Y-up · Front: +Z · Origin: center of the base (y = 0)
 * Triangles: 80 · Size (W × H × D): 1.28 × 3.20 × 1.25 m
 *
 * Usage:
 *   import { createPineTree } from './pine-tree.js';
 *   
 *   const model = createPineTree();
 *   model.position.set(0, 0, 0);
 *   scene.add(model);
 */
import * as THREE from 'three';

const deg = THREE.MathUtils.degToRad;

export function createPineTree() {
  const root = new THREE.Group();
  root.name = 'PineTree';

  // Materials
  const barkMat = new THREE.MeshStandardMaterial({ name: 'bark', color: 0x6b4a2f, roughness: 0.95, flatShading: true });
  const leafMat = new THREE.MeshStandardMaterial({ name: 'leaf', color: 0x2f7d4a, roughness: 0.85, flatShading: true });

  // Parts
  const trunk = new THREE.Mesh(new THREE.CylinderGeometry(0.112, 0.176, 0.896, 6), barkMat);
  trunk.name = 'trunk';
  trunk.position.set(0, 0.448, 0);
  root.add(trunk);
  const tier1 = new THREE.Mesh(new THREE.ConeGeometry(0.6547, 1.0317, 7), leafMat);
  tier1.name = 'tier1';
  tier1.position.set(0, 1.0535, 0);
  root.add(tier1);
  const tier2 = new THREE.Mesh(new THREE.ConeGeometry(0.528, 1.0317, 7), leafMat);
  tier2.name = 'tier2';
  tier2.position.set(0, 1.597, 0);
  tier2.rotation.set(0, deg(23), 0);
  root.add(tier2);
  const tier3 = new THREE.Mesh(new THREE.ConeGeometry(0.4013, 1.0317, 7), leafMat);
  tier3.name = 'tier3';
  tier3.position.set(0, 2.1406, 0);
  tier3.rotation.set(0, deg(46), 0);
  root.add(tier3);
  const tier4 = new THREE.Mesh(new THREE.ConeGeometry(0.2746, 1.0317, 7), leafMat);
  tier4.name = 'tier4';
  tier4.position.set(0, 2.6842, 0);
  tier4.rotation.set(0, deg(69), 0);
  root.add(tier4);

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

export default createPineTree;