mapbox-sdk/Unity/MeshGeneration/Components/TextureSelector.cs

namespace Mapbox.Unity.MeshGeneration.Components
{
    using UnityEngine;
    using Random = UnityEngine.Random;
    using Mapbox.Unity.MeshGeneration.Data;

    [RequireComponent(typeof(MeshRenderer))]
    public class TextureSelector : MonoBehaviour
    {
        private bool _useSatelliteRoof;
        private bool _textureTop;
        private bool _textureSides;

        private UnityTile _tile;
        private MeshRenderer _meshRenderer;
        private Material[] _topTextures;
        private Material[] _sideTextures;

        public void Initialize(VectorEntity ve, bool doTextureTop, bool useSatelliteRoof, Material[] topTextures, bool doTextureSides, Material[] sideTextures)
        {
            _useSatelliteRoof = useSatelliteRoof;
            _textureTop = doTextureTop;
            _textureSides = doTextureSides;

            _tile = GetComponent<UnityTile>();
            var t = transform;
            while (_tile == null && t.parent != null)
            {
                t = t.parent;
                _tile = t.GetComponent<UnityTile>();
            }
            _topTextures = topTextures;
            _sideTextures = sideTextures;
            _meshRenderer = GetComponent<MeshRenderer>();

            if (_textureSides && _sideTextures.Length > 0)
            {
                _meshRenderer.materials = new Material[2]
                {
                _topTextures[Random.Range(0, _topTextures.Length)],
                _sideTextures[Random.Range(0, _sideTextures.Length)]
                };
            }
            else if (_textureTop)
            {
                _meshRenderer.materials = new Material[1]
               {
                _topTextures[Random.Range(0, _topTextures.Length)]
               };
            }

            if (_useSatelliteRoof)
            {
				_meshRenderer.materials[0].mainTexture = _tile.GetRasterData();
                _meshRenderer.materials[0].mainTextureScale = new Vector2(1f, 1f);
            }
        }
    }

}