127 lines
3.6 KiB
C#
127 lines
3.6 KiB
C#
// MonoGame - Copyright (C) The MonoGame Team
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// This file is subject to the terms and conditions defined in
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// file 'LICENSE.txt', which is part of this source code package.
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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namespace Microsoft.Xna.Framework.Graphics
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{
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/// <summary>
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/// Represents a collection of ModelMesh objects.
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/// </summary>
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public sealed class ModelMeshCollection : ReadOnlyCollection<ModelMesh>
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{
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internal ModelMeshCollection(IList<ModelMesh> list)
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: base(list)
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{
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}
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/// <summary>
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/// Retrieves a ModelMesh from the collection, given the name of the mesh.
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/// </summary>
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/// <param name="meshName">The name of the mesh to retrieve.</param>
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public ModelMesh this[string meshName]
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{
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get
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{
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ModelMesh ret;
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if (!TryGetValue(meshName, out ret))
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throw new KeyNotFoundException();
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return ret;
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}
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}
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/// <summary>
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/// Finds a mesh with a given name if it exists in the collection.
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/// </summary>
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/// <param name="meshName">The name of the mesh to find.</param>
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/// <param name="value">The mesh named meshName, if found.</param>
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/// <returns>true if a mesh was found</returns>
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public bool TryGetValue(string meshName, out ModelMesh value)
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{
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if (string.IsNullOrEmpty(meshName))
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throw new ArgumentNullException("meshName");
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foreach (var mesh in this)
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{
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if (string.Compare(mesh.Name, meshName, StringComparison.Ordinal) == 0)
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{
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value = mesh;
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return true;
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}
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}
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value = null;
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return false;
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}
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/// <summary>
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/// Returns a ModelMeshCollection.Enumerator that can iterate through a ModelMeshCollection.
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/// </summary>
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/// <returns></returns>
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public new Enumerator GetEnumerator()
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{
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return new Enumerator(this);
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}
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/// <summary>
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/// Provides the ability to iterate through the bones in an ModelMeshCollection.
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/// </summary>
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public struct Enumerator : IEnumerator<ModelMesh>
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{
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private readonly ModelMeshCollection _collection;
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private int _position;
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internal Enumerator(ModelMeshCollection collection)
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{
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_collection = collection;
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_position = -1;
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}
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/// <summary>
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/// Gets the current element in the ModelMeshCollection.
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/// </summary>
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public ModelMesh Current { get { return _collection[_position]; } }
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/// <summary>
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/// Advances the enumerator to the next element of the ModelMeshCollection.
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/// </summary>
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public bool MoveNext()
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{
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_position++;
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return (_position < _collection.Count);
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}
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#region IDisposable
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/// <summary>
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/// Immediately releases the unmanaged resources used by this object.
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/// </summary>
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public void Dispose()
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{
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}
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#endregion
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#region IEnumerator Members
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object IEnumerator.Current
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{
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get { return _collection[_position]; }
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}
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public void Reset()
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{
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_position = -1;
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}
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#endregion
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}
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}
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}
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