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Root/src/Graphics/ModelMesh.cs

#region License
/* FNA - XNA4 Reimplementation for Desktop Platforms
 * Copyright 2009-2016 Ethan Lee and the MonoGame Team
 *
 * Released under the Microsoft Public License.
 * See LICENSE for details.
 */
#endregion
 
#region Using Statements
using System.Collections.Generic;
#endregion
 
namespace Microsoft.Xna.Framework.Graphics
{
    /// <summary>
    /// Represents a mesh that is part of a Model.
    /// </summary>
    public sealed class ModelMesh
    {
        #region Public Properties
 
        /// <summary>
        /// Gets the BoundingSphere that contains this mesh.
        /// </summary>
        public BoundingSphere BoundingSphere
        {
            get;
            internal set;
        }
 
        /// <summary>
        /// Gets a collection of effects associated with this mesh.
        /// </summary>
        public ModelEffectCollection Effects
        {
            get;
            private set;
        }
 
        /// <summary>
        /// Gets the ModelMeshPart objects that make up this mesh. Each part of a mesh
        /// is composed of a set of primitives that share the same material.
        /// </summary>
        public ModelMeshPartCollection MeshParts
        {
            get;
            private set;
        }
 
        /// <summary>
        /// Gets the name of this mesh.
        /// </summary>
        public string Name
        {
            get;
            internal set;
        }
 
        /// <summary>
        /// Gets the parent bone for this mesh. The parent bone of a mesh contains a
        /// transformation matrix that describes how the mesh is located relative to
        /// any parent meshes in a model.
        /// </summary>
        public ModelBone ParentBone
        {
            get;
            internal set;
        }
 
        /// <summary>
        /// Gets or sets an object identifying this mesh.
        /// </summary>
        public object Tag
        {
            get;
            set;
        }
 
        #endregion
 
        #region Private Variables
 
        private GraphicsDevice graphicsDevice;
 
        #endregion
 
        #region Public Constructors
 
        public ModelMesh(GraphicsDevice graphicsDevice, List<ModelMeshPart> parts)
        {
            // TODO: Complete member initialization
            this.graphicsDevice = graphicsDevice;
 
            MeshParts = new ModelMeshPartCollection(parts);
 
            foreach (ModelMeshPart part in parts)
            {
                part.parent = this;
            }
 
            Effects = new ModelEffectCollection();
        }
 
        #endregion
 
        #region Public Methods
 
        /// <summary>
        /// Draws all of the ModelMeshPart objects in this mesh, using their current
        /// Effect settings.
        /// </summary>
        public void Draw()
        {
            foreach (ModelMeshPart part in MeshParts)
            {
                Effect effect = part.Effect;
 
                if (part.PrimitiveCount > 0)
                {
                    graphicsDevice.SetVertexBuffer(part.VertexBuffer);
                    graphicsDevice.Indices = part.IndexBuffer;
 
                    foreach (EffectPass pass in effect.CurrentTechnique.Passes)
                    {
                        pass.Apply();
                        graphicsDevice.DrawIndexedPrimitives(
                            PrimitiveType.TriangleList,
                            part.VertexOffset,
                            0,
                            part.NumVertices,
                            part.StartIndex,
                            part.PrimitiveCount
                        );
                    }
                }
            }
        }
 
        #endregion
    }
}

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