Kav/Geometry/Model.cs

using Microsoft.Xna.Framework;

namespace Kav
{
    public class Model
    {
        public Mesh[] Meshes { get; }
        public BoundingBox BoundingBox { get; }

        public Color Albedo 
        { 
            set 
            {
                foreach (var mesh in Meshes)
                {
                    foreach (var meshPart in mesh.MeshParts)
                    {
                        meshPart.Albedo = value.ToVector3();
                    }
                }
            }
        }

        public float Metallic
        {
            set
            {
                foreach (var mesh in Meshes)
                {
                    foreach (var meshPart in mesh.MeshParts)
                    {
                        meshPart.Metallic = value;
                    }
                }
            }   
        }

        public float Roughness
        {
            set
            {
                foreach (var mesh in Meshes)
                {
                    foreach (var meshPart in mesh.MeshParts)
                    {
                        meshPart.Roughness = value;
                    }
                }
            }   
        }

        public Model(Mesh[] meshes)
        {
            Meshes = meshes;

            BoundingBox boundingBox = new BoundingBox();
            foreach (var mesh in Meshes)
            {
                boundingBox = BoundingBox.CreateMerged(boundingBox, mesh.BoundingBox);
            }

            BoundingBox = boundingBox;
        }

        public void DisableAlbedoMaps()
        {
            foreach (var mesh in Meshes)
            {
                foreach (var meshPart in mesh.MeshParts)
                {
                    meshPart.DisableAlbedoMap = true;
                }
            }
        }

        public void DisableNormalMaps()
        {
            foreach (var mesh in Meshes)
            {
                foreach (var meshPart in mesh.MeshParts)
                {
                    meshPart.DisableNormalMap = true;
                }
            }
        }
        
        public void DisableMetallicRoughnessMaps()
        {
            foreach (var mesh in Meshes)
            {
                foreach (var meshPart in mesh.MeshParts)
                {
                    meshPart.DisableMetallicRoughnessMap = true;
                }
            }
        }
    }
}