/// <summary>
/// Model initialization
/// </summary>
/// <param name="game">Game</param>
/// <param name="bufferManager">Buffer manager</param>
/// <param name="modelContent">Model content</param>
/// <param name="description">Data description</param>
/// <returns>Returns the generated drawing data objects</returns>
public static DrawingData Build(Game game, BufferManager bufferManager, ModelContent modelContent, DrawingDataDescription description)
{
DrawingData res = new DrawingData(bufferManager);
//Animation
if (description.LoadAnimation)
{
InitializeSkinningData(ref res, modelContent);
}
//Images
InitializeTextures(ref res, game, modelContent, description.TextureCount);
//Materials
InitializeMaterials(ref res, modelContent);
//Skins & Meshes
InitializeGeometry(ref res, modelContent, description);
//Update meshes into device
InitializeMeshes(ref res, bufferManager, description.Instanced ? description.Instances : 0);
//Lights
InitializeLights(ref res, modelContent);
return(res);
}
/// <summary>
/// Initialize materials
/// </summary>
/// <param name="drw">Drawing data</param>
/// <param name="modelContent">Model content</param>
private static void InitializeMaterials(ref DrawingData drw, ModelContent modelContent)
{
foreach (string mat in modelContent.Materials?.Keys)
{
var effectInfo = modelContent.Materials[mat];
MeshMaterial meshMaterial = new MeshMaterial()
{
Material = new Material(effectInfo),
EmissionTexture = drw.Textures[effectInfo.EmissionTexture],
AmbientTexture = drw.Textures[effectInfo.AmbientTexture],
DiffuseTexture = drw.Textures[effectInfo.DiffuseTexture],
SpecularTexture = drw.Textures[effectInfo.SpecularTexture],
ReflectiveTexture = drw.Textures[effectInfo.ReflectiveTexture],
NormalMap = drw.Textures[effectInfo.NormalMapTexture],
};
drw.Materials.Add(mat, meshMaterial);
}
}
/// <summary>
/// Initialize lights
/// </summary>
/// <param name="drw">Drawing data</param>
/// <param name="modelContent">Model content</param>
private static void InitializeLights(ref DrawingData drw, ModelContent modelContent)
{
List <SceneLight> lights = new List <SceneLight>();
foreach (var key in modelContent.Lights.Keys)
{
var l = modelContent.Lights[key];
if (l.LightType == LightContentTypes.Point)
{
lights.Add(l.CreatePointLight());
}
else if (l.LightType == LightContentTypes.Spot)
{
lights.Add(l.CreateSpotLight());
}
}
drw.Lights = lights.ToArray();
}
/// <summary>
/// Initialize mesh buffers in the graphics device
/// </summary>
/// <param name="drw">Drawing data</param>
/// <param name="game">Game</param>
private static void InitializeMeshes(ref DrawingData drw, BufferManager bufferManager, int instances)
{
foreach (var dictionary in drw.Meshes.Values)
{
foreach (var mesh in dictionary.Values)
{
//Vertices
mesh.VertexBuffer = bufferManager.Add(mesh.Name, mesh.Vertices.ToArray(), false, instances);
if (mesh.Indexed)
{
//Indices
mesh.IndexBuffer = bufferManager.Add(mesh.Name, mesh.Indices.ToArray(), false);
}
else
{
mesh.IndexBuffer = new BufferDescriptor(-1, -1, 0);
}
}
}
}
/// <summary>
/// Initialize skinning data
/// </summary>
/// <param name="drw">Drawing data</param>
/// <param name="modelContent">Model content</param>
private static void InitializeSkinningData(ref DrawingData drw, ModelContent modelContent)
{
if (modelContent.SkinningInfo?.Count > 0)
{
//Use the definition to read animation data into a clip dictionary
foreach (var sInfo in modelContent.SkinningInfo.Values)
{
if (drw.SkinningData != null)
{
continue;
}
drw.SkinningData = new SkinningData(sInfo.Skeleton);
var animations = InitializeJoints(modelContent, sInfo.Skeleton.Root, sInfo.Controllers);
drw.SkinningData.Initialize(
animations,
modelContent.Animations.Definition);
}
}
}
/// <summary>
/// Initialize textures
/// </summary>
/// <param name="drw">Drawing data</param>
/// <param name="game">Game</param>
/// <param name="modelContent">Model content</param>
/// <param name="textureCount">Texture count</param>
private static void InitializeTextures(ref DrawingData drw, Game game, ModelContent modelContent, int textureCount)
{
if (modelContent.Images != null)
{
foreach (string images in modelContent.Images.Keys)
{
var info = modelContent.Images[images];
var view = game.ResourceManager.CreateResource(info);
if (view != null)
{
drw.Textures.Add(images, view);
//Set the maximum texture index in the model
if (info.Count > textureCount)
{
textureCount = info.Count;
}
}
}
}
}
/// <summary>
/// Initilize geometry
/// </summary>
/// <param name="drw">Drawing data</param>
/// <param name="modelContent">Model content</param>
/// <param name="description">Description</param>
private static void InitializeGeometry(ref DrawingData drw, ModelContent modelContent, DrawingDataDescription description)
{
List <Triangle> volumeMesh = new List <Triangle>();
foreach (string meshName in modelContent.Geometry.Keys)
{
//Get skinning data
var isSkinned = ReadSkinningData(
description, modelContent, meshName,
out var bindShapeMatrix, out var weights, out var jointNames);
//Process the mesh geometry material by material
var dictGeometry = modelContent.Geometry[meshName];
foreach (string material in dictGeometry.Keys)
{
var geometry = dictGeometry[material];
if (geometry.IsVolume)
{
//If volume, store position only
volumeMesh.AddRange(geometry.GetTriangles());
}
else
{
//Get vertex type
var vertexType = GetVertexType(description, drw.Materials, geometry.VertexType, isSkinned, material);
//Process the vertex data
ProcessVertexData(
description, geometry, vertexType,
out var vertices, out var indices);
for (int i = 0; i < vertices.Length; i++)
{
vertices[i] = vertices[i].Transform(bindShapeMatrix);
}
//Convert the vertex data to final mesh data
var vertexList = VertexData.Convert(
vertexType,
vertices,
weights,
jointNames);
if (vertexList.Any())
{
//Create and store the mesh into the drawing data
Mesh nMesh = new Mesh(
meshName,
geometry.Topology,
vertexList.ToArray(),
indices);
drw.Meshes.Add(meshName, geometry.Material, nMesh);
}
}
}
}
drw.VolumeMesh = volumeMesh.ToArray();
}
/// <summary>
/// Base model
/// </summary>
/// <param name="scene">Scene</param>
/// <param name="description">Object description</param>
protected BaseModel(Scene scene, BaseModelDescription description)
: base(scene, description)
{
var desc = new DrawingDataDescription()
{
Instanced = description.Instanced,
Instances = description.Instances,
LoadAnimation = description.LoadAnimation,
LoadNormalMaps = description.LoadNormalMaps,
TextureCount = this.TextureCount,
DynamicBuffers = description.Dynamic,
};
IEnumerable <ModelContent> geo;
if (!string.IsNullOrEmpty(description.Content.ModelContentFilename))
{
string contentFile = Path.Combine(description.Content.ContentFolder, description.Content.ModelContentFilename);
var contentDesc = Helper.DeserializeFromFile <ModelContentDescription>(contentFile);
var loader = contentDesc.GetLoader();
geo = loader.Load(description.Content.ContentFolder, contentDesc);
}
else if (description.Content.ModelContentDescription != null)
{
var loader = description.Content.ModelContentDescription.GetLoader();
geo = loader.Load(description.Content.ContentFolder, description.Content.ModelContentDescription);
}
else if (description.Content.ModelContent != null)
{
geo = new[] { description.Content.ModelContent };
}
else
{
throw new EngineException("No geometry found in description.");
}
if (geo.Count() == 1)
{
var iGeo = geo.First();
if (description.Optimize)
{
iGeo.Optimize();
}
var drawable = DrawingData.Build(this.Game, this.BufferManager, iGeo, desc);
this.meshesByLOD.Add(LevelOfDetail.High, drawable);
}
else
{
var content = new LevelOfDetailModelContent(geo, description.Optimize);
foreach (var lod in content.Keys)
{
if (this.defaultLevelOfDetail == LevelOfDetail.None)
{
this.defaultLevelOfDetail = lod;
}
var drawable = DrawingData.Build(this.Game, this.BufferManager, content[lod], desc);
this.meshesByLOD.Add(lod, drawable);
}
}
this.UseAnisotropicFiltering = description.UseAnisotropicFiltering;
}
