/// <summary>
/// Converts this <see cref="SceneBuilder"/> instance into a <see cref="ModelRoot"/> instance.
/// </summary>
/// <param name="useStridedBuffers">True to generate strided vertex buffers whenever possible.</param>
/// <returns>A new <see cref="ModelRoot"/> instance.</returns>
public ModelRoot ToGltf2(SceneBuilderSchema2Settings settings)
{
var context = new Schema2SceneBuilder();
var dstModel = ModelRoot.CreateModel();
context.AddGeometryResources(dstModel, new[] { this }, settings);
var dstScene = dstModel.UseScene(0);
dstScene.Name = this.Name;
context.AddScene(dstScene, this);
dstModel.DefaultScene = dstScene;
return(dstModel);
}
/// <summary>
/// Convertes a collection of <see cref="SceneBuilder"/> instances to a single <see cref="ModelRoot"/> instance.
/// </summary>
/// <param name="srcScenes">A collection of scenes</param>
/// <param name="useStridedBuffers">True to generate strided vertex buffers whenever possible.</param>
/// <returns>A new <see cref="ModelRoot"/> instance.</returns>
public static ModelRoot ToSchema2(IEnumerable <SceneBuilder> srcScenes, SceneBuilderSchema2Settings settings)
{
Guard.NotNull(srcScenes, nameof(srcScenes));
var context = new Schema2SceneBuilder();
var dstModel = ModelRoot.CreateModel();
context.AddGeometryResources(dstModel, srcScenes, settings);
foreach (var srcScene in srcScenes)
{
var dstScene = dstModel.UseScene(dstModel.LogicalScenes.Count);
dstScene.Name = srcScene.Name;
context.AddScene(dstScene, srcScene);
}
return(dstModel);
}
/// <summary>
/// Converts a collection of <see cref="SceneBuilder"/> instances to a single <see cref="ModelRoot"/> instance.
/// </summary>
/// <param name="srcScenes">A collection of scenes</param>
/// <param name="settings">Conversion settings.</param>
/// <returns>A new <see cref="ModelRoot"/> instance.</returns>
public static ModelRoot ToGltf2(IEnumerable <SceneBuilder> srcScenes, SceneBuilderSchema2Settings settings)
{
Guard.NotNull(srcScenes, nameof(srcScenes));
var context = new Schema2SceneBuilder();
var dstModel = ModelRoot.CreateModel();
context.AddGeometryResources(dstModel, srcScenes, settings);
foreach (var srcScene in srcScenes)
{
var dstScene = dstModel.UseScene(dstModel.LogicalScenes.Count);
srcScene.TryCopyNameAndExtrasTo(dstScene);
context.AddScene(dstScene, srcScene);
}
dstModel.DefaultScene = dstModel.LogicalScenes[0];
return(dstModel);
}
public void AddGeometryResources(ModelRoot root, IEnumerable <SceneBuilder> srcScenes, SceneBuilderSchema2Settings settings)
{
// gather all unique MeshBuilders
var srcMeshes = srcScenes
.SelectMany(item => item.Instances)
.Select(item => item.Content?.GetGeometryAsset())
.Where(item => item != null)
.Distinct()
.ToArray();
// gather all unique MaterialBuilders
var materialGroups = srcMeshes
.SelectMany(item => item.Primitives)
.Where(item => !Geometry.MeshBuilderToolkit.IsEmpty(item))
.Select(item => item.Material)
.Distinct()
.ToList()
// group by equal content, to reduce material splitting whenever possible.
.GroupBy(item => item, Materials.MaterialBuilder.ContentComparer);
// create a Schema2.Material for every MaterialBuilder.
foreach (var mg in materialGroups)
{
var val = root.CreateMaterial(mg.Key);
foreach (var key in mg)
{
_Materials[key] = val;
}
}
// create a Schema2.Mesh for every MeshBuilder.
var dstMeshes = root.CreateMeshes(mat => _Materials[mat], settings, srcMeshes);
for (int i = 0; i < srcMeshes.Length; ++i)
{
_Meshes[srcMeshes[i]] = dstMeshes[i];
}
// TODO: here we could check that every dstMesh has been correctly created.
}
/// <summary>
/// Converts this <see cref="SceneBuilder"/> instance into a <see cref="ModelRoot"/> instance.
/// </summary>
/// <param name="settings">Conversion settings.</param>
/// <returns>A new <see cref="ModelRoot"/> instance.</returns>
public ModelRoot ToGltf2(SceneBuilderSchema2Settings settings)
{
return(ToGltf2(new[] { this }, settings));
}