public static async Task <SceneCollection> ImportAsync(
string filePath,
ColladaImportOptions options,
Progress <float> progress,
CancellationToken cancel)
{
if (!File.Exists(filePath))
{
return(null);
}
ImportOptions = options;
SceneCollection scenes = new SceneCollection();
var schemeReader = new XMLSchemaDefinition <COLLADA>();
var root = await schemeReader.ImportAsync(filePath, (ulong)options.IgnoreFlags, progress, cancel);
if (root != null)
{
Matrix4 baseTransform = options.InitialTransform.Matrix;
var asset = root.AssetElement;
if (asset != null)
{
var unit = asset.UnitElement;
var coord = asset.UpAxisElement;
if (unit != null)
{
WriteLine($"Units: {unit.Name} (to meters: {unit.Meter.ToString()})");
baseTransform = baseTransform * Matrix4.CreateScale(unit.Meter);
}
if (coord != null)
{
WriteLine("Up axis: " + coord.StringContent.Value.ToString());
switch (coord.StringContent.Value)
{
case Asset.EUpAxis.X_UP:
baseTransform = Matrix4.XupToYup * baseTransform;
break;
case Asset.EUpAxis.Y_UP:
break;
case Asset.EUpAxis.Z_UP:
baseTransform = Matrix4.ZupToYup * baseTransform;
break;
}
}
}
COLLADA.Scene scene = root.GetChild <COLLADA.Scene>();
if (scene != null)
{
var visualScenes = scene.GetChildren <COLLADA.Scene.InstanceVisualScene>();
foreach (var visualSceneRef in visualScenes)
{
var visualScene = visualSceneRef.GetUrlInstance();
if (visualScene != null)
{
Scene colladaScene = new Scene();
//Collect information for objects and root bones
List <Bone> rootBones = new List <Bone>();
List <ObjectInfo> objects = new List <ObjectInfo>();
List <Camera> cameras = new List <Camera>();
List <Light> lights = new List <Light>();
var nodes = visualScene.NodeElements;
foreach (var node in nodes)
{
Bone b = EnumNode(null, node, nodes, objects, baseTransform, Matrix4.Identity, lights, cameras, options.IgnoreFlags);
if (b != null)
{
rootBones.Add(b);
}
}
colladaScene.Model = new Model()
{
Name = Path.GetFileNameWithoutExtension(filePath)
};
//Create meshes after all bones have been created
bool hasBones = rootBones.Count != 0;
if (hasBones)
{
colladaScene.Model.Skeleton = new Skeleton(rootBones.ToArray());
}
foreach (ObjectInfo obj in objects)
{
if (obj.UsesController && !hasBones)
{
WriteLine($"Object {obj._node.Name} uses bones but the model has none. Skipping this object.");
continue;
}
obj.Initialize(colladaScene.Model, visualScene, options.GenerateBinormals, options.GenerateTangents);
}
scenes.Scenes.Add(colladaScene);
//if (!options.IgnoreFlags.HasFlag(EIgnoreFlags.Animations))
//{
// SkeletalAnimation anim = null;
// float animationLength = 0.0f;
// foreach (LibraryAnimations lib in root.GetLibraries<LibraryAnimations>())
// foreach (LibraryAnimations.Animation animElem in lib.AnimationElements)
// {
// if (anim == null)
// {
// data.PropertyAnimations = new List<BasePropAnim>();
// anim = new SkeletalAnimation()
// {
// Name = Path.GetFileNameWithoutExtension(filePath),
// Looped = true,
// };
// }
// ParseAnimation(animElem, anim, visualScene, data.PropertyAnimations, ref animationLength);
// }
// if (anim != null && animationLength > 0.0f)
// {
// anim.SetLength(animationLength, false);
// PrintLine("Model animation imported: " + animationLength.ToString() + " seconds / " + Math.Ceiling(animationLength * 60.0f).ToString() + " frames long at 60fps.");
// data.Models[0].Animation = anim;
// }
//}
}
}
}
}
ImportOptions = null;
return(scenes);
}
public static Task <SceneCollection> ImportAsync(
string filePath,
ColladaImportOptions options)
=> ImportAsync(filePath, options, null, CancellationToken.None);
