private async Task<Model3DGroup> LoadAsync(string model3DPath, bool freeze)
{
return await Task.Factory.StartNew(() =>
{
var mi = new ModelImporter();
if (freeze)
{
// Alt 1. - freeze the model
return mi.Load(model3DPath, null, true);
}
// Alt. 2 - create the model on the UI dispatcher
return mi.Load(model3DPath, this.dispatcher);
});
}
public void LoadModel(string path, bool transformYup, double scale)
{
var importer = new ModelImporter();
var mod = importer.Load(path);
if (mod == null || mod.Children.Count == 0)
return;
var model = (mod.Children[0] as GeometryModel3D);
if (model == null)
return;
var mesh = model.Geometry as MeshGeometry3D;
if (mesh == null)
return;
var transform = new Transform3DGroup();
if (transformYup)
transform.Children.Add(new RotateTransform3D(new AxisAngleRotation3D(new Vector3D(1, 0, 0), 90)));
transform.Children.Add(new ScaleTransform3D(scale, scale, scale));
for (int i = 0; i < mesh.Positions.Count; i++)
mesh.Positions[i] = transform.Transform(mesh.Positions[i]);
ScaleHeightOnly = false;
Geometry = mesh;
}
/// <summary>
/// Called when the source or default material changed.
/// </summary>
protected virtual void SourceChanged()
{
var importer = new ModelImporter { DefaultMaterial = this.DefaultMaterial };
this.Visual3DModel = this.Source != null ? importer.Load(this.Source) : null;
this.OnModelLoaded();
}