有人知道如何使用Urho的Spatial Anchors吗?我看了所有样品,没找到任何东西.文档中也没有任何内容.我尝试使用常规的Holographic API:
var store = await SpatialAnchorManager.RequestStoreAsync();
var anchors = store.GetAllSavedAnchors();
store.TrySave("myanchor", SpatialAnchor.TryCreateRelativeTo(???SpatialCoordinateSystem???));
但我不知道从哪里获得空间坐标系.
最佳答案 您可以像这样创建空间锚点
var anchor = SpatialAnchor.TryCreateRelativeTo(UrhoAppView.Current.ReferenceFrame.CoordinateSystem, new System.Numerics.Vector3(x, y, -z));
store.TrySave("anchorname", anchor);
请注意,Urho具有左手坐标系,而HoloLens API具有右手坐标系,因此为负z.
您可以将锚点映射到当前系统,如下所示:
var matrix = store["anchorname"].CoordinateSystem.TryGetTransformTo(UrhoAppView.Current.ReferenceFrame.CoordinateSystem);
if (matrix.HasValue)
{
System.Numerics.Vector3 scale;
System.Numerics.Quaternion rotation;
System.Numerics.Vector3 translation;
System.Numerics.Matrix4x4.Decompose(matrix.Value, out scale, out rotation, out translation);
var q = new Quaternion(rotation.X, rotation.Y, rotation.Z, rotation.W);
var v = new Vector3(translation.X, translation.Y, -translation.Z);// -Z Right-handed to left-handed
}