转换Model3DGroup两次

Question

我需要转换一次Model3DGroup两次（一次设置位置，一次设置旋转）。我试过这个：

var model = ModelImporter.Load(gameAssetPath); 
model.Transform = new TranslateTransform3D(
     placedObject.SpawnCoordinates.X, 
     placedObject.SpawnCoordinates.Y, 
     placedObject.SpawnCoordinates.Z); 
var modelRotation = new Model3DGroup(); 
modelRotation.Children.Add(model); 
modelRotation.Transform = new RotateTransform3D(new AxisAngleRotation3D(), placedObject.SpawnCoordinates.Roll, placedObject.SpawnCoordinates.Pitch, placedObject.SpawnCoordinates.Yaw); 

而这是一个不行。我搜索了谷歌和SO，似乎无法找到任何东西。

Answer 1

你需要TransformGroup这个类。

该课程将结合您的转换。

var model = ModelImporter.Load(gameAssetPath); 
var modelRotation = new Model3DGroup(); 
modelRotation.Children.Add(model); 
var t1 = new TranslateTransform3D(
     placedObject.SpawnCoordinates.X, 
     placedObject.SpawnCoordinates.Y, 
     placedObject.SpawnCoordinates.Z); 
var t2 = new RotateTransform3D(
     new AxisAngleRotation3D(), 
     placedObject.SpawnCoordinates.Roll, 
     placedObject.SpawnCoordinates.Pitch, 
     placedObject.SpawnCoordinates.Yaw); 
var tg = new TransformGroup(); 
tg.Children.Add(t1); 
tg.Children.Add(t2); 
modelRotation.Transform = tg;