Clever Geek Handbook

Transforming 3DGroup Model Twice

I need to transform Model3DGroup twice (set position once and set rotation once). I've tried this:

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);

And it was not good. I've searched google and SO and can't find anything.

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1 answer


For this you need the TransformGroup class.

This class will combine your transforms.



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;
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