07-27-2021, 08:25 AM
The order of transformations is important. If you first rotate the model and then scale it, then the rotated model will be scaled and this can stretch the model in a way that is not intended.
To apply multiple transformations first check that the center of the 3D model is at coordinates (0, 0, 0) - around this point the model will be rotated and from that point the scaling will be applied. This is also called a pivot point. If the pivot point is somewhere else, then you can first apply a translation to move the center to that point.
Then add scale transformations, after that add rotation and finally add a translation.
You can also use StandardTransfrom3D that comes with Ab3d.PowerToys and is not a transformation from WPF 3D objects model. This requires a different usage pattern - see the "Utilities / StadardTransform3D sample" for more information.
To apply multiple transformations first check that the center of the 3D model is at coordinates (0, 0, 0) - around this point the model will be rotated and from that point the scaling will be applied. This is also called a pivot point. If the pivot point is somewhere else, then you can first apply a translation to move the center to that point.
Then add scale transformations, after that add rotation and finally add a translation.
You can also use StandardTransfrom3D that comes with Ab3d.PowerToys and is not a transformation from WPF 3D objects model. This requires a different usage pattern - see the "Utilities / StadardTransform3D sample" for more information.
Andrej Benedik