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Tracking a Door
Our hero strides into the room, closing the door behind her. It needs a cool animated 3D effect applied to it—it's really a bank vault door, with spinning lock! Track the door.
Start with the ground plane set up properly, either from a moving-camera solve or maybe using single-frame alignment.
Determine the location of the door hinge axis as well, perhaps where the door meets the floor.
Create a GeoH object with a vertical axis at the hinge location.
Unlock only that vertical axis.
Track the door either with image-based geometry tracking (a simple plane), or even just one supervised tracker anywhere on the door.
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