Default TrackballRig.radius: 1 — the virtual sphere's silhouette
touches the nearer pair of viewport edges. Values below 1 make the sphere
smaller than the viewport (more of the drag area is on the hyperbolic sheet,
so the spin is looser); above 1 make it larger (the drag feels stiffer).
Default TrackballRig.radius:
1— the virtual sphere's silhouette touches the nearer pair of viewport edges. Values below 1 make the sphere smaller than the viewport (more of the drag area is on the hyperbolic sheet, so the spin is looser); above 1 make it larger (the drag feels stiffer).