You can do all of those multi-touch manipulations on a Macintosh trackpad (zoom, pan, rotate, scale, etc). However, that trackpad would still be categorized as

You can do all of those multi-touch manipulations on a Macintosh trackpad (zoom, pan, rotate, scale, etc). However, that trackpad would still be categorized as a form of a mouse -- correctly, in my opinion. All of these gestures can be (and are, given that 3D modeling is historically done on desktop) handled with a standard mouse using a combination of the scroll wheel and modifier keys.