modeling systems use 2d graphical user interfaces. New innovations
like Oculus Rift or Microsoft Hololens facilitate 3d user interfaces
for 3d modeling.
there is no way to use a 3d input device for modeling
operations in a commercial 3d modeling system. Furthermore
the extra dimensionality of 3d input devices gives the user more freedom
but may lead to additional complexity in the user interface.
demonstrates how to use 3d finger tracking by using constraints
in the 3d modeling process.
It provides modeling planes and modeling lines. Modeling
operations are chosen by selecting vertices of objects. The modeling
operation can be executed by using a 2d or a 3d input device.
Using a 2d
input device (touch screen, mouse) the 2d position is projected onto
the 3d modeling plane. Modeling operations are started by pressing a
mouse button or touching the screen. They are finished by releasing
the mouse button or lifting the finger from the screen.
Using a 3d
input device (finger tracking) the modeling operation is started by
approaching the vertex to select. Users can modify the shape of an object
by moving their fingers within a 3d layer surrounding the modeling plane.
They can finish the modeling operation by leaving the 3d layer.
planes reduce the complexity of the user interface
by providing constraints.
- Modeling planes provide an easy way of integrating a 3d input
device into a commercial 3d modeling system.
- Modeling planes improve learnability by using the
same modeling operations with either a 2d or a 3d input device.
- Starting operations with touching in 3d is more precise
than using finger gestures to start operations.
versions in the videos: