Sketch-based applications are rapidly gaining popu-
larity in 3D modelling because of the intuitive pen-
and-paper metaphor. Even inexperienced users with
little computer graphics and digital design back-
ground can use them to create 3D models rapidly.
However, the development of sketch-based applica-
tions is usually dicult and time consuming. In this
paper, we present a framework for simplifying the de-
velopment of sketch-based 3D modelling applications.
The framework integrates existing techniques for 3D
sketch processing with a processing pipeline for sketch
input, a state-machine for dening processing param-
eters and modes, and a customised event handler.
The modular design means that the functionality of
the framework can be easily extended in the future.
Experimental results suggest that the framework is
easy to use and the implemented functionalities work
correctly.
Keywords:
sketch-based modelling, sketch API,
sketch recognition, surface reconstruction