This thesis presents the development of a sketch-based alignment design tool for the early planning phases of infrastructure projects. Designing an alignment, the main axis of any linear infrastructure project, is an iterative and time-consuming process. Once a preliminary design is found, it is manually converted to CAD software for the detail design - a laborious task. An interactive, sketch-based alignment design tool, however, could enable the automatic reconstruction of preliminary designs in domain-specific CAD software. For this tool, a sketching functionality and a sketch-interpreting algorithm were developed. The sketch-interpreting algorithm splits the alignment sketch into a sequence of alignment elements (lines, circular arcs and clothoids) by evaluating the curvature along the drawn curve. The findings lay the groundwork for automatically reconstructing the alignment.     «

This thesis presents the development of a sketch-based alignment design tool for the early planning phases of infrastructure projects. Designing an alignment, the main axis of any linear infrastructure project, is an iterative and time-consuming process. Once a preliminary design is found, it is manually converted to CAD software for the detail design - a laborious task. An interactive, sketch-based alignment design tool, however, could enable the automatic reconstruction of preliminary designs...     »