| 摘要 |
<p>Complex 3D low relief models, represented as triangular mesh stored as industry standard (STL) or proprietary format are wrapped directly onto computer aided design (CAD) models of 3D objects for manufacturing a prototype or mould or die cavity or core. The mesh representation of the relief is positioned over the target surface and its nodes projected onto it using chord length, planar, cylindrical, conical or isoparametric lines. The nodes are offset to set a relief height. Trim curves are formed where they meet the target surface. As a feature of the underlying target model the relief is rewrapped automatically when the target is modified. The target surface may be unwrapped as a template for creating the initial relief texture. Relief and target model geometry is stored in the same database. The method provides a rapid method for creating complex decoration on things like bottles and containers avoiding manual processes like etching and engraving.</p> |
