Finding Mold-Piece Regions Using Computer Graphics Hardware
An important step in the mold design process that ensures disassembly of mold pieces consists of identifying various regions on the part that will be formed by different mold pieces. This paper presents an efficient and robust algorithm to find and highlight the mold-piece regions on a part. The algorithm can be executed on current-generation computer graphics hardware. The complexity of the algorithm solely depends on the time to render the given part. By using a system that can quickly find various mold-piece regions on a part, designers can easily optimize the part and mold design and if needed make appropriate corrections upfront, streamlining the subsequent design steps.
KeywordsView Direction Mold Design Parting Direction Visibility Sampling Contour Edge
Unable to display preview. Download preview PDF.
- [Kett99]Kettner, L.: Software Design in Computational Geometry and Contour-Edge Based Polyhedron Visualization. PhD Thesis, ETH Zürich, Institute of Theoretical Computer Science (September 1999)Google Scholar
- [Kilg01]Kilgard, M.: Shadow Mapping with Today’s Hardware. Technical presentation, http://developer.nvidia.com/object/ogl_shadowmap.html
- [Khar05]Khardekar, Burton, McMains: Finding feasible mold parting directions using graphics hardware. In: Proceedings of the 2005 ACM symposium on Solid and Physical Modeling, Cambridge, MA, June 2005, pp. 233–243 (2005)Google Scholar
- [Reev87]Reeves, W.T., Salesin, D.H., Cook, R.L.: Rendering antialiased shadows with depth maps. In: Computer Graphics (SIGGRAPH 1987 Proceedings), July 1987, pp. 283–291 (1987)Google Scholar
- [Wang94]Wang, Y., Molnar, S.: Second-Depth Shadow Mapping. UNC-CS Technical Report TR94-019 (1994)Google Scholar