The Priority Tree, a HL/HSR Approach for PHIGS
| dc.contributor.author | Abi-Ezzi, S.S. | en_US |
| dc.date.accessioned | 2014-10-16T14:34:18Z | |
| dc.date.available | 2014-10-16T14:34:18Z | |
| dc.date.issued | 1986 | en_US |
| dc.description.abstract | The Programmer-s Hierarchical Interactive Grahics System (PHIGS) specifies an interface for programming device-independent computer graphics applications. PHIGS provides a powerful data grouping mechanism, called the PHIGS structure, that may be used to model the geometry of 3D objects. Hidden Line/Hidden Surface Removal (HL/HSR) is a required process to produce realistic solid views of the modeled objects. Modeling clip is an essential process for viewing a clipped portion of the modeled objects. A technique is presented that provides HL/HSR and modeling clip as added utilities to PHIGS. The technique is based on the Binary Space Partitioning (BSP) tree (sometimes called priority tree), and involves a back to front sorting of the primitives of a PHIGS structure network to another PHIGS structure. Modeling clip is achieved by limiting the sorting to those primitives in a specified clip ping region of the object space. The resulting structure when displayed on a raster device produces a realistic view of the possibly clipped object that was originally modeled by the PHIGS structure network. | en_US |
| dc.description.number | 4 | en_US |
| dc.description.seriesinformation | Computer Graphics Forum | en_US |
| dc.description.volume | 5 | en_US |
| dc.identifier.doi | 10.1111/j.1467-8659.1986.tb00314.x | en_US |
| dc.identifier.issn | 1467-8659 | en_US |
| dc.identifier.pages | 283-289 | en_US |
| dc.identifier.uri | https://doi.org/10.1111/j.1467-8659.1986.tb00314.x | en_US |
| dc.publisher | Blackwell Publishing Ltd and the Eurographics Association | en_US |
| dc.title | The Priority Tree, a HL/HSR Approach for PHIGS | en_US |