PHIGS
PHIGS (Programmer's Hierarchical Interactive Graphics System) is the ISO standard (ISO / IEC 9592) for 3D computer graphics that was adopted in 1988.
PHIGS defines an application programming interface with which the hierarchical structure of the 3D scene to be displayed is described. In this respect it is an example of a scene graph API. PHIGS supports, among other things, points, lines with different line thicknesses and filled polygons, any affine transformations, perspective display of text and user-defined clipping levels.
PHIGS does not contain any functionality for illuminating graphic objects. Therefore, the successor PHIGS + was standardized in 1992, which also integrated the Phong lighting model. Furthermore, more complex graphic primitives such as NURBS can be used with PHIGS + .
PHIGS lost its importance with the spread of OpenGL and is no longer used for new developments.
Individual evidence
- ↑ ISO / IEC 9592-1: Programmer's Hierarchical Interactive Graphics System (PHIGS) . 1997 ( online [accessed November 2, 2007]).