Geomatic: A 3-D Graphic Relief Simulation System
A general command system for the simulation and display of 3-D views of relief maps is presented. This sytem is implemented on an Evans and Sutherland MPS connected to a VAX 11/780. This (3-D) Geomatic Graphic Relief Simulation System can be adapted and inserted as a software tool in a wide range of treatments (creating cartographic documents, optimizing an entity implant on a relief map with multiple constraints,…); it also provides the user with an opportunity for genuine interaction with the system in the choice and display of representations.
The 3-D Geomatic Graphic Relief Simulation System provides the user with an array of creation procedures which let the user obtain and display different realistic depictions of the relief of a terrain. These different realistic displays constitute, in practice, the basic tool for qualitative and dynamic use of a geographic data base, because the other entities (vegetation, hydrography,…) are supported by the relief. The system is interactive; it lets the user define a call sequence from a menu. A taskscheduler precompiles the call sequence and establishes the correspondence between the menu and the sequence of operations for which he controls the execution.
KeywordsDigital Terrain Model Call Sequence Command Language Current Color Distributor Code
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