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problems to improve the deficirncies of igeswithin the framework of this interface an attempt was to be made to improve the deficiencies of iges set
cadi interfacethe cadi interface was developed within the framework of the esprit project 322 of the european commission the project was started in
verband der automobilindustries flachenschnittstelle vdafsthis interface was developed by the association of the german automobile industry for the
different types of information units of cadthere are different types of information units defined they are class 0the geometric primitives needed for
standard for exchange and transfer setthe interface set is a standard for the exchange of all data which is generated for cadcam it is a french
a special feature of the pdesa special feature of the pdes development is the use of the formal language express for modeling the product information
what is the aim of pdesthe aim of pdes is to provide an interface which permits the exchange of data of the entire product development cycle and
state the product data exchange specificationsin may 1984 a late night meeting of the iges organization edit committee was heldthe outcome the boeing
drivers for a common international standardthe drivers for a common international standard included global commerce and data exchange increasingly
product data exchange specifications pdesby 1984 many of these international efforts had produced enough results to be compared and an international
illustrate the specification of pddii the 3-d geometry of the product which is defined by a set of curves surfaces and volumesii the topology
when was pddi developedthe pddi interface was developed in connection with the icam project which was funded by the air force in order to improve the
what is conformance testingconformance testing there was no mechanism for testing processors or resolving errors between two
what is subsettingsubsetting vendors selected and implemented only portions of the whole of iges thus making exchange between two systems impossible
upward compatibilityof igesupward compatibility the need for generations of processors to parse files compliant with earlier versions of iges
determine the loss of information during exchange in igesloss of information during exchange information would inevitably be lost when information
determine the processing time of igesfile sizeprocessing time iges was heavily criticized for requiring large files that took hours or even days to
define flavorings in igesflavorings iges contained several ways to capture the same information which made proper interpretation largely dependent
product definition data interface pddiiges provided a very practical first solution for cad data exchange complete with an exchange file format it
illustrate about the three authors of igesin 1977 the three authors of the initial graphics exchange specification were recognized collectively for
normal 0 false false false en-in x-none x-none microsoftinternetexplorer4
illustrate the gks systemthe user communicates with the graphic system via his program the gks system is embedded in the user program by an
requirements for standard interface the interface must be capable of handling all kinds of manufacturing data there should be no information
how can we transfer data among cad systemthe three main reasons for transferring data among cad systems or cae systems or agents etc are i to
creating 3-d solid modelstwo basic approaches to create solid models are i constructive solid geometry csg or c-rep andii