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In FME what is the diffrence betweencomposite-surfaceandmulti-surface?As far as I can tell when reading the description they do pretty much the same thing.How do they diffrientiate and why would I use one rather then another?
Hi@hadhafang,in my understanding,those two geometry types are different in not only internal data structure (IFMECompositeSurface and IFMEMultiSurface) also the object to represent conceptually.That is,a composite surface is a geometry that represents a continuous surface of a single object,a multi-surface is an aggregate that represents surfaces (regardless of whether those are continuous or not) of one or more objects.
Hi@hadhafang,
Adding onto takashi's wonderful answer,composite surfaces also have consistent front / back directions on faces ('continuous surfaces'),which could be important for adding on textures.
Check outthis webinarat about 4:00 mins to hear Dave explain the differences.Here are some more quick links to read a bit more on the topics:IFMECompositeSurface,andIFMEMultiSurface.
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