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Re: [EnergyPlus_Support] Surface Vertices

Oh yippie, Yahoo's slow again.  I probably just double-answered 
several posts.  Oh well.  Maybe we need to BCC again.

On 9 Oct 2002, at 10:04, Linda Lawrie wrote:

> At 01:33 AM 10/9/2002, alexander.beisteiner@xxxxxxxxxxxxxxxxxx wrote:
> >Dear Sir/Madam >Following the convention in the object
> SurfaceGeometry from which side >have the surfaces to be faced- inside
> or outside? >Further, what about floor and ceiling?
> Page 81 of the IOReference States (Vertex Entry):
> Field: VertexEntry
> Surfaces are always specified as being viewed from the outside of the
> zone to which they belong.  (Shading surfaces are specified slightly
> differently and are discussed under the particular types).  EnergyPlus
> needs to know whether the surfaces are being specified in
> counterclockwise or clockwise order (from the
> SurfaceStartingPosition).  EnergyPlus uses this to determine the
> outward facing normal for the surface (which is the facing angle of
> the surface  very important in shading and shadowing calculations.
> Surfaces are always specified from the "outside" of the surface.
> Linda
> EnergyPlus WebSite: http://www.energyplus.gov
> Owner: EnergyPlus_Support list
> Member: EnergyPlus Development Team

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