Hi, Linda
Your suggestion works with IDF without rotation of the North axis.
Shading:Site, Shading:Building
These objects are used to describe rectangular shading elements that are external to the
building. Examples are trees, high fences, near-by hills, and neighboring buildings.
If relative coordinates are used (ref: Field: Coordinate System in GlobalGeometryRules),
shading surfaces entered with Shading:Site remain stationary if the building is rotated,
whereas those entered with Shading:Building rotate with the building. If world coordinates are
used Shading:Site and Shading:Building are equivalent.
The above is from the IO manual.
The example used the Shading:Site for bushes, and therefore it must not be rotated, unless the bushes are entered with Shading:Site:Detailed format for the vertices.
Dr. Li
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> From: linda@xxxxxxxxxxxxxx
> Date: Tue, 2 Nov 2010 08:01:18 -0600
> Subject: Re: [EnergyPlus_Support] Re: bothering question @
> 4ZoneWithShading_Simple_1.idf
>
>
>
>
>
>
> It's been a while since I made this sample file.
>
> The rectangular surfaces default to being relative to zone origin, as
you
> can see from the .eio file:
>
> ! <SurfaceGeometry>,Starting Corner,Vertex Input Direction,Coordinate
> System,Daylight Reference Point Coordinate System,Rectangular (Simple)
> Surface Coordinate System
> Surface
>
Geometry,UpperLeftCorner,Counterclockwise,WorldCoordinateSystem,RelativeCoordinateSystem,RelativeToZoneOrigin
>
> I will make the SurfaceGeomtry object so it is explicit to alleviate
> confusion.
>
> At 12:11 AM 11/2/2010, leebye2008 wrote:
>
> If the oringin of zone 1 is changed to 0,0,0, it will overlap the
bushes
> that origines from 1,0,0.
> Anyway ,the result and the surface details seems very different.
> In fact every point of the building is defined relatively in that
case.But
> the coordinate system is world, and it is still a right shaped building.
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