Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Hi Jamie and Yair,
Another approach can be to subtract the hole from the base surface by adding the coordinates of the hole in the opposite direction from the Vertex Entry Direction specified in the GlobalGeometryRules object. For example if the Vertex Entry Direction is Counterclockwise than the hole coordinates direction has to be Clockwise. However, the outer ring has to be connected to the inner ring somewhere (red line in the chart bellow). The surface with hole presented in the chart, in order to be recognized by E+, should have the following coordinates:
(0,0,Z),(4,0,Z),(4,3,Z),(0,3,Z),(0,0,Z),(1,1,Z),(1,2,Z),(3,2,Z),(3,1,Z),(1,1,Z)
This can get a bit more complex if there is more than one hole. In that case there have to be more than one connection between the inner ring and the outer ring. I found the most suitable place to connect inner ring with outer ring to be the shortest distance between coordinates of these two rings as shown in the second figure.
