Monday, April 19, 2010

Burmese Pagodas, Curtain Panels and Reporting Parameters

One of the perks of being based in Asia is that the travel opportunities are phenomenal.  A Burmese friend invited me to join him for a trip to visit his family in Myanmar.  Of course, I accepted and we spent a few days in Yangon and Mandalay.  At the end of the trip, he took me to a place called Bagan where there is a countless number of 1,000 year old brick pagodas like these:



















As i spent the day in a horse drawn buggy, trotting across the desert looking at these forms, I started to wonder how to generate them in Revit.  I took particular interest in the textures and rings of the spires:




































After trying a couple of different methods, it ended up being a really neat experiment in the use of curtain panels and the reporting parameters feature in 2011.

So here we go....

First thing i did was set up a pair of 3-point curves which i would use to set-up my elevation profiles.  By attaching parameters to the driving reference points, i could refine the shape later:

































Each horizontal line represents a horzontal division of the model.  I will use this to get the stepped effect later on but first i had to place reference points at every intersection.  I simply placed the points on my curve and then pressed the HOST POINT BY INTERSECTION button.  I selected the line i wanted to link for the intersection and it worked like a charm.



Now that point will ALWAYS be where the line and curve intersect....And I can now put a reporting parameter to it that will come in handy later:
Next i had to make my curtain panels using the Panel Pattern Templates.  First i made a slab and a disc mass family:


Then nested these in to an OMNI GRID 2x2 Panel Pattern:

 
 

The 'Panel_HT' Paramenter is actually a reporting parameter that will be used to control the height of each Pattern Panel in the final model.  This is the Patterns after the nested parameters have been linked:












With this accomplished, I go back to my profile model and set up a pair of surfaces to divide and apply my pattern:
Now i go through and pick each panel individually and link its width to the reporting parameters i set up along the curve earlier in the exercise.  The end result looks like this:



Several of my Hindu and Buddhist colleagues got a real kick out of seeing this model on my computer screen as the work progressed.  They all had a deep religious connection to forms like this.

At the end of the exercise i noticed something very interesting as well, By burrowing down into my selection, I could actually divide the surfaces that made up the individual slabs....This would allow me to apply further textures and ornament to each individual panel element....This is a rabbit hole that goes down pretty far!

Model for Download:
More pictures from Burma:

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