#AU2012 #UKBimCrew AB2410 – Echo Chamber: Complex Parametric Arrays in Autodesk® Revit®

Andreas Dieckerman and Zachary Kron (they dealt well with hardware challenges which meant to session had to start a little late)

who we are and what we know – Who has worked with divided paths, patterning, point orientation, repeating components and adaptive components and dived and repeat.

Dumb repetition vs smart repetition. Numbers vs Mass customisation and data mining

Reporting parameters, divided surface and repeating components.

the Human factor, laziness and pain threshold. hand laid bricks vs quad copters. Working more quickly and in an interesting way.

[Live Demo of a circle based on a point with a reporting parameter in an adaptive component hosted on a divided surface] Components responding to their context.

two worlds in revit, traditional family editor and form element based family. They share a common data of parameters.

railings vs divide for instance.

Abstract geometric features using form element based family.


Point collection, Place Holder, Reactor and Increment.

Context awareness : Use Reporting Parameters, must be strong.

Divide and repeat gives you speed and control.

Multiple surface repeat and divide is a CPU killer and advised to “not do this at home”. With humour of course.

Linear Reactor. Planning the building is important. Linear extrusions with reactions. Repeat on multiple paths. Measuring the deviations between lines at nodes. This dictates the behaviour.

Values between 0 and 1 give you percentage deviation through the division of two values.

For every node an integer value can be generated by dividing the overall length by the element length. This can be used to liberate the component from the grid, “non equal panels”

Corner wrapping (see handout) due to time moved on to Mapping.

Spherical inversion mathematical method. http://en.wikipedia.org/wiki/Inversive_geometry

Start, target and resultant surfaces using adaptive components and divide and repeat. Repetition can be used as a form exploration if we do some things that are quite unexpected.

There is an opportunity to work smarter using these tools for more regular tasks rather than getting RSI.

You can “teach” the patterns how to repeat by placing multiple instances of the component. It is brutally logical but it opens up design options and when you start using it “your brain starts to change”.


If you make a surface planar and then non planar by distortion the coordinate mapping gets rotated by 90 degrees. So make it non planar first and then connect.

Category naming of adaptive components reared its head with it possibly being too limited.

Everything else is in the excellent handouts:




About Shaun Farrell

I have been involved in the construction sector since 1986 and over the years I have seen things change dramatically. Much of the change has been directly as a result of technology. This blog will be about the key combinations of People, Process and Technology. Any views expressed here are strictly my own.
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