BBSC 303 Lecture / Workshop

Theme for the session: learning to relax ... and solve the problem.

Tactic: when an error message or dialogue pops up: READ IT and GOOGLE IT.

Specific example issue:

Export reliably to LightStudio:

Unfortunately, the Radiance renderer underlying 3DS Max cannot work with the object names that ArchiCAD or Revit are able to create. The work around is to Export to AutoCAD .dwg format. THEN in 3DS Max (9 if you are using Light Studio) using the AutoiCAD Legacy File Import format. This works for most people.

Those who have other issues often find it is due to some other fault with the way the CAD model is organised. One example we examined was the "set overflow in addobject"  error message: arising from objects being too close together. This can often be a result of the model having two objects that are co-planar (e.g. two identical copies of the same object).

A further strategy to be explored - particularly if your Revit model has "massing" elements in it - is to select to export ACIS solids rather than polyface meshes...

Use Max efficiently:

NOTES:

Many people are looking to use various combinations of lights (sun+sky) and cameras to create their renders. Rather than save many different Max files each with its own sky (and camera) - the option can be used for switching light sources on and off; and the option can be used to save 'scene states'. This approach permits the use of the option to set up a single job that runs (perhaps overnight?) to render all pictures (scenes) ina list.

has a "Multithread" option for using all the cores of a multi-core processor.

Select a bunch of objects and type a name into the Selection Set box in the tool bar - tis saves this selection set under this name.

The geometry file can be made much more efficient if you have multiple copies of objects such as chairs, light fittings, decorative facade elements, then making them into an array in the original CAD program, or in Max, ensring that all copies are 'instances' not real copies.

Render in mental ray and in Light Studio from the local D:\drive - it is 5 to 10 times faster than via the network to your 'My Documents' location. (Don't forget to keep the D:\ drive files and transfer then to the next computer's D:\ drive.