William Su's Page

"check dis one..make sure u make a planar mesh and some anchor points"

"http://groups.google.co.uk/group/kangaroophysics/browse_thread/thread/9b345d56cecee6d9# Daniel Piker posted an example for catenary sructures somewhere in that section. Good luck."

"you can supply the program with an obj model of the leaves/vegetation and it will copy/rotate them into position"

"Pretty cool! I guess it does the leaves somehow and then texture maps them? It's kind of like paint effects in Maya..."

"there is a great script/ program that i used in maya and the source is available. http://graphics.uni-konstanz.de/~luft/ivy_generator/ it will create realistic vine growth. take a look at the source. the main part of the program is in the ivy.cpp…"

"One workflow idea: _Start with randomly oriented (but mostly vertical) lines along your surface _Extract points along each line at a regular (or maybe random...) intervals _Jog (jitter) each point along surface (in plane) in the horizontal…"

"For a uniform surfaces stress it gives the stable equilibrium shape. I.e I u design a tensile surface to a geometry that is not in equilibrium it will move when u install it causing wrinkles etc. The surface geometry has to be found not dictated.…"

"DR was originally devised by alistar day of arup way back in the late 60s. It was further developed by mike barnes of happold later bath uni. David wakefield has since been pioneering the development of DR in such fields as air ship design. I once…"

"You could create strips of paper that would roll up onto tapered cylinders, then attach them at linearly increasing angles. You'd get a flat approximation of the actual tube of course, so depending on your desired surface quality, this may not…"

"Thanks for the description and clarification - very interesting and helpful. I think I see what you mean now about the ease of identifying peaks - just check if KE has increased since the last time step and if not then zero all velocities, right…"

"Right, and I left out a few other necessary bits in my description, but I think it is a good overview of what the little black box actually does. From what I understand kinetic damping is used as an add on to viscous damping to speed up convergence,…"

"Thanks for sharing that paper Ben. Am I right in thinking your description above is just for viscous damping, not for what the paper calls kinetic damping ? (figure from Sigrid's paper illustrating Kinetic Damping) I've been interested…"

"I had issue posting the .pdf so here is Sigrid's dissertation excerpt"