shucks - borked formatting
On Feb 25, 6:10 pm, urbansurgery <[email protected]> wrote: > <b>The backstory</b> > Back in the mists of time (circa 2005) we achieved a planning > permission for a large masterplan project in a European capital (lets > call it Donlon). Part of the Urban Design guidelines was a design > parameter for the public realm that public spaces between buildings > would be guaranteed visible sky for a given percentage of the street > or square as a proportion of the linear length. This parameter was for > 40degree 2D splay oriented at a normal to the world in the centre of > the space at a given point with its vertex at ground level. To ensure > the possibility of a variable skyline (no enforced rigid setbacks) the > splay was allowed to wobble - again this parameter varies by space > dependant on character and North-South / East-West orientation. > > <b>The problem</b> > Sounds good, but how do you manage this with a massive scheme where > some buildings are already designed, some are emerging and some wont > be looked at for years. Either you have have some poor bugger drawing > infinite sections and running options everytime something changes or > you automate the calculation somehow. > > <b>Step forward Grasshopper</b> > Admittedly this could have been a purely scripted solution, but given > that i have learned grasshopper prior to learning how to use Rhino its > be learn as you go. Besides Grasshopper is a joy to use. The file <img > src="http://grasshopper3d.googlegroups.com/web/ > UrbanDaylightAnalysis.png" /> is the result. > > all in its the most complicated ratio calculation I have had to > construct in a while but it made a change from vba for excel > > <img src="http://grasshopper3d.googlegroups.com/web/ > parametric_daylight_splays1.gif" /> > <img src="http://grasshopper3d.googlegroups.com/web/ > parametric_daylight_splays2.gif" /> > <img src="http://grasshopper3d.googlegroups.com/web/ > parametric_daylight_splays3.gif" /> > <img src="http://grasshopper3d.googlegroups.com/web/ > parametric_daylight_splays4.gif" /> > <img src="http://grasshopper3d.googlegroups.com/web/ > parametric_daylight_splays5.gif" /> > <img src="http://grasshopper3d.googlegroups.com/web/ > parametric_daylight_splays6.gif" />
