Grasshopper Scripts: Space Syntax 2.0
Sep, 2018
This is an idea I came up after I saw the work from spacesyntax.com. By creating a grid system, using graph theory, and counting frequencies, I found it is possible to use Grasshopper to conduct similar visibility and accessibility analysis like what space syntax.com did. The scripts I developed here will help define circulation hierarchies and visual foci. They could also be extended to many design scenarios for streetscapes, plazas, urban parks, gardens, transit-oriented development, etc.
import itertools
import rhinoscriptsyntax as rs
#print (list(itertools.combinations(ptsGrid,2)))
def checkViews(a):
##tooFar/tooClose mean toofar/tooClose to look
if rs.CurveLength(a)<tooFar and rs.CurveLength(a)>tooClose:
##check barrier
for i in barriers:
if rs.CurveCurveIntersection(a,i):
return None
return a
else:
return None
ptsAll=ptInside + ptOutside
ptsTest=ptInside[2]
def checkPts(ptsTest):
viewLns=[]
for i in ptsAll:
a=rs.AddLine(ptsTest,i)
viewLns.append(checkViews(a))##check the curve length
viewLns=[x for x in viewLns if x is not None]
return viewLns
a=checkPts(ptsTest)
viewExposure=[]
views=[]
for i in ptInside:
checkPtsi=checkPts(i)
viewExposure.append(len(checkPtsi))
views=views+checkPtsi
viewsheds=views
result=viewExposure