other notation... where x, y and z are variables, and a,b,c... are constants but sliders, open for dynamic change. + Defining its interval.
- Another minor question; the intcrv box, it is by default a polynomial interpolation? In general, where can you get information on the underlying math behind the boxes?
- Is it possible to define the intervals on the sliders based on other sliders or inputs?
Many questions, but I have been trying to figure this out for quite some time now. I am truly grateful for all help on this matter! :) Maybe they will be of help to other engineers or architects out there...
…
ase to give the same result using a graph mapper with a parabola as in the attached file
Unfortunately it never gave the same result ..... is it a mistake in the book ?!…
m b1 As Brep = Nothing
If (heights(b) > heights(b+1)) Then
b0 = breps(b+1)
b1 = breps(b)
Else
b0 = breps(b)
b1 = breps(b+1)
End If
Dim bDiff As Brep() = Brep.CreateBooleanDifference(b0, b1, 0.1)
If (bDiff IsNot Nothing) AndAlso (bDiff.Length > 0) Then
breps(b) = bDiff(0)
End If
--
David Rutten
david@mcneel.com
Poprad, Slovakia…
Added by David Rutten at 7:32am on October 16, 2012
Chris,
Again the number of curves which SubCrv gives me is different from the actual curve on the surface! for example it gives me 80 curves in which there are 20 curves!
moved by random amounts in a random direction. The animated slider was the amount of deviation from the original points. And yes, I used culled lists.B.t.w. did you find my workaround for your loft? Did your notebook explode? ;)…
0.533000void brightfunc skyfunc2 skybright perezlum.cal010 1.382e+00 3.201e-01 1.066879 -0.754821 0.015485 -0.048998 -0.089403 0.066341 -0.860010 0.505947
The values in bold are then evaluated using the equations in the file perezlum.cal inside the RAYPATH directory in Radiance..
{ All-weather Angular Sky Luminance Distribution . Additional arguments required for calculation of skybright: A1 - diffus normalization A2 - ground brightness A3,A4,A5,A6,A7 - coefficients for the Perez model A8,A9,A10 - sun direction}skybright = wmean((Dz+1.01)^10, intersky, (Dz+1.01)^-10, A2 );wmean(a, x, b, y) = (a*x+b*y)/(a+b);intersky = if( (Dz-0.01), A1 * (1 + A3*Exp(A4/Dz) ) * ( 1 + A5*Exp(A6*gamma) + A7*cos(gamma)*cos(gamma) ), A1 * (1 + A3*Exp(A4/0.01) ) * ( 1 + A5*Exp(A6*gamma) + A7*cos(gamma)*cos(gamma) ) );
This data is then mapped to the "glow" material that represents the celestial hemisphere...You can edit the climate based sky produced by Honeybee and enter your own values. The other option would be to just use gendaylit from DOS Prompt.…