Option Explicit
'Author: YukiukiH
'Date: 08/10/03
'compatibility: Rhino4
''branching using vector
'first things first...
'----------------------------------------------------------------------------------------------
Dim strRtPts
strRtPts = Rhino.GetObjects ("select root points", 1)
Call Rhino.AddLayer ("ptCloudRT", RGB(0,0,0)) 'black
Call Rhino.ObjectLayer (strRtPts, "ptCloudRT")
Dim strALLREFPts
strALLREFPts = Rhino.GetObjects ("select reference points", 1)
Call Rhino.AddLayer ("ptCloudREF", RGB(105,105,105)) 'gray
Call Rhino.ObjectLayer (strALLREFPts, "ptCloudREF")
Dim dblNumber
dblNumber = 7 '4
Dim dblBoundary
dblBoundary = 100 '100
Call Rhino.Print ("minimize rhino window")
'call function
Dim arrResultBranchs
arrResultBranchs = branch (strRtPts, strALLREFPts, dblNumber, dblBoundary)
Dim arrResultTrees, i, j
For j = 0 To UBound(arrResultBranchs)
'call function
ReDim Preserve arrResultTrees(j)
arrResultTrees(j) = tree (20, arrResultBranchs(j))
Dim arrResult01, arrResult02, dblS, dblT
If dblNumber Mod 2 = 1 Then
dblS = dblNumber/2+0.5
dblT = dblNumber-dblS
Else
dblS = dblNumber/2
dblT = dblNumber/2
End If
ReDim arrResult01(dblS-1)
ReDim arrResult02(dblT-1)
Rhino.print("dblS = " & CStr(dblS))
Rhino.print("dblT = " & CStr(dblT))
For i = 0 To (dblS-1)
arrResult01(i) = arrResultTrees(j)(i)
Next
For i = 0 To (dblT-1)
arrResult02(i) = arrResultTrees(j)(i+dblS)
Next
'call function
Call tree (10, arrResult01)
Call tree (10, arrResult02)
Next
Call Rhino.print("execution completed")
'----------------------------------------------------------------------------------------------
'----------------------------------------------------------------------------------------------
Function branch (strRtPts, strALLREFPts, dblNumber, dblBoundary)
refer branch function
End Function
'----------------------------------------------------------------------------------------------
'----------------------------------------------------------------------------------------------
'----------------------------------------------------------------------------------------------
'----------------------------------------------------------------------------------------------
Function tree (dblStemLength, arrBranches)
Dim arrResult()
'length of given branches
'---------------------------------------
Dim i
Dim blnFlag
blnFlag = False
For i=0 To UBound(arrBranches)
Dim dblCurveLength
dblCurveLength = Rhino.CurveLength (arrBranches(i))
Call Rhino.print("length = "& CStr(dblCurveLength))
If dblCurveLength > dblStemLength Then
blnFlag = True
End If
Next
'get average if branches are too long,
'---------------------------------------
If blnFlag Then
Rhino.print("blnFlag = true")
Dim arrEdPt, arrStPt
Dim arrAvgPt(2), dblX, dblY, dblZ
dblX = 0
dblY = 0
dblZ = 0
For i = 0 To UBound(arrBranches)
arrEdPt = Rhino.CurveEndPoint (arrBranches(i))
dblX = dblX + arrEdPt(0)
dblY = dblY + arrEdPt(1)
dblZ = dblZ + arrEdPt(2)
Next
arrAvgPt(0) = dblX /(UBound(arrBranches)+1)
arrAvgPt(1) = dblY /(UBound(arrBranches)+1)
arrAvgPt(2) = dblZ /(UBound(arrBranches)+1)
arrStPt = Rhino.CurveStartPoint (arrBranches(0))
Dim arrDiff
arrDiff = Rhino.VectorSubtract (arrAvgPt, arrStPt)
Dim dblDiff
dblDiff = Rhino.VectorLength (arrDiff)
Dim k
k = dblStemLength / dblDiff
arrDiff = Rhino.VectorScale (arrDiff, k)
Dim arrSeed
arrSeed = Rhino.VectorAdd (arrStPt, arrDiff)
'shorter branches
'---------------------------------------
Dim strNewBranches
ReDim strNewBranches(UBound(arrBranches))
For i = 0 To UBound(arrBranches)
Dim arrLeaf
arrLeaf = Rhino.CurveEndPoint(arrBranches(i))
Dim strLine
strLine = Rhino.AddLine(arrSeed, arrLeaf)
ReDim Preserve arrResult(i)
arrResult(i) = strLine
Next
Dim strStem
strStem = Rhino.AddLine (arrStPt, arrSeed)
Call Rhino.DeleteObjects (arrBranches)
Else
Rhino.print("blnFlag = false")
End If
'---------------------------------------
Call Rhino.CurrentLayer ("0")
tree = arrResult
End Function
'----------------------------------------------------------------------------------------------
'----------------------------------------------------------------------------------------------
