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| | [[workshop01G3:References|'''References''']]</div> | | [[workshop01G3:References|'''References''']]</div> |
| | </div><br> | | </div><br> |
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| − | import rhinoscriptsyntax as rs
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| − | import random
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| − | import scriptcontext
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| − | # define a function called drawbranch
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| − | # the integer c in the function with a format drawbranch(a,b,c), actually, drawbranch(4,line,4)
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| − | # m is a parameter to avoid having to manually change
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| − | def drawbranch(x,line,m):
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| − | #introduce possibility to use 'escape' key to avoid computer crash
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| − | scriptcontext.escape_test()
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| − | #define a condition to exit from funtion drawbranch, essentially increasing the i
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| − | if x==0:
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| − | return
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| − | else:
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| − | for i in range (0,m):
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| − | # get start and end points of a starting curve, first curve that will be drawn
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| − | endpt=rs.CurveEndPoint(line)
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| − | srtpt=rs.CurveStartPoint(line)
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| − | #create a vector between the endpoint and the startpoint of the initial curve
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| − | vect=rs.VectorCreate(endpt,srtpt)
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| − | #get 3 random integer which will be used as a degree of rotation for the initial curve,these vectors will draw the branch
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| − | rnd=random.randint(-35,35)
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| − | rnd1=random.randint(-15,15)
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| − | rnd2=random.randint(-5,15)
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| − | #3D-rotate the vector with values got from random
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| − | vect=rs.VectorRotate(vect,rnd,[rnd1,rnd2,1])
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| − | #add a point at the end of the 3D vector
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| − | ptadd=rs.PointAdd (endpt,vect)
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| − | #add a line between the endPoint of the vector and the newly added point
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| − | line=rs.AddLine (endpt,ptadd)
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| − | #INSIDE THE FOR-LOOP, WRITE A CONDITION FOR ADDING POINTS, BUT ONLY AT THE END OF THE LAST BRANCH
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| − | #IF YOU PROVIDE A LOW NUMBER OF ITERATIONS, IT WILL BECOME RECOGNISEABLE THAT THE CONDITION FOR DRAWING THE LAST BRANCH OF EVERY ITERATION
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| − | #IS WHEN X==1 AND I==THE END OF THE PROVIDED RANGE(m)-1
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| − | if x==1 and i==m-1:
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| − | #if condition is met, add points at the end of the branch
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| − | e=rs.AddPoint(ptadd)
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| − | endPoints.append(e)
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| − | #calling the function THIS IS WHEN THE ACTUAL BRANCH IS DRAWN
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| − | drawbranch(x-1,line,m)
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| − | #make a list to store endPoints
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| − | endPoints=[]
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| − | #provide starting line for the future tree
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| − | line=rs.AddLine([0,0,0],[0,0,20])
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| − | #calling the function for the chosen values
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| − | drawbranch(4,line,3)
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| − | #icluding a random seed for variation
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| − | rndseed=random.seed(5)
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| − | #adding a layer endPoints
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| − | rs.AddLayer("endPoints")
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| − | #adding PolyLine between points in endPoints
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| − | for pt in endPoints:
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| − | rs.ObjectLayer(pt,"endPoints")
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| − | rs.AddPolyline(endPoints, None)
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