#HourofCode Intro to Python Scripting in Rhino3d

Course or Collection:

Tutorial

Software:

Python / Rhino

Tag:

#HourofCode / Scripting

Video Duration:

1 hour and 33 minutes

Author:

Zach Downey

This tutorial was recorded from my CUNY Introduction to Computation and Fabrication class. We recorded this session for the nationwide #HourofCode Computer Science Education Week. It's basically a live demo of the first 6 or so Designalyze Python videos. This was the first time most of my students have experienced pure programming that wasn't through Grasshopper. I use a couple of Grasshopper anaologies to help explain how some of the python functions work. Hopefully, this video helps contribute to the #HourofCode initiative and even more than that, hopefully you learn or are at least inspired to begin programming. Enjoy and happy coding.

#Source Code for the Examples can be found in each of the first six Designalyze tutorials.

#Python Data Types
#Use Rhino's Script Debugger to View the Data Types
 
import rhinoscriptsyntax as rs
 
#Commets # character is use to comment out lines
 
#Special Data Type
x = None
 
#Number Data Types
x = 0
x = 1
x = -1
x = 1.0
x = 3.14
x = 3.14j
 
#Booleans
x = True
x = False
 
#Sequence Data Types
x = "Helo World"
x = 'Hello World'
x = ['h', 'e', 'l', 'l', 'o']
x = [1,2,3,4,5]
x = [1,"2",'3',"Strings"]
x = (1,2,3)
 
#Mapping Data Type
x = {0:'w', 1:'o', 2:'r', 3:'l', 4:'d'}
 
 
x = None

#Arrays/Lists
import rhinoscriptsyntax as rs
 
arrPt1 = [1,3,9]
arrPt2 = [4,5,6]
arrPt3 = [-1,-2,-3]
arrPt4 = [7,8,9]
 
rs.AddPoint(arrPt1)
rs.AddPoint(arrPt2)
rs.AddPoint(arrPt3)
rs.AddPoint(arrPt4)
 
points = []
points.append(arrPt1)
points.append(arrPt2)
points.append(arrPt3)
points.append(arrPt4)
 
print (points)
 
print (points[1])
 
rs.AddPolyline(points)

#For Loop to Create Points
#For Loop using the range and frange functions
 
import rhinoscriptsyntax as rs
import math
 
#Simple Count
for i in range(0,50):
    print(i)
 
#Count by Even Numbers
for i in range(0, 50, 2):
    print(i)
 
#Count by Odd Numbers
for i in range(1,50,2):
    print(i)
 
#Using Rhinoscript's frange to step with floats
for d in rs.frange(0.0, 10.0, 0.1):
    print(d)
 
for d in rs.frange(0.0, 10.0, 0.1):
    rs.AddPoint(d,0,0)
 
points = []
 
for d in rs.frange(0.0, 10.0, 0.1):
    x = d*math.sin(d)
    y = d*math.cos(d)
    z = 0.0
    rs.AddPoint(x,y,z)
    pt = (x,y,z)
    points.append(pt)
 
curve = rs.AddCurve(points)

#Nested For Loops
#color points
import rhinoscriptsyntax as rs
 
 
def createColoredPoint(x,y,z,r,g,b):
    currentColor = [r,g,b]
    pt = rs.AddPoint(x,y,z)
    rs.ObjectColor(pt, currentColor)
 
 
rs.EnableRedraw(False)
step = 10
 
for x in range(0,256, step):
    for y in range(0,256, step):
        for z in range(0,256,step):
            createColoredPoint(x,y,z,x,y,z)
rs.Redraw()

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