[Edu-sig] Python Spirograph

[Phil Wagner]

Wrote this code after I was inspired by this webpage
http://www.math.com/students/wonders/spirographs.html. Had some initial
difficulties with memory but I discovered Psyco while reading "Dreaming in
Code" (recommended by this community). It can speed up your code and really
helped out with the rapid calculations and drawing for this program.
http://www.voidspace.org.uk/python/modules.shtml#psyco.

If you are running this code on a desktop you may or may not need it. If the
GUI runs slow or not at all then choose the command line. Also if anyone
knows how to optimize this code please let me know because it has me
scratching my head. Most of my research said to just chalk this up to the
pros and cons of Python vs C.

Thanks for all the inspiration this community gives me. You all challenge me
to push myself everyday.

Phil

#Spirograph Maker inspired by
http://www.math.com/students/wonders/spirographs.html

from visual import *
from visual.controls import *
from string import *

iterations = input('How many iterations?')

class spiro():
    def __init__(self,iterations):
        self.R = 65.0 #Radius of Fixed Circle
        self.r = 43.0 #Radius of Moving Circle
        self.o = 75.0 #offset of pen point in moving circle
        self.iterations = iterations
        self.t = arange(0,self.iterations,1)
        self.drawing = curve(x = ((self.R+self.r)*cos(self.t) -
(self.r+self.o)*cos(((self.R+self.r)/self.r)*self.t)), y =
((self.R+self.r)*sin(self.t) -
(self.r+self.o)*sin(((self.R+self.r)/self.r)*self.t)), color = color.green)
    def fixedRadius(self,fRadius):
        if GUIquestion == 1:
            self.R = fRadius.value
        else:
            self.R = fRadius
        self.redraw()
    def rollingRadius(self,rRadius):
        if GUIquestion == 1:
            self.r = rRadius.value
        else:
            self.r = rRadius
        self.redraw()
    def penOffset(self,pOffset):
        if GUIquestion == 1:
            self.o = pOffset.value
        else:
            self.o = pOffset
        self.redraw()
    def redraw(self):
        self.drawing.x = ((self.R+self.r)*cos(self.t) -
(self.r+self.o)*cos(((self.R+self.r)/self.r)*self.t))
        self.drawing.y = ((self.R+self.r)*sin(self.t) -
(self.r+self.o)*sin(((self.R+self.r)/self.r)*self.t))

class GUI():
    def __init__(self):
        self.c = controls(x=0,y=0,width=400, height = 400, range=100)
        self.s1 = slider(pos=(0,40),width=7, length=40,
axis=(1,0,0),min=1,max=100,action=lambda:
                         Spirograph.fixedRadius(self.s1))
        self.s2 = slider(pos=(0,0),width=7, length=40,
axis=(1,0,0),min=1,max=100,action=lambda:
                         Spirograph.rollingRadius(self.s2))
        self.s3 = slider(pos=(0,-40),width=7, length=40,
axis=(1,0,0),min=1,max=100,action=lambda:
                         Spirograph.penOffset(self.s3))
        self.fixedRadiusLabel = label(pos=self.s1.pos, display =
self.c.display, text='Fixed Radius', line = 0,
                                 xoffset=0, yoffset=20, height=10, border=0)
        self.rollingRadiusLabel = label(pos=self.s2.pos, display =
self.c.display, text='Rolling Radius', line = 0,
                                   xoffset=0, yoffset=20, height=10,
border=0)
        self.penOffsetLabel = label(pos=self.s3.pos, display =
self.c.display, text='Pre-Offset', line = 0,
                               xoffset=0, yoffset=20, height=10, border=0)
        self.scene1 = display(title = 'Spirograph!', x=410, y=0, width=400,
height = 400)
        self.scene1.select()

memload = 0
memquestion = 0
GUIquestion = 0

while(memquestion == 0):
    memload = upper(raw_input('(H)igh Memory GUI or (L)ow Memory Command
Line:'))
    if memload == 'H':
        memquestion = 1
        GUIquestion = 1
        psycoquestion = upper(raw_input('Do you have Psyco (the memory
accelerator installed)? Yes or No:'))
        if (psycoquestion == 'Y') or (psycoquestion == 'YES'):
            import psyco
            psyco.full()
        WYSIWYG = GUI()
        Spirograph = spiro(iterations)
        qbutton = 0
        while(qbutton == 0):
            WYSIWYG.c.interact()
    if memload == 'L':
        Spirograph = spiro(iterations)
        command = ''
        while(command !='Q'):
            print('Adjust which factor of the spirograph?')
            print('Fixed Radius =',Spirograph.R, ' Moving
Radius=',Spirograph.r, ' Offset of Pen=', Spirograph.o)
            command = upper(raw_input('(F)ixed Radius, (M)oving Radius,
(O)ffset of the Pen, (Q)uit?'))
            if command == 'I':
                value = input('What is the new value?')
                Spirograph.numIterations(value)
            if command == 'F':
                value = input('What is the new value?')
                Spirograph.fixedRadius(value)
            if command == 'M':
                value = input('What is the new value?')
                Spirograph.rollingRadius(value)
            if command == 'O':
                value = input('What is the new value?')
                Spirograph.penOffset(value)


-- 
http://www.google.com/profiles/philhwagner
http://staff.hthcv.hightechhigh.org/~pwagner/ (My Digital Portfolio)
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