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#!/usr/bin/env python
"""
DrawBot.py
This a a demo of how one can use the FloatCanvas to do a drawing similar to one of the "DrawBot" demos:
http://just.letterror.com/ltrwiki/DrawBot
I think it's easier with FloatCavnas, and you get zoomign and scrolling to boot!
"""
import wx
from math import *
try: # see if there is a local FloatCanvas to use
import sys
sys.path.append("../")
from floatcanvas import NavCanvas, FloatCanvas
print("Using local FloatCanvas")
except ImportError: # Use the wxPython lib one
from wx.lib.floatcanvas import NavCanvas, FloatCanvas
print("Using installed FloatCanvas")
class DrawFrame(wx.Frame):
"""
A frame used for the FloatCanvas Demo
"""
def __init__(self,parent, id,title,position,size):
wx.Frame.__init__(self,parent, id,title,position, size)
# Add the Canvas
self.Canvas = NavCanvas.NavCanvas(self,-1,(500,500),
ProjectionFun = None,
Debug = 0,
BackgroundColor = "White",
).Canvas
self.Show(True)
self.MakePic()
return None
def MakePic(self):
Canvas = self.Canvas
phi = (sqrt(5) + 1)/2 - 1
oradius = 10.0
for i in xrange(720):
radius = 1.5 * oradius * sin(i * pi/720)
Color = (255*(i / 720.), 255*( i / 720.), 255 * 0.25)
x = oradius + 0.25*i*cos(phi*i*2*pi)
y = oradius + 0.25*i*sin(phi*i*2*pi)
Canvas.AddCircle((x,y),
radius,
LineColor = "Black",
LineWidth = 2,
FillColor = Color,
)
self.Canvas.ZoomToBB()
app = wx.App()
DrawFrame(None, -1, "FloatCanvas Demo App", wx.DefaultPosition, (700,700) )
app.MainLoop()
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