/IronPython_Main/Languages/IronPython/Samples/BadPaint/demo_snippets.py

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# This source code is subject to terms and conditions of the Apache License, Version 2.0. A 

# copy of the license can be found in the License.html file at the root of this distribution. If 

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# ironpy@microsoft.com. By using this source code in any fashion, you are agreeing to be bound 

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#------------------------------------------------------------------------------

#--INSERTS RANDOM SQUARES



from System.Windows.Controls import Canvas

from System.Windows.Shapes import *

from System.Windows.Media import *

from System import Random

rand = Random()



for i in xrange(100):

    rect = Rectangle(Width=20, Height=20, Fill=Brushes.Blue)

    Application.Painting.Children.Add(rect)

    Canvas.SetLeft(rect, rand.Next(Application.Painting.ActualWidth))

    Canvas.SetTop(rect, rand.Next(Application.Painting.ActualHeight))





#------------------------------------------------------------------------------

#--INSERT A CIRCLE CONSISTING OF SQUARES OF DIFFERENT COLORS



# setup circle

from System.Windows.Controls import Canvas

from System.Windows.Shapes import *

from System.Windows.Media import *

import math



dim = min(Application.Painting.ActualWidth - 20, Application.Painting.ActualHeight - 20)/2

for i, color in zip(xrange(0, 360, 10), dir(Brushes)):

    rect = Rectangle(Width=20, Height=20, Fill=getattr(Brushes, color))

    Application.Painting.Children.Add(rect)

    Canvas.SetTop(rect, dim * math.sin(i * math.pi*2/360) + dim)

    Canvas.SetLeft(rect, dim * math.cos(i * math.pi*2/360)+ dim)



#--IRONRUBY CODE TO SPIN THE CIRCLE ABOVE

# rotate

#Canvas = System::Windows::Controls::Canvas

#def callback

#    self.application.painting.children.each do |child|

#        top, left = Canvas.get_top(child), Canvas.get_left(child)

#        run = (left - dim) / dim

#        rise = (top - dim) / dim

#        angle = Math.atan2 rise, run

#        angle += Math::PI / 100

#        Canvas.set_top child, dim * Math.sin(angle) + dim

#        Canvas.set_left child, dim * Math.cos(angle)+ dim

#    end

#end