[Pythoncard-cvs] PythonCard/samples/lsystem lsystemInteractive.py,NONE,1.1 lsystemInteractive.rsrc.py,NONE,1.1 readme.txt,1.3,1.4

[Kevin A. <ka...@us...>]

Update of /cvsroot/pythoncard/PythonCard/samples/lsystem
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv21941

Modified Files:
	readme.txt 
Added Files:
	lsystemInteractive.py lsystemInteractive.rsrc.py 
Log Message:
added lsystemInteractive which draws pattern anti-aliased


--- NEW FILE: lsystemInteractive.py ---
#!/usr/bin/python

"""
__version__ = "$Revision: 1.1 $"
__date__ = "$Date: 2004/05/18 17:20:31 $"
"""

from PythonCard import clipboard, dialog, graphic, model
from PythonCard.turtle import AbstractTurtle, BitmapTurtle
import wx
import os
import time
import lsystem

class LSystem(lsystem.LSystem):

    def on_initialize(self, event):
        self.filename = None
        #self.on_iterations_select(None)
        #self.on_angle_select(None)
        self.components.iterationDisplay.text = \
            str(self.components.iterations.value)
        self.components.angleDisplay.text = \
            str(self.components.angle.value)
        self.on_Render_command(None)
    
    # depending on the complexity of the pattern string
    # my system becomes pretty unresponsive above 6 or 7 iterations
    
    def on_iterations_select(self, event):
        self.components.iterationDisplay.text = \
            str(self.components.iterations.value)
        self.components.iterationDisplay.redraw()
        self.on_Render_command(None)
    
    def on_angle_select(self, event):
        self.components.angleDisplay.text = \
            str(self.components.angle.value)
        self.components.angleDisplay.redraw()
        self.on_Render_command(None)
    
    def on_angleDisplay_textUpdate(self, event):
        # how do we want to validate here
        # just use a try/except block?
        try:
            self.components.angle.value = \
                int(self.components.angleDisplay.text)
            self.on_Render_command(None)
        except:
            pass

##    # this seemed like a good idea, but you tend to press Render so it isn't needed
##    def on_scriptField_closeField(self, event):
##        self.on_Render_command(None)
                
    def on_Render_command(self, event):
        self.statusBar.text = "Drawing, please wait..."
        starttime = time.time()

        fractalString = self.expand(
                self.components.scriptField.text,
                self.components.iterations.value)
        borderWidth = 5.0 * 4
        angle = self.components.angle.value
        bounds = self.drawAbstractFractal(
            fractalString,
            'blue',
            1,
            angle,
            (0,0))
        width, height = self.components.bufOff.size
        scale = min(
            (width - 2 * borderWidth) / (bounds[2]-bounds[0]),
            (height - 2 * borderWidth) / (bounds[3]-bounds[1]))
        startPos = (bounds[0] * -scale + borderWidth,
                    bounds[1] * -scale + borderWidth) 
##        self.components.bufOff.autoRefresh = True
        self.components.bufOff.autoRefresh = False
        self.drawFractal(
            fractalString,
            'blue',
            scale,
            angle,
            startPos)

        # the bufOff BitmapCanvas should always be 4x the size
        # of the onscreen BitmapCanvas so we have a simple
        # method to anti-alias the drawing
        # also need to add some padding around side, so I
        # multiplied borderWidth * 4 above
        bmp = self.components.bufOff.getBitmap()
        self.components.onscreen.drawBitmapScaled(bmp, (0, 0), self.components.onscreen.size)
        # not sure if this is needed to prevent a memory leak
        bmp = None
        
        stoptime = time.time()
        self.statusBar.text = "Draw time: %.2f seconds" % (stoptime - starttime)

    def drawFractal(self, aFractalString, color, legLength, angle, startPos):
        self.components.bufOff.clear()
        t = BitmapTurtle(self.components.bufOff)
        t.color(color)
        t.width(3)
        #t.setBackColor('black')
        t.cls()
        t.lt(90)
        t.moveTo(startPos[0], startPos[1])
##        bounds = list(startPos + startPos)
        for char in aFractalString:
            if char=='F':
                t.fd(legLength)
                curPos = t.getXY()
##                bounds[0] = min(bounds[0], curPos[0])
##                bounds[1] = min(bounds[1], curPos[1])
##                bounds[2] = max(bounds[2], curPos[0])
##                bounds[3] = max(bounds[3], curPos[1])
            elif char=='+':
                t.rt(angle)
            elif char=='-':
                t.lt(angle)
            elif char=='B':
                t.bk(legLength)
            elif char=='[':
                t.push()
            elif char==']':
                t.pop()
##        return bounds


if __name__ == '__main__':
    app = model.Application(LSystem)
    app.MainLoop()

--- NEW FILE: lsystemInteractive.rsrc.py ---
{'application':{'type':'Application',
          'name':'Doodle',
    'backgrounds': [
    {'type':'Background',
          'name':'bgLSystem',
          'title':'L-System PythonCard Application',
          'position':(59, 74),
          'size':(579, 550),
          'statusBar':1,
          'style':['resizeable'],

        'menubar': {'type':'MenuBar',
         'menus': [
             {'type':'Menu',
             'name':'menuFile',
             'label':'&File',
             'items': [
                  {'type':'MenuItem',
                   'name':'menuFileOpen',
                   'label':'&Open...\tCtrl+O',
                  },
                  {'type':'MenuItem',
                   'name':'menuFileSaveAs',
                   'label':'Save &As...',
                  },
                  {'type':'MenuItem',
                   'name':'fileSep1',
                   'label':'-',
                  },
                  {'type':'MenuItem',
                   'name':'menuFileExit',
                   'label':'E&xit\tAlt+X',
                   'command':'exit',
                  },
              ]
             },
             {'type':'Menu',
             'name':'menuEdit',
             'label':'&Edit',
             'items': [
                  {'type':'MenuItem',
                   'name':'menuEditCopy',
                   'label':'&Copy\tCtrl+C',
                  },
                  {'type':'MenuItem',
                   'name':'menuEditPaste',
                   'label':'&Paste\tCtrl+V',
                  },
                  {'type':'MenuItem',
                   'name':'editSep1',
                   'label':'-',
                  },
                  {'type':'MenuItem',
                   'name':'menuEditClear',
                   'label':'&Clear',
                   'command':'editClear',
                  },
              ]
             },
             {'type':'Menu',
             'name':'menuRender',
             'label':'&Render',
             'items': [
                  {'type':'MenuItem',
                   'name':'menuRenderRenderNow',
                   'label':'&Render Now\tCtrl+R',
                   'command':'Render',
                  },
              ]
             },
         ]
     },
         'components': [

{'type':'TextField', 
    'name':'angleDisplay', 
    'position':(414, 25), 
    'size':(36, -1), 
    },

{'type':'StaticText', 
    'name':'StaticText2', 
    'position':(371, 29), 
    'text':'Angle:', 
    },

{'type':'Slider', 
    'name':'angle', 
    'position':(367, 54), 
    'size':(200, 20), 
    'labels':False, 
    'layout':'horizontal', 
    'max':360, 
    'min':0, 
    'tickFrequency':0, 
    'ticks':False, 
    'value':45, 
    },

{'type':'StaticText', 
    'name':'iterationDisplay', 
    'position':(427, 76), 
    },

{'type':'StaticText', 
    'name':'StaticText1', 
    'position':(368, 76), 
    'text':'Iterations:', 
    },

{'type':'Slider', 
    'name':'iterations', 
    'position':(364, 98), 
    'size':(200, 20), 
    'labels':False, 
    'layout':'horizontal', 
    'max':10, 
    'min':1, 
    'tickFrequency':0, 
    'ticks':False, 
    'value':3, 
    },

{'type':'Button', 
    'name':'btnRender', 
    'position':(1, 35), 
    'command':'Render', 
    'label':'Render', 
    },

{'type':'TextArea', 
    'name':'scriptField', 
    'position':(96, 0), 
    'size':(201, 118), 
    'text':'axiom=l\nl=+rf-lfl-fr+\nr=-lf+rfr+fl-', 
    },

{'type':'Button', 
    'name':'btnColor', 
    'position':(1, 67), 
    'label':'Color', 
    },

{'type':'BitmapCanvas', 
    'name':'onscreen', 
    'position':(0, 121), 
    'size':(568, 348), 
    #'backgroundColor':(0, 0, 0), 
    },

{'type':'BitmapCanvas', 
    'name':'bufOff', 
    'position':(0, 121), 
    'size':(568 * 4, 348 * 4), 
    #'backgroundColor':(0, 0, 0), 
    'visible':False,
    },

] # end components
} # end background
] # end backgrounds
} }

Index: readme.txt
===================================================================
RCS file: /cvsroot/pythoncard/PythonCard/samples/lsystem/readme.txt,v
retrieving revision 1.3
retrieving revision 1.4
diff -C2 -d -r1.3 -r1.4
*** readme.txt	14 May 2004 16:32:35 -0000	1.3
--- readme.txt	18 May 2004 17:20:31 -0000	1.4
***************
*** 5,7 ****
      http://www.biologie.uni-hamburg.de/b-online/e28_3/lsys.html
  
! Contributed by Arlo Belshee, Kim Wallmark, Ward Cunningham, and Kevin Altis.
\ No newline at end of file
--- 5,46 ----
      http://www.biologie.uni-hamburg.de/b-online/e28_3/lsys.html
  
! Contributed by Arlo Belshee, Kim Wallmark, Ward Cunningham, and Kevin Altis.
! 
! some examples until we have a file load/save implemented...
! 
! axiom=l
! l=+rf-lfl-fr+
! r=-lf+rfr+fl-
! 
! koch
! angle=10
! iterations=3
! axiom=f+f+f+f
! f=f+f-f-ff+f+f-f
! 
! seaweed
! angle=21
! iterations=3
! axiom=[f-f+af][+fa]
! a=ff+a-f
! f=f[-aff+fa+f-bbb][-ff]
! 
! wheat
! angle=10
! iterations=4
! axiom=f
! f=ff-[-f+f+f]+[+f-f-f]
! 
! stars
! angle=156
! iterations=4
! axiom=a
! a=ff+aaaaf+f+f--fffff
! 
! the world's most difficult crossword puzzle
! angle=89
! iterations=4
! axiom=a
! b=af+[-b]ff+f+fff
! a=affbb+b+b+af+b
!