/usr/share/pyshared/fltk/test/draw.py is in python-fltk 1.3.0-1.
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# "$Id: draw.py 67 2004-08-05 15:17:31Z andreasheld $"
#
# fl_draw test program for pyFLTK the Python bindings
# for the Fast Light Tool Kit (FLTK).
# Courtesy of G. Lielens!
#
# FLTK copyright 1998-1999 by Bill Spitzak and others.
# pyFLTK copyright 2003 by Andreas Held and others.
#
# This library is free software you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA.
#
# Please report all bugs and problems to "pyfltk-user@lists.sourceforge.net".
#
from fltk import *
from math import *
import sys
from array import *
width = 100
height = 100
image = array('B')
def make_image():
#image = new uchar[4*width*height];
#uchar *p = image;
p = image
index = 0
y = 0
while y < height:
dy = float(y)/(height-1)
x = 0
while x < width:
dx = float(x)/(width-1)
#print 255*((1.0-dx)*(1.0-dy))
p.append(int(255*((1.0-dx)*(1.0-dy))))
index = index+1
p.append(int(255*((1.0-dx)*dy)))
index = index+1
p.append(int(255*(dx*dy)))
index = index+1
dx = dx-0.5
dy = dy-0.5
alpha = int(255*sqrt(dx*dx+dy*dy))
if alpha < 255:
p.append(alpha)
else:
p.append(255)
index = index+1
dy = dy+0.5
x = x+1
y = y+1
return None
class MyWidget(Fl_Widget):
def __init__(self,x,y,w,h,image):
Fl_Widget.__init__(self, 0, 0, w, h, "canvas")
self._image=image
def draw(self):
w,h=self.w(),self.h()
fl_draw_image(self._image,w/2-50,h/2-50,width,height,4,0)
window = Fl_Window(400,400)
window.color(FL_WHITE)
make_image()
widget=MyWidget(0,0,400,400,image)
window.resizable(window)
window.end()
window.show(len(sys.argv), sys.argv)
Fl.run()
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