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from __future__ import with_statement
from math import sin, cos, pi
from numpy import array, arange
import kiva
from kiva import agg
def draw_circle(gc,radius=2):
gc.begin_path()
angle = 0
gc.move_to(radius*cos(angle), radius*sin(angle))
for angle in arange(pi/4.,2*pi,pi/4.):
gc.line_to(radius*cos(angle), radius*sin(angle))
gc.close_path()
gc.fill_path()
star_points = [(-20,-30),
(0, 30),
(20,-30),
(-30,10),
(30,10),
(-20,-30)]
ring_point = (0,35)
ring_radius = 5
#fill_color = array((1.0,0,0))
fill_color = array((200.,184.,106.))/255.
point_color = array((.3,.3,.3))
line_color = point_color
for i in range(len(star_points)+1):
gc = agg.GraphicsContextArray((800,800))
gc.scale_ctm(8.0,8.0)
gc.translate_ctm(50,50)
# draw star
gc.set_alpha(.5)
x,y = star_points[0]
gc.move_to(x,y)
for x,y in star_points[1:]:
gc.line_to(x,y)
gc.close_path()
gc.set_fill_color(fill_color)
gc.get_fill_color()
gc.fill_path()
gc.set_alpha(.4)
gc.set_stroke_color(line_color)
gc.set_fill_color(line_color)
gc.set_line_width(12)
if i > 0:
with gc:
x,y = star_points[0]
gc.translate_ctm(x,y)
draw_circle(gc)
if i > 1:
points = star_points[:i]
with gc:
x,y = points[0]
gc.move_to(x,y)
for x,y in points[1:]:
gc.line_to(x,y)
gc.stroke_path()
"""
for x,y in points:
with gc:
gc.translate_ctm(x,y)
draw_circle(gc)
"""
gc.save("star_path%d.bmp" % i)
# draw star
line_color = (0.0,0.0,0.0)
gc = agg.GraphicsContextArray((800,800))
gc.scale_ctm(8.0,8.0)
gc.translate_ctm(50,50)
print 'line color:', line_color
print 'fill color:', fill_color
gc.set_stroke_color(line_color)
gc.set_fill_color(fill_color)
gc.set_line_width(12)
x,y = star_points[0]
gc.move_to(x,y)
for x,y in star_points[1:]:
gc.line_to(x,y)
gc.close_path()
gc.set_fill_color(fill_color)
gc.get_fill_color()
gc.draw_path()
gc.save("star_path7.bmp")
# draw star
gc = agg.GraphicsContextArray((1700,400))
line_color = (0.0,0.0,0.0)
gc.scale_ctm(4.0,4.0)
offsets = array(((0,0),(80,0),(160,0),(240,0),(320,0)))
modes = [agg.FILL, agg.EOF_FILL, agg.STROKE, agg.FILL_STROKE, agg.EOF_FILL_STROKE]
pairs = zip(modes, offsets)
center = array((50,50))
for mode, offset in pairs:
with gc:
xo,yo = center+offset
gc.translate_ctm(xo,yo)
print 'line color:', line_color
print 'fill color:', fill_color
gc.set_stroke_color(line_color)
gc.set_fill_color(fill_color)
gc.set_line_width(12)
x,y = star_points[0]
gc.move_to(x,y)
for x,y in star_points[1:]:
gc.line_to(x,y)
gc.close_path()
gc.set_fill_color(fill_color)
gc.get_fill_color()
gc.draw_path(mode)
gc.save("star_path8.bmp")
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