#! /usr/bin/env python

import cairo
from math import pi
import sys
import time

scl=0.95
#scl=0.99425220665277636
iter=250
#xdp=-200
#angle = 2
angle=0
xdp=-15

if len(sys.argv) == 2:
    fct=float(sys.argv[1])*10
    angle *= fct
    xdp *= fct

print "Setup:",time.clock()
iw, ih = iwidth, iheight = 1165,1165
#surface = cairo.SVGSurface("thx.svg",iwidth, iheight)
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32,iwidth, iheight)
cr = cairo.Context(surface)

width, height = w,h = 1000,1000
cr.scale(float(iw) / w, float(ih)/h)

# Fill in the background
cr.set_source_rgb(1,1,1)
cr.paint()

fopt = cairo.FontOptions()
fopt.set_hint_metrics(cairo.HINT_METRICS_OFF)
fopt.set_hint_style(cairo.HINT_STYLE_NONE)

def mkthx(cr):
    # Paint a thankyou centered at the current coordinates
    cr.save()
    cr.set_source_rgb(0,0,0)
    cr.select_font_face("Courier 10 Pitch")
    cr.set_font_options(fopt)
    txt = "Thank you"
    xb, yb, tw, th, xtr, ytr = cr.text_extents(txt)
    cr.move_to(-xtr/2, -ytr/2)
    cr.text_path(txt)
    cr.fill()
    cr.restore()

# Move to image center
cr.translate(w/2., h/2.)
# And paint a heart
mkthx(cr)

class iterfactory:
    def __init__(self, surface, angle, xdp, ydp, scl, iterf):
        self.surface,self.angle,self.xdp,self.ydp,self.scl=surface,angle,xdp,ydp,scl
        self.iterf = iterf
        self.cr = cairo.Context(self.surface)
        self.cr.scale(float(iw)/w, float(ih)/h)
        self.cr.translate(w/2., h/2.)
        
    def iterate(self):
        self.cr.translate(self.xdp, self.ydp)
        self.cr.rotate(pi / 180 * self.angle)
        self.cr.scale(self.scl, self.scl)
        self.iterf(self.cr)


print "Begin iterate:", time.clock()
factories = [
    #iterfactory(surface, angle,  xdp, 0, scl, mkthx),
    #iterfactory(surface, angle, -xdp, 0, scl, mkthx),
    iterfactory(surface, angle, 0,  xdp, scl, mkthx),
    iterfactory(surface, angle, 0, -xdp, scl, mkthx)
    ]
    
for i in range(iter):
    for f in factories:
        f.iterate()

print "Commence output:", time.clock()
surface.write_to_png("thx.png")
print "Complete:", time.clock()