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Img2PlotXY.py
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Img2PlotXY.py
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import sys,collections,gc,time
from math import sqrt,sin,cos,acos,atan2,degrees,fabs,pow,modf,fmod
from Plotter import Lengths,Point,Plotter
from PIL import Image, ImageEnhance
import random
def inbox(p,box):
return (p.x>=box[0]) and (p.x<=box[2]) and (p.y>=box[1]) and (p.y<=box[3])
class MODES:
EW=1
NS=2
NWSE=3
NESW=4
def step_EW(p,step):
return Point(p.x+step,p.y)
def step_NS(p,step):
return Point(p.x,p.y+step)
def step_NWSE(p,step):
return Point(p.x+step/2,p.y+step/2)
def step_NESW(p,step):
return Point(p.x-step/2,p.y+step/2)
def start_EW(i,imageArea):
return Point(imageArea[0],i)
def start_NS(i,imageArea):
return Point(i,imageArea[1])
def start_NWSE(i,imageArea):
return Point(i,imageArea[0])
def start_NESW(i,imageArea):
return Point(i,imageArea[0])
def range_EW(imageArea,width):
return range(imageArea[1],imageArea[3],width)
def range_NS(imageArea,width):
return range(imageArea[0],imageArea[2],width)
def range_NWSE(imageArea,width):
height = (imageArea[3]-imageArea[1])
return range(imageArea[0]-height,imageArea[2],width)
def range_NESW(imageArea,width):
height = (imageArea[3]-imageArea[1])
return range(imageArea[0],imageArea[2]+height,width)
_funcs = { EW:(step_EW, start_EW, range_EW, (1.0,0.0)),
NS:(step_NS, start_NS, range_NS, (0.0,1.0)),
NWSE:(step_NWSE,start_NWSE,range_NWSE, (1.0,1.0)),
NESW:(step_NESW,start_NESW,range_NESW, (-1.0,1.0)) }
@staticmethod
def step(mode,p,step):
return MODES._funcs[mode][0](p,step)
@staticmethod
def start(mode,i,imageArea):
return MODES._funcs[mode][1](i,imageArea)
@staticmethod
def range(mode,imageArea,width):
return MODES._funcs[mode][2](imageArea,width)
@staticmethod
def stepDelta(mode):
return MODES._funcs[mode][3]
class Img2Plot(Plotter):
def __init__(self,image,plotfile,plotarea,shadelevels):
Plotter.__init__(self,plotfile)
# set up
self.plotarea = plotarea
self.spacing = 5
self.image = image
self.scaleImage()
#shadelevels = self.detectShades(1.0)
#print ("auto leveled for %s" % (shadelevels))
#shadelevels = [52,88,150,200]
#shadelevels = [88,118,150,200]
print ("overriding with for %s" % (shadelevels))
minshade = 0
print ("auto leveled for %s" % (shadelevels))
self.shades = {
MODES.EW: (minshade, int(shadelevels[0]), False, 0),
MODES.NS: (minshade, int(shadelevels[1]), False, 0),
MODES.NESW: (minshade, int(shadelevels[2]), False, 0),
MODES.NWSE: (minshade, int(shadelevels[3]), True, (shadelevels[2]+shadelevels[3])/2)
}
#self.image.save("out.png","PNG")
def scaleImage(self):
bbox = self.image.getbbox()
dims = (bbox[2],bbox[3])
plotareaDims=(self.plotarea[2]-self.plotarea[0],self.plotarea[3]-self.plotarea[1])
if (dims[0]>plotareaDims[0]) or (dims[1]>plotareaDims[1]):
scaleDims = (float(plotareaDims[0])/float(dims[0]),float(plotareaDims[1])/float(dims[1]))
# scale by the smallest
scale = min(scaleDims)
self.image = image.resize((int(scale*dims[0]),int(scale*dims[1])))
print("scaling to %s" % scale)
else:
self.image = image
self.image = self.image.convert("L")
#self.image = ImageEnhance.Contrast(self.image).enhance(contrast)
#self.image = ImageEnhance.Brightness(self.image).enhance(brightness)
self.imageArea = (self.plotarea[0],self.plotarea[1],
min(self.plotarea[2],self.image.getbbox()[2]+self.plotarea[0]),
min(self.plotarea[3],self.image.getbbox()[3]+self.plotarea[1]))
print(self.imageArea)
print(self.image.getbbox())
def detectShades(self,scale):
bbox = self.image.getbbox()
total = 0
histogram = {}
for x in range(0,bbox[2],5):
for y in range(0,bbox[3],5):
pix = self.image.getpixel((x,y))
if pix in histogram:
histogram[pix] = 1+histogram[pix]
else:
histogram[pix] = 1
total = total+pix
total = total*scale
shades = []
skews = [.25, .5, .75, 1]
for i in [total*skews[0], total*skews[1], total*skews[2], total*skews[3]]:
integral = 0
for k in histogram:
value = histogram[k]
integral = integral+value*k
if integral>=i:
shades.append(k)
break
return shades
def draw(self):
#allmodes = [MODES.NWSE,MODES.NESW,MODES.EW,MODES.NS]
allmodes = [MODES.EW,MODES.NS,MODES.NWSE, MODES.NESW]
#allmodes = [MODES.NWSE,MODES.NS, MODES.NS]
#allmodes = [MODES.EW]
#allmodes = [MODES.EW, MODES.NWSE]
for m in allmodes:
self.sweep(m)
return
def sweep(self,mode):
r = MODES.range(mode,self.imageArea,self.spacing)
fwd = True
for i in r:
commands = self.sweep1(mode,i)
fwd = self.write(commands,fwd)
print("")
print("done sweeping")
return
def write(self,commands,fwd):
if (len(commands)==0):
return fwd
if (not(fwd)):
commands.reverse()
for c in commands:
if (fwd):
self.drawLineTo(c[0],False)
self.drawLineTo(c[1],True)
else:
self.drawLineTo(c[1],False)
self.drawLineTo(c[0],True)
return not(fwd)
def sweep1(self,mode,i):
def inbox(p):
return ((p.x>=self.imageArea[0]) and (p.x<self.imageArea[2])) and ((p.y>=self.imageArea[1]) and (p.y<self.imageArea[3]))
def offpage(p):
return ((p.x>self.imageArea[2]) or (p.y>self.imageArea[3]))
print(".",end="",flush=True)
points = []
p = MODES.start(mode,i,self.imageArea)
delta = (MODES.stepDelta(mode)[0]*self.stepLength/2.0,
MODES.stepDelta(mode)[1]*self.stepLength/2.0)
offset = Point(self.imageArea[0],self.imageArea[1])
vrange = self.shades[mode]
state = 0
#print p
inline = False
startingOffpage = offpage(p)
_from = p
dashsize = 0
dashon = True
while startingOffpage or not(offpage(p)):
if not(offpage(p)):
startingOffpage=False
#print p
_inbox = inbox(p)
if _inbox:
state=1
elif (state==1) and not(_inbox):
break
if _inbox:
pix = self.image.getpixel((p.x-offset.x,p.y-offset.y))
#pencommand = 2 if (pix>vrange[0] and pix<=vrange[1] and (vrange[2]==False or random.randint(vrange[3],vrange[1]) > pix)) else 1 # 2 down, 1 up
pencommand = 1
if (pix>vrange[0] and pix<=vrange[1]):
if (vrange[2]==False):
pencommand = 2
elif dashsize > 0:
pencommand = 2 if dashon else 1
dashsize = dashsize - 1
elif (random.randint(vrange[3],vrange[1]) > pix):
pencommand = 2
dashsize = random.randint(5,10)
dashon = True
else:
pencommand = 1
dashsize = 8 # random.randint(5,10)
dashon = False
if (pencommand==2 and inline==False):
# now check to see if the last line was within 2 steps max(X,Y)
_from=p
if (len(points)>0 and vrange[2]==False):
lastpoint = points[-1]
if max(p.x-lastpoint[1].x,p.y-lastpoint[1].y)<2.0*self.stepLength:
#reset _from
#print "resetting"
points.pop()
_from=lastpoint[0]
inline=True
if (pencommand==1 and inline==True):
points.append((_from,p))
inline=False
p = Point(p.x+delta[0],p.y+delta[1])
if (delta[0]==0 and delta[1]==0):
print("deltas are zero")
break
#close a line
if (inline==True):
points.append((_from,p))
#print len(points)
#print "ended @ ",p
return points
#
# MAIN
#
sourcefile = sys.argv[1]
plotfile = open(sys.argv[2],'wb')
shadelevels = [float(sys.argv[3]), float(sys.argv[4]), float(sys.argv[5]), float(sys.argv[6])]
image = Image.open(sourcefile)
margins = [ 200, 300, 200, 500] # left, top, right down
totalarea = (1200, 1700)
plotarea = (margins[0],margins[1],totalarea[0]-margins[2],totalarea[1]-margins[3])
v = Img2Plot(image,plotfile,plotarea, shadelevels)
#shadelevels = v.detectShades(float(shadescale))
v.draw()
#v.drawLineTo(Point(margins[0],margins[1]), False)
#v.drawLineTo(Point(margins[0],totalarea[0]-margins[2]), True)
#v.drawLineTo(Point(totalarea[0]-margins[2],margins[1]), True)
#v.drawLineTo(Point(totalarea[0]-margins[2],totalarea[1]-margins[3]), True)
#v.drawLineTo(Point(margins[0],totalarea[1]-margins[3]), True)
#v.drawLineTo(Point(margins[0],margins[1]), True)
#v.drawLineTo(Point(margins[0],margins[1]), False)
#v.reset()
print ("done.")