diff options
Diffstat (limited to 'layers.py')
| -rw-r--r-- | layers.py | 31 |
1 files changed, 22 insertions, 9 deletions
@@ -2,10 +2,10 @@ from PIL import Image from latLng import latLng class layer: - """a generic GPS image layer""" + """template for a GPS image layer""" tl=latLng() br=latLng() - pixel=latLng() + pixel=(0,0) def __init__(self,file,ll1,ll2): try: self.image=Image.open(file) @@ -17,8 +17,6 @@ class layer: self.pixsize=latLng(abs(self.tl.lat-self.br.lat)/self.image.size[1],abs(self.tl.lng-self.br.lng)/self.image.size[0]) except: print "gps layer: failed to parse", file - def findpixel(self,pos): - return (int((pos.lng-self.tl.lng)/self.pixsize.lng),int((pos.lat-self.br.lat)/self.pixsize.lat)) def checkcoord(self,pos): p=self.findpixel(pos) if p!=self.pixel: @@ -26,11 +24,13 @@ class layer: return self.setcoord(p) else: return None + def findpixel(self,pos): + return (int((pos.lng-self.tl.lng)/self.pixsize.lng),int((pos.lat-self.br.lat)/self.pixsize.lat)) def setcoord(self,pos): - """constructs a list of messages when values change" + """to be overwritten: + gets a messages when values change" returns None otherwise""" - result=None - return r + return None class trigger(): """a generic trigger - @@ -66,6 +66,19 @@ class scalelayer(layer): """generates a varying signal based on interpolating a greyscale image uses sub pixel position""" def findpixel(self,pos): - return (int((pos.lng-self.tl.lng)/self.pixsize.lng),int((pos.lat-self.br.lat)/self.pixsize.lat)) + #float version + return ((pos.lng-self.tl.lng)/self.pixsize.lng,(pos.lat-self.br.lat)/self.pixsize.lat) + def setcommand(self,command): + self.command=command def setcoord(self,pos): - result=None
\ No newline at end of file + px=int(pos[0]) + py=int(pos[1]) + c=float(self.image.getpixel((px,py)))/255.0 + c1=float(self.image.getpixel((px+1,py)))/255.0 + c2=float(self.image.getpixel((px,py+1)))/255.0 + c3=float(self.image.getpixel((px+1,py+1)))/255.0 + xf=pos[0]-px + yf=pos[1]-py + #lerp sub-pixel value + return (self.command,(((c*(1.0-xf))+(c1*xf))*(1.0-yf))+(((c2*(1.0-xf))+(c3*xf))*yf)) +
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