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svg/SvgProcessor: Round correctly, support subpixel shifting

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This commit is contained in:
Petr Baudis 2011-12-28 02:54:24 +01:00
parent 270209083e
commit 3e76f2d552
1 changed files with 17 additions and 16 deletions
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33
svg/SvgProcessor.py
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@ -8,6 +8,7 @@ class SVGHandler(xml.sax.handler.ContentHandler):
# self.LD = LD # self.LD = LD
self.scale = scale self.scale = scale
self.speed = 5 self.speed = 5
self.subshift = 0
def startElement(self, name, attrs): def startElement(self, name, attrs):
if name == 'path': if name == 'path':
@ -46,9 +47,9 @@ class SVGHandler(xml.sax.handler.ContentHandler):
nx = x+float(delta[0])*self.scale nx = x+float(delta[0])*self.scale
ny = y+float(delta[1])*self.scale ny = y+float(delta[1])*self.scale
print "l 0 1" print "l 0 1"
print "v", self.speed, math.trunc(x), math.trunc(y), "2" print "v", self.speed, round(x+self.subshift), round(y+self.subshift), "2"
print "l 254 1" print "l 254 1"
print "v", self.speed, math.trunc(nx), math.trunc(ny), "3" print "v", self.speed, round(nx+self.subshift), round(ny+self.subshift), "3"
# self.LD.draw_line(x, y, nx, ny) # self.LD.draw_line(x, y, nx, ny)
x,y = nx,ny x,y = nx,ny
@ -57,17 +58,17 @@ class SVGHandler(xml.sax.handler.ContentHandler):
nx = float(delta[0])*self.scale nx = float(delta[0])*self.scale
ny = float(delta[1])*self.scale ny = float(delta[1])*self.scale
print "l 0 1" print "l 0 1"
print "v", self.speed, math.trunc(x), math.trunc(y), "2" print "v", self.speed, round(x+self.subshift), round(y+self.subshift), "2"
print "l 254 1" print "l 254 1"
print "v", self.speed, math.trunc(nx), math.trunc(ny), "3" print "v", self.speed, round(nx+self.subshift), round(ny+self.subshift), "3"
# self.LD.draw_line(x, y, nx, ny) # self.LD.draw_line(x, y, nx, ny)
x,y = nx,ny x,y = nx,ny
elif cmd == 'z' or cmd == 'Z': elif cmd == 'z' or cmd == 'Z':
i -= 1 i -= 1
print "l 0 1" print "l 0 1"
print "v", self.speed, math.trunc(x), math.trunc(y), "2" print "v", self.speed, round(x+self.subshift), round(y+self.subshift), "2"
print "l 254 1" print "l 254 1"
print "v", self.speed, math.trunc(x0), math.trunc(y0), "3" print "v", self.speed, round(x0+self.subshift), round(y0+self.subshift), "3"
# self.LD.draw_line(x, y, x0, y0) # self.LD.draw_line(x, y, x0, y0)
x,y = x0,y0 x,y = x0,y0
elif cmd == 'h': elif cmd == 'h':
@ -75,36 +76,36 @@ class SVGHandler(xml.sax.handler.ContentHandler):
nx = x+float(delta)*self.scale nx = x+float(delta)*self.scale
# self.LD.draw_line(x, y, nx, y) # self.LD.draw_line(x, y, nx, y)
print "l 0 1" print "l 0 1"
print "v", self.speed, math.trunc(x), math.trunc(y), "2" print "v", self.speed, round(x+self.subshift), round(y+self.subshift), "2"
print "l 254 1" print "l 254 1"
print "v", self.speed, math.trunc(nx), math.trunc(y), "3" print "v", self.speed, round(nx+self.subshift), round(y+self.subshift), "3"
x = nx x = nx
elif cmd == 'H': elif cmd == 'H':
delta = tokens[i] delta = tokens[i]
nx = float(delta)*self.scale nx = float(delta)*self.scale
# self.LD.draw_line(x, y, nx, y) # self.LD.draw_line(x, y, nx, y)
print "l 0 1" print "l 0 1"
print "v", self.speed, math.trunc(x), math.trunc(y), "2" print "v", self.speed, round(x+self.subshift), round(y+self.subshift), "2"
print "l 254 1" print "l 254 1"
print "v", self.speed, math.trunc(nx), math.trunc(y), "3" print "v", self.speed, round(nx+self.subshift), round(y+self.subshift), "3"
x = nx x = nx
elif cmd == 'v': elif cmd == 'v':
delta = tokens[i] delta = tokens[i]
ny = y+float(delta)*self.scale ny = y+float(delta)*self.scale
# self.LD.draw_line(x, y, x, ny) # self.LD.draw_line(x, y, x, ny)
print "l 0 1" print "l 0 1"
print "v", self.speed, math.trunc(x), math.trunc(y), "2" print "v", self.speed, round(x+self.subshift), round(y+self.subshift), "2"
print "l 254 1" print "l 254 1"
print "v", self.speed, math.trunc(x), math.trunc(ny), "3" print "v", self.speed, round(x+self.subshift), round(ny+self.subshift), "3"
y = ny y = ny
elif cmd == 'V': elif cmd == 'V':
delta = tokens[i] delta = tokens[i]
ny = float(delta)*self.scale ny = float(delta)*self.scale
# self.LD.draw_line(x, y, x, ny) # self.LD.draw_line(x, y, x, ny)
print "l 0 1" print "l 0 1"
print "v", self.speed, math.trunc(x), math.trunc(y), "2" print "v", self.speed, round(x+self.subshift), round(y+self.subshift), "2"
print "l 254 1" print "l 254 1"
print "v", self.speed, math.trunc(x), math.trunc(ny), "3" print "v", self.speed, round(x+self.subshift), round(ny+self.subshift), "3"
y = ny y = ny
elif cmd == 'c': elif cmd == 'c':
ctrl1 = tokens[i].split(',') ctrl1 = tokens[i].split(',')
@ -171,9 +172,9 @@ class SVGHandler(xml.sax.handler.ContentHandler):
# self.LD.set_color(color) # self.LD.set_color(color)
# self.LD.draw_line(x1,y1,x2,y2) # self.LD.draw_line(x1,y1,x2,y2)
print "l 0 1" print "l 0 1"
print "v", self.speed, math.trunc(x1), math.trunc(y1), "2" print "v", self.speed, round(x1+self.subshift), round(y1+self.subshift), "2"
print "l 254 1" print "l 254 1"
print "v", self.speed, math.trunc(x2), math.trunc(y2), "3" print "v", self.speed, round(x2+self.subshift), round(y2+self.subshift), "3"
class SvgProcessor(): class SvgProcessor():