def addToDrawing(self, drawing, layer='0'):
Shape.addToDrawing(self, drawing) #params: {'points' : [((x, y), angle, (strengthIn, strengthOut))]}
curve = dxf.bezier(layer = layer)
points = self.p['points']
vectors = self.makeVectors(self.p['points'][0])
curve.start(points[0][0], vectors[1])
for i in range(1, len(points)):
strengthIn = points[i][2][0]
strengthOut = points[i][2][1]
angle = radians(points[i][1])
vectors = self.makeVectors(self.p['points'][i])
segments = int(hypot(points[i-1][0][0] - points[i][0][0], points[i-1][0][1] - points[i][0][1]) / minLineSize) + 1
curve.append(points[i][0], vectors[0], vectors[1], segments)
drawing.add(curve)
def main():
"""Run as a command line program."""
parser = OptionParser()
parser.add_option("-i", "--infile", dest="infile",
help="read specification from INFILE", metavar="INFILE")
parser.add_option("-u", "--url", dest="url",
help="read specification from URL", metavar="URL")
parser.add_option("-o", "--outdir", dest="outdir",
help="write manufacturing instruction files to OUTDIR", metavar="OUTDIR")
(options, args) = parser.parse_args()
if (options.infile == None and options.url == None) or options.outdir == None:
log("Insufficient arguments.")
parser.print_help()
sys.exit(0)
infile = open(options.infile) if options.infile else urllib.urlopen(options.url)
o = json.loads(infile.read())
outdir = options.outdir
if not os.path.exists(outdir):
os.makedirs(outdir)
def draw_control_point(point, tangent1, tangent2=(0, 0)):
tp1 = vadd(point, tangent1)
tp2 = vadd(point, tangent2)
dwg.add(dxf.circle(0.05, center=point, color=1))
dwg.add(dxf.line(point, tp1, color=2))
dwg.add(dxf.line(point, tp2, color=2))
# Create a dxf for cutting the outline on the laser cutter
filename = '/Users/rodfrey/Dropbox/outer_contour.dxf'
beziers = beziers_to_dxf(o["outercurve_beziers"])
dwg = dxf.drawing(filename)
dwg.add_layer('OUTLINE', color=1)
bez = dxf.bezier(layer="OUTLINE")
bez.start(beziers[0][0], tangent=vsub(beziers[0][1], beziers[0][0]))
draw_control_point(beziers[0][0], tangent1=vsub(beziers[0][1], beziers[0][0]))
# draw_control_point(beziers[0][0], tangent1=beziers[0][1])
for idx, b1 in enumerate(beziers[0:-1]):
b2 = beziers[idx+1]
bez.append(b1[3], tangent1=vsub(b1[2], b1[3]), tangent2=vsub(b2[1], b1[2]))
draw_control_point(b1[3], tangent1=vsub(b1[2], b1[3]), tangent2=vsub(b2[1], b1[2]))
# draw_control_point(b1[3], tangent1=b1[2], tangent2=b2[1])
bez.append(beziers[-1][3], tangent1=vsub(beziers[-1][2], beziers[-1][3]))
dwg.add(bez)
dwg.save()
import dxfwrite
from dxfwrite import DXFEngine as dxf
from dxfwrite.vector2d import vadd
def draw_control_point(point, tangent1, tangent2=(0, 0)):
tp1 = vadd(point, tangent1)
tp2 = vadd(point, tangent2)
dwg.add(dxf.circle(0.05, center=point, color=1))
dwg.add(dxf.line(point, tp1, color=2))
dwg.add(dxf.line(point, tp2, color=2))
name = 'bezier.dxf'
dwg = dxf.drawing(name)
bezier = dxf.bezier(color=4)
dwg.add(bezier)
# define start point
bezier.start((2, 4), tangent=(0, 2))
draw_control_point((2, 4), (0, 2))
# append first point
bezier.append((6, 7), tangent1=(-2, 0), tangent2=(1, 2))
draw_control_point((6, 7), (-2, 0), (1, 2))
# tangent2 = -tangent1 = (+2, 0)
bezier.append((12, 5), tangent1=(-2, 0))
draw_control_point((12, 5), (-2, 0), (2, 0))
# for last point tangent2 is meaningless
def main():
"""Run as a command line program."""
parser = OptionParser()
parser.add_option("-i",
"--infile",
dest="infile",
help="read specification from INFILE",
metavar="INFILE")
parser.add_option("-u",
"--url",
dest="url",
help="read specification from URL",
metavar="URL")
parser.add_option("-o",
"--outdir",
dest="outdir",
help="write manufacturing instruction files to OUTDIR",
metavar="OUTDIR")
(options, args) = parser.parse_args()
if (options.infile == None
and options.url == None) or options.outdir == None:
log("Insufficient arguments.")
parser.print_help()
sys.exit(0)
infile = open(options.infile) if options.infile else urllib.urlopen(
options.url)
o = json.loads(infile.read())
outdir = options.outdir
if not os.path.exists(outdir):
os.makedirs(outdir)
def draw_control_point(point, tangent1, tangent2=(0, 0)):
tp1 = vadd(point, tangent1)
tp2 = vadd(point, tangent2)
dwg.add(dxf.circle(0.05, center=point, color=1))
dwg.add(dxf.line(point, tp1, color=2))
dwg.add(dxf.line(point, tp2, color=2))
# Create a dxf for cutting the outline on the laser cutter
filename = '/Users/rodfrey/Dropbox/outer_contour.dxf'
beziers = beziers_to_dxf(o["outercurve_beziers"])
dwg = dxf.drawing(filename)
dwg.add_layer('OUTLINE', color=1)
bez = dxf.bezier(layer="OUTLINE")
bez.start(beziers[0][0], tangent=vsub(beziers[0][1], beziers[0][0]))
draw_control_point(beziers[0][0],
tangent1=vsub(beziers[0][1], beziers[0][0]))
# draw_control_point(beziers[0][0], tangent1=beziers[0][1])
for idx, b1 in enumerate(beziers[0:-1]):
b2 = beziers[idx + 1]
bez.append(b1[3],
tangent1=vsub(b1[2], b1[3]),
tangent2=vsub(b2[1], b1[2]))
draw_control_point(b1[3],
tangent1=vsub(b1[2], b1[3]),
tangent2=vsub(b2[1], b1[2]))
# draw_control_point(b1[3], tangent1=b1[2], tangent2=b2[1])
bez.append(beziers[-1][3], tangent1=vsub(beziers[-1][2], beziers[-1][3]))
dwg.add(bez)
dwg.save()
sys.path.insert(0, os.path.abspath(os.path.join(curdir, os.path.pardir)))
import dxfwrite
from dxfwrite import DXFEngine as dxf
from dxfwrite.vector2d import vadd
def draw_control_point(point, tangent1, tangent2=(0, 0)):
tp1 = vadd(point, tangent1)
tp2 = vadd(point, tangent2)
dwg.add(dxf.circle(0.05, center=point, color=1))
dwg.add(dxf.line(point, tp1, color=2))
dwg.add(dxf.line(point, tp2, color=2))
name = 'bezier.dxf'
dwg = dxf.drawing(name)
bezier = dxf.bezier(color=4)
dwg.add(bezier)
# define start point
bezier.start((2, 4), tangent=(0, 2))
draw_control_point((2, 4), (0, 2))
# append first point
bezier.append((6, 7), tangent1=(-2, 0), tangent2=(1, 2))
draw_control_point((6, 7), (-2, 0), (1, 2))
# tangent2 = -tangent1 = (+2, 0)
bezier.append((12, 5), tangent1=(-2, 0))
draw_control_point((12, 5), (-2, 0), (2, 0))
# for last point tangent2 is meaningless
