def decorate(self, dp, texrunner):
dp.ensurenormpath()
l = dp.path.arclen()
colors = [self.grad.select(n, self.steps) for n in range(self.steps)]
colors.reverse()
params = dp.path.arclentoparam([l*i/float(self.steps) for i in range(self.steps)])
params.reverse()
c = canvas.canvas()
# treat the end pieces separately
c.stroke(dp.path.split(params[1])[1], attr.mergeattrs([colors[0]] + self.attrs))
for n in range(1,self.steps-1):
c.stroke(dp.path.split([params[n-1],params[n+1]])[1], attr.mergeattrs([colors[n]] + self.attrs))
c.stroke(dp.path.split(params[-2])[0], attr.mergeattrs([colors[-1]] + self.attrs))
dp.ornaments.insert(c)
def decorate(self, dp, texrunner):
if self.texrunner:
texrunner = self.texrunner
import text as textmodule
textattrs = attr.mergeattrs([textmodule.halign.center, textmodule.vshift.mathaxis] + self.textattrs)
dp.ensurenormpath()
if self.arclenfrombegin is not None:
param = dp.path.begin() + self.arclenfrombegin
elif self.arclenfromend is not None:
param = dp.path.end() - self.arclenfromend
else:
# relarcpos is used, when neither arcfrombegin nor arcfromend is given
param = self.relarclenpos * dp.path.arclen()
x, y = dp.path.at(param)
if self.relangle is not None:
a = dp.path.trafo(param).apply_pt(math.cos(self.relangle*math.pi/180), math.sin(self.relangle*math.pi/180))
b = dp.path.trafo(param).apply_pt(0, 0)
angle = math.atan2(a[1] - b[1], a[0] - b[0])
else:
angle = self.angle*math.pi/180
t = texrunner.text(x, y, self.text, textattrs)
t.linealign(self.textdist, math.cos(angle), math.sin(angle))
dp.ornaments.insert(t)
def decorate(self, dp, texrunner):
if self.texrunner:
texrunner = self.texrunner
import text as textmodule
textattrs = attr.mergeattrs(
[textmodule.halign.center, textmodule.vshift.mathaxis] +
self.textattrs)
dp.ensurenormpath()
if self.arclenfrombegin is not None:
param = dp.path.begin() + self.arclenfrombegin
elif self.arclenfromend is not None:
param = dp.path.end() - self.arclenfromend
else:
# relarcpos is used, when neither arcfrombegin nor arcfromend is given
param = self.relarclenpos * dp.path.arclen()
x, y = dp.path.at(param)
if self.relangle is not None:
a = dp.path.trafo(param).apply_pt(
math.cos(self.relangle * math.pi / 180),
math.sin(self.relangle * math.pi / 180))
b = dp.path.trafo(param).apply_pt(0, 0)
angle = math.atan2(a[1] - b[1], a[0] - b[0])
else:
angle = self.angle * math.pi / 180
t = texrunner.text(x, y, self.text, textattrs)
t.linealign(self.textdist, math.cos(angle), math.sin(angle))
dp.ornaments.insert(t)
def draw(self, path, attrs):
"""draw path on canvas using the style given by args
The argument attrs consists of PathStyles, which modify
the appearance of the path, PathDecos, which add some new
visual elements to the path, or trafos, which are applied
before drawing the path.
"""
attrs = attr.mergeattrs(attrs)
attr.checkattrs(attrs, [
deco.deco, deformer.deformer, style.fillstyle, style.strokestyle,
style.fillrule
])
for adeformer in attr.getattrs(attrs, [deformer.deformer]):
path = adeformer.deform(path)
styles = attr.getattrs(attrs, [style.fillstyle, style.strokestyle])
fillrule, = attr.getattrs(
attrs, [style.fillrule]) or [style.fillrule.nonzero_winding]
dp = deco.decoratedpath(path, styles=styles, fillrule=fillrule)
# add path decorations and modify path accordingly
for adeco in attr.getattrs(attrs, [deco.deco]):
adeco.decorate(dp, self.texrunner)
self.insert(dp)
def __init__(self, dist, angle, strokestyles=[]):
pattern.__init__(self, painttype=1, tilingtype=1, xstep=dist, ystep=100*unit.t_pt, bbox=None, trafo=trafo.rotate(angle))
self.strokestyles = attr.mergeattrs([style.linewidth.THIN] + strokestyles)
attr.checkattrs(self.strokestyles, [style.strokestyle])
self.dist = dist
self.angle = angle
self.stroke(path.line_pt(0, -50, 0, 50), self.strokestyles)
def draw(self, path, attrs):
"""draw path on canvas using the style given by args
The argument attrs consists of PathStyles, which modify
the appearance of the path, PathDecos, which add some new
visual elements to the path, or trafos, which are applied
before drawing the path.
"""
attrs = attr.mergeattrs(attrs)
attr.checkattrs(attrs, [deco.deco, deformer.deformer, style.fillstyle, style.strokestyle, style.fillrule])
for adeformer in attr.getattrs(attrs, [deformer.deformer]):
path = adeformer.deform(path)
styles = attr.getattrs(attrs, [style.fillstyle, style.strokestyle])
fillrule, = attr.getattrs(attrs, [style.fillrule]) or [style.fillrule.nonzero_winding]
dp = deco.decoratedpath(path, styles=styles, fillrule=fillrule)
# add path decorations and modify path accordingly
for adeco in attr.getattrs(attrs, [deco.deco]):
adeco.decorate(dp, self.texrunner)
self.insert(dp)
def __init__(self, dist, angle, strokestyles=[], cross=0):
attr.clearclass.__init__(self, _filled)
attr.exclusiveattr.__init__(self, linehatched)
self.dist = dist
self.angle = angle
self.strokestyles = attr.mergeattrs([style.linewidth.THIN] + strokestyles)
attr.checkattrs(self.strokestyles, [style.strokestyle])
self.cross = cross
def __init__(self, attrs=[], pos=1, reversed=0, size=_base, angle=45, constriction=0.8):
self.attrs = attr.mergeattrs([style.linestyle.solid, filled] + attrs)
attr.checkattrs(self.attrs, [deco, style.fillstyle, style.strokestyle])
self.pos = pos
self.reversed = reversed
self.size = size
self.angle = angle
self.constriction = constriction
def __init__(self, dist, angle, strokestyles=[], cross=0):
attr.clearclass.__init__(self, _filled)
attr.exclusiveattr.__init__(self, linehatched)
self.dist = dist
self.angle = angle
self.strokestyles = attr.mergeattrs([style.linewidth.THIN] +
strokestyles)
attr.checkattrs(self.strokestyles, [style.strokestyle])
self.cross = cross
def decorate(self, dp, texrunner):
dp.ensurenormpath()
l = dp.path.arclen()
colors = [self.grad.select(n, self.steps) for n in range(self.steps)]
colors.reverse()
params = dp.path.arclentoparam(
[l * i / float(self.steps) for i in range(self.steps)])
params.reverse()
c = canvas.canvas()
# treat the end pieces separately
c.stroke(
dp.path.split(params[1])[1],
attr.mergeattrs([colors[0]] + self.attrs))
for n in range(1, self.steps - 1):
c.stroke(
dp.path.split([params[n - 1], params[n + 1]])[1],
attr.mergeattrs([colors[n]] + self.attrs))
c.stroke(
dp.path.split(params[-2])[0],
attr.mergeattrs([colors[-1]] + self.attrs))
dp.ornaments.insert(c)
def __init__(self,
attrs=[],
pos=1,
reversed=0,
size=_base,
angle=45,
constriction=0.8):
self.attrs = attr.mergeattrs([style.linestyle.solid, filled] + attrs)
attr.checkattrs(self.attrs, [deco, style.fillstyle, style.strokestyle])
self.pos = pos
self.reversed = reversed
self.size = size
self.angle = angle
self.constriction = constriction
def decorate(self, dp, texrunner):
if self.texrunner:
texrunner = self.texrunner
import text as textmodule
textattrs = attr.mergeattrs([textmodule.halign.center, textmodule.vshift.mathaxis] + self.textattrs)
dp.ensurenormpath()
if self.arclenfrombegin is not None:
x, y = dp.path.at(dp.path.begin() + self.arclenfrombegin)
elif self.arclenfromend is not None:
x, y = dp.path.at(dp.path.end() - self.arclenfromend)
else:
# relarcpos is used, when neither arcfrombegin nor arcfromend is given
x, y = dp.path.at(self.relarclenpos * dp.path.arclen())
t = texrunner.text(x, y, self.text, textattrs)
t.linealign(self.textdist, math.cos(self.angle*math.pi/180), math.sin(self.angle*math.pi/180))
dp.ornaments.insert(t)
def __init__(self, attrs=[], pos=1, reversed=0, size=_base, angle=45, constriction=0.8):
self.attrs = attr.mergeattrs([style.linestyle.solid, filled] + attrs)
attr.checkattrs(self.attrs, [deco, style.fillstyle, style.strokestyle])
self.pos = pos
self.reversed = reversed
self.size = size
self.angle = angle
self.constriction = constriction
# calculate absolute arc length of constricition
# Note that we have to correct this length because the arrowtemplates are rotated
# by self.angle/2 to the left and right. Hence, if we want no constriction, i.e., for
# self.constriction = 1, we actually have a length which is approximately shorter
# by the given geometrical factor.
if self.constriction is not None:
self.constrictionlen = self.size * self.constriction * math.cos(math.radians(self.angle/2.0))
else:
# if we do not want a constriction, i.e. constriction is None, we still
# need constrictionlen for cutting the path
self.constrictionlen = self.size * 1 * math.cos(math.radians(self.angle/2.0))
def decorate(self, dp, texrunner):
if self.texrunner:
texrunner = self.texrunner
import text as textmodule
textattrs = attr.mergeattrs(
[textmodule.halign.center, textmodule.vshift.mathaxis] +
self.textattrs)
dp.ensurenormpath()
if self.arclenfrombegin is not None:
x, y = dp.path.at(dp.path.begin() + self.arclenfrombegin)
elif self.arclenfromend is not None:
x, y = dp.path.at(dp.path.end() - self.arclenfromend)
else:
# relarcpos is used, when neither arcfrombegin nor arcfromend is given
x, y = dp.path.at(self.relarclenpos * dp.path.arclen())
t = texrunner.text(x, y, self.text, textattrs)
t.linealign(self.textdist, math.cos(self.angle * math.pi / 180),
math.sin(self.angle * math.pi / 180))
dp.ornaments.insert(t)
def __init__(self, styles=[]):
attr.exclusiveattr.__init__(self, _filled)
self.styles = attr.mergeattrs(styles)
attr.checkattrs(self.styles, [style.fillstyle])
def __init__(self, styles=[]):
attr.exclusiveattr.__init__(self, _filled)
self.styles = attr.mergeattrs(styles)
attr.checkattrs(self.styles, [style.fillstyle])
