def test_rotate(self):
t = Transform()
assert t.rotate(math.pi / 2) == Transform(0, 1, -1, 0, 0, 0)
t = Transform()
assert t.rotate(-math.pi / 2) == Transform(0, -1, 1, 0, 0, 0)
t = Transform()
assert tuple(t.rotate(math.radians(30))) == pytest.approx(
tuple(Transform(0.866025, 0.5, -0.5, 0.866025, 0, 0)))
def test_rotate(self):
t = Transform()
assert t.rotate(math.pi / 2) == Transform(0, 1, -1, 0, 0, 0)
t = Transform()
assert t.rotate(-math.pi / 2) == Transform(0, -1, 1, 0, 0, 0)
t = Transform()
assert tuple(t.rotate(math.radians(30))) == pytest.approx(
tuple(Transform(0.866025, 0.5, -0.5, 0.866025, 0, 0)))
def distributeOnPath(self, path, offset=0, cc=None, notfound=None):
if cc:
cutter = cc
else:
cutter = CurveCutter(path)
limit = len(self.pens)
for idx, p in enumerate(self.pens):
f = p.getFrame()
bs = f.y
ow = offset + f.x + f.w / 2
#if ow < 0:
# if notfound:
# notfound(p)
if ow > cutter.length:
limit = min(idx, limit)
else:
_p, tangent = cutter.subsegmentPoint(end=ow)
x_shift = bs * math.cos(math.radians(tangent))
y_shift = bs * math.sin(math.radians(tangent))
t = Transform()
t = t.translate(_p[0] + x_shift - f.x, _p[1] + y_shift - f.y)
t = t.translate(f.x, f.y)
t = t.rotate(math.radians(tangent - 90))
t = t.translate(-f.x, -f.y)
t = t.translate(-f.w * 0.5)
p.transform(t)
if limit < len(self.pens):
self.pens = self.pens[0:limit]
return self
def getKernel(radius, amplitude=1, depth=50, angle=0):
"""
>>> a = getKernel(5)
>>> a[(0,0)]
0.03662899097662087
>>> a[(2,0)]
0.02371649522786113
"""
t = Transform()
t = t.rotate(angle)
lines = getCircle(0, 0, radius)
sigma = (radius+1) / math.sqrt(2*math.log(depth))
grid = {}
total = 0
for y, (xMin, xMax) in lines.items():
for x in range(xMin, xMax+1, 1):
g = xyGaussian(x,y, amplitude, 0, 0, sigma, sigma)
grid[(x,y)]=grid.get((x,y), 0)+g
total += g
# scale the amplitude based on the total
grid = {k: float(v)/total for k, v in grid.items()}
# rotate the grid
grid = grid
new = {}
for k, v in grid.items():
k_ = t.transformPoint(k)
new[k_] = v
grid = new
return grid
def rotate(self, degrees, point=None):
t = Transform()
if not point:
point = self.point("C")
t = t.translate(point.x, point.y)
t = t.rotate(math.radians(degrees))
t = t.translate(-point.x, -point.y)
return self.transform(t)
def makeTransform(x, y, rotation, scalex, scaley, tcenterx, tcentery, scaleUsesCenter=True):
rotation = math.radians(rotation)
if not scaleUsesCenter:
tcenterx *= scalex
tcentery *= scaley
t = Transform()
t = t.translate(x + tcenterx, y + tcentery)
t = t.rotate(rotation)
t = t.translate(-tcenterx, -tcentery)
t = t.scale(scalex, scaley)
else:
t = Transform()
t = t.translate(x + tcenterx, y + tcentery)
t = t.rotate(rotation)
t = t.scale(scalex, scaley)
t = t.translate(-tcenterx, -tcentery)
return t
def makeTransform(x, y, rotation, scalex, scaley, tcenterx, tcentery):
rotation = math.radians(rotation)
t = Transform()
t = t.translate(x + tcenterx, y + tcentery)
t = t.rotate(rotation)
t = t.scale(scalex, scaley)
t = t.translate(-tcenterx, -tcentery)
return t
def rotate(self, degrees, point=None):
"""Rotate this shape by a degree (in 360-scale, counterclockwise)."""
t = Transform()
if not point:
point = self.bounds().point("C") # maybe should be getFrame()?
t = t.translate(point.x, point.y)
t = t.rotate(math.radians(degrees))
t = t.translate(-point.x, -point.y)
return self.transform(t, transformFrame=False)
def makeTransformVarCo(x, y, rotation, scalex, scaley, skewx, skewy, tcenterx,
tcentery):
t = Transform()
t = t.translate(x + tcenterx, y + tcentery)
t = t.rotate(math.radians(rotation))
t = t.scale(scalex, scaley)
t = t.skew(math.radians(skewx), math.radians(skewy))
t = t.translate(-tcenterx, -tcentery)
return t
def rotate(self, degrees, point=None):
if Transform:
t = Transform()
if not point:
point = self.mid
t = t.translate(point.x, point.y)
t = t.rotate(math.radians(degrees))
t = t.translate(-point.x, -point.y)
return self.transform(t)
else:
raise Exception("fontTools not installed")
def rotate(self, angle, center=(0, 0)):
t = Transform()
t = t.rotate(math.radians(angle))
self.transform(t, center=center)
from fontTools.misc.transform import Transform
size(200, 200)
with savedState():
rotate(15, center=(50, 50))
rect(25, 25, 50, 50)
with savedState():
scale(1.2, center=(150, 50))
rect(125, 25, 50, 50)
with savedState():
skew(15, 10, center=(50, 150))
rect(25, 125, 50, 50)
with savedState():
t = Transform()
t = t.scale(0.9, 1.1)
t = t.rotate(0.2)
transform(t, center=(150, 150))
rect(125, 125, 50, 50)
