def test_cf1(self):
nodes = [
Point(122, 102),
Point(35, 200),
Point(228, 145),
Point(190, 46)
]
t = CurveFit._leftTangent(nodes)
self.assertAlmostEqual(t.x, -0.663890062102)
self.assertAlmostEqual(t.y, 0.747830184896)
t = CurveFit._rightTangent(nodes)
self.assertAlmostEqual(t.x, -0.3583470773350791)
self.assertAlmostEqual(t.y, -0.9335884383203376)
def fromPoints(self,
points,
error=50.0,
cornerTolerance=20.0,
maxSegments=20):
"""Fit a poly-bezier curve to the points given. This operation should be familiar
from 'pencil' tools in a vector drawing application: the application samples points
where your mouse pointer has been dragged, and then turns the sketch into a Bezier
path. The goodness of fit can be controlled by tuning the `error` parameter. Corner
detection can be controlled with `cornerTolerance`.
Here are some points fit with `error=100.0`:
.. figure:: curvefit1.png
:scale: 75 %
:alt: curvefit1
And with `error=10.0`:
.. figure:: curvefit2.png
:scale: 75 %
:alt: curvefit1
"""
from beziers.utils.curvefitter import CurveFit
segs = CurveFit.fitCurve(points, error, cornerTolerance, maxSegments)
path = BezierPath()
path.closed = False
path.activeRepresentation = SegmentRepresentation(path, segs)
return path
def fromPoints(self, points, error = 50.0, cornerTolerance = 20.0, maxSegments = 20):
"""Fit a poly-bezier curve to the points given. This operation should be familiar
from 'pencil' tools in a vector drawing application: the application samples points
where your mouse pointer has been dragged, and then turns the sketch into a Bezier
path. The goodness of fit can be controlled by tuning the `error` parameter. Corner
detection can be controlled with `cornerTolerance`.
Here are some points fit with `error=100.0`:
.. figure:: curvefit1.png
:scale: 75 %
:alt: curvefit1
And with `error=10.0`:
.. figure:: curvefit2.png
:scale: 75 %
:alt: curvefit1
"""
from beziers.utils.curvefitter import CurveFit
segs = CurveFit.fitCurve(points, error, cornerTolerance, maxSegments)
path = BezierPath()
path.closed = False
path.activeRepresentation = SegmentRepresentation(path,segs)
return path