def draw(layer, instance, pen):
pen = PointToSegmentPen(pen)
for path in layer.paths:
nodes = list(path.nodes)
pen.beginPath()
if nodes:
if not path.closed:
node = nodes.pop(0)
assert node.type == "line", "Open path starts with off-curve points"
pen.addPoint(tuple(node.position), segmentType="move")
else:
# In Glyphs.app, the starting node of a closed contour is always
# stored at the end of the nodes list.
nodes.insert(0, nodes.pop())
for node in nodes:
node_type = node.type
if node_type not in ["line", "curve", "qcurve"]:
node_type = None
pen.addPoint(tuple(node.position), segmentType=node_type, smooth=node.smooth)
pen.endPath();
for component in layer.components:
componentLayer = getLayer(component.component, instance)
transform = component.transform.value
componentPen = pen.pen
if transform != DEFAULT_TRANSFORM:
componentPen = TransformPen(pen.pen, transform)
xx, xy, yx, yy = transform[:4]
if xx * yy - xy * yx < 0:
componentPen = ReverseContourPen(componentPen)
draw(componentLayer, instance, componentPen)
return pen.pen
def test_open(self):
pen = _TestSegmentPen()
ppen = PointToSegmentPen(pen)
ppen.beginPath()
ppen.addPoint((10, 10), "move")
ppen.addPoint((10, 20), "line")
ppen.endPath()
self.assertEqual("10 10 moveto 10 20 lineto endpath", repr(pen))
def test_quad_onlyOffCurvePoints(self):
pen = _TestSegmentPen()
ppen = PointToSegmentPen(pen)
ppen.beginPath()
ppen.addPoint((10, 10))
ppen.addPoint((10, 40))
ppen.addPoint((40, 40))
ppen.endPath()
self.assertEqual("10 10 10 40 40 40 None qcurveto closepath", repr(pen))
def test_quad(self):
pen = _TestSegmentPen()
ppen = PointToSegmentPen(pen)
ppen.beginPath(identifier='foo')
ppen.addPoint((10, 10), "line")
ppen.addPoint((10, 40))
ppen.addPoint((40, 40))
ppen.addPoint((10, 40), "qcurve")
ppen.endPath()
self.assertEqual("10 10 moveto 10 40 40 40 10 40 qcurveto closepath", repr(pen))
def test_cubic(self):
pen = _TestSegmentPen()
ppen = PointToSegmentPen(pen)
ppen.beginPath()
ppen.addPoint((10, 10), "line")
ppen.addPoint((10, 20))
ppen.addPoint((20, 20))
ppen.addPoint((20, 40), "curve")
ppen.endPath()
self.assertEqual("10 10 moveto 10 20 20 20 20 40 curveto closepath", repr(pen))
def test_roundTrip1(self):
tpen = _TestPointPen()
ppen = PointToSegmentPen(SegmentToPointPen(tpen))
ppen.beginPath()
ppen.addPoint((10, 10), "line")
ppen.addPoint((10, 20))
ppen.addPoint((20, 20))
ppen.addPoint((20, 40), "curve")
ppen.endPath()
self.assertEqual("beginPath() addPoint((10, 10), segmentType='line') addPoint((10, 20)) "
"addPoint((20, 20)) addPoint((20, 40), segmentType='curve') endPath()",
repr(tpen))
def test_closed_outputImpliedClosingLine(self):
tpen = _TestSegmentPen()
ppen = PointToSegmentPen(tpen, outputImpliedClosingLine=True)
ppen.beginPath()
ppen.addPoint((10, 10), "line")
ppen.addPoint((10, 20), "line")
ppen.addPoint((20, 20), "line")
ppen.endPath()
self.assertEqual(
"10 10 moveto "
"10 20 lineto "
"20 20 lineto "
"10 10 lineto " # explicit closing line
"closepath",
repr(tpen))
def test_roundTrip2(self):
tpen = _TestPointPen()
ppen = PointToSegmentPen(SegmentToPointPen(tpen))
ppen.beginPath()
ppen.addPoint((0, 651), segmentType="line")
ppen.addPoint((0, 101), segmentType="line")
ppen.addPoint((0, 101), segmentType="line")
ppen.addPoint((0, 651), segmentType="line")
ppen.endPath()
self.assertEqual(
"beginPath() "
"addPoint((0, 651), segmentType='line') "
"addPoint((0, 101), segmentType='line') "
"addPoint((0, 101), segmentType='line') "
"addPoint((0, 651), segmentType='line') "
"endPath()", repr(tpen))
def draw(self, pen):
ppen = PointToSegmentPen(pen)
startIndex = 0
points = self.getPoints()
for endIndex in self.contours:
lastTag = self.tags[endIndex]
endIndex += 1
contourTags = self.tags[startIndex:endIndex]
contourPoints = points[startIndex:endIndex]
ppen.beginPath()
for tag, (x, y) in zip(contourTags, contourPoints):
if tag == FT_CURVE_TAG_ON:
segmentType = segmentTypes[lastTag]
else:
segmentType = None
ppen.addPoint((x, y), segmentType=segmentType)
lastTag = tag
ppen.endPath()
startIndex = endIndex
def test_closed_line_overlapping_start_end_points(self):
# Test case from https://github.com/googlefonts/fontmake/issues/572.
tpen = _TestSegmentPen()
ppen = PointToSegmentPen(tpen, outputImpliedClosingLine=False)
# The last oncurve point on this closed contour is a "line" segment and has
# same coordinates as the starting point.
ppen.beginPath()
ppen.addPoint((0, 651), segmentType="line")
ppen.addPoint((0, 101), segmentType="line")
ppen.addPoint((0, 101), segmentType="line")
ppen.addPoint((0, 651), segmentType="line")
ppen.endPath()
# Check that we always output an explicit 'lineTo' segment at the end,
# regardless of the value of 'outputImpliedClosingLine', to disambiguate
# the duplicate point from the implied closing line.
self.assertEqual(
"0 651 moveto "
"0 101 lineto "
"0 101 lineto "
"0 651 lineto "
"0 651 lineto "
"closepath", repr(tpen))
