def _lineTo(self, pt):
if self.filterDoubles:
if pt == self.currentPt:
return
hits = splitLine(self.currentPt, pt, self.value, self.isHorizontal)
if len(hits) > 1:
# result will be 2 tuples of 2 coordinates
# first two points: start to intersect
# second two points: intersect to end
# so, second point in first tuple is the intersect
# then, the first coordinate of that point is the x.
if self.contourIndex not in self.hits:
self.hits[self.contourIndex] = []
if self.isHorizontal:
self.hits[self.contourIndex].append(round(hits[0][-1][0], 4))
else:
self.hits[self.contourIndex].append(round(hits[0][-1][1], 4))
if self.isHorizontal and pt[1] == self.value:
# it could happen
if self.contourIndex not in self.hits:
self.hits[self.contourIndex] = []
self.hits[self.contourIndex].append(pt[0])
elif (not self.isHorizontal) and (pt[0] == self.value):
# it could happen
if self.contourIndex not in self.hits:
self.hits[self.contourIndex] = []
self.hits[self.contourIndex].append(pt[1])
self.currentPt = pt
def _lineTo(self, pt):
if self.filterDoubles:
if pt == self.currentPt:
return
hits = splitLine(self.currentPt, pt, self.value, self.isHorizontal)
if len(hits) > 1:
# result will be 2 tuples of 2 coordinates
# first two points: start to intersect
# second two points: intersect to end
# so, second point in first tuple is the intersect
# then, the first coordinate of that point is the x.
if self.contourIndex not in self.hits:
self.hits[self.contourIndex] = []
if self.isHorizontal:
self.hits[self.contourIndex].append(round(hits[0][-1][0], 4))
else:
self.hits[self.contourIndex].append(round(hits[0][-1][1], 4))
if self.isHorizontal and pt[1] == self.value:
# it could happen
if self.contourIndex not in self.hits:
self.hits[self.contourIndex] = []
self.hits[self.contourIndex].append(pt[0])
elif (not self.isHorizontal) and (pt[0] == self.value):
# it could happen
if self.contourIndex not in self.hits:
self.hits[self.contourIndex] = []
self.hits[self.contourIndex].append(pt[1])
self.currentPt = pt
def append_point_coordinate_line(contour, rpoints, where, is_horizontal):
""" Appends RPoint object to line(RSegment object) by horizontal or vertical line.
Args:
contour:: RContour
The RContour object that you want to add RPoint object.
rpoints:: list
A list of RPoint objects. It should be containing startpoint and endpoint of line.
The order of start and end follows a index of contour.points.
where:: int or float
The coordinate value of line(x value if uses vertical line otherwise y value).
is_horizontal:: bool
If this is True, uses horizontal line(coordinate value of y).
Otherwise uses vertical line(coordinate value of x).
Raises:
arguments value error:: ValueError
If not found target segment in contour, raises this error.
This can be occured when the rpoints(RPoint objects) are not in the contour.points.
splitting error:: AssertionError
If function of splitting is not done properly, raises this error.
For example, if it split one line(or curve) but result is also one line(or curve).
"""
points = _r2t(rpoints)
new_line = splitLine(points[0], points[1], where, is_horizontal)
assert (len(new_line) > 1)
segment_index = _segment_index_of(contour, rpoints[1])
if segment_index is None:
raise ValueError('Not found target segment in contour.')
contour.insertSegment(segment_index, 'line', [new_line[0][1]])
contour.round()
def test_splitLine():
assert splitLine((0, 0), (100, 100), where=50,
isHorizontal=True) == [((0, 0), (50.0, 50.0)),
((50.0, 50.0), (100, 100))]
assert splitLine((0, 0), (100, 100), where=100,
isHorizontal=True) == [((0, 0), (100, 100))]
assert splitLine((0, 0), (100, 100), where=0,
isHorizontal=True) == [((0, 0), (0, 0)),
((0, 0), (100, 100))]
assert splitLine((0, 0), (100, 100), where=0,
isHorizontal=False) == [((0, 0), (0, 0)),
((0, 0), (100, 100))]
assert splitLine((100, 0), (0, 0), where=50,
isHorizontal=False) == [((100, 0), (50, 0)),
((50, 0), (0, 0))]
assert splitLine((0, 100), (0, 0), where=50,
isHorizontal=True) == [((0, 100), (0, 50)),
((0, 50), (0, 0))]
assert splitLine((0, 100), (100, 100), where=50,
isHorizontal=True) == [((0, 100), (100, 100))]
def test_splitLine():
assert splitLine(
(0, 0), (100, 100), where=50, isHorizontal=True
) == [((0, 0), (50.0, 50.0)), ((50.0, 50.0), (100, 100))]
assert splitLine(
(0, 0), (100, 100), where=100, isHorizontal=True
) == [((0, 0), (100, 100))]
assert splitLine(
(0, 0), (100, 100), where=0, isHorizontal=True
) == [((0, 0), (0, 0)), ((0, 0), (100, 100))]
assert splitLine(
(0, 0), (100, 100), where=0, isHorizontal=False
) == [((0, 0), (0, 0)), ((0, 0), (100, 100))]
assert splitLine(
(100, 0), (0, 0), where=50, isHorizontal=False
) == [((100, 0), (50, 0)), ((50, 0), (0, 0))]
assert splitLine(
(0, 100), (0, 0), where=50, isHorizontal=True
) == [((0, 100), (0, 50)), ((0, 50), (0, 0))]
assert splitLine(
(0, 100), (100, 100), where=50, isHorizontal=True
) == [((0, 100), (100, 100))]