def _get_dst_offset(self, c1):
if not self.dst_connector:
guide_path = QPainterPath(self.src_center)
guide_path.quadTo(c1, self.dst_center)
line = self._get_joint_line(guide_path).unitVector()
return QPointF(-line.dx(), -line.dy())
return {"left": QPointF(-1, 0), "bottom": QPointF(0, 1), "right": QPointF(1, 0)}[self.dst_connector.position]
def paint(self, painter, *args):
super().paint(painter, *args)
kind = self.desc.kind
painter.setPen(QPen(Qt.black, 2))
path = QPainterPath()
r = self.rect()
if kind == 'and':
path.moveTo(r.topLeft())
path.lineTo(r.center().x(), r.top())
path.quadTo(r.topRight(), QPoint(r.right(), r.height() / 2))
path.quadTo(r.bottomRight(), QPoint(r.width() / 2, r.bottom()))
path.lineTo(r.bottomLeft())
path.closeSubpath()
elif kind == 'or':
path.moveTo(r.topLeft())
path.lineTo(r.width() / 4, r.top())
path.quadTo(QPoint(r.width() / 4 * 3, r.top()),
QPoint(r.right(),
r.height() / 2))
path.quadTo(QPoint(r.width() / 4 * 3, r.bottom()),
QPoint(r.width() / 4, r.bottom()))
path.lineTo(r.bottomLeft())
path.quadTo(r.center(), r.topLeft())
painter.drawPath(path)
def _make_path(self):
if len(self.coords) < 3:
return super()._make_path()
# raise ValueError("At least 3 coordinates are required.") # programming error - don't use this class for a simple segment!
path = QPainterPath(self.coords[0])
for i in range(len(self.coords) - 1):
pt0 = self._get_line_start(i)
if i == 0:
path.lineTo(pt0)
else:
path.quadTo(self.coords[i], pt0)
pt1 = self._get_line_end(i)
path.lineTo(pt1)
path.lineTo(self.coords[-1])
return path
def update_line(self):
overlapping_arcs = [
arc for arc in self.rel_item.arc_items
if arc.obj_item == self.obj_item
]
count = len(overlapping_arcs)
path = QPainterPath(self.rel_item.pos())
if count == 1:
path.lineTo(self.obj_item.pos())
else:
rank = overlapping_arcs.index(self)
line = QLineF(self.rel_item.pos(), self.obj_item.pos())
line.setP1(line.center())
line = line.normalVector()
line.setLength(self._width * count)
line.setP1(2 * line.p1() - line.p2())
t = rank / (count - 1)
ctrl_point = line.pointAt(t)
path.quadTo(ctrl_point, self.obj_item.pos())
self.setPath(path)
def test_bezier_resolution_after_transform(self, p, opd):
# Two beziers which are the same size after transformation should be
# interpolated to the same level of detail
path = QPainterPath()
path.moveTo(0, 0)
path.quadTo(100, 10, 10, 20)
p.drawPath(path)
p.scale(10, 10)
path = QPainterPath()
path.moveTo(0, 0)
path.quadTo(10, 1, 1, 2)
p.drawPath(path)
lines = opd.getOutlines()
assert len(lines) == 2
colour_0, width_0, line_0 = lines[0]
colour_1, width_1, line_1 = lines[1]
assert len(line_0) > 2
assert len(line_0) == len(line_1)
def test_bezier_resolution(self, p, opd):
# Two beziers drawn at different sizes should be interpolated to
# different levels of detail
path = QPainterPath()
path.moveTo(0, 0)
path.quadTo(100, 10, 10, 20)
p.drawPath(path)
path = QPainterPath()
path.moveTo(0, 0)
path.quadTo(10, 1, 1, 2)
p.drawPath(path)
lines = opd.getOutlines()
assert len(lines) == 2
colour_0, width_0, line_0 = lines[0]
colour_1, width_1, line_1 = lines[1]
assert len(line_0) > 2
assert len(line_1) > 2
assert len(line_0) > len(line_1)
