def _draw_indicator(self, event, qp):
cx, cy, w, r = self._get_geometry(event)
pen = qp.pen()
pen.setWidth(3)
pen.setColor(Qt.black)
qp.setPen(pen)
qp.setBrush(Qt.black)
ro = r - 10
cx, cy = r + 5, r + 5
qp.translate(cx, cy)
qp.rotate(self.indicator)
path = QPainterPath()
path.moveTo(-2, 0)
path.lineTo(0, -ro)
path.lineTo(2, 0)
qp.drawPath(path)
cr = 10
cr2 = cr / 2.0
qp.drawEllipse(-cr2, -cr2, cr, cr)
def _draw_indicator(self, event, qp):
cx, cy, w, r = self._get_geometry(event)
pen = qp.pen()
pen.setWidth(3)
pen.setColor(Qt.black)
qp.setPen(pen)
qp.setBrush(Qt.black)
ro = r - 10
cx, cy = r + 5, r + 5
qp.translate(cx, cy)
qp.rotate(self.indicator)
path = QPainterPath()
path.moveTo(-2, 0)
path.lineTo(0, -ro)
path.lineTo(2, 0)
qp.drawPath(path)
cr = 10
cr2 = cr / 2.0
qp.drawEllipse(-cr2, -cr2, cr, cr)
def update_position(self):
n = len(self.control_points) - 1
x_0 = self.control_points[0].pos().x()
x_1 = self.control_points[-1].pos().x()
def p(x):
result = 0
for i in range(0, n + 1):
y_i = self.control_points[i].pos().y()
result += binom(n, i) * ((x_1 - x) / (x_1 - x_0)) ** (n - i) * ((x - x_0) / (x_1 - x_0)) ** i * y_i
return result
path = QPainterPath()
xs = linspace(0.02*SCENE_SIZE, 0.98*SCENE_SIZE, num=n*100 + 1)
path.moveTo(QPointF(xs[0], p(xs[0])))
for x in xs[1:]:
path.lineTo(QPointF(x, p(x)))
self.setPath(path)
def paintEvent(self, event):
qp = QPainter()
qp.begin(self)
qp.setRenderHint(QPainter.Antialiasing)
qp.setBrush(self.color)
qp.setPen(self.color)
rect = event.rect()
x = rect.x()
w = rect.width()
lineheight = 16
print('-------------------')
print('lefts', self.lefts)
print('rights', self.rights)
print('-------------------')
ly = self._left_y + 5
ry = self._right_y + 5
rs=self.rights[:]
# offset=1
for i, l in enumerate(self.lefts):
path = QPainterPath()
sl, el = l[0], l[-1]
try:
r=rs[i]
sr, er = r[0], r[-1]
rs.pop(i)
# offset+=1
except IndexError:
sr, er = l[-1], l[-1]-1
y = ly + lineheight * sl
y2 = ry + lineheight * sr
path.moveTo(x, y)
path.lineTo(x, y + lineheight * (el - sl + 1))
path.lineTo(x + w, y2 + lineheight * (er - sr + 1))
path.lineTo(x + w, y2)
qp.drawPath(path)
for i, r in enumerate(rs):
path = QPainterPath()
sr, er = r[0], r[-1]
# try:
l=self.lefts[i]
sl, el = r[-1], r[-1]-1
# except IndexError:
# sl, el = l[-1]+2, l[-1]+1
# print sl, el
y = ly + lineheight * (sl)
y2 = ry + lineheight * (sr)
path.moveTo(x, y)
path.lineTo(x, y + lineheight * (el - sl + 1))
path.lineTo(x + w, y2 + lineheight * (er - sr + 1))
path.lineTo(x + w, y2)
qp.drawPath(path)
qp.end()
def paintEvent(self, event):
qp = QPainter()
qp.begin(self)
qp.setRenderHint(QPainter.Antialiasing)
qp.setBrush(self.color)
qp.setPen(self.color)
rect = event.rect()
x = rect.x()
w = rect.width()
lineheight = 16
print('-------------------')
print('lefts', self.lefts)
print('rights', self.rights)
print('-------------------')
ly = self._left_y + 5
ry = self._right_y + 5
rs=self.rights[:]
# offset=1
for i, l in enumerate(self.lefts):
path = QPainterPath()
sl, el = l[0], l[-1]
try:
r=rs[i]
sr, er = r[0], r[-1]
rs.pop(i)
# offset+=1
except IndexError:
sr, er = l[-1], l[-1]-1
y = ly + lineheight * sl
y2 = ry + lineheight * sr
path.moveTo(x, y)
path.lineTo(x, y + lineheight * (el - sl + 1))
path.lineTo(x + w, y2 + lineheight * (er - sr + 1))
path.lineTo(x + w, y2)
qp.drawPath(path)
for i, r in enumerate(rs):
path = QPainterPath()
sr, er = r[0], r[-1]
# try:
l=self.lefts[i]
sl, el = r[-1], r[-1]-1
# except IndexError:
# sl, el = l[-1]+2, l[-1]+1
# print sl, el
y = ly + lineheight * (sl)
y2 = ry + lineheight * (sr)
path.moveTo(x, y)
path.lineTo(x, y + lineheight * (el - sl + 1))
path.lineTo(x + w, y2 + lineheight * (er - sr + 1))
path.lineTo(x + w, y2)
qp.drawPath(path)
qp.end()