def draw_radar(self):
"""
Discards the current content and redraws all elements on the graphic scene.
"""
# decide which color to use
bg_color, line_color = Qt.black, Qt.green
self.scene.clear()
self.scene.addRect(0, 0, self.width(), self.height(), brush=QBrush(bg_color))
self._add_crosshair()
self._add_circles(self.circle_count, self.add_text_labels)
# for each measurement, draw a line
for measurement in self.measurements:
assert isinstance(measurement, Measurement)
added_time = self.added_time[measurement]
self._add_measurement(measurement.distance, measurement.angle, added_time)
# for the latest 2 measurements, draw an angle visualizer
for measurement in self.measurements[-2:]:
self._add_latest_input_line(measurement.angle)
python类black()的实例源码
def __init__(self):
QtWidgets.QWidget.__init__(self)
uic.loadUi("window.ui", self)
self.scene = QGraphicsScene(0, 0, 711, 601)
self.scene.win = self
self.view.setScene(self.scene)
self.image = QImage(710, 600, QImage.Format_Alpha8)
self.image.fill(black)
self.pen = QPen(black)
self.draw.clicked.connect(lambda: draw(self))
self.dial_x.valueChanged.connect(lambda: draw(self))
self.dial_y.valueChanged.connect(lambda: draw(self))
self.dial_z.valueChanged.connect(lambda: draw(self))
self.funcs.addItem("cos(x) * sin(z)")
self.funcs.addItem("2 * cos(x * z)")
self.funcs.addItem("exp(sin(sqrt(x^2 + z^2)))")
self.funcs.addItem("x^2 / 20 + z^2 / 20")
self.funcs.addItem("|sin(x) * sin(z)|")
def __init__(self):
QtWidgets.QWidget.__init__(self)
uic.loadUi("window.ui", self)
self.scene = Scene(0, 0, 561, 581)
self.scene.win = self
self.view.setScene(self.scene)
self.image = QImage(561, 581, QImage.Format_ARGB32_Premultiplied)
self.image.fill(Qt.white)
self.bars.clicked.connect(lambda : set_bars(self))
self.erase.clicked.connect(lambda: clean_all(self))
self.paint.clicked.connect(lambda: clipping(self))
self.rect.clicked.connect(lambda: set_rect(self))
self.ect.clicked.connect(lambda: add_bars(self))
self.lock.clicked.connect(lambda: lock(self))
self.lines = []
self.edges = []
self.clip = None
self.point_now_rect = None
self.point_now_bars = None
self.point_lock = None
self.input_bars = False
self.input_rect = False
self.pen = QPen(black)
def __init__(self):
QtWidgets.QWidget.__init__(self)
uic.loadUi("window.ui", self)
self.scene = Scene(0, 0, 561, 581)
self.scene.win = self
self.view.setScene(self.scene)
self.poly.clicked.connect(lambda : set_pol(self))
self.erase.clicked.connect(lambda: clean_all(self))
self.paint.clicked.connect(lambda: clipping(self))
self.rect.clicked.connect(lambda: set_rect(self))
self.ect.clicked.connect(lambda: add_bars(self))
self.lock.clicked.connect(lambda: lock(self))
self.clip = []
self.pol = []
self.point_now_clip = None
self.point_now_pol = None
self.point_lock_pol = None
self.point_lock_clip = None
self.input_pol = False
self.input_clip = False
self.pen = QPen(black)
def __init__(self):
QtWidgets.QWidget.__init__(self)
uic.loadUi("window.ui", self)
self.scene = QtWidgets.QGraphicsScene(0, 0, 511, 511)
self.mainview.setScene(self.scene)
self.image = QImage(511, 511, QImage.Format_ARGB32_Premultiplied)
self.pen = QPen()
self.color_line = QColor(Qt.black)
self.color_bground = QColor(Qt.white)
self.draw_once.clicked.connect(lambda: draw_once(self))
self.clean_all.clicked.connect(lambda: clear_all(self))
self.btn_bground.clicked.connect(lambda: get_color_bground(self))
self.btn_line.clicked.connect(lambda: get_color_line(self))
self.draw_centr.clicked.connect(lambda: draw_centr(self))
layout = QtWidgets.QHBoxLayout()
layout.addWidget(self.what)
layout.addWidget(self.other)
self.setLayout(layout)
self.circle.setChecked(True)
self.canon.setChecked(True)
#self.circle.toggled.connect(lambda : change_text(self))
def __init__(self):
super(VideoStyleDark, self).__init__()
palette = qApp.palette()
palette.setColor(QPalette.Window, QColor(27, 35, 38))
palette.setColor(QPalette.WindowText, QColor(234, 234, 234))
palette.setColor(QPalette.Base, QColor(27, 35, 38))
palette.setColor(QPalette.AlternateBase, QColor(12, 15, 16))
palette.setColor(QPalette.ToolTipBase, QColor(27, 35, 38))
palette.setColor(QPalette.ToolTipText, Qt.white)
palette.setColor(QPalette.Text, QColor(234, 234, 234))
palette.setColor(QPalette.Button, QColor(27, 35, 38))
palette.setColor(QPalette.ButtonText, Qt.white)
palette.setColor(QPalette.BrightText, QColor(100, 215, 222))
palette.setColor(QPalette.Link, QColor(126, 71, 130))
palette.setColor(QPalette.Highlight, QColor(126, 71, 130))
palette.setColor(QPalette.HighlightedText, Qt.white)
palette.setColor(QPalette.Disabled, QPalette.Light, Qt.black)
palette.setColor(QPalette.Disabled, QPalette.Shadow, QColor(12, 15, 16))
qApp.setPalette(palette)
def drawCellGlyph(self, painter):
if self.shouldDrawLayers:
layers = self.font.layers
for layerName in reversed(layers.layerOrder):
layer = layers[layerName]
if self.glyph.name not in layer:
continue
layerColor = None
if layer.color is not None:
layerColor = colorToQColor(layer.color)
if layerColor is None:
layerColor = Qt.black
glyph = layer[self.glyph.name]
path = glyph.getRepresentation("defconQt.QPainterPath")
painter.fillPath(path, layerColor)
else:
path = self.glyph.getRepresentation("defconQt.QPainterPath")
painter.fillPath(path, Qt.black)
def data(self, role):
if role in (Qt.EditRole, Qt.StatusTipRole):
return self.formula()
if role == Qt.DisplayRole:
return self.display()
t = str(self.display())
try:
number = int(t)
except ValueError:
number = None
if role == Qt.TextColorRole:
if number is None:
return QColor(Qt.black)
elif number < 0:
return QColor(Qt.red)
return QColor(Qt.blue)
if role == Qt.TextAlignmentRole:
if t and (t[0].isdigit() or t[0] == '-'):
return Qt.AlignRight | Qt.AlignVCenter
return super(SpreadSheetItem, self).data(role)
def updateLockStatus(self, status, reason):
indicationColor = Qt.black
if status == QCamera.Searching:
self.ui.statusbar.showMessage("Focusing...")
self.ui.lockButton.setText("Focusing...")
indicationColor = Qt.yellow
elif status == QCamera.Locked:
self.ui.lockButton.setText("Unlock")
self.ui.statusbar.showMessage("Focused", 2000)
indicationColor = Qt.darkGreen
elif status == QCamera.Unlocked:
self.ui.lockButton.setText("Focus")
if reason == QCamera.LockFailed:
self.ui.statusbar.showMessage("Focus Failed", 2000)
indicationColor = Qt.red
palette = self.ui.lockButton.palette()
palette.setColor(QPalette.ButtonText, indicationColor)
self.ui.lockButton.setPalette(palette)
def data(self, role):
if role in (Qt.EditRole, Qt.StatusTipRole):
return self.formula()
if role == Qt.DisplayRole:
return self.display()
t = str(self.display())
try:
number = int(t)
except ValueError:
number = None
if role == Qt.TextColorRole:
if number is None:
return QColor(Qt.black)
elif number < 0:
return QColor(Qt.red)
return QColor(Qt.blue)
if role == Qt.TextAlignmentRole:
if t and (t[0].isdigit() or t[0] == '-'):
return Qt.AlignRight | Qt.AlignVCenter
return super(SpreadSheetItem, self).data(role)
def updateLockStatus(self, status, reason):
indicationColor = Qt.black
if status == QCamera.Searching:
self.ui.statusbar.showMessage("Focusing...")
self.ui.lockButton.setText("Focusing...")
indicationColor = Qt.yellow
elif status == QCamera.Locked:
self.ui.lockButton.setText("Unlock")
self.ui.statusbar.showMessage("Focused", 2000)
indicationColor = Qt.darkGreen
elif status == QCamera.Unlocked:
self.ui.lockButton.setText("Focus")
if reason == QCamera.LockFailed:
self.ui.statusbar.showMessage("Focus Failed", 2000)
indicationColor = Qt.red
palette = self.ui.lockButton.palette()
palette.setColor(QPalette.ButtonText, indicationColor)
self.ui.lockButton.setPalette(palette)
def data(self, role):
if role in (Qt.EditRole, Qt.StatusTipRole):
return self.formula()
if role == Qt.DisplayRole:
return self.display()
t = str(self.display())
try:
number = int(t)
except ValueError:
number = None
if role == Qt.TextColorRole:
if number is None:
return QColor(Qt.black)
elif number < 0:
return QColor(Qt.red)
return QColor(Qt.blue)
if role == Qt.TextAlignmentRole:
if t and (t[0].isdigit() or t[0] == '-'):
return Qt.AlignRight | Qt.AlignVCenter
return super(SpreadSheetItem, self).data(role)
def paintGL(self):
GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT)
GL.glMatrixMode(GL.GL_MODELVIEW)
GL.glPushMatrix()
GL.glEnable(GLWidget.GL_MULTISAMPLE)
GL.glTranslatef( -0.25, -0.10, 0.0)
GL.glScalef(0.75, 1.15, 0.0)
GL.glRotatef(GLWidget.rot, 0.0, 0.0, 1.0)
GL.glCallList(self.list_)
GL.glPopMatrix()
GL.glPushMatrix()
GL.glDisable(GLWidget.GL_MULTISAMPLE)
GL.glTranslatef(0.25, -0.10, 0.0)
GL.glScalef(0.75, 1.15, 0.0)
GL.glRotatef(GLWidget.rot, 0.0, 0.0, 1.0)
GL.glCallList(self.list_)
GL.glPopMatrix()
GLWidget.rot += 0.2
self.qglColor(Qt.black)
self.renderText(-0.35, 0.4, 0.0, "Multisampling enabled")
self.renderText(0.15, 0.4, 0.0, "Multisampling disabled")
def initUI(self):
# QToolTip.setFont(QFont('SansSerif', 9))
self.cwidget = GUICenterWidget()
self.setCentralWidget(self.cwidget)
# self.setToolTip('This is a <b>QWidget</b> widget')
self.statusBar().showMessage('Ready')
self.center()
self.setWindowTitle('Coliform Control GUI')
self.onewiretimer = QTimer(self)
self.onewiretimer.timeout.connect(self.cwidget.onewireOn)
self.onewiretimer.start(1000)
# self.p = QPalette(self.palette())
# self.p.setColor(QPalette.Window, QColor(53, 53, 53))
# self.p.setColor(QPalette.WindowText, Qt.white)
# self.p.setColor(QPalette.AlternateBase, QColor(53, 53, 53))
# self.p.setColor(QPalette.ToolTipBase, Qt.white)
# self.p.setColor(QPalette.ToolTipText, Qt.white)
# self.p.setColor(QPalette.Button, QColor(53, 53, 53))
# self.p.setColor(QPalette.ButtonText, Qt.white)
# self.p.setColor(QPalette.BrightText, Qt.red)
# self.p.setColor(QPalette.Highlight, QColor(142, 45, 197).lighter())
# self.p.setColor(QPalette.HighlightedText, Qt.black)
# self.setPalette(self.p)
self.show()
def initUI(self):
# QToolTip.setFont(QFont('SansSerif', 9))
self.cwidget = CameraCenterWidget()
self.setCentralWidget(self.cwidget)
# self.setToolTip('This is a <b>QWidget</b> widget')
self.center()
self.setWindowTitle('Camera Control GUI')
self.statusBarTimer = QTimer(self)
self.statusBarTimer.timeout.connect(self.statusUpdate)
self.statusBarTimer.start(100)
# self.p = QPalette(self.palette())
# self.p.setColor(QPalette.Window, QColor(53, 53, 53))
# self.p.setColor(QPalette.WindowText, Qt.white)
# self.p.setColor(QPalette.AlternateBase, QColor(53, 53, 53))
# self.p.setColor(QPalette.ToolTipBase, Qt.white)
# self.p.setColor(QPalette.ToolTipText, Qt.white)
# self.p.setColor(QPalette.Button, QColor(53, 53, 53))
# self.p.setColor(QPalette.ButtonText, Qt.white)
# self.p.setColor(QPalette.BrightText, Qt.red)
# self.p.setColor(QPalette.Highlight, QColor(142, 45, 197).lighter())
# self.p.setColor(QPalette.HighlightedText, Qt.black)
# self.setPalette(self.p)
self.show()
def initUI(self):
# QToolTip.setFont(QFont('SansSerif', 9))
self.cwidget = RGBCenterWidget()
self.setCentralWidget(self.cwidget)
# self.setToolTip('This is a <b>QWidget</b> widget')
self.center()
self.setWindowTitle('RGB Sensor GUI')
self.statusBarTimer = QTimer(self)
self.statusBarTimer.timeout.connect(self.statusUpdate)
self.statusBarTimer.start(100)
# self.p = QPalette(self.palette())
# self.p.setColor(QPalette.Window, QColor(53, 53, 53))
# self.p.setColor(QPalette.WindowText, Qt.white)
# self.p.setColor(QPalette.AlternateBase, QColor(53, 53, 53))
# self.p.setColor(QPalette.ToolTipBase, Qt.white)
# self.p.setColor(QPalette.ToolTipText, Qt.white)
# self.p.setColor(QPalette.Button, QColor(53, 53, 53))
# self.p.setColor(QPalette.ButtonText, Qt.white)
# self.p.setColor(QPalette.BrightText, Qt.red)
# self.p.setColor(QPalette.Highlight, QColor(142, 45, 197).lighter())
# self.p.setColor(QPalette.HighlightedText, Qt.black)
# self.setPalette(self.p)
self.show()
def pen(self, color=Qt.black, style=Qt.SolidLine):
pen = QPen(color)
pen.setStyle(style)
return pen
def draw(win):
win.scene.clear()
win.image.fill(black)
tx = win.dial_x.value()
ty = win.dial_y.value()
tz = win.dial_z.value()
if win.funcs.currentText() == "cos(x) * sin(z)":
f = f1
if win.funcs.currentText() == "2 * cos(x * z)":
f = f2
if win.funcs.currentText() == "exp(sin(sqrt(x^2 + z^2)))":
f = f3
if win.funcs.currentText() == "x^2 / 20 + z^2 / 20":
f = f4
if win.funcs.currentText() == "|sin(x) * sin(z)|":
f = f5
win.image = float_horizon(win.scene.width(), win.scene.height(), win.x_min.value(), win.x_max.value(), win.dx.value(),
win.z_min.value(), win.z_max.value(), win.dz.value(), tx, ty, tz, f, win.image)
pix = QPixmap()
pix.convertFromImage(win.image)
win.scene.addPixmap(pix)
def add_point(point):
global w
if w.input_rect:
w.pen.setColor(black)
if w.point_now_rect is None:
w.point_now_rect = point
w.point_lock = point
add_row(w.table_rect)
i = w.table_rect.rowCount() - 1
item_x = QTableWidgetItem("{0}".format(point.x()))
item_y = QTableWidgetItem("{0}".format(point.y()))
w.table_rect.setItem(i, 0, item_x)
w.table_rect.setItem(i, 1, item_y)
else:
w.edges.append(point)
w.point_now_rect = point
add_row(w.table_rect)
i = w.table_rect.rowCount() - 1
item_x = QTableWidgetItem("{0}".format(point.x()))
item_y = QTableWidgetItem("{0}".format(point.y()))
w.table_rect.setItem(i, 0, item_x)
w.table_rect.setItem(i, 1, item_y)
item_x = w.table_rect.item(i-1, 0)
item_y = w.table_rect.item(i-1, 1)
w.scene.addLine(point.x(), point.y(), float(item_x.text()), float(item_y.text()), w.pen)
if w.input_bars:
w.pen.setColor(red)
if w.point_now_bars is None:
w.point_now_bars = point
else:
w.lines.append([[w.point_now_bars.x(), w.point_now_bars.y()],
[point.x(), point.y()]])
add_row(w.table_bars)
i = w.table_bars.rowCount() - 1
item_b = QTableWidgetItem("[{0}, {1}]".format(w.point_now_bars.x(), w.point_now_bars.y()))
item_e = QTableWidgetItem("[{0}, {1}]".format(point.x(), point.y()))
w.table_bars.setItem(i, 0, item_b)
w.table_bars.setItem(i, 1, item_e)
w.scene.addLine(w.point_now_bars.x(), w.point_now_bars.y(), point.x(), point.y(), w.pen)
w.point_now_bars = None
def __init__(self):
QtWidgets.QWidget.__init__(self)
uic.loadUi("window.ui", self)
self.scene = QtWidgets.QGraphicsScene(0, 0, 511, 511)
self.mainview.setScene(self.scene)
self.image = QImage(511, 511, QImage.Format_ARGB32_Premultiplied)
self.pen = QPen()
self.color_line = QColor(Qt.black)
self.color_bground = QColor(Qt.white)
self.draw_line.clicked.connect(lambda: draw_line(self))
self.clean_all.clicked.connect(lambda : clear_all(self))
self.btn_bground.clicked.connect(lambda: get_color_bground(self))
self.btn_line.clicked.connect(lambda: get_color_line(self))
self.draw_sun.clicked.connect(lambda: draw_sun(self))
self.cda.setChecked(True)
def get_color_line(win):
color = QtWidgets.QColorDialog.getColor(initial=Qt.black, title='???? ?????',
options=QtWidgets.QColorDialog.DontUseNativeDialog)
if color.isValid():
win.color_line = color
win.pen.setColor(color)
s = QtWidgets.QGraphicsScene(0, 0, 10, 10)
s.setBackgroundBrush(color)
win.line_color.setScene(s)
def get_color_line(win):
color = QtWidgets.QColorDialog.getColor(initial=Qt.black, title='???? ?????',
options=QtWidgets.QColorDialog.DontUseNativeDialog)
if color.isValid():
win.color_line = color
win.pen.setColor(color)
s = QtWidgets.QGraphicsScene(0, 0, 10, 10)
s.setBackgroundBrush(color)
win.line_color.setScene(s)
def selectedChanged(self, state):
if state:
self.mainRect.setPen(QPen(Qt.red))
else:
self.mainRect.setPen(QPen(Qt.black))
def __init__(self, parent=None):
super(MpvWidget, self).__init__(parent)
# Make the frame black, so that the video frame
# is distinguishable from the rest when no
# video is loaded yet
self.setStyleSheet("background-color:black;")
self.setMouseTracking(True)
self.setContextMenuPolicy(Qt.CustomContextMenu)
self.customContextMenuRequested.connect(self.contextMenu)
self.cursortimer = QTimer(self)
self.cursortimer.setSingleShot(True)
self.cursortimer.timeout.connect(hideCursor)
def paintEvent(self, event):
qp = QPainter(self)
qp.setPen(Qt.black)
size = self.size()
for i in range(1024):
x = random.randint(1, size.width()-1)
y = random.randint(1, size.height()-1)
qp.drawPoint(x, y)
def paintEvent(self, event):
qp = QPainter(self)
qp.setPen(Qt.black)
size = self.size()
# Colored rectangles
qp.setBrush(QColor(200, 0, 0))
qp.drawRect(0, 0, 100, 100)
qp.setBrush(QColor(0, 200, 0))
qp.drawRect(100, 0, 100, 100)
qp.setBrush(QColor(0, 0, 200))
qp.drawRect(200, 0, 100, 100)
# Color Effect
for i in range(0,100):
qp.setBrush(QColor(i*10, 0, 0))
qp.drawRect(10*i, 100, 10, 32)
qp.setBrush(QColor(i*10, i*10, 0))
qp.drawRect(10*i, 100+32, 10, 32)
qp.setBrush(QColor(i*2, i*10, i*1))
qp.drawRect(10*i, 100+64, 10, 32)
def draw(self, painter: QPainter) -> None:
if self.sourceIsPixmap():
pixmap, offset = self.sourcePixmap(Qt.LogicalCoordinates, QGraphicsEffect.PadToEffectiveBoundingRect)
else:
pixmap, offset = self.sourcePixmap(Qt.DeviceCoordinates, QGraphicsEffect.PadToEffectiveBoundingRect)
painter.setWorldTransform(QTransform())
painter.setBrush(Qt.black)
painter.drawRect(pixmap.rect())
painter.setOpacity(self.opacity)
painter.drawPixmap(offset, pixmap)
def paint(self, painter: QPainter, option: QStyleOptionViewItem, index: QModelIndex) -> None:
r = option.rect
pencolor = Qt.white if self.theme == 'dark' else Qt.black
if self.parent.isEnabled():
if option.state & QStyle.State_Selected:
painter.setBrush(QColor(150, 190, 78, 150))
elif option.state & QStyle.State_MouseOver:
painter.setBrush(QColor(227, 212, 232))
pencolor = Qt.black
else:
brushcolor = QColor(79, 85, 87, 175) if self.theme == 'dark' else QColor('#EFF0F1')
painter.setBrush(Qt.transparent if index.row() % 2 == 0 else brushcolor)
painter.setPen(Qt.NoPen)
painter.drawRect(r)
thumb = QIcon(index.data(Qt.DecorationRole + 1))
starttime = index.data(Qt.DisplayRole + 1)
endtime = index.data(Qt.UserRole + 1)
externalPath = index.data(Qt.UserRole + 2)
r = option.rect.adjusted(5, 0, 0, 0)
thumb.paint(painter, r, Qt.AlignVCenter | Qt.AlignLeft)
painter.setPen(QPen(pencolor, 1, Qt.SolidLine))
r = option.rect.adjusted(110, 8, 0, 0)
painter.setFont(QFont('Noto Sans UI', 10 if sys.platform == 'darwin' else 8, QFont.Bold))
painter.drawText(r, Qt.AlignLeft, 'FILENAME' if len(externalPath) else 'START')
r = option.rect.adjusted(110, 20, 0, 0)
painter.setFont(QFont('Noto Sans UI', 11 if sys.platform == 'darwin' else 9, QFont.Normal))
if len(externalPath):
painter.drawText(r, Qt.AlignLeft, self.clipText(os.path.basename(externalPath), painter))
else:
painter.drawText(r, Qt.AlignLeft, starttime)
if len(endtime) > 0:
r = option.rect.adjusted(110, 45, 0, 0)
painter.setFont(QFont('Noto Sans UI', 10 if sys.platform == 'darwin' else 8, QFont.Bold))
painter.drawText(r, Qt.AlignLeft, 'RUNTIME' if len(externalPath) else 'END')
r = option.rect.adjusted(110, 60, 0, 0)
painter.setFont(QFont('Noto Sans UI', 11 if sys.platform == 'darwin' else 9, QFont.Normal))
painter.drawText(r, Qt.AlignLeft, endtime)
if self.parent.verticalScrollBar().isVisible():
self.parent.setFixedWidth(210)
else:
self.parent.setFixedWidth(190)
UIDockerfileEditor.py 文件源码
项目：BiocImageBuilder
作者: Bioconductor-notebooks
项目源码
文件源码
阅读 24
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def _text_format(self, foreground=Qt.black, weight=QFont.Normal):
fmt = QTextCharFormat()
fmt.setForeground(QBrush(foreground))
fmt.setFontWeight(weight)
return fmt
def paint(self, painter, option, widget):
if not self.source or not self.dest:
return
# Draw the line itself.
line = QLineF(self.sourcePoint, self.destPoint)
if line.length() == 0.0:
return
painter.setPen(QPen(Qt.black, 1, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
painter.drawLine(line)
# Draw the arrows if there's enough room.
angle = math.acos(line.dx() / line.length())
if line.dy() >= 0:
angle = VGraphEdge.TwoPi - angle
sourceArrowP1 = self.sourcePoint + QPointF(math.sin(angle + VGraphEdge.Pi / 3) * self.arrowSize,
math.cos(angle + VGraphEdge.Pi / 3) * self.arrowSize)
sourceArrowP2 = self.sourcePoint + QPointF(math.sin(angle + VGraphEdge.Pi - VGraphEdge.Pi / 3) * self.arrowSize,
math.cos(angle + VGraphEdge.Pi - VGraphEdge.Pi / 3) * self.arrowSize);
destArrowP1 = self.destPoint + QPointF(math.sin(angle - VGraphEdge.Pi / 3) * self.arrowSize,
math.cos(angle - VGraphEdge.Pi / 3) * self.arrowSize)
destArrowP2 = self.destPoint + QPointF(math.sin(angle - VGraphEdge.Pi + VGraphEdge.Pi / 3) * self.arrowSize,
math.cos(angle - VGraphEdge.Pi + VGraphEdge.Pi / 3) * self.arrowSize)
painter.setBrush(Qt.black)
painter.drawPolygon(QPolygonF([line.p1(), sourceArrowP1, sourceArrowP2]))
painter.drawPolygon(QPolygonF([line.p2(), destArrowP1, destArrowP2]))
