def draw_event(self):
rnd = random.Random()
if not self.isDrawn:
item = QtWidgets.QGraphicsEllipseItem(*self.get_params())
self.graphicsScene.addItem(item)
item = QtWidgets.QGraphicsEllipseItem(*self.get_params())
self.graphicsScene.addItem(item)
item = QtWidgets.QGraphicsEllipseItem(*self.get_params())
item.setStartAngle(90)
item.setSpanAngle(random.randrange(10, 100))
self.graphicsScene.addItem(item)
item = QtWidgets.QGraphicsEllipseItem(*self.get_params())
item.setStartAngle(90 * 20)
item.setSpanAngle(random.randrange(10, 100) * 20)
self.graphicsScene.addItem(item)
item = QtWidgets.QGraphicsRectItem(*self.get_params())
self.graphicsScene.addItem(item)
item = QtWidgets.QGraphicsRectItem(*self.get_params())
self.graphicsScene.addItem(item)
item = QtWidgets.QGraphicsLineItem()
item.setLine(
random.randrange(
0,
self.graphicsView.frameGeometry().width() - MAX_WIDTH),
random.randrange(
0,
self.graphicsView.frameGeometry().height() - MAX_HEIGHT),
random.randrange(
0,
self.graphicsView.frameGeometry().width() - MAX_WIDTH),
random.randrange(
0,
self.graphicsView.frameGeometry().height() - MAX_HEIGHT))
self.graphicsScene.addItem(item)
item = QtWidgets.QGraphicsLineItem()
item.setLine(
random.randrange(
0,
self.graphicsView.frameGeometry().width() - MAX_WIDTH),
random.randrange(
0,
self.graphicsView.frameGeometry().height() - MAX_HEIGHT),
random.randrange(
0,
self.graphicsView.frameGeometry().width() - MAX_WIDTH),
random.randrange(
0,
self.graphicsView.frameGeometry().height() - MAX_HEIGHT))
self.graphicsScene.addItem(item)
self.isDrawn = True
def __init__(self, parent):
super(VideoRender, self).__init__()
self.main_window = parent
self.setAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter)
self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
self.size_adjusted = False
self.ratio = 1
self.setAcceptDrops(True)
# Config QGraphics objects
self.scene = QtWidgets.QGraphicsScene(self)
self.setScene(self.scene)
# Frame
self.frame = None
self.scene_frame = QtWidgets.QGraphicsPixmapItem()
# Current Detection Selection
self.init_point = QtCore.QPoint()
self.end_point = QtCore.QPoint()
self.drawing = False
self.current_selection = QtWidgets.QGraphicsRectItem()
self.brush_current = QtGui.QBrush(QtGui.QColor(10, 10, 100, 120))
# Detections
self.detection = []
self.detection_objects = [] # List of GraphicsRectItem objects
self.brush_detection = QtGui.QBrush(QtGui.QColor(100, 10, 10, 120))
self.init()
def __init__(self,
frame: np.array = None,
show=None,
show_box=True,
*args,
**kwargs):
super(ConfMapsPlot, self).__init__(*args, **kwargs)
self.frame = frame
self.show_box = show_box
self.rect = QtCore.QRectF(0, 0, self.frame.shape[1],
self.frame.shape[0])
if self.show_box:
QtWidgets.QGraphicsRectItem(self.rect, parent=self).setPen(
QtGui.QPen("yellow"))
for channel in range(self.frame.shape[2]):
if show is None or channel in show:
color_map = h5_colors[channel % len(h5_colors)]
# Add QGraphicsPixmapItem as child object
ConfMapPlot(confmap=self.frame[..., channel],
color=color_map,
parent=self)
def columns_setup(self):
'''
only works in three conditions:
1. starting app
2. spin amount
3. state 2 → 0, press btnSort when it's text is new sort
functions:
1. reset display labels and their correspoing class variables
2. reset scene and render it again with correspoing variables
'''
# reset label
self.ui.labTime.setText('0')
self.ui.labComparisons.setText('0')
# reset columns
self.scene.clear()
self.col_heights.clear()
self.col_items.clear()
# compute width of all columns
col_width = self.scene_width / self.col_amount
# create heights for all columns in scene
height_increment = self.scene_height / self.col_amount
height = 0
for i in range(self.col_amount):
height += height_increment
self.col_heights.append(height)
# shuffle heights
random.shuffle(self.col_heights)
# apply columns to scene
xpos = 0
for i in range(self.col_amount):
ypos = self.scene_height - self.col_heights[i]
rect_item = QtWidgets.QGraphicsRectItem()
# column location in scene
rect_item.setRect(xpos, ypos, col_width, self.col_heights[i])
# column background color
rect_item.setBrush(QtGui.QBrush(QtGui.Qt.red))
# column border width
if self.col_amount <= 200:
rect_item.setPen(QtGui.QPen(QtGui.Qt.black, 2))
elif 200 < self.col_amount <= 300:
rect_item.setPen(QtGui.QPen(QtGui.Qt.black, 1))
else:
rect_item.setPen(QtGui.Qt.NoPen)
# add item to scene
self.scene.addItem(rect_item)
self.col_items.append(rect_item)
# update xpos
xpos += col_width
def __init__(self, *args, **kwargs):
self._widget_size = 200
self._pen_width = 4
self._box_size = None
self._scale = None
box_pen = QtGui.QPen(QtGui.QColor("blue"), self._pen_width)
box_pen.setCosmetic(True)
self.box = QtWidgets.QGraphicsRectItem()
self.box.setPen(box_pen)
super(ReceptiveFieldImageWidget, self).__init__(*args, **kwargs)
self.setFixedSize(self._widget_size, self._widget_size)
self.scene.addItem(self.box)
def setupScene(self):
self.m_scene.setSceneRect(-300, -200, 600, 460)
linearGrad = QtGui.QLinearGradient(QtCore.QPointF(-100, -100),
QtCore.QPointF(100, 100))
linearGrad.setColorAt(0, QtGui.QColor(255, 255, 255))
linearGrad.setColorAt(1, QtGui.QColor(192, 192, 255))
self.setBackgroundBrush(linearGrad)
radialGrad = QtGui.QRadialGradient(30, 30, 30)
radialGrad.setColorAt(0, QtCore.Qt.yellow)
radialGrad.setColorAt(0.2, QtCore.Qt.yellow)
radialGrad.setColorAt(1, QtCore.Qt.transparent)
pixmap = QtGui.QPixmap(60, 60)
pixmap.fill(QtCore.Qt.transparent)
painter = QtGui.QPainter(pixmap)
painter.setPen(QtCore.Qt.NoPen)
painter.setBrush(radialGrad)
painter.drawEllipse(0, 0, 60, 60)
painter.end()
self.m_lightSource = self.m_scene.addPixmap(pixmap)
self.m_lightSource.setZValue(2)
for i in range(-2, 3):
for j in range(-2, 3):
if (i + j) & 1:
item = QtWidgets.QGraphicsEllipseItem(0, 0, 50, 50)
else:
item = QtWidgets.QGraphicsRectItem(0, 0, 50, 50)
item.setPen(QtGui.QPen(QtCore.Qt.black, 1))
item.setBrush(QtGui.QBrush(QtCore.Qt.white))
effect = QtWidgets.QGraphicsDropShadowEffect(self)
effect.setBlurRadius(8)
item.setGraphicsEffect(effect)
item.setZValue(1)
item.setPos(i * 80, j * 80)
self.m_scene.addItem(item)
self.m_items.append(item)
def draw_creatures(self, creature_or_predator, creature):
"""Fill the cell at grid location (x, y)
"""
x = creature.x_position
y = creature.y_position
world_left = 0
world_top = 0
world_right = self.simulation_window_groupbox.size().width()
world_bottom = self.simulation_window_groupbox.size().height()
creature_x_in_world = int(((world_right - world_left) * x) +
world_left)
creature_y_in_world = int(((world_bottom - world_top) * y) + world_top)
item = QtWidgets.QGraphicsRectItem(creature_x_in_world,
creature_y_in_world, 10, 10)
if creature_or_predator:
item.setBrush(QtGui.QBrush(QtCore.Qt.blue))
else:
item.setBrush(QtGui.QBrush(QtCore.Qt.red))
self.scene.addItem(item)
def update_frame(self):
""""Update the frame and all the detection squares"""
self.scene.clear()
# Display image/frame
if self.frame:
self.scene_frame = QtWidgets.QGraphicsPixmapItem(self.frame)
self.scene.addItem(self.scene_frame)
self.fitInView(self.scene_frame)
# Draw new detection square
if self.drawing:
self.current_selection = QtWidgets.QGraphicsRectItem(
QtCore.QRect(self.init_point, self.end_point))
self.current_selection.setBrush(self.brush_current)
self.scene.addItem(self.current_selection)
# Detect all objects according to the Track List
self.detection_objects = []
for element in self.detection:
d = CustomWidget.GraphicsRectItem(element.rect(self.ratio))
d.setBrush(self.brush_detection)
d.set_edit_mode(self.main_window.controller.edit_mode)
self.scene.addItem(d)
self.detection_objects.append(d)
if self.handle_selected is None or handle == self.handle_selected:
painter.drawEllipse(rect)
if __name__ == "__main__":
app = qtw.QApplication(sys.argv)
main = qtw.QGraphicsView()
main.setFixedSize(700, 700)
main.setAlignment(qtc.Qt.AlignTop | qtc.Qt.AlignLeft) # start at 0, 0
main.setSizePolicy(qtw.QSizePolicy.Fixed, qtw.QSizePolicy.Fixed)
main.setHorizontalScrollBarPolicy(qtc.Qt.ScrollBarAlwaysOff)
main.setVerticalScrollBarPolicy(qtc.Qt.ScrollBarAlwaysOff)
# main.setSceneRect(0, 0, 1000, 1000)
# main.setFixedSize(1000, 1000)
rect = [0, 0, 1, 1]
scene = VideoBufferScene()
item = qtw.QGraphicsRectItem(0, 0, 500, 500)
scene.addItem(item)
rect2 = [0.1, 0.2, 1, 1]
item2 = GraphicsRectItem(0, 0, *rect2, 300, 300)
scene.addItem(item2)
# scene.rect_changed.connect(lambda packet: print(packet.data))
main.setScene(scene)
main.show()
sys.exit(app.exec_())
myPath.arcTo(QtCore.QRectF(50, -25, 50, 50), 90, -90)
myPath.closeSubpath()
painter.drawPath(myPath)
def timerHandler():
increment = 15
blade1.setAngle(blade1.angle+increment)
blade2.setAngle(blade2.angle+increment)
blade3.setAngle(blade3.angle+increment)
view.viewport().repaint()
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
scene = QtWidgets.QGraphicsScene(QtCore.QRectF(-100, -100, 200, 200))
scene.addItem(QtWidgets.QGraphicsRectItem(scene.sceneRect()))
centerItem = QtWidgets.QGraphicsEllipseItem(QtCore.QRectF(-10, -10, 20, 20))
centerItem.setPen(QtGui.QPen(QtCore.Qt.darkBlue))
centerItem.setBrush(QtCore.Qt.green)
centerItem.setZValue(2)
scene.addItem(centerItem)
circle1 = QtWidgets.QGraphicsEllipseItem(QtCore.QRectF(-75, -75, 150, 150))
circle1.setPen(QtGui.QPen(QtCore.Qt.black))
circle1.setBrush(QtCore.Qt.NoBrush)
# scene.addItem(circle1)
blade1 = FanBlade()
scene.addItem(blade1)
kineticPix = QtGui.QPixmap(':/images/kinetic.png')
bgPix = QtGui.QPixmap(':/images/Time-For-Lunch-2.jpg')
scene = QtWidgets.QGraphicsScene(-350, -350, 700, 700)
items = []
for i in range(64):
item = Pixmap(kineticPix)
item.pixmap_item.setOffset(-kineticPix.width() / 2,
-kineticPix.height() / 2)
item.pixmap_item.setZValue(i)
items.append(item)
scene.addItem(item.pixmap_item)
# Buttons.
buttonParent = QtWidgets.QGraphicsRectItem()
ellipseButton = Button(QtGui.QPixmap(':/images/ellipse.png'), buttonParent)
figure8Button = Button(QtGui.QPixmap(':/images/figure8.png'), buttonParent)
randomButton = Button(QtGui.QPixmap(':/images/random.png'), buttonParent)
tiledButton = Button(QtGui.QPixmap(':/images/tile.png'), buttonParent)
centeredButton = Button(QtGui.QPixmap(':/images/centered.png'),
buttonParent)
ellipseButton.setPos(-100, -100)
figure8Button.setPos(100, -100)
randomButton.setPos(0, 0)
tiledButton.setPos(-100, 100)
centeredButton.setPos(100, 100)
scene.addItem(buttonParent)
buttonParent.setTransform(QtGui.QTransform().scale(0.75, 0.75))
def buildBackgroundRect(self): """return a single qrect below all other scene items with a checker pattern """ rect = QtWidgets.QGraphicsRectItem(self.sceneRect()) rect.setBrush()
def main(): app = QtWidgets.QApplication(sys.argv) margin = 10 scene = QtWidgets.QGraphicsScene(QtCore.QRectF(-200-margin/2, -200-margin/2, 400+margin, 400+margin)) rect = QtWidgets.QGraphicsRectItem(scene.sceneRect().adjusted(1, 1, -1, -1)) rect.setPen(QtGui.QPen(QtCore.Qt.red, 1)) # scene.addItem(rect) radius = 200 diameter = radius * 2 ellipseItem = QtWidgets.QGraphicsEllipseItem(QtCore.QRectF(-200, -200, diameter, diameter)) ellipseItem.setPen(QtGui.QPen(QtCore.Qt.darkBlue)) # ellipseItem.setBrush(QtCore.Qt.blue) scene.addItem(ellipseItem) origin = QtCore.QPointF(0, 0) p1 = None p2 = None angle = 270 line1 = None line2 = None conePath = QtGui.QPainterPath() def drawLine(): nonlocal p1 nonlocal angle nonlocal line1 nonlocal line2 nonlocal origin if p1 == None: angle2 = angle + 20 p1 = QtCore.QPointF(radius * math.cos(angle * math.pi / 180.0), radius * math.sin(angle * math.pi / 180.0)) p2 = QtCore.QPointF(radius * math.cos(angle2 * math.pi / 180.0), radius * math.sin(angle2 * math.pi / 180.0)) line1 = QtWidgets.QGraphicsLineItem(p1.x(), p1.y(), 0, 0) line2 = QtWidgets.QGraphicsLineItem(0, 0, p2.x(), p2.y()) # conePath.moveTo(line1) # conePath.lineTo(line2) # conePath.closeSubpath() # scene.addPath(conePath) scene.addItem(line1) scene.addItem(line2) else: scene.removeItem(line1) scene.removeItem(line2) # scene.removeItem(conePath) angle += 1 angle2 = angle + 20 p1 = QtCore.QPointF(radius * math.cos(angle * math.pi / 180.0), radius * math.sin(angle * math.pi / 180.0)) p2 = QtCore.QPointF(radius * math.cos(angle2 * math.pi / 180.0), radius * math.sin(angle2 * math.pi / 180.0)) line1 = QtWidgets.QGraphicsLineItem(p1.x(), p1.y(), 0, 0) line2 = QtWidgets.QGraphicsLineItem(0, 0, p2.x(), p2.y()) # conePath.moveTo(line1) # conePath.lineTo(line2) # conePath.closeSubpath() # scene.addPath(conePath) scene.addItem(line1) scene.addItem(line2) view = QtWidgets.QGraphicsView() view.setRenderHint(QtGui.QPainter.Antialiasing) view.setScene(scene) view.show() # drawLine() timer = QtCore.QTimer() timer.setInterval(100) timer.timeout.connect(drawLine) timer.start() sys.exit(app.exec_())
scene = QtWidgets.QGraphicsScene(
QtCore.QRectF(0, 0, sceneWidth, sceneHeight))
rect = scene.sceneRect()
gridLines = list()
drawGrid(sceneWidth, sceneHeight, scene)
line1 = QtWidgets.QGraphicsLineItem(sceneWidth / 2, 0, sceneWidth / 2,
sceneHeight)
line1.setPen(QtGui.QPen(QtCore.Qt.black, 2))
scene.addItem(line1)
line2 = QtWidgets.QGraphicsLineItem(0, sceneHeight / 2, sceneWidth,
sceneHeight / 2)
line2.setPen(QtGui.QPen(QtCore.Qt.red, 2))
scene.addItem(line2)
line3 = QtWidgets.QGraphicsLineItem(-50, -50, sceneWidth, sceneHeight)
line3.setPen(QtGui.QPen(QtCore.Qt.blue, 2))
line3.setFlag(QtWidgets.QGraphicsItem.ItemClipsChildrenToShape, True)
scene.addItem(line3)
scene.addItem(QtWidgets.QGraphicsRectItem(rect))
# Create a graphics view
view = QtWidgets.QGraphicsView()
view.setScene(scene)
view.show()
sys.exit(app.exec_())
