我们从Python开源项目中，提取了以下15个代码示例，用于说明如何使用PyQt4.QtGui.QPolygonF()。
def setPolygon(self): '''Calculate position and rotation of the arc arrow head.''' rotDeg = 0 xlength = self.pos1.x() - self.pos2.x() ylength = self.pos1.y() - self.pos2.y() d = math.sqrt( math.pow( xlength , 2) + math.pow( ylength , 2) ) if d > 0: beta = math.acos( xlength / d ) rotDeg = math.degrees( beta ) self.arrowPolygonObject.setPolygon( QtGui.QPolygonF( [ QtCore.QPointF( (self.pos2.x() -10), (self.pos2.y() +5)), QtCore.QPointF( (self.pos2.x() -10) , (self.pos2.y() -5)), QtCore.QPointF( self.pos2.x() , self.pos2.y()) ] ) ) self.arrowPolygonObject.setBrush( QtGui.QBrush(QtCore.Qt.black) ) """ self.angle()!!!!!!!!!""" # self.arcLinePolygon.angle() # self.arcLinePolygon.rotate(rotDeg) # self.arcLinePolygon.setPos( self.pos2 ) #------------------------------------------------------------------------------------------------
def setPolygon(self): rotDeg = 0 xlength = self.pos1.x() - self.pos2.x() ylength = self.pos1.y() - self.pos2.y() d = math.sqrt( math.pow( xlength , 2) + math.pow( ylength , 2) ) if d > 0: beta = math.acos( xlength / d ) rotDeg = math.degrees( beta ) self.arcLinePolygon.setPolygon( QtGui.QPolygonF( [ QtCore.QPointF( (self.pos2.x() -10), (self.pos2.y() +5)), QtCore.QPointF( (self.pos2.x() -10) , (self.pos2.y() -5)), QtCore.QPointF( self.pos2.x() , self.pos2.y()) ] ) ) self.arcLinePolygon.setBrush( QtGui.QBrush(QtCore.Qt.black) ) """ self.angle()!!!!!!!!!""" # self.arcLinePolygon.angle() # self.arcLinePolygon.rotate(rotDeg) # self.arcLinePolygon.setPos( self.pos2 ) #------------------------------------------------------------------------------------------------
def __init__(self, startp=Point(), endp=None, length=60.0, angle=50.0, color=QtCore.Qt.red, pencolor=QtCore.Qt.green, startarrow=True): """ Initialisation of the class. """ self.sc = None super(Arrow, self).__init__() self.startp = QtCore.QPointF(startp.x, -startp.y) self.endp = endp self.length = length self.angle = angle self.startarrow = startarrow self.allwaysshow = False self.arrowHead = QPolygonF() self.setFlag(QGraphicsItem.ItemIsSelectable, False) self.myColor = color self.pen = QPen(pencolor, 1, QtCore.Qt.SolidLine) self.pen.setCosmetic(True) self.arrowSize = 8.0
def __init__(self, parent=None, scene=None): super(ArcItem, self).__init__(None) self.scene = scene self.parent = parent self.arcLine = LineItem(self) self.parent.diagramScene.addItem(self.arcLine) arrowPolygon = QtGui.QPolygonF( [ QtCore.QPointF( 0.0, 0.0), QtCore.QPointF( 0.0, 10.0), QtCore.QPointF( 10.0, 5.0) ] ) self.arcLinePolygon = self.parent.diagramScene.addPolygon( arrowPolygon ) self.pos1 = QtCore.QPointF(20,20) self.pos2 = QtCore.QPointF(200,200) # self.setFlags( self.ItemIsSelectable | self.ItemIsMoveable )
def getPolygon(self, obj): poly = QtGui.QPolygonF() for pt in obj.polygon: point = QtCore.QPointF(pt.x,pt.y) poly.append( point ) return poly # Draw the labels in the given QPainter qp # optionally provide a list of labels to ignore
def __init__(self, startItem, endItem, parent=None, scene=None): super(Arrow, self).__init__(parent, scene) self.arrowHead = QtGui.QPolygonF() self.myStartItem = startItem self.myEndItem = endItem self.setFlag(QtGui.QGraphicsItem.ItemIsSelectable, True) self.myColor = QtCore.Qt.black self.setPen(QtGui.QPen(self.myColor, 2, QtCore.Qt.SolidLine, QtCore.Qt.RoundCap, QtCore.Qt.RoundJoin))
def __init__(self, diagramType, contextMenu, parent=None, scene=None): super(DiagramItem, self).__init__(parent, scene) self.arrows = [] self.diagramType = diagramType self.contextMenu = contextMenu path = QtGui.QPainterPath() if self.diagramType == self.StartEnd: path.moveTo(200, 50) path.arcTo(150, 0, 50, 50, 0, 90) path.arcTo(50, 0, 50, 50, 90, 90) path.arcTo(50, 50, 50, 50, 180, 90) path.arcTo(150, 50, 50, 50, 270, 90) path.lineTo(200, 25) self.myPolygon = path.toFillPolygon() elif self.diagramType == self.Conditional: self.myPolygon = QtGui.QPolygonF([ QtCore.QPointF(-100, 0), QtCore.QPointF(0, 100), QtCore.QPointF(100, 0), QtCore.QPointF(0, -100), QtCore.QPointF(-100, 0)]) elif self.diagramType == self.Step: self.myPolygon = QtGui.QPolygonF([ QtCore.QPointF(-100, -100), QtCore.QPointF(100, -100), QtCore.QPointF(100, 100), QtCore.QPointF(-100, 100), QtCore.QPointF(-100, -100)]) else: self.myPolygon = QtGui.QPolygonF([ QtCore.QPointF(-120, -80), QtCore.QPointF(-70, 80), QtCore.QPointF(120, 80), QtCore.QPointF(70, -80), QtCore.QPointF(-120, -80)]) self.setPolygon(self.myPolygon) self.setFlag(QtGui.QGraphicsItem.ItemIsMovable, True) self.setFlag(QtGui.QGraphicsItem.ItemIsSelectable, True)
def clearPolygon(self): # We do not clear, since the drawPoly might be a reference on an object one self.drawPoly = QtGui.QPolygonF() self.drawPolyClosed = False # Disable actions that need a polygon for act in self.actPolyOrSelObj: act.setEnabled(bool(self.selObjs)) for act in self.actClosedPoly: act.setEnabled(False) # We just closed the polygon and need to deal with this situation
def __init__(self, y, x): hex_center_x, hex_center_y = indextoHex(y, x) center = QtCore.QPointF(hex_center_x, hex_center_y) points = [HEX_SCALE*HEX_SIDE_HALF * QtCore.QPointF(-1, 0) + center, HEX_SCALE*HEX_SIDE_HALF * QtCore.QPointF(-0.5, sqrt(3)/2) + center, HEX_SCALE*HEX_SIDE_HALF * QtCore.QPointF(0.5, sqrt(3)/2) + center, HEX_SCALE*HEX_SIDE_HALF * QtCore.QPointF(1, 0) + center, HEX_SCALE*HEX_SIDE_HALF * QtCore.QPointF(0.5, -sqrt(3)/2) + center, HEX_SCALE*HEX_SIDE_HALF * QtCore.QPointF(-0.5, -sqrt(3)/2) + center] hexagonPointsF = QtGui.QPolygonF(points) super().__init__(hexagonPointsF) self.setPen(HEX_PEN) self.setBrush(defaultcolor) # initialize all as grey
def poly(self, _pts): # ------------------------------------------------------------------- """ Clean up if needet for x in xrange(0, len(_pts)): if self._CANDELS[x][0] == None: self._CANDELS[x][0] = 0; if self._CANDELS[x][1] == None: self._CANDELS[x][1] = 0; """ return QPolygonF(map(lambda p: QPointF(*p), _pts)) # ------------------------------------------------------------------- # =======================================================================
def __init__(self, editor, srcConnector, dstConnector, name="undefined", isPortConnection=False): ''' :param editor: `gui.DiagramEditor`. Editor to show in. :param srcConnector: Source `model.AbstractItem.Connector`. :param dstConnector: Destination `model.AbstractItem.Connector`. :param name: Expression of the CPN arc assigned by the user. :param isPortConnection: Flag that determines, whether the arc represents the connection between a substitution transition and a port place.. ''' QtGui.QGraphicsItem.__init__(self, None) self.editor = editor self.srcConnector = srcConnector self.dstConnector = dstConnector self.isPortConnection = isPortConnection self.name = "" self.arcDefined = False self.variable = None self.expression = None self.diag = None self.pos1 = None self.pos2 = None self.arrowPolygon = None self.replaceExpression = None # self.subnet = subnet self.setZValue(12) if self.srcConnector: rect = self.srcConnector.rect() pos = self.mapFromItem( self.srcConnector, self.srcConnector.position ) self.pos1 = QtCore.QPointF(pos.x() + rect.width()/2, pos.y() + rect.height()/2 ) self.srcConnector.posCallbacks.append(self.setBeginPos) self.srcConnector.connectionArc = self self.arcLine = LineItem(self) self.editor.diagramScene.addItem(self.arcLine) self.arrowPolygon = QtGui.QPolygonF( [ QtCore.QPointF( 0.0, 0.0), QtCore.QPointF( 0.0, 10.0), QtCore.QPointF( 10.0, 5.0) ] ) self.arrowPolygonObject = self.editor.diagramScene.addPolygon( self.arrowPolygon ) self.label = QtGui.QGraphicsTextItem(name, self) self.label.setFlags(self.ItemIsSelectable | self.ItemIsMovable) self.editor.diagramScene.addItem(self.label) #------------------------------------------------------------------------------------------------
def drawZoom(self,qp,overlay): # Zoom disabled? if not self.config.zoom: return # No image if self.image.isNull() or not self.w or not self.h: return # No mouse if not self.mousePos: return # Abbrevation for the zoom window size zoomSize = self.config.zoomSize # Abbrevation for the mouse position mouse = self.mousePos # The pixel that is the zoom center pix = self.mousePosScaled # The size of the part of the image that is drawn in the zoom window selSize = zoomSize / ( self.config.zoomFactor * self.config.zoomFactor ) # The selection window for the image sel = QtCore.QRectF(pix.x() -selSize/2 ,pix.y() -selSize/2 ,selSize,selSize ) # The selection window for the widget view = QtCore.QRectF(mouse.x()-zoomSize/2,mouse.y()-zoomSize/2,zoomSize,zoomSize) # Show the zoom image qp.drawImage(view,self.image,sel) # If we are currently drawing the polygon, we need to draw again in the zoom if not self.drawPoly.isEmpty(): transform = QtGui.QTransform() quadFrom = QtGui.QPolygonF() quadFrom.append( sel.topLeft() ) quadFrom.append( sel.topRight() ) quadFrom.append( sel.bottomRight() ) quadFrom.append( sel.bottomLeft() ) quadTo = QtGui.QPolygonF() quadTo.append( view.topLeft() ) quadTo.append( view.topRight() ) quadTo.append( view.bottomRight() ) quadTo.append( view.bottomLeft() ) if QtGui.QTransform.quadToQuad( quadFrom , quadTo , transform ): qp.setClipRect(view) #transform.translate(self.xoff,self.yoff) self.drawDrawPoly(qp,transform) else: print( "not possible" ) ############################# ## Mouse/keyboard events ############################# # Mouse moved # Need to save the mouse position # Need to drag a polygon point # Need to update the mouse selected object
