canvas2d.py 文件源码

def paint_shape(self, shape):
        """
        Create all plotting related parts of one shape.
        @param shape: The shape to be plotted.
        """
        start, start_ang = shape.get_start_end_points(True, True)
        shape.path = QPainterPath()
        shape.path.moveTo(start.x, -start.y)
        drawHorLine = lambda caller, start, end: shape.path.lineTo(end.x, -end.y)
        drawVerLine = lambda caller, start: None  # Not used in 2D mode
        shape.make_path(drawHorLine, drawVerLine)

        self.BB = self.BB.joinBB(shape.BB)

        shape.stmove = self.createstmove(shape)
        shape.starrow = self.createstarrow(shape)
        shape.enarrow = self.createenarrow(shape)
        shape.stmove.setParentItem(shape)
        shape.starrow.setParentItem(shape)
        shape.enarrow.setParentItem(shape)