def drag(self, node):

        """ Drags given node to mouse location.
        """
    
        dx = self.mouse.x - self.graph.x
        dy = self.mouse.y - self.graph.y

        # A dashed line indicates the drag vector.
        s = self.graph.styles.default
        self._ctx.nofill()
        self._ctx.nostroke()
        if s.stroke: 
            self._ctx.strokewidth(s.strokewidth)
            self._ctx.stroke(
                s.stroke.r, 
                s.stroke.g, 
                s.stroke.g, 
                0.75
            )
        p = self._ctx.line(node.x, node.y, dx, dy, draw=False)
        try: p._nsBezierPath.setLineDash_count_phase_([2,4], 2, 50)
        except:
            pass
        self._ctx.drawpath(p)
        r = node.__class__(None).r * 0.75
        self._ctx.oval(dx-r/2, dy-r/2, r, r)
    
        node.vx = dx / self.graph.d
        node.vy = dy / self.graph.d
def drag(self, node):

        """ Drags given node to mouse location.
        """
    
        dx = self.mouse.x - self.graph.x
        dy = self.mouse.y - self.graph.y

        # A dashed line indicates the drag vector.
        s = self.graph.styles.default
        self._ctx.nofill()
        self._ctx.nostroke()
        if s.stroke: 
            self._ctx.strokewidth(s.strokewidth)
            self._ctx.stroke(
                s.stroke.r, 
                s.stroke.g, 
                s.stroke.g, 
                0.75
            )
        p = self._ctx.line(node.x, node.y, dx, dy, draw=False)
        try: p._nsBezierPath.setLineDash_count_phase_([2,4], 2, 50)
        except:
            pass
        self._ctx.drawpath(p)
        r = node.__class__(None).r * 0.75
        self._ctx.oval(dx-r/2, dy-r/2, r, r)
    
        node.vx = dx / self.graph.d
        node.vy = dy / self.graph.d
def drag ( self , node ) : dx = self . mouse . x - self . graph . x dy = self . mouse . y - self . graph . y # A dashed line indicates the drag vector. s = self . graph . styles . default self . _ctx . nofill ( ) self . _ctx . nostroke ( ) if s . stroke : self . _ctx . strokewidth ( s . strokewidth ) self . _ctx . stroke ( s . stroke . r , s . stroke . g , s . stroke . g , 0.75 ) p = self . _ctx . line ( node . x , node . y , dx , dy , draw = False ) try : p . _nsBezierPath . setLineDash_count_phase_ ( [ 2 , 4 ] , 2 , 50 ) except : pass self . _ctx . drawpath ( p ) r = node . __class__ ( None ) . r * 0.75 self . _ctx . oval ( dx - r / 2 , dy - r / 2 , r , r ) node . vx = dx / self . graph . d node . vy = dy / self . graph . d
Drags given node to mouse location.
Drags given node to mouse location .