[Qgis-user] Rubberband class in QGIS 1.7

[ASAHI Kosuke]

Dear All,

I made features select plugin used rubberband class and extended
QgsMapTool class.
It work fine in QGIS 1.6, But not work in QGIS 1.7.
After rubberBand.movePoint() in canvasMoveEvent(), it was crashed.

Please give me any advice. Is this a bug in QGIS 1.7?

All sources are here.
 http://d.hatena.ne.jp/waigani/files/sweepselect_test2.zip

I use rubberband class like this.
====================================
class QgsMapToolSweepSelect(QgsMapTool):
    def __init__(self, canvas):
        QgsMapTool.__init__(self, canvas)
        self.canvas = canvas
        self.rubberBand = QgsRubberBand(canvas, True)
        self.pressed = False

    def canvasPressEvent(self, event):
        self.center = self.toMapCoordinates(QPoint(event.pos().x(),
event.pos().y()))

        for cnt in range(0,359):
            self.rubberBand.addPoint(self.center, False)
        self.rubberBand.addPoint(self.center, True)
        self.pressed = True

    def canvasMoveEvent(self, event):
        if self.pressed == True:
            cpos = self.toMapCoordinates(QPoint(event.pos().x(),
event.pos().y()))
            len = math.sqrt((self.center.x()-cpos.x())**2 +
(self.center.y()-cpos.y())**2)
            for cnt in range(0,361):
                x = math.cos(math.radians(cnt)) * len + self.center.x()
                y = math.sin(math.radians(cnt)) * len + self.center.y()
                self.rubberBand.movePoint(cnt, QgsPoint(x,y))

    def canvasReleaseEvent(self, event):
        layer = self.canvas.currentLayer()
        if layer == None or layer.type() != QgsMapLayer.VectorLayer:
            self.rubberBand.reset()
            self.pressed = False
            return

        layer.removeSelection()
        circle = self.rubberBand.asGeometry()
        fid = []

        provider = layer.dataProvider()
        provider.select([], circle.boundingBox(), True, True)
        feat = QgsFeature()
        while provider.nextFeature(feat):
            if circle.intersects(feat.geometry()):
                fid.append(feat.id())

        for id in fid:
            layer.select(id)

        self.rubberBand.reset(True)
        self.pressed = False

-- 
ASAHI Kosuke