ScatterPlotItem.py 文件源码

def getSymbolCoords(self, opts):
        """
        Given a list of spot records, return an object representing the coordinates of that symbol within the atlas
        """
        sourceRect = np.empty(len(opts), dtype=object)
        keyi = None
        sourceRecti = None
        for i, rec in enumerate(opts):
            key = (rec[3], rec[2], id(rec[4]), id(rec[5]))   # TODO: use string indexes?
            if key == keyi:
                sourceRect[i] = sourceRecti
            else:
                try:
                    sourceRect[i] = self.symbolMap[key]
                except KeyError:
                    newRectSrc = QtCore.QRectF()
                    newRectSrc.pen = rec['pen']
                    newRectSrc.brush = rec['brush']
                    self.symbolMap[key] = newRectSrc
                    self.atlasValid = False
                    sourceRect[i] = newRectSrc
                    keyi = key
                    sourceRecti = newRectSrc
        return sourceRect