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cleanup; corrected view clipping.

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This commit is contained in:
Luke Campagnola 2014-01-17 18:31:36 -05:00
parent 6e5e35691c
commit b813ecabc3
1 changed files with 19 additions and 22 deletions
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41
pyqtgraph/graphicsItems/ScatterPlotItem.py
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@ -693,34 +693,31 @@ class ScatterPlotItem(GraphicsObject):
def getTransformedPoint(self):
# Map point locations to device
vb = self.getViewBox()
if vb is None:
return None, None
tr = self.deviceTransform()
if tr is None:
return None, None
## Remove out of view points
w = np.empty((2,len(self.data['width'])))
w[0] = self.data['width']
w[1] = self.data['width']
q, intv = tr.inverted()
if intv:
w = fn.transformCoordinates(q, w)
w=np.abs(w)
range = self.getViewBox().viewRange()
mask = np.logical_and(
np.logical_and(self.data['x'] + w[0,:] > range[0][0],
self.data['x'] - w[0,:] < range[0][1]),
np.logical_and(self.data['y'] + w[0,:] > range[1][0],
self.data['y'] - w[0,:] < range[1][1])) ## remove out of view points
data = self.data[mask]
else:
data = self.data
pts = np.empty((2,len(data['x'])))
pts[0] = data['x']
pts[1] = data['y']
pts = np.empty((2,len(self.data['x'])))
pts[0] = self.data['x']
pts[1] = self.data['y']
pts = fn.transformCoordinates(tr, pts)
pts -= data['width']
pts -= self.data['width']
pts = np.clip(pts, -2**30, 2**30) ## prevent Qt segmentation fault.
return data, pts
## Remove out of view points
viewBounds = vb.mapRectToDevice(vb.boundingRect())
w = self.data['width']
mask = ((pts[0] + w > viewBounds.left()) &
(pts[0] - w < viewBounds.right()) &
(pts[1] + w > viewBounds.top()) &
(pts[1] - w < viewBounds.bottom())) ## remove out of view points
print np.sum(mask)
return self.data[mask], pts[:, mask]
@debug.warnOnException ## raising an exception here causes crash
def paint(self, p, *args):