Clean ScatterPlotItem
This commit is contained in:
Guillaume Poulin
parent
73a079a649
commit
36979b67ea
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@ -687,35 +687,40 @@ class ScatterPlotItem(GraphicsObject):
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self.fragments = None
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self.target = None
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def generateFragments(self):
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def setExportMode(self, *args, **kwds):
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GraphicsObject.setExportMode(self, *args, **kwds)
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self.invalidate()
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def getTransformedPoint(self):
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tr = self.deviceTransform()
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if tr is None:
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return
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mask = np.logical_and(
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np.logical_and(self.data['x'] - self.data['width'] > range[0][0],
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self.data['x'] + self.data['width'] < range[0][1]),
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np.logical_and(self.data['y'] - self.data['width'] > range[1][0],
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self.data['y'] + self.data['width'] < range[1][1])) ## remove out of view points
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data = self.data[mask]
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return None, None
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## Remove out of view points
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w = np.empty((2,len(self.data['width'])))
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w[0] = self.data['width']
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w[1] = self.data['width']
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q, intv = tr.inverted()
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if intv:
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w = fn.transformCoordinates(q, w)
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w=np.abs(w)
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range = self.getViewBox().viewRange()
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mask = np.logical_and(
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np.logical_and(self.data['x'] + w[0,:] > range[0][0],
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self.data['x'] - w[0,:] < range[0][1]),
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np.logical_and(self.data['y'] + w[0,:] > range[1][0],
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self.data['y'] - w[0,:] < range[1][1])) ## remove out of view points
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data = self.data[mask]
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else:
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data = self.data
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pts = np.empty((2,len(data['x'])))
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pts[0] = data['x']
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pts[1] = data['y']
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pts = fn.transformCoordinates(tr, pts)
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self.fragments = []
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pts = np.clip(pts, -2**30, 2**30) ## prevent Qt segmentation fault.
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## Still won't be able to render correctly, though.
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#for i in xrange(len(self.data)):
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# rec = self.data[i]
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# pos = QtCore.QPointF(pts[0,i], pts[1,i])
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# x,y,w,h = rec['fragCoords']
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# rect = QtCore.QRectF(y, x, h, w)
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# self.fragments.append(QtGui.QPainter.PixmapFragment.create(pos, rect))
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pos = imap(QtCore.QPointF, pts[0,:], pts[1,:])
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self.fragments = list(imap(QtGui.QPainter.PixmapFragment.create, pos, self.data['rectSrc']))
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def setExportMode(self, *args, **kwds):
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GraphicsObject.setExportMode(self, *args, **kwds)
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self.invalidate()
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pts -= data['width']
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pts = np.clip(pts, -2**30, 2**30)
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return data, pts
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@pg.debug.warnOnException ## raising an exception here causes crash
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def paint(self, p, *args):
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@ -732,44 +737,14 @@ class ScatterPlotItem(GraphicsObject):
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if self.opts['pxMode'] is True:
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atlas = self.fragmentAtlas.getAtlas()
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#arr = fn.imageToArray(atlas.toImage(), copy=True)
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#if hasattr(self, 'lastAtlas'):
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#if np.any(self.lastAtlas != arr):
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#print "Atlas changed:", arr
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#self.lastAtlas = arr
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#if self.fragments is None:
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#self.updateSpots()
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#self.generateFragments()
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p.resetTransform()
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data, pts = self.getTransformedPoint()
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if data is None:
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return
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if self.opts['useCache'] and self._exportOpts is False:
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tr = self.deviceTransform()
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if tr is None:
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return
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w = np.empty((2,len(self.data['width'])))
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w[0] = self.data['width']
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w[1] = self.data['width']
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q, intv = tr.inverted()
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if intv:
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w = fn.transformCoordinates(q, w)
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w=np.abs(w)
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range = self.getViewBox().viewRange()
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mask = np.logical_and(
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np.logical_and(self.data['x'] + w[0,:] > range[0][0],
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self.data['x'] - w[0,:] < range[0][1]),
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np.logical_and(self.data['y'] + w[0,:] > range[1][0],
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self.data['y'] - w[0,:] < range[1][1])) ## remove out of view points
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data = self.data[mask]
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else:
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data = self.data
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pts = np.empty((2,len(data['x'])))
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pts[0] = data['x']
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pts[1] = data['y']
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pts = fn.transformCoordinates(tr, pts)
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pts -= data['width']
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pts = np.clip(pts, -2**30, 2**30)
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if self.target == None:
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list(imap(QtCore.QRectF.moveTo, data['rectTarg'], pts[0,:], pts[1,:]))
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self.target=data['rectTarg']
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@ -777,17 +752,13 @@ class ScatterPlotItem(GraphicsObject):
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list(imap(p.drawPixmap, self.target, repeat(atlas), data['rectSrc']))
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else:
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p.drawPixmapFragments(self.target.tolist(), data['rectSrc'].tolist(), atlas)
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#p.drawPixmapFragments(self.fragments, atlas)
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else:
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if self.fragments is None:
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self.generateFragments()
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p.setRenderHint(p.Antialiasing, aa)
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for i in range(len(self.data)):
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rec = self.data[i]
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frag = self.fragments[i]
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rec = data[i]
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p.resetTransform()
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p.translate(frag.x, frag.y)
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p.translate(pts[0,i], pts[1,i])
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drawSymbol(p, *self.getSpotOpts(rec, scale))
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else:
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if self.picture is None:
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@ -798,7 +769,7 @@ class ScatterPlotItem(GraphicsObject):
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rec = rec.copy()
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rec['size'] *= scale
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p2.resetTransform()
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p2.translate(rec['x'], rec['y'])
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p2.translate(rec['x']+rec['width'], rec['y']+rec['width'])
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drawSymbol(p2, *self.getSpotOpts(rec, scale))
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p2.end()
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