Improve ScatterPlotItem.py
Add optimization for PySide, Plot only visible symbole, cache rectTarg
This commit is contained in:
Guillaume Poulin
parent
bd43a7508a
commit
73a079a649
@ -3,7 +3,7 @@ from pyqtgraph.Point import Point
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import pyqtgraph.functions as fn
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from .GraphicsItem import GraphicsItem
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from .GraphicsObject import GraphicsObject
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from itertools import starmap
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from itertools import starmap, repeat
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try:
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from itertools import imap
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except ImportError:
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@ -102,7 +102,6 @@ class SymbolAtlas(object):
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self.symbolPen = weakref.WeakValueDictionary()
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self.symbolBrush = weakref.WeakValueDictionary()
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self.symbolRectSrc = weakref.WeakValueDictionary()
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self.symbolRectTarg = weakref.WeakValueDictionary()
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self.atlasData = None # numpy array of atlas image
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self.atlas = None # atlas as QPixmap
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@ -114,33 +113,25 @@ class SymbolAtlas(object):
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Given a list of spot records, return an object representing the coordinates of that symbol within the atlas
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"""
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rectSrc = np.empty(len(opts), dtype=object)
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rectTarg = np.empty(len(opts), dtype=object)
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keyi = None
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rectSrci = None
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rectTargi = None
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for i, rec in enumerate(opts):
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key = (rec[3], rec[2], id(rec[4]), id(rec[5]))
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if key == keyi:
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rectSrc[i] = rectSrci
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rectTarg[i] = rectTargi
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else:
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try:
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rectSrc[i] = self.symbolRectSrc[key]
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rectTarg[i] = self.symbolRectTarg[key]
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except KeyError:
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newRectSrc = QtCore.QRectF()
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newRectTarg = QtCore.QRectF()
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self.symbolPen[key] = rec['pen']
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self.symbolBrush[key] = rec['brush']
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self.symbolRectSrc[key] = newRectSrc
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self.symbolRectTarg[key] = newRectTarg
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self.atlasValid = False
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rectSrc[i] = self.symbolRectSrc[key]
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rectTarg[i] = self.symbolRectTarg[key]
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keyi = key
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rectSrci = self.symbolRectSrc[key]
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rectTargi = self.symbolRectTarg[key]
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return rectSrc, rectTarg
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return rectSrc
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def buildAtlas(self):
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# get rendered array for all symbols, keep track of avg/max width
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@ -195,7 +186,6 @@ class SymbolAtlas(object):
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self.atlasData = np.zeros((width, height, 4), dtype=np.ubyte)
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for key in symbols:
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y, x, h, w = self.symbolRectSrc[key].getRect()
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self.symbolRectTarg[key].setRect(-h/2, -w/2, h, w)
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self.atlasData[x:x+w, y:y+h] = rendered[key]
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self.atlas = None
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self.atlasValid = True
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@ -247,7 +237,7 @@ class ScatterPlotItem(GraphicsObject):
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self.target = None
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self.fragmentAtlas = SymbolAtlas()
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self.data = np.empty(0, dtype=[('x', float), ('y', float), ('size', float), ('symbol', object), ('pen', object), ('brush', object), ('data', object), ('item', object), ('rectSrc', object), ('rectTarg', object)])
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self.data = np.empty(0, dtype=[('x', float), ('y', float), ('size', float), ('symbol', object), ('pen', object), ('brush', object), ('data', object), ('item', object), ('rectSrc', object), ('rectTarg', object), ('width', float)])
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self.bounds = [None, None] ## caches data bounds
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self._maxSpotWidth = 0 ## maximum size of the scale-variant portion of all spots
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self._maxSpotPxWidth = 0 ## maximum size of the scale-invariant portion of all spots
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@ -561,15 +551,17 @@ class ScatterPlotItem(GraphicsObject):
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if np.any(mask):
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invalidate = True
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opts = self.getSpotOpts(dataSet[mask])
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rectSrc, rectTarg = self.fragmentAtlas.getSymbolCoords(opts)
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rectSrc = self.fragmentAtlas.getSymbolCoords(opts)
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dataSet['rectSrc'][mask] = rectSrc
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dataSet['rectTarg'][mask] = rectTarg
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#for rec in dataSet:
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#if rec['fragCoords'] is None:
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#invalidate = True
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#rec['fragCoords'] = self.fragmentAtlas.getSymbolCoords(*self.getSpotOpts(rec))
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self.fragmentAtlas.getAtlas()
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dataSet['width'] = np.array(list(imap(QtCore.QRectF.width, dataSet['rectSrc'])))/2
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dataSet['rectTarg'] = list(imap(QtCore.QRectF, repeat(0), repeat(0), dataSet['width']*2, dataSet['width']*2))
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self._maxSpotPxWidth=self.fragmentAtlas.max_width
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else:
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self._maxSpotWidth = 0
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@ -699,9 +691,15 @@ class ScatterPlotItem(GraphicsObject):
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tr = self.deviceTransform()
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if tr is None:
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return
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pts = np.empty((2,len(self.data['x'])))
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pts[0] = self.data['x']
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pts[1] = self.data['y']
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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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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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@ -746,18 +744,39 @@ class ScatterPlotItem(GraphicsObject):
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p.resetTransform()
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if not USE_PYSIDE and self.opts['useCache'] and self._exportOpts is False:
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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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pts = np.empty((2,len(self.data['x'])))
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pts[0] = self.data['x']
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pts[1] = self.data['y']
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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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self.target = list(imap(QtCore.QRectF.translated, self.data['rectTarg'], pts[0,:], pts[1,:]))
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p.drawPixmapFragments(self.target, self.data['rectSrc'].tolist(), atlas)
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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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if USE_PYSIDE:
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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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