def setUp( self ):
self.GRAY1 = 60
self.ds1 = ConstantSource( self.GRAY1 )
self.GRAY2 = 120
self.ds2 = ConstantSource( self.GRAY2 )
self.GRAY3 = 190
self.ds3 = ConstantSource( self.GRAY3 )
self.layer1 = GrayscaleLayer( self.ds1, normalize = False )
self.layer1.visible = False
self.layer1.opacity = 0.1
self.ims1 = GrayscaleImageSource( self.ds1, self.layer1 )
self.layer2 = GrayscaleLayer( self.ds2, normalize = False )
self.layer2.visible = True
self.layer2.opacity = 0.3
self.ims2 = GrayscaleImageSource( self.ds2, self.layer2 )
self.layer3 = GrayscaleLayer( self.ds3, normalize = False )
self.layer3.visible = True
self.layer3.opacity = 1.0
self.ims3 = GrayscaleImageSource( self.ds3, self.layer3 )
lsm = LayerStackModel()
lsm.append(self.layer1)
lsm.append(self.layer2)
lsm.append(self.layer3)
self.lsm = lsm
sims = StackedImageSources( lsm )
sims.register( self.layer1, self.ims1 )
sims.register( self.layer2, self.ims2 )
sims.register( self.layer3, self.ims3 )
self.sims = sims
def testAddingAndRemovingLayers( self ):
lsm = LayerStackModel()
sims = StackedImageSources( lsm )
ims_view = sims.viewImageSources()
self.assertEqual(len(lsm), 0)
self.assertEqual(len(sims), 0)
self.assertEqual(len(ims_view), 0)
lsm.append(self.layer1)
lsm.append(self.layer2)
sims.register(self.layer1, self.ims1)
sims.register(self.layer2, self.ims2)
self.assertEqual(sims.isRegistered(self.layer1), True)
self.assertEqual(sims.isRegistered(self.layer2), True)
self.assertEqual(len(lsm), 2)
self.assertEqual(len(sims), 2)
self.assertEqual(len(ims_view), 2)
self.assertEqual(ims_view[0], self.ims2)
self.assertEqual(ims_view[1], self.ims1)
lsm.append(self.layer3)
self.assertEqual(len(lsm), 3)
self.assertEqual(len(sims), 2)
self.assertEqual(len(ims_view), 2)
self.assertEqual(ims_view[0], self.ims2)
self.assertEqual(ims_view[1], self.ims1)
self.assertEqual(sims.isRegistered(self.layer1), True)
self.assertEqual(sims.isRegistered(self.layer2), True)
lsm.selectRow(1) # layer2
lsm.deleteSelected()
self.assertEqual(len(lsm), 2)
self.assertEqual(len(sims), 1)
self.assertEqual(len(ims_view), 1)
self.assertEqual(ims_view[0], self.ims1)
self.assertEqual(sims.isRegistered(self.layer1), True)
self.assertEqual(sims.isRegistered(self.layer2), False)
lsm.selectRow(0) # layer3
lsm.deleteSelected()
self.assertEqual(len(lsm), 1)
self.assertEqual(len(sims), 1)
self.assertEqual(len(ims_view), 1)
self.assertEqual(ims_view[0], self.ims1)
self.assertEqual(sims.isRegistered(self.layer1), True)
self.assertEqual(sims.isRegistered(self.layer2), False)
sims.deregister(self.layer1)
self.assertEqual(len(lsm), 1)
self.assertEqual(len(sims), 0)
self.assertEqual(len(ims_view), 0)
self.assertEqual(sims.isRegistered(self.layer1), False)
self.assertEqual(sims.isRegistered(self.layer2), False)
def testAddingAndRemovingLayers(self):
lsm = LayerStackModel()
sims = StackedImageSources(lsm)
ims_view = sims.viewImageSources()
self.assertEqual(len(lsm), 0)
self.assertEqual(len(sims), 0)
self.assertEqual(len(ims_view), 0)
lsm.append(self.layer1)
lsm.append(self.layer2)
sims.register(self.layer1, self.ims1)
sims.register(self.layer2, self.ims2)
self.assertEqual(sims.isRegistered(self.layer1), True)
self.assertEqual(sims.isRegistered(self.layer2), True)
self.assertEqual(len(lsm), 2)
self.assertEqual(len(sims), 2)
self.assertEqual(len(ims_view), 2)
self.assertEqual(ims_view[0], self.ims2)
self.assertEqual(ims_view[1], self.ims1)
lsm.append(self.layer3)
self.assertEqual(len(lsm), 3)
self.assertEqual(len(sims), 2)
self.assertEqual(len(ims_view), 2)
self.assertEqual(ims_view[0], self.ims2)
self.assertEqual(ims_view[1], self.ims1)
self.assertEqual(sims.isRegistered(self.layer1), True)
self.assertEqual(sims.isRegistered(self.layer2), True)
lsm.selectRow(1) # layer2
lsm.deleteSelected()
self.assertEqual(len(lsm), 2)
self.assertEqual(len(sims), 1)
self.assertEqual(len(ims_view), 1)
self.assertEqual(ims_view[0], self.ims1)
self.assertEqual(sims.isRegistered(self.layer1), True)
self.assertEqual(sims.isRegistered(self.layer2), False)
lsm.selectRow(0) # layer3
lsm.deleteSelected()
self.assertEqual(len(lsm), 1)
self.assertEqual(len(sims), 1)
self.assertEqual(len(ims_view), 1)
self.assertEqual(ims_view[0], self.ims1)
self.assertEqual(sims.isRegistered(self.layer1), True)
self.assertEqual(sims.isRegistered(self.layer2), False)
sims.deregister(self.layer1)
self.assertEqual(len(lsm), 1)
self.assertEqual(len(sims), 0)
self.assertEqual(len(ims_view), 0)
self.assertEqual(sims.isRegistered(self.layer1), False)
self.assertEqual(sims.isRegistered(self.layer2), False)
class ImageScene2D_LazyTest(ut.TestCase):
def setUp(self):
self.layerstack = LayerStackModel()
self.sims = StackedImageSources(self.layerstack)
self.g = Graph()
self.op = OpLazy(self.g)
self.ds = LazyflowSource(self.op.Output)
self.ss = SliceSource(self.ds, projectionAlongTZC)
self.layer = GrayscaleLayer(self.ds, normalize=False)
self.layerstack.append(self.layer)
self.ims = imsfac.createImageSource(self.layer, [self.ss])
self.sims.register(self.layer, self.ims)
self.scene = ImageScene2D(PositionModel(), (0, 0, 0), preemptive_fetch_number=0)
self.scene.setCacheSize(1)
self.scene.stackedImageSources = self.sims
self.scene.dataShape = (30, 30)
def renderScene(self, s, exportFilename=None, joinRendering=True):
img = QImage(30, 30, QImage.Format_ARGB32_Premultiplied)
img.fill(Qt.white)
p = QPainter(img)
s.render(p) # trigger a rendering of the whole scene
if joinRendering:
# wait for all the data to arrive
s.joinRenderingAllTiles(viewport_only=False) # There is no viewport!
# finally, render everything
s.render(p)
p.end()
if exportFilename is not None:
img.save(exportFilename)
return byte_view(img)
def testLazy(self):
for i in range(3):
self.op.setConstant(i)
aimg = self.renderScene(self.scene, "/tmp/a_%03d.png" % i)
assert numpy.all(aimg[:, :, 0] == i), "!= %d, [0,0,0]=%d" % (i, aimg[0, 0, 0])
self.op.setConstant(42)
self.op.setDelay(1)
aimg = self.renderScene(self.scene, joinRendering=False, exportFilename="/tmp/x_%03d.png" % i)
# this should be "i", not 255 (the default background for the imagescene)
assert numpy.all(aimg[:, :, 0] == i), "!= %d, [0,0,0]=%d" % (i, aimg[0, 0, 0])
# Now give the scene time to update before we change it again...
self.scene.joinRenderingAllTiles(viewport_only=False)
def testRegisterAndDeregister( self ):
lsm = LayerStackModel()
sims = StackedImageSources( lsm )
self.assertEqual( len(lsm), 0 )
self.assertEqual( len(sims), 0 )
lsm.append(self.layer1)
lsm.append(self.layer2)
lsm.append(self.layer3)
self.assertEqual( lsm.layerIndex(self.layer1), 2 )
self.assertEqual( lsm.layerIndex(self.layer2), 1 )
self.assertEqual( lsm.layerIndex(self.layer3), 0 )
self.assertEqual( len(lsm), 3 )
self.assertEqual( len(sims), 0 )
self.assertFalse(sims.isRegistered(self.layer2))
sims.register( self.layer2, self.ims2 )
self.assertTrue(sims.isRegistered(self.layer2))
self.assertEqual( len(sims), 1 )
self.assertEqual( sims.getImageSource(0), self.ims2 )
sims.register( self.layer1, self.ims1 )
sims.register( self.layer3, self.ims3 )
sims.deregister( self.layer2 )
self.assertTrue( sims.isRegistered( self.layer1 ))
self.assertFalse( sims.isRegistered( self.layer2 ))
self.assertTrue( sims.isRegistered( self.layer3 ))
self.assertEqual( len(lsm), 3 )
self.assertEqual( len(sims), 2 )
self.assertEqual( sims.getImageSource(0), self.ims3 )
self.assertEqual( sims.getImageSource(1), self.ims1 )
for i,v in enumerate(sims):
if i == 0:
self.assertEqual(len(v), 3)
self.assertEqual(v[0], self.layer3.visible)
self.assertEqual(v[1], self.layer3.opacity)
self.assertEqual(v[2], self.ims3)
elif i == 1:
self.assertEqual(len(v), 3)
self.assertEqual(v[0], self.layer1.visible)
self.assertEqual(v[1], self.layer1.opacity)
self.assertEqual(v[2], self.ims1)
else:
raise Exception("unexpected index")
sims.deregister( self.layer1 )
sims.deregister( self.layer3 )
self.assertEqual( len(lsm), 3 )
self.assertEqual( len(sims), 0 )
lsm.clear()
def testRegisterAndDeregister(self):
lsm = LayerStackModel()
sims = StackedImageSources(lsm)
self.assertEqual(len(lsm), 0)
self.assertEqual(len(sims), 0)
lsm.append(self.layer1)
lsm.append(self.layer2)
lsm.append(self.layer3)
self.assertEqual(lsm.layerIndex(self.layer1), 2)
self.assertEqual(lsm.layerIndex(self.layer2), 1)
self.assertEqual(lsm.layerIndex(self.layer3), 0)
self.assertEqual(len(lsm), 3)
self.assertEqual(len(sims), 0)
self.assertFalse(sims.isRegistered(self.layer2))
sims.register(self.layer2, self.ims2)
self.assertTrue(sims.isRegistered(self.layer2))
self.assertEqual(len(sims), 1)
self.assertEqual(sims.getImageSource(0), self.ims2)
sims.register(self.layer1, self.ims1)
sims.register(self.layer3, self.ims3)
sims.deregister(self.layer2)
self.assertTrue(sims.isRegistered(self.layer1))
self.assertFalse(sims.isRegistered(self.layer2))
self.assertTrue(sims.isRegistered(self.layer3))
self.assertEqual(len(lsm), 3)
self.assertEqual(len(sims), 2)
self.assertEqual(sims.getImageSource(0), self.ims3)
self.assertEqual(sims.getImageSource(1), self.ims1)
for i, v in enumerate(sims):
if i == 0:
self.assertEqual(len(v), 3)
self.assertEqual(v[0], self.layer3.visible)
self.assertEqual(v[1], self.layer3.opacity)
self.assertEqual(v[2], self.ims3)
elif i == 1:
self.assertEqual(len(v), 3)
self.assertEqual(v[0], self.layer1.visible)
self.assertEqual(v[1], self.layer1.opacity)
self.assertEqual(v[2], self.ims1)
else:
raise Exception("unexpected index")
sims.deregister(self.layer1)
sims.deregister(self.layer3)
self.assertEqual(len(lsm), 3)
self.assertEqual(len(sims), 0)
lsm.clear()
class ImageScene2DTest( ut.TestCase ):
def setUp( self ):
self.app = QApplication([], False)
self.layerstack = LayerStackModel()
self.sims = StackedImageSources( self.layerstack )
self.GRAY = 201
self.ds = ConstantSource(self.GRAY)
self.layer = GrayscaleLayer( self.ds )
self.layerstack.append(self.layer)
self.ims = imsfac.createImageSource( self.layer, [self.ds] )
self.sims.register(self.layer, self.ims)
self.scene = ImageScene2D(self.app)
self.scene.stackedImageSources = self.sims
self.scene.sceneShape = (310,290)
def renderScene( self, s):
img = QImage(310,290,QImage.Format_ARGB32_Premultiplied)
p = QPainter(img)
s.render(p)
s.joinRendering()
s.render(p)
p.end()
return byte_view(img)
def testBasicImageRenderingCapability( self ):
import time
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:,:,0:3] == self.GRAY))
self.assertTrue(np.all(aimg[:,:,3] == 255))
@ut.skipIf(os.getenv('TRAVIS'), 'fails on TRAVIS CI due to unknown reasons')
def testToggleVisibilityOfOneLayer( self ):
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:,:,0:3] == self.GRAY))
self.assertTrue(np.all(aimg[:,:,3] == 255))
self.layer.visible = False
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:,:,0:3] == 255)) # all white
self.assertTrue(np.all(aimg[:,:,3] == 255))
self.layer.visible = True
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:,:,0:3] == self.GRAY))
self.assertTrue(np.all(aimg[:,:,3] == 255))
def testFirstFullyOpaque( self ):
lsm = LayerStackModel()
sims = StackedImageSources( lsm )
self.assertEqual(sims.firstFullyOpaque(), None)
lsm.append(self.layer1)
lsm.append(self.layer2)
lsm.append(self.layer3)
self.assertEqual( lsm.layerIndex(self.layer1), 2 )
self.assertEqual( lsm.layerIndex(self.layer2), 1 )
self.assertEqual( lsm.layerIndex(self.layer3), 0 )
sims.register(self.layer1, self.ims1)
sims.register(self.layer2, self.ims2)
sims.register(self.layer3, self.ims3)
self.assertEqual(sims.firstFullyOpaque(), 0)
lsm.clear()
sims = StackedImageSources( lsm )
lsm.append(self.layer2)
lsm.append(self.layer3)
lsm.append(self.layer1)
self.assertEqual( lsm.layerIndex(self.layer1), 0 )
self.assertEqual( lsm.layerIndex(self.layer2), 2 )
self.assertEqual( lsm.layerIndex(self.layer3), 1 )
sims.register(self.layer1, self.ims1)
sims.register(self.layer2, self.ims2)
sims.register(self.layer3, self.ims3)
self.assertEqual(sims.firstFullyOpaque(), 1)
lsm.clear()
sims = StackedImageSources( lsm )
lsm.append(self.layer2)
lsm.append(self.layer1)
self.assertEqual( lsm.layerIndex(self.layer1), 0 )
self.assertEqual( lsm.layerIndex(self.layer2), 1 )
sims.register(self.layer1, self.ims1)
sims.register(self.layer2, self.ims2)
self.assertEqual(sims.firstFullyOpaque(), None)
lsm.clear()
def testFirstFullyOpaque(self):
lsm = LayerStackModel()
sims = StackedImageSources(lsm)
self.assertEqual(sims.firstFullyOpaque(), None)
lsm.append(self.layer1)
lsm.append(self.layer2)
lsm.append(self.layer3)
self.assertEqual(lsm.layerIndex(self.layer1), 2)
self.assertEqual(lsm.layerIndex(self.layer2), 1)
self.assertEqual(lsm.layerIndex(self.layer3), 0)
sims.register(self.layer1, self.ims1)
sims.register(self.layer2, self.ims2)
sims.register(self.layer3, self.ims3)
self.assertEqual(sims.firstFullyOpaque(), 0)
lsm.clear()
sims = StackedImageSources(lsm)
lsm.append(self.layer2)
lsm.append(self.layer3)
lsm.append(self.layer1)
self.assertEqual(lsm.layerIndex(self.layer1), 0)
self.assertEqual(lsm.layerIndex(self.layer2), 2)
self.assertEqual(lsm.layerIndex(self.layer3), 1)
sims.register(self.layer1, self.ims1)
sims.register(self.layer2, self.ims2)
sims.register(self.layer3, self.ims3)
self.assertEqual(sims.firstFullyOpaque(), 1)
lsm.clear()
sims = StackedImageSources(lsm)
lsm.append(self.layer2)
lsm.append(self.layer1)
self.assertEqual(lsm.layerIndex(self.layer1), 0)
self.assertEqual(lsm.layerIndex(self.layer2), 1)
sims.register(self.layer1, self.ims1)
sims.register(self.layer2, self.ims2)
self.assertEqual(sims.firstFullyOpaque(), None)
lsm.clear()
class ImageScene2D_RenderTest(ut.TestCase):
@classmethod
def setUpClass(cls):
cls.app = None
if QApplication.instance():
cls.app = QApplication.instance()
else:
cls.app = QApplication([], False)
@classmethod
def tearDownClass(cls):
del cls.app
def setUp(self):
self.layerstack = LayerStackModel()
self.sims = StackedImageSources(self.layerstack)
self.GRAY = 201
self.ds = ConstantSource(self.GRAY)
self.layer = GrayscaleLayer(self.ds)
self.layerstack.append(self.layer)
self.ims = imsfac.createImageSource(self.layer, [self.ds])
self.sims.register(self.layer, self.ims)
self.scene = ImageScene2D(PositionModel(), (0, 3, 4),
preemptive_fetch_number=0)
self.scene.stackedImageSources = self.sims
self.scene.dataShape = (310, 290)
def tearDown(self):
if self.scene._tileProvider:
self.scene._tileProvider.notifyThreadsToStop()
self.scene._tileProvider.joinThreads()
def renderScene(self, s, exportFilename=None):
img = QImage(310, 290, QImage.Format_ARGB32_Premultiplied)
img.fill(0)
p = QPainter(img)
s.render(p)
s.joinRendering()
s.render(p)
p.end()
if exportFilename is not None:
img.save(exportFilename)
return byte_view(img)
def testBasicImageRenderingCapability(self):
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:, :, 0:3] == self.GRAY))
self.assertTrue(np.all(aimg[:, :, 3] == 255))
def testToggleVisibilityOfOneLayer(self):
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:, :, 0:3] == self.GRAY))
self.assertTrue(np.all(aimg[:, :, 3] == 255))
self.layer.visible = False
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:, :, 0:3] == 0)) # all white
self.assertTrue(np.all(aimg[:, :, 3] == 0))
self.layer.visible = True
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:, :, 0:3] == self.GRAY))
self.assertTrue(np.all(aimg[:, :, 3] == 255))
class ImageScene2D_RenderTest( ut.TestCase ):
@classmethod
def setUpClass(cls):
cls.app = None
if QApplication.instance():
cls.app = QApplication.instance()
else:
cls.app = QApplication([], False)
@classmethod
def tearDownClass(cls):
del cls.app
def setUp( self ):
self.layerstack = LayerStackModel()
self.sims = StackedImageSources( self.layerstack )
self.GRAY = 201
self.ds = ConstantSource(self.GRAY)
self.layer = GrayscaleLayer( self.ds )
self.layerstack.append(self.layer)
self.ims = imsfac.createImageSource( self.layer, [self.ds] )
self.sims.register(self.layer, self.ims)
self.scene = ImageScene2D(PositionModel(), (0,3,4), preemptive_fetch_number=0)
self.scene.stackedImageSources = self.sims
self.scene.dataShape = (310,290)
def tearDown( self ):
if self.scene._tileProvider:
self.scene._tileProvider.notifyThreadsToStop()
self.scene._tileProvider.joinThreads()
def renderScene( self, s, exportFilename=None):
img = QImage(310,290,QImage.Format_ARGB32_Premultiplied)
p = QPainter(img)
s.render(p)
s.joinRendering()
s.render(p)
p.end()
if exportFilename is not None:
img.save(exportFilename)
return byte_view(img)
def testBasicImageRenderingCapability( self ):
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:,:,0:3] == self.GRAY))
self.assertTrue(np.all(aimg[:,:,3] == 255))
def testToggleVisibilityOfOneLayer( self ):
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:,:,0:3] == self.GRAY))
self.assertTrue(np.all(aimg[:,:,3] == 255))
self.layer.visible = False
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:,:,0:3] == 255)) # all white
self.assertTrue(np.all(aimg[:,:,3] == 255))
self.layer.visible = True
aimg = self.renderScene(self.scene)
self.assertTrue(np.all(aimg[:,:,0:3] == self.GRAY))
self.assertTrue(np.all(aimg[:,:,3] == 255))
class ImageScene2D_LazyTest(ut.TestCase):
@classmethod
def setUpClass(cls):
cls.app = None
if QApplication.instance():
cls.app = QApplication.instance()
else:
cls.app = QApplication([], False)
@classmethod
def tearDownClass(cls):
del cls.app
def setUp(self):
self.layerstack = LayerStackModel()
self.sims = StackedImageSources(self.layerstack)
self.g = Graph()
self.op = OpLazy(self.g)
self.ds = LazyflowSource(self.op.Output)
self.ss = SliceSource(self.ds, projectionAlongTZC)
self.layer = GrayscaleLayer(self.ds)
self.layerstack.append(self.layer)
self.ims = imsfac.createImageSource(self.layer, [self.ss])
self.sims.register(self.layer, self.ims)
self.scene = ImageScene2D(PositionModel(), (0, 0, 0),
preemptive_fetch_number=0)
self.scene.setCacheSize(1)
self.scene.stackedImageSources = self.sims
self.scene.dataShape = (30, 30)
def tearDown(self):
if self.scene._tileProvider:
self.scene._tileProvider.notifyThreadsToStop()
self.scene._tileProvider.joinThreads()
def renderScene(self, s, exportFilename=None, joinRendering=True):
img = QImage(30, 30, QImage.Format_ARGB32_Premultiplied)
img.fill(Qt.white)
p = QPainter(img)
s.render(p) #trigger a rendering of the whole scene
if joinRendering:
#wait for all the data to arrive
s.joinRendering()
#finally, render everything
s.render(p)
p.end()
if exportFilename is not None:
img.save(exportFilename)
return byte_view(img)
def testLazy(self):
for i in range(3):
self.op.setConstant(i)
aimg = self.renderScene(self.scene, "/tmp/a_%03d.png" % i)
assert numpy.all(
aimg[:, :,
0] == i), "!= %d, [0,0,0]=%d" % (i, aimg[0, 0, 0])
self.op.setConstant(42)
self.op.setDelay(1)
aimg = self.renderScene(self.scene,
joinRendering=False,
exportFilename="/tmp/x_%03d.png" % i)
#this should be "i", not 255 (the default background for the imagescene)
assert numpy.all(
aimg[:, :,
0] == i), "!= %d, [0,0,0]=%d" % (i, aimg[0, 0, 0])
class ImageScene2D_LazyTest( ut.TestCase ):
@classmethod
def setUpClass(cls):
cls.app = None
if QApplication.instance():
cls.app = QApplication.instance()
else:
cls.app = QApplication([], False)
@classmethod
def tearDownClass(cls):
del cls.app
def setUp( self ):
self.layerstack = LayerStackModel()
self.sims = StackedImageSources( self.layerstack )
self.g = Graph()
self.op = OpLazy(self.g)
self.ds = LazyflowSource( self.op.Output )
self.ss = SliceSource( self.ds, projectionAlongTZC )
self.layer = GrayscaleLayer(self.ds)
self.layerstack.append(self.layer)
self.ims = imsfac.createImageSource( self.layer, [self.ss] )
self.sims.register(self.layer, self.ims)
self.scene = ImageScene2D(PositionModel(), (0,0,0), preemptive_fetch_number=0)
self.scene.setCacheSize(1)
self.scene.stackedImageSources = self.sims
self.scene.dataShape = (30,30)
def tearDown( self ):
if self.scene._tileProvider:
self.scene._tileProvider.notifyThreadsToStop()
self.scene._tileProvider.joinThreads()
def renderScene( self, s, exportFilename=None, joinRendering=True):
img = QImage(30,30,QImage.Format_ARGB32_Premultiplied)
img.fill(Qt.white)
p = QPainter(img)
s.render(p) #trigger a rendering of the whole scene
if joinRendering:
#wait for all the data to arrive
s.joinRendering()
#finally, render everything
s.render(p)
p.end()
if exportFilename is not None:
img.save(exportFilename)
return byte_view(img)
def testLazy( self ):
for i in range(3):
self.op.setConstant(i)
aimg = self.renderScene(self.scene, "/tmp/a_%03d.png" % i)
assert numpy.all(aimg[:,:,0] == i), "!= %d, [0,0,0]=%d" % (i, aimg[0,0,0])
self.op.setConstant(42)
self.op.setDelay(1)
aimg = self.renderScene(self.scene, joinRendering=False, exportFilename="/tmp/x_%03d.png" % i)
#this should be "i", not 255 (the default background for the imagescene)
assert numpy.all(aimg[:,:,0] == i), "!= %d, [0,0,0]=%d" % (i, aimg[0,0,0])