def set_path_from_coordinates(self, x, y):
x_fwd = x
x_rev = x_fwd[::-1]
x = numpy.concatenate([x_fwd, x_rev])
y_fwd = y
y_rev = y_fwd[::-1]
y = numpy.concatenate([y_fwd, y_rev])
path = arrayToQPath(x, y)
self.setPath(path)
def test_arrayToQPath(xs, ys, connect, expected):
path = arrayToQPath(xs, ys, connect=connect)
for i in range(path.elementCount()):
with suppress(NameError):
# nan elements add two line-segments, for simplicity of test config
# we can ignore the second segment
if (eq(element.x, np.nan) or eq(element.y, np.nan)):
continue
element = path.elementAt(i)
assert eq(expected[i], (element.type, element.x, element.y))
def set_path_from_coordinates(self, x, y):
# TODO: Going back along the path to avoid creation of an area by the automatically closing path may not be the
# best solution...
x[:] = [i + 0.5 for i in x]
y[:] = [i + 0.5 for i in y]
x_fwd = x
x_rev = x_fwd[::-1]
x = numpy.concatenate([x_fwd, x_rev])
y_fwd = y
y_rev = y_fwd[::-1]
y = numpy.concatenate([y_fwd, y_rev])
path = arrayToQPath(x, y)
self.setPath(path)
def set_path_from_coordinates(self, x, y):
# TODO: Going back along the path to avoid creation of an area by the automatically closing path may not be the
# best solution...
x[:] = [i + 0.5 for i in x]
y[:] = [i + 0.5 for i in y]
x_fwd = x
x_rev = x_fwd[::-1]
x = numpy.concatenate([x_fwd, x_rev])
y_fwd = y
y_rev = y_fwd[::-1]
y = numpy.concatenate([y_fwd, y_rev])
path = arrayToQPath(x, y)
self.setPath(path)
def generatePath(self, x, y):
if self.opts['stepMode']:
## each value in the x/y arrays generates 2 points.
x2 = np.empty((len(x),2), dtype=x.dtype)
x2[:] = x[:,np.newaxis]
if self.opts['fillLevel'] is None:
x = x2.reshape(x2.size)[1:-1]
y2 = np.empty((len(y),2), dtype=y.dtype)
y2[:] = y[:,np.newaxis]
y = y2.reshape(y2.size)
else:
## If we have a fill level, add two extra points at either end
x = x2.reshape(x2.size)
y2 = np.empty((len(y)+2,2), dtype=y.dtype)
y2[1:-1] = y[:,np.newaxis]
y = y2.reshape(y2.size)[1:-1]
y[0] = self.opts['fillLevel']
y[-1] = self.opts['fillLevel']
path = fn.arrayToQPath(x, y, connect='all')
return path
# print "MyPathItem right click event detected!"
pen = QPen(QColor(255, 255, 0))
pen.setWidth(5)
self.setPen(pen)
app = QtGui.QApplication([])
v = Viewer()
xFwd = numpy.array([10, 20, 40, 80])
xRev = xFwd[::-1]
x = numpy.concatenate([xFwd, xRev])
yFwd = numpy.array([80, 90, 100, 110])
yRev = yFwd[::-1]
y = numpy.concatenate([yFwd, yRev])
path1 = arrayToQPath(x, y)
item1 = ClickablePathItem()
item1.setPath(path1)
# Create images
back = (numpy.ones((100, 200, 300)) * 0).astype(numpy.uint8)
back[0:60, 0:60, 0:60] = 255
back[40:80, 40:80, 40:80] = 120
back[40:100, 40:100, 0:40] = 80
back[0:45, 50:100, 0:100] = 200
ol = (numpy.zeros((100, 200, 300))).astype(numpy.uint8)
# ol[0:99, 0:99, 0:99] = 120
# ol[0:99, 120:140, 0:99] = 255
ol[:] = back
back.shape = (1,)+back.shape+(1,)
# #
# # s = (raw/64).astype(numpy.uint8)
#
#
# def onClick(layer, pos5D, pos):
# print "here i am: ", pos5D, s[pos5D]
#
# l2 = v.addColorTableLayer(ol, clickFunctor=onClick, name="thresh")
# l2.colortableIsRandom = True
# l2.zeroIsTransparent = True
# l2.visible = True
#
# # v.addClickableSegmentationLayer(s, "click it", direct=True)
x = numpy.array([200, 200, 200, 200])
y = numpy.array([10, 100, 200, 300])
qpp = arrayToQPath(x, y)
painter = QtGui.QPainter()
painter.begin(v)
painter.fillRect(0, 0, 100, 100, Qt.Qt.red)
painter.setPen(
QtGui.QPen(QtGui.QColor(0, 100, 100), 1, Qt.Qt.SolidLine, Qt.Qt.FlatCap,
Qt.Qt.MiterJoin))
painter.setBrush(QtGui.QColor(122, 163, 39))
painter.drawPath(qpp)
painter.end()
v.setWindowTitle("streaming viewer")
v.showMaximized()
app.exec_()
# path1 = QPainterPath() # path1.addRect(20, 20, 60, 60) path2 = QPainterPath() path2.moveTo(0, 0) path2.cubicTo(99, 0, 50, 50, 99, 99) path2.cubicTo(0, 99, 50, 50, 0, 0) xFwd = numpy.array([10, 20, 40, 80]) xRev = xFwd[::-1] x = numpy.concatenate([xFwd, xRev]) yFwd = numpy.array([80, 90, 100, 110]) yRev = yFwd[::-1] y = numpy.concatenate([yFwd, yRev]) print x, y path1 = arrayToQPath(x, y) # path1 = QPainterPath() # poly = QPolygonF() # poly.append(QPointF(10, 80)) # poly.append(QPointF(20, 90)) # poly.append(QPointF(40, 100)) # poly.append(QPointF(80, 110)) # path1.addPolygon(poly) item1 = MyPathItem() item1.setPath(path1) item1.setPen(QtGui.QPen(QColor(255, 255, 0))) item1.setBrush(QBrush(Qt.TransparentMode)) # scene.addPath(path)