Hello!
I'm trying to draw on an ImageItem with a DrawKernel, but it's weird, when
I drag the mouse right the drawing line goes up and when I drag it down it
paints to the left:-D Here's my code. I would really appreciate help as I
have no idea what I'm doing wrong:-D
Maria
import sys, os, pathlib, warnings, datetime, tempfile, glob, time
import gc
from natsort import natsorted
from tqdm import tqdm
from PyQt5 import QtGui, QtCore, Qt, QtWidgets
import pyqtgraph as pg
from pyqtgraph import GraphicsScene
import numpy as np
import cv2
from scipy.ndimage import gaussian_filter
import sys
import h5py
import time
from matplotlib import image
from pyqtgraph import Point
class MainW(QtGui.QMainWindow):
def __init__(self, image=None):
super(MainW, self).__init__()
pg.setConfigOptions(imageAxisOrder="col-major")
self.setGeometry(50, 50, 1200, 1000)
self.setStyleSheet("QMainWindow {background: 'black';}")
self.cwidget = QtGui.QWidget(self)
self.l0 = QtGui.QGridLayout()
self.cwidget.setLayout(self.l0)
self.setCentralWidget(self.cwidget)
self.win = pg.GraphicsLayoutWidget()
#self.l0.addWidget(self.win, 0,3, b, 20)
self.l0.addWidget(self.win)
#self.show()
self.load_image()
self.make_viewbox()
self.set_image()
self.win.show()
def load_image(self):
filename='C:/Users/koester_lab/Documents/Maria/registered/fish2_6dpf_medium_aligned.h5'
filename_='C:/Users/koester_lab/Documents/im.jpg'
with h5py.File(filename, "r") as f:
# List all groups
print("Keys: %s" % f.keys())
start=time.time()
data=f['data'][100,10,:,:]
end=time.time()
print('Time to load file: ',end-start)
print(data.shape)
self.data=np.array(data).astype('float64')
#self.data=image.imread(filename_)
print(np.max(self.data))
print(np.min(self.data))
self.data *= 255.0/self.data.max()
print(np.max(self.data))
print(np.min(self.data))
def set_image(self):
self.img.setImage(self.data, autoLevels=False,
lut=None,levels=[0,255])
self.show()
def make_viewbox(self):
self.p0 = pg.ViewBox()
self.brush_size=3
self.win.addItem(self.p0, 0, 0)
self.p0.setMenuEnabled(False)
self.p0.setMouseEnabled(x=True, y=True)
self.p0.setAspectLocked(True)
self.img = ImageDraw(viewbox=self.p0, parent=self)
self.img.autoDownsample = False
self.p0.scene().contextMenuItem = self.p0
#self.p0.setMouseEnabled(x=False,y=False)
self.Ly,self.Lx = 512,512
kern = 100*np.ones((10,10))
self.img.setDrawKernel(kern, mask=kern, center=(1,1), mode='add')
self.p0.addItem(self.img)
class ImageDraw(pg.ImageItem):
"""
**Bases:** :class:`GraphicsObject <pyqtgraph.GraphicsObject>`
GraphicsObject displaying an image. Optimized for rapid update (ie
video display).
This item displays either a 2D numpy array (height, width) or
a 3D array (height, width, RGBa). This array is optionally scaled (see
:func:`setLevels <pyqtgraph.ImageItem.setLevels>`) and/or colored
with a lookup table (see :func:`setLookupTable
<pyqtgraph.ImageItem.setLookupTable>`)
before being displayed.
ImageItem is frequently used in conjunction with
:class:`HistogramLUTItem <pyqtgraph.HistogramLUTItem>` or
:class:`HistogramLUTWidget <pyqtgraph.HistogramLUTWidget>` to provide a
GUI
for controlling the levels and lookup table used to display the image.
"""
def __init__(self, image=None, viewbox=None, parent=None, **kargs):
super(ImageDraw, self).__init__()
self.autoDownsample = False
self.axisOrder = 'row-major'
self.removable = False
self.parent = parent
#kernel[1,1] = 1
#self.setDrawKernel(kernel_size=self.parent.brush_size)
def mouseDragEvent(self, ev):
if ev.button() != QtCore.Qt.LeftButton:
ev.ignore()
return
elif self.drawKernel is not None:
ev.accept()
self.drawAt(ev.pos(), ev)
def mouseClickEvent(self, ev):
print(ev.pos())
def run(image=None):
# Always start by initializing Qt (only once per application)
warnings.filterwarnings("ignore")
app = QtGui.QApplication(sys.argv)
main_window=MainW(image=image)
main_window.show()
ret = app.exec_()
#sys.exit(ret)
run()
--
You received this message because you are subscribed to the Google Groups
"pyqtgraph" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/pyqtgraph/ec61b599-9fe5-47f6-b3db-27b56b1a5f10n%40googlegroups.com.
