import matplotlib.pyplot as plt
import numpy as np
from matplotlib.widgets import RectangleSelector, EllipseSelector
from rofunc.utils.logger.beauty_logger import beauty_print
[docs]def mouse_click_coords(fig, ax, point_style=""):
"""
Get mouse click coordinates on a figure.
:param fig: figure object
:param ax: axes object
:return: coordinates
"""
coords = []
beauty_print(f"Click on the figure to get {point_style} coordinates. Press ESC to exit.", type="module")
# beauty_print("How many coordinates do you want to get?\n"
# "Input a number: ")
# coords_num = int(input())
# if coords_num == 0:
# return []
def onclick(event):
ix, iy = event.xdata, event.ydata
beauty_print(f'x = {ix}, y = {iy}')
coords.append((ix, iy))
ax.scatter(np.array(coords)[:, 0], np.array(coords)[:, 1], color='green', marker='.', s=10, linewidth=1.25)
fig.canvas.draw()
return coords
def onpress(event):
if event.key == "escape":
fig.canvas.mpl_disconnect(cid)
beauty_print('Got all coordinates, closing figure...')
plt.pause(1)
plt.close(fig)
return coords
cid = fig.canvas.mpl_connect('button_press_event', onclick)
fig.canvas.mpl_connect('key_press_event', onpress)
return coords
[docs]def mouse_select_rec_region(fig, ax):
"""
Select a rectangle region with mouse.
:param fig: figure object
:param ax: axes object
:return: coordinates of the bbox
"""
beauty_print("Select a region with mouse. Press ESC to exit.", type="module")
bbox = []
def select_callback(eclick, erelease):
x1, y1 = eclick.xdata, eclick.ydata
x2, y2 = erelease.xdata, erelease.ydata
beauty_print(f"({x1:3.2f}, {y1:3.2f}) --> ({x2:3.2f}, {y2:3.2f})")
beauty_print(f"bbox corners: {selector.corners}")
bbox.append(x1)
bbox.append(y1)
bbox.append(x2)
bbox.append(y2)
return np.array(bbox)
def toggle_selector(event):
selector.set_active(True)
if event.key == "escape":
beauty_print('RectangleSelector deactivated.')
selector.set_active(False)
plt.close(fig)
return np.array(bbox)
selector = RectangleSelector(
ax, select_callback,
useblit=True,
button=[1, 3], # disable middle button
minspanx=5, minspany=5,
spancoords='pixels',
interactive=True)
fig.canvas.mpl_connect('key_press_event', toggle_selector)
return bbox
[docs]def mouse_select_ellip_region(fig, ax):
"""
Select an ellipse region with mouse.
:param fig: figure object
:param ax: axes object
:return: coordinates of the bbox
"""
beauty_print("Select a region with mouse. Press ESC to exit.", type="module")
x1, y1, x2, y2 = 0, 0, 0, 0
def select_callback(eclick, erelease):
global x1, y1, x2, y2
x1, y1 = eclick.xdata, eclick.ydata
x2, y2 = erelease.xdata, erelease.ydata
beauty_print(f"({x1:3.2f}, {y1:3.2f}) --> ({x2:3.2f}, {y2:3.2f})")
beauty_print(f"bbox corners: {selector.corners}")
def toggle_selector(event):
selector.set_active(True)
if event.key == "escape":
beauty_print('RectangleSelector deactivated.')
selector.set_active(False)
plt.close(fig)
selector = EllipseSelector(
ax, select_callback,
useblit=True,
button=[1, 3], # disable middle button
minspanx=5, minspany=5,
spancoords='pixels',
interactive=True)
fig.canvas.mpl_connect('key_press_event', toggle_selector)
return np.array([x1, y1, x2, y2])
if __name__ == '__main__':
x = np.arange(-10, 10)
y = x ** 2
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(x, y)
cxc = mouse_click_coords(fig, ax)
plt.show()
print(cxc)
# fig = plt.figure(layout='constrained')
# ax = fig.add_subplot(111)
# N = 100000 # If N is large one can see improvement by using blitting.
# x = np.linspace(0, 10, N)
#
# ax.plot(x, np.sin(2 * np.pi * x)) # plot something
# mouse_select_ellip_region(fig, ax)
# plt.show()
