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Calculating disctance between 2 coordinates using click events
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I can display an image on my panel, what I need is to click on 2 spots in the picture and calculate the distance between them. I am having trouble with the event handler and how to use it similarly to a scanner in Java. For example, if I run the program and click once somewhere in the image, it runs all 3 methods at once which leads to give an error.
root = Tk()
img = ImageTk.PhotoImage(Image.open("target.PNG"))
#img = cv2.imread("target.PNG")
panel = Label(root, image = img)
panel.pack(side = "bottom", fill = "both", expand = "yes")
def leftClick(event):
global x0,y0
x0 = event.x
y0 = event.y
return x0, y0
panel.bind("<Button-1>", leftClick)
def rightClick(event):
global x1,y1
x1 = event.x
y1 = event.y
return x1, y1
panel.bind("<Button-1>", rightClick)
def getDistance(event):
distance = math.sqrt( ((x0-x1)**2)+((y0-y1)**2) )
print(distance)
panel.bind("<Button-1>", getDistance)
root.mainloop()
What I'm looking for is to execute each step once at a time. The final step to calculate the distance can be done outside a method it doesn't really matter. I just need to get the coordinates to work first. Please let me know how I could proceed to solve this.
python tkinter
edited Jan 3 at 5:00
eyllanesc
86.5k103564
asked Jan 3 at 4:43
Alfred RothlesbergAlfred Rothlesberg
133
add a comment |
I can display an image on my panel, what I need is to click on 2 spots in the picture and calculate the distance between them. I am having trouble with the event handler and how to use it similarly to a scanner in Java. For example, if I run the program and click once somewhere in the image, it runs all 3 methods at once which leads to give an error.
root = Tk()
img = ImageTk.PhotoImage(Image.open("target.PNG"))
#img = cv2.imread("target.PNG")
panel = Label(root, image = img)
panel.pack(side = "bottom", fill = "both", expand = "yes")
def leftClick(event):
global x0,y0
x0 = event.x
y0 = event.y
return x0, y0
panel.bind("<Button-1>", leftClick)
def rightClick(event):
global x1,y1
x1 = event.x
y1 = event.y
return x1, y1
panel.bind("<Button-1>", rightClick)
def getDistance(event):
distance = math.sqrt( ((x0-x1)**2)+((y0-y1)**2) )
print(distance)
panel.bind("<Button-1>", getDistance)
root.mainloop()
What I'm looking for is to execute each step once at a time. The final step to calculate the distance can be done outside a method it doesn't really matter. I just need to get the coordinates to work first. Please let me know how I could proceed to solve this.
python tkinter
edited Jan 3 at 5:00
eyllanesc
86.5k103564
asked Jan 3 at 4:43
Alfred RothlesbergAlfred Rothlesberg
133
The Pythagoras theorem is mandatory to have two components. You can calculate the measurement value in each second click. You must collect the clicked points in a list, and then scroll the list to the left each click.
– dsgdfg
Jan 3 at 5:20
add a comment |
I can display an image on my panel, what I need is to click on 2 spots in the picture and calculate the distance between them. I am having trouble with the event handler and how to use it similarly to a scanner in Java. For example, if I run the program and click once somewhere in the image, it runs all 3 methods at once which leads to give an error.
root = Tk()
img = ImageTk.PhotoImage(Image.open("target.PNG"))
#img = cv2.imread("target.PNG")
panel = Label(root, image = img)
panel.pack(side = "bottom", fill = "both", expand = "yes")
def leftClick(event):
global x0,y0
x0 = event.x
y0 = event.y
return x0, y0
panel.bind("<Button-1>", leftClick)
def rightClick(event):
global x1,y1
x1 = event.x
y1 = event.y
return x1, y1
panel.bind("<Button-1>", rightClick)
def getDistance(event):
distance = math.sqrt( ((x0-x1)**2)+((y0-y1)**2) )
print(distance)
panel.bind("<Button-1>", getDistance)
root.mainloop()
What I'm looking for is to execute each step once at a time. The final step to calculate the distance can be done outside a method it doesn't really matter. I just need to get the coordinates to work first. Please let me know how I could proceed to solve this.
python tkinter
edited Jan 3 at 5:00
eyllanesc
86.5k103564
asked Jan 3 at 4:43
Alfred RothlesbergAlfred Rothlesberg
133
I can display an image on my panel, what I need is to click on 2 spots in the picture and calculate the distance between them. I am having trouble with the event handler and how to use it similarly to a scanner in Java. For example, if I run the program and click once somewhere in the image, it runs all 3 methods at once which leads to give an error.
root = Tk()
img = ImageTk.PhotoImage(Image.open("target.PNG"))
#img = cv2.imread("target.PNG")
panel = Label(root, image = img)
panel.pack(side = "bottom", fill = "both", expand = "yes")
def leftClick(event):
global x0,y0
x0 = event.x
y0 = event.y
return x0, y0
panel.bind("<Button-1>", leftClick)
def rightClick(event):
global x1,y1
x1 = event.x
y1 = event.y
return x1, y1
panel.bind("<Button-1>", rightClick)
def getDistance(event):
distance = math.sqrt( ((x0-x1)**2)+((y0-y1)**2) )
print(distance)
panel.bind("<Button-1>", getDistance)
root.mainloop()
What I'm looking for is to execute each step once at a time. The final step to calculate the distance can be done outside a method it doesn't really matter. I just need to get the coordinates to work first. Please let me know how I could proceed to solve this.
python tkinter
python tkinter
edited Jan 3 at 5:00
eyllanesc
86.5k103564
asked Jan 3 at 4:43
Alfred RothlesbergAlfred Rothlesberg
133
edited Jan 3 at 5:00
eyllanesc
86.5k103564
asked Jan 3 at 4:43
Alfred RothlesbergAlfred Rothlesberg
133
edited Jan 3 at 5:00
eyllanesc
86.5k103564
edited Jan 3 at 5:00
eyllanesc
86.5k103564
edited Jan 3 at 5:00
eyllanesc
86.5k103564
86.5k103564
asked Jan 3 at 4:43
Alfred RothlesbergAlfred Rothlesberg
133
asked Jan 3 at 4:43
Alfred RothlesbergAlfred Rothlesberg
133
asked Jan 3 at 4:43
Alfred RothlesbergAlfred Rothlesberg
133
133
The Pythagoras theorem is mandatory to have two components. You can calculate the measurement value in each second click. You must collect the clicked points in a list, and then scroll the list to the left each click.
– dsgdfg
Jan 3 at 5:20
add a comment |
The Pythagoras theorem is mandatory to have two components. You can calculate the measurement value in each second click. You must collect the clicked points in a list, and then scroll the list to the left each click.
– dsgdfg
Jan 3 at 5:20
The Pythagoras theorem is mandatory to have two components. You can calculate the measurement value in each second click. You must collect the clicked points in a list, and then scroll the list to the left each click.
– dsgdfg
Jan 3 at 5:20
The Pythagoras theorem is mandatory to have two components. You can calculate the measurement value in each second click. You must collect the clicked points in a list, and then scroll the list to the left each click.
– dsgdfg
Jan 3 at 5:20
add a comment |
2 Answers
2
active
oldest
votes
You Can Try This Two:
Process 1(Uses mouse left click, right click, middle(scroll) click):
The following code takes
(x0, y0) from mouse-left-click
(x1, y1) from mouse-right-click
and then prints distance between them on mouse-middle(scroll)-click
from tkinter import *
from PIL import ImageTk, Image
import math
root = Tk()
img = ImageTk.PhotoImage(Image.open("Logo.png"))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
x0 = 0
y0 = 0
x1 = 0
y1 = 0
def leftClick(event):
global x0, y0
x0 = event.x
y0 = event.y
# return [x0, y0]
panel.bind("<Button-1>", leftClick)
def rightClick(event):
global x1, y1
x1 = event.x
y1 = event.y
# return x1, y1
panel.bind("<Button-3>", rightClick)
def getDistance(event):
global x0, y0, x1, y1
distance = math.sqrt(((x0 - x1)**2)+((y0 - y1)**2))
print(distance)
panel.bind("<Button-2>", getDistance)
root.mainloop()
Process 2(Uses only mouse left click):
The following code takes
(x0, y0) from first mouse-left-click
(x1, y1) from second mouse-left-click
and then prints distance between them on third mouse-left-click
from tkinter import *
from PIL import ImageTk, Image
import math
root = Tk()
img = ImageTk.PhotoImage(Image.open("Logo.png"))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
counter = 0
x0 = 0
x1 = 0
y0 = 0
y1 = 0
def getDistance(event):
global counter, x0, y0, x1, y1
if counter == 0:
x0 = event.x
y0 = event.y
counter += 1
elif counter == 1:
x1 = event.x
y1 = event.y
counter += 1
elif counter == 2:
distance = math.sqrt(((x0 - x1)**2)+((y0 - y1)**2))
print(distance)
counter = 0
panel.bind("<Button-1>", getDistance)
root.mainloop()
answered Jan 3 at 5:45
Partho63Partho63
2,01211123
add a comment |
Below is a demo for count distance from a start point to a end point, which takes a DRAG operation with mouse left button.
import tkinter as tk
from PIL import ImageTk, Image
import math
start_point_x, start_point_y, end_point_x, end_point_y = 0, 0, 0, 0
def mouse_left_down_detection(event):
global start_point_x, start_point_y
start_point_x = event.x
start_point_y = event.y
def mouse_left_release_detection(event):
global end_point_x, end_point_y
end_point_x = event.x
end_point_y = event.y
print(start_point_x, start_point_y, end_point_x, end_point_y)
print(get_instance(start_point_x, start_point_y, end_point_x, end_point_y))
def get_instance(x1, y1, x2, y2):
return math.sqrt((pow(abs(x2-x1), abs(x2-x1))+pow(abs(y2-y1), abs(y2-y1))))
image_path = "andy.jpg"
root = tk.Tk()
img = ImageTk.PhotoImage(Image.open(image_path))
panel = tk.Label(root, image=img)
# Bind event mouse left down
panel.bind("<Button-1>", mouse_left_down_detection)
# Bind event mouse left release and calculate distance
panel.bind("<ButtonRelease-1>", mouse_left_release_detection)
panel.pack(side="bottom", fill="both", expand="yes")
root.mainloop()
answered Jan 3 at 6:04
Lau RealLau Real
1378
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
You Can Try This Two:
Process 1(Uses mouse left click, right click, middle(scroll) click):
The following code takes
(x0, y0) from mouse-left-click
(x1, y1) from mouse-right-click
and then prints distance between them on mouse-middle(scroll)-click
from tkinter import *
from PIL import ImageTk, Image
import math
root = Tk()
img = ImageTk.PhotoImage(Image.open("Logo.png"))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
x0 = 0
y0 = 0
x1 = 0
y1 = 0
def leftClick(event):
global x0, y0
x0 = event.x
y0 = event.y
# return [x0, y0]
panel.bind("<Button-1>", leftClick)
def rightClick(event):
global x1, y1
x1 = event.x
y1 = event.y
# return x1, y1
panel.bind("<Button-3>", rightClick)
def getDistance(event):
global x0, y0, x1, y1
distance = math.sqrt(((x0 - x1)**2)+((y0 - y1)**2))
print(distance)
panel.bind("<Button-2>", getDistance)
root.mainloop()
Process 2(Uses only mouse left click):
The following code takes
(x0, y0) from first mouse-left-click
(x1, y1) from second mouse-left-click
and then prints distance between them on third mouse-left-click
from tkinter import *
from PIL import ImageTk, Image
import math
root = Tk()
img = ImageTk.PhotoImage(Image.open("Logo.png"))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
counter = 0
x0 = 0
x1 = 0
y0 = 0
y1 = 0
def getDistance(event):
global counter, x0, y0, x1, y1
if counter == 0:
x0 = event.x
y0 = event.y
counter += 1
elif counter == 1:
x1 = event.x
y1 = event.y
counter += 1
elif counter == 2:
distance = math.sqrt(((x0 - x1)**2)+((y0 - y1)**2))
print(distance)
counter = 0
panel.bind("<Button-1>", getDistance)
root.mainloop()
answered Jan 3 at 5:45
Partho63Partho63
2,01211123
add a comment |
You Can Try This Two:
Process 1(Uses mouse left click, right click, middle(scroll) click):
The following code takes
(x0, y0) from mouse-left-click
(x1, y1) from mouse-right-click
and then prints distance between them on mouse-middle(scroll)-click
from tkinter import *
from PIL import ImageTk, Image
import math
root = Tk()
img = ImageTk.PhotoImage(Image.open("Logo.png"))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
x0 = 0
y0 = 0
x1 = 0
y1 = 0
def leftClick(event):
global x0, y0
x0 = event.x
y0 = event.y
# return [x0, y0]
panel.bind("<Button-1>", leftClick)
def rightClick(event):
global x1, y1
x1 = event.x
y1 = event.y
# return x1, y1
panel.bind("<Button-3>", rightClick)
def getDistance(event):
global x0, y0, x1, y1
distance = math.sqrt(((x0 - x1)**2)+((y0 - y1)**2))
print(distance)
panel.bind("<Button-2>", getDistance)
root.mainloop()
Process 2(Uses only mouse left click):
The following code takes
(x0, y0) from first mouse-left-click
(x1, y1) from second mouse-left-click
and then prints distance between them on third mouse-left-click
from tkinter import *
from PIL import ImageTk, Image
import math
root = Tk()
img = ImageTk.PhotoImage(Image.open("Logo.png"))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
counter = 0
x0 = 0
x1 = 0
y0 = 0
y1 = 0
def getDistance(event):
global counter, x0, y0, x1, y1
if counter == 0:
x0 = event.x
y0 = event.y
counter += 1
elif counter == 1:
x1 = event.x
y1 = event.y
counter += 1
elif counter == 2:
distance = math.sqrt(((x0 - x1)**2)+((y0 - y1)**2))
print(distance)
counter = 0
panel.bind("<Button-1>", getDistance)
root.mainloop()
answered Jan 3 at 5:45
Partho63Partho63
2,01211123
add a comment |
You Can Try This Two:
Process 1(Uses mouse left click, right click, middle(scroll) click):
The following code takes
(x0, y0) from mouse-left-click
(x1, y1) from mouse-right-click
and then prints distance between them on mouse-middle(scroll)-click
from tkinter import *
from PIL import ImageTk, Image
import math
root = Tk()
img = ImageTk.PhotoImage(Image.open("Logo.png"))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
x0 = 0
y0 = 0
x1 = 0
y1 = 0
def leftClick(event):
global x0, y0
x0 = event.x
y0 = event.y
# return [x0, y0]
panel.bind("<Button-1>", leftClick)
def rightClick(event):
global x1, y1
x1 = event.x
y1 = event.y
# return x1, y1
panel.bind("<Button-3>", rightClick)
def getDistance(event):
global x0, y0, x1, y1
distance = math.sqrt(((x0 - x1)**2)+((y0 - y1)**2))
print(distance)
panel.bind("<Button-2>", getDistance)
root.mainloop()
Process 2(Uses only mouse left click):
The following code takes
(x0, y0) from first mouse-left-click
(x1, y1) from second mouse-left-click
and then prints distance between them on third mouse-left-click
from tkinter import *
from PIL import ImageTk, Image
import math
root = Tk()
img = ImageTk.PhotoImage(Image.open("Logo.png"))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
counter = 0
x0 = 0
x1 = 0
y0 = 0
y1 = 0
def getDistance(event):
global counter, x0, y0, x1, y1
if counter == 0:
x0 = event.x
y0 = event.y
counter += 1
elif counter == 1:
x1 = event.x
y1 = event.y
counter += 1
elif counter == 2:
distance = math.sqrt(((x0 - x1)**2)+((y0 - y1)**2))
print(distance)
counter = 0
panel.bind("<Button-1>", getDistance)
root.mainloop()
answered Jan 3 at 5:45
Partho63Partho63
2,01211123
You Can Try This Two:
Process 1(Uses mouse left click, right click, middle(scroll) click):
The following code takes
(x0, y0) from mouse-left-click
(x1, y1) from mouse-right-click
and then prints distance between them on mouse-middle(scroll)-click
from tkinter import *
from PIL import ImageTk, Image
import math
root = Tk()
img = ImageTk.PhotoImage(Image.open("Logo.png"))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
x0 = 0
y0 = 0
x1 = 0
y1 = 0
def leftClick(event):
global x0, y0
x0 = event.x
y0 = event.y
# return [x0, y0]
panel.bind("<Button-1>", leftClick)
def rightClick(event):
global x1, y1
x1 = event.x
y1 = event.y
# return x1, y1
panel.bind("<Button-3>", rightClick)
def getDistance(event):
global x0, y0, x1, y1
distance = math.sqrt(((x0 - x1)**2)+((y0 - y1)**2))
print(distance)
panel.bind("<Button-2>", getDistance)
root.mainloop()
Process 2(Uses only mouse left click):
The following code takes
(x0, y0) from first mouse-left-click
(x1, y1) from second mouse-left-click
and then prints distance between them on third mouse-left-click
from tkinter import *
from PIL import ImageTk, Image
import math
root = Tk()
img = ImageTk.PhotoImage(Image.open("Logo.png"))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
counter = 0
x0 = 0
x1 = 0
y0 = 0
y1 = 0
def getDistance(event):
global counter, x0, y0, x1, y1
if counter == 0:
x0 = event.x
y0 = event.y
counter += 1
elif counter == 1:
x1 = event.x
y1 = event.y
counter += 1
elif counter == 2:
distance = math.sqrt(((x0 - x1)**2)+((y0 - y1)**2))
print(distance)
counter = 0
panel.bind("<Button-1>", getDistance)
root.mainloop()
answered Jan 3 at 5:45
Partho63Partho63
2,01211123
edited Jan 3 at 6:00
answered Jan 3 at 5:45
Partho63Partho63
2,01211123
answered Jan 3 at 5:45
Partho63Partho63
2,01211123
answered Jan 3 at 5:45
Partho63Partho63
2,01211123
2,01211123
add a comment |
add a comment |
Below is a demo for count distance from a start point to a end point, which takes a DRAG operation with mouse left button.
import tkinter as tk
from PIL import ImageTk, Image
import math
start_point_x, start_point_y, end_point_x, end_point_y = 0, 0, 0, 0
def mouse_left_down_detection(event):
global start_point_x, start_point_y
start_point_x = event.x
start_point_y = event.y
def mouse_left_release_detection(event):
global end_point_x, end_point_y
end_point_x = event.x
end_point_y = event.y
print(start_point_x, start_point_y, end_point_x, end_point_y)
print(get_instance(start_point_x, start_point_y, end_point_x, end_point_y))
def get_instance(x1, y1, x2, y2):
return math.sqrt((pow(abs(x2-x1), abs(x2-x1))+pow(abs(y2-y1), abs(y2-y1))))
image_path = "andy.jpg"
root = tk.Tk()
img = ImageTk.PhotoImage(Image.open(image_path))
panel = tk.Label(root, image=img)
# Bind event mouse left down
panel.bind("<Button-1>", mouse_left_down_detection)
# Bind event mouse left release and calculate distance
panel.bind("<ButtonRelease-1>", mouse_left_release_detection)
panel.pack(side="bottom", fill="both", expand="yes")
root.mainloop()
answered Jan 3 at 6:04
Lau RealLau Real
1378
add a comment |
Below is a demo for count distance from a start point to a end point, which takes a DRAG operation with mouse left button.
import tkinter as tk
from PIL import ImageTk, Image
import math
start_point_x, start_point_y, end_point_x, end_point_y = 0, 0, 0, 0
def mouse_left_down_detection(event):
global start_point_x, start_point_y
start_point_x = event.x
start_point_y = event.y
def mouse_left_release_detection(event):
global end_point_x, end_point_y
end_point_x = event.x
end_point_y = event.y
print(start_point_x, start_point_y, end_point_x, end_point_y)
print(get_instance(start_point_x, start_point_y, end_point_x, end_point_y))
def get_instance(x1, y1, x2, y2):
return math.sqrt((pow(abs(x2-x1), abs(x2-x1))+pow(abs(y2-y1), abs(y2-y1))))
image_path = "andy.jpg"
root = tk.Tk()
img = ImageTk.PhotoImage(Image.open(image_path))
panel = tk.Label(root, image=img)
# Bind event mouse left down
panel.bind("<Button-1>", mouse_left_down_detection)
# Bind event mouse left release and calculate distance
panel.bind("<ButtonRelease-1>", mouse_left_release_detection)
panel.pack(side="bottom", fill="both", expand="yes")
root.mainloop()
answered Jan 3 at 6:04
Lau RealLau Real
1378
add a comment |
Below is a demo for count distance from a start point to a end point, which takes a DRAG operation with mouse left button.
import tkinter as tk
from PIL import ImageTk, Image
import math
start_point_x, start_point_y, end_point_x, end_point_y = 0, 0, 0, 0
def mouse_left_down_detection(event):
global start_point_x, start_point_y
start_point_x = event.x
start_point_y = event.y
def mouse_left_release_detection(event):
global end_point_x, end_point_y
end_point_x = event.x
end_point_y = event.y
print(start_point_x, start_point_y, end_point_x, end_point_y)
print(get_instance(start_point_x, start_point_y, end_point_x, end_point_y))
def get_instance(x1, y1, x2, y2):
return math.sqrt((pow(abs(x2-x1), abs(x2-x1))+pow(abs(y2-y1), abs(y2-y1))))
image_path = "andy.jpg"
root = tk.Tk()
img = ImageTk.PhotoImage(Image.open(image_path))
panel = tk.Label(root, image=img)
# Bind event mouse left down
panel.bind("<Button-1>", mouse_left_down_detection)
# Bind event mouse left release and calculate distance
panel.bind("<ButtonRelease-1>", mouse_left_release_detection)
panel.pack(side="bottom", fill="both", expand="yes")
root.mainloop()
answered Jan 3 at 6:04
Lau RealLau Real
1378
Below is a demo for count distance from a start point to a end point, which takes a DRAG operation with mouse left button.
import tkinter as tk
from PIL import ImageTk, Image
import math
start_point_x, start_point_y, end_point_x, end_point_y = 0, 0, 0, 0
def mouse_left_down_detection(event):
global start_point_x, start_point_y
start_point_x = event.x
start_point_y = event.y
def mouse_left_release_detection(event):
global end_point_x, end_point_y
end_point_x = event.x
end_point_y = event.y
print(start_point_x, start_point_y, end_point_x, end_point_y)
print(get_instance(start_point_x, start_point_y, end_point_x, end_point_y))
def get_instance(x1, y1, x2, y2):
return math.sqrt((pow(abs(x2-x1), abs(x2-x1))+pow(abs(y2-y1), abs(y2-y1))))
image_path = "andy.jpg"
root = tk.Tk()
img = ImageTk.PhotoImage(Image.open(image_path))
panel = tk.Label(root, image=img)
# Bind event mouse left down
panel.bind("<Button-1>", mouse_left_down_detection)
# Bind event mouse left release and calculate distance
panel.bind("<ButtonRelease-1>", mouse_left_release_detection)
panel.pack(side="bottom", fill="both", expand="yes")
root.mainloop()
answered Jan 3 at 6:04
Lau RealLau Real
1378
answered Jan 3 at 6:04
Lau RealLau Real
1378
answered Jan 3 at 6:04
Lau RealLau Real
1378
answered Jan 3 at 6:04
Lau RealLau Real
1378
1378
add a comment |
add a comment |
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The Pythagoras theorem is mandatory to have two components. You can calculate the measurement value in each second click. You must collect the clicked points in a list, and then scroll the list to the left each click.
– dsgdfg
Jan 3 at 5:20