[solved] define regions of interest for mouseclicks

Comments

• eduard

  January 2015 edited 3:42AM

  Hi Tabea,

  Don't worry, if you don't know how to program yet. Python is rather easy to learn and you'll be able to do quite a lot after a short while. I'd like to suggest, that you give it a try and do a few online tutorials (there are plenty good ones around, just google).

  Regarding your question, the general idea of what you want is following:

  1) Sample current mouse position and waiting for a click

  2) As soon as mouse gets clicked, take its position and check whether this position lies within the boundaries of one of the 3 ROIs

  2a) Check the first ROI whether it got clicked:
  If the current x-coordinate is bigger the the lower x-boundary AND
  smaller than the upper x-boundary AND the same for the y-coordinates. If every condition is true, you know this ROI was clicked, if at least one of them is false, proceed with the next ROI

  2b) same as 2a, just with different coordinates.

  2c) same as 2a, just with different coordinates.

  In a slightly more pythonic way, it will look something like this:

  # import mouse module
  from openexp.mouse import mouse
  
  # initialize a mouse object
  my_mouse = mouse(exp)
  
  # define helper variables to indicate which ROI was clicked
  ROI1_clicked, ROI2_clicked, ROI3_clicked = False, False, False
  while True:
          # next line corresponds to first point above (sampling and waiting for a click)
          button, position, timestamp = my_mouse.get_click(timeout=20)
          # timeout defines, how long you will wait for a response
  
          # next lines correspond to 2nd point (Checking whether coordinates
          # lie within ROI
          if position[0] >= ROI1_x_min and position[0] <= ROI1_x_max  and \
             position[1] >= ROI1_y_min and position[1] <= ROI1_y_max :
                  ROI1_clicked = True
                  break
          elif ...same for ROI2_x and ROI2_y...:
                  ROI2_clicked = True
                  break
          elif ...same for ROI3_x and ROI3_y...:
                  ROI3_clicked = True
                  break
  
  

  From that point you continue running your script depending on which ROI was clicked.

  It may seem complicated, but it actually isn't. Give it a try, if you need again help, just ask.

  Good luck,

  Eduard

  
• tabeaH

  February 2015 edited February 2015

  Hello,

  thank you for encouraging me to give Python a try! It was actually quite fun (regarding my blank despair in the beginning).

  The script I finally used looked like this:

  # define ROIs
  ROI_y_min = 546
  ROI_y_max ((and so on))
  
  # import mouse module
  from openexp.mouse import mouse
  
  # initialize a mouse object
  my_mouse = mouse(exp)
  my_mouse.set_visible()
  
  # define helper variables to indicate which ROI was clicked
  ROI1_clicked = False
  ROI2_clicked = False
  ROI3_clicked = False
  
  while True:
      # next line corresponds to first point above (sampling and waiting for a click)
      click, position, timestamp = my_mouse.get_click(timeout=20) 
      if click == None:
          print('No click')
  
      elif ROI1_x_min <= position[0] <= ROI1_x_max and ROI_y_min <= position[1] <= ROI_y_max :
          ROI1_clicked = True
          break
  
      elif ROI2_x_min <= position[0] <= ROI2_x_max and ROI_y_min <= position[1] <= ROI_y_max :
          ROI2_clicked = True
          break
  
      elif ROI3_x_min <= position[0] <= ROI3_x_max and ROI_y_min <= position[1] <= ROI_y_max :
          ROI3_clicked = True
          break
  
  exp.set('ROI1_clicked', ROI1_clicked)
  exp.set('ROI2_clicked', ROI2_clicked)
  exp.set('ROI3_clicked', ROI3_clicked)
  exp.set('ans_time', timestamp)
  
• eduard

  February 2015 edited 3:42AM

  Great to hear. And thanks for sharing your solution.

  Eduard