# check to see if the left mouse button was released # (x, y) coordinates and indicate that cropping is being # if the left mouse button was clicked, record the starting # grab references to the global variables # whether cropping is being performed or notĭef shape_selection( event, x, y, flags, param):
# initialize the list of reference points and boolean indicating Run the code : python capture_events.py -image image_example.jpg # Capture the mouse click events in Python and OpenCV Learn more about bidirectional Unicode characters To review, open the file in an editor that reveals hidden Unicode characters. That's all the ways I know of to incorporate "click." If you know of more, please feel free to tell us in the comments.ĭon't forget to have fun, hack and remix.This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. In the pic above, I have the jumper wire in "right click." You can also control click (and all of your mouse movements!) by using a jumper wire in the far right header on the back of your board. To access the stage for coding, make sure the Stage is highlighted blue as in picture 4.Īnother "click" on the Makey Makey controller In Scratch 3, the Stage and backdrops have moved the right hand side of your screen. Read more about the "when Stage clicked" block on the Scratch wiki.
The stage is where you can change and update backdrops. You will only see this block in "events" if you click on "Stage" to the left of your sprites. So put your game in full screen mode, and you should be able to click away! This event will trigger no matter where you click on the backdrop of your Scratch game. One of the easiest ways to control the mouse click is to use the "when Stage clicked" block. Read more about using the "mouse down" block on the Scratch wiki. To have more control over when you want the "mouse down" to have an effect, try using the broadcasting blocks to trigger the event. But note the way I've coded it once I click the "green flag" my sprite will start spinning. You can also use the "mouse down" sensing block, to control a sprite anywhere on the screen. Read more about the "when this sprite clicked" block on the Scratch wiki. However, there are two other ways to use click that might be useful if you want to use this effect on something in your game that doesn't require you to hover over it first.
Since this is true, it would probably be best to only use this on a stationary sprite if you want to use "click" input on the Makey Makey. However, since, your mouse will need to actually click on the sprite, you would have to hover your mouse over the sprite for this effect to work. To control click, you can use the "when this sprite clicked" block located in the "event" palette.
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