How to remove objects in my program using a right mouse click

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moria_0

How to remove objects in my program using a right mouse click

in Programming Questions • 4 months ago

I'm making a program where I can make pictures using circles. I've got the duplicating of the circles down packed using the left click, but I want to remove them when I right click on the circles. Below I've got the code there to create them using the left mouse click but I'm not sure what code I would put in there to remove them, help?

void mousePressed()

{

if (mouseButton == LEFT) {

int t = Balls.size();

for( int i=0; i < t; i++)

Balls.get(i).dragging();

} else {

}

Replies(4)

GoToLoop

Re: How to remove objects in my program using a right mouse click

4 months ago

You can use List's method remove(index) to delete an element number #index from it.

However, inside a loop, it has to have a backwards iteration!

Of course, to find out the correct index to remove, you have to check an object's screen location

to decide whether that 1 was right-clicked to be removed!

You can create a new check method for it inside the class.

moria_0

Re: How to remove objects in my program using a right mouse click

4 months ago

Well I have a grid, I have a permanent row of circles across the bottom of the grid and when I left click on any of the circles I can drag them and place them anywhere on the grid, how would I find the correct index in that situation?

GoToLoop

Re: How to remove objects in my program using a right mouse click

4 months ago

The same way you find the correct one to drag w/ left-click!

But instead of dragging it, you use remove() on it!

If you are indeed inside a loop, you had to use method get(index) to operate over an object's instance anyways!

Just remember to use a backwards loop! Where its iterator starts w/ maximum value and ends when reaches 0.

You can find an example of me using it @ this post below on program Multiple Bullets:

http://forum.processing.org/topic/shoot-multiple-bullets

PhiLho

Re: How to remove objects in my program using a right mouse click

4 months ago

"} else {"
If not LEFT click, it is not necessarily a RIGHT click! Lot of mouse buttons today have at least three buttons. Ie. you can also have MIDDLE cliick...

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