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Index › Programming Questions & Help › Syntax Questions › OK...had a thought.

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OK...had a thought. (Read 782 times)

jai

OK...had a thought.
Feb 14^th, 2007, 1:11am

I just had a thought for a project, actually its my final project. And was wondering if this was possible.

I want to use each keypress on a keyboard to create an output graphic that lasts maybe 3 seconds. For instance pressing a key would create a sphere maybe coloured for example.

Then having the spheres or graphics laid out in a grid of 54 (7x7 and the remainder).

If anyone could start me off that would be great.

Thanks in advance,

Jason

jai

Re: OK...had a thought.
Reply #1 - Feb 14^th, 2007, 5:52pm

Ive started to make the grid (not sure if this is long winded)

void setup() {
size (430, 430);
}

void draw () {

//first line

rect(25, 25, 50, 50);
rect(80, 25, 50, 50);
rect(135, 25, 50, 50);
rect(190, 25, 50, 50);
rect(245, 25, 50, 50);
rect(300, 25, 50, 50);
rect(355, 25, 50, 50);

//second line

rect(25, 80, 50, 50);
rect(80, 80, 50, 50);
rect(135, 80, 50, 50);
rect(190, 80, 50, 50);
rect(245, 80, 50, 50);
rect(300, 80, 50, 50);
rect(355, 80, 50, 50);

//third line

rect(25, 135, 50, 50);
rect(80, 135, 50, 50);
rect(135, 135, 50, 50);
rect(190, 135, 50, 50);
rect(245, 135, 50, 50);
rect(300, 135, 50, 50);
rect(355, 135, 50, 50);

//fourth line

rect(25, 190, 50, 50);
rect(80, 190, 50, 50);
rect(135, 190, 50, 50);
rect(190, 190, 50, 50);
rect(245, 190, 50, 50);
rect(300, 190, 50, 50);
rect(355, 190, 50, 50);

//fifth line

rect(25, 245, 50, 50);
rect(80, 245, 50, 50);
rect(135, 245, 50, 50);
rect(190, 245, 50, 50);
rect(245, 245, 50, 50);
rect(300, 245, 50, 50);
rect(355, 245, 50, 50);

//sixth line

rect(25, 300, 50, 50);
rect(80, 300, 50, 50);
rect(135, 300, 50, 50);
rect(190, 300, 50, 50);
rect(245, 300, 50, 50);
rect(300, 300, 50, 50);
rect(355, 300, 50, 50);

//seventh line

rect(25, 355, 50, 50);
rect(80, 355, 50, 50);
rect(135, 355, 50, 50);
rect(190, 355, 50, 50);
rect(245, 355, 50, 50);
rect(300, 355, 50, 50);
rect(355, 355, 50, 50);

}

Then I tried implementing the 'key' code to change each of the blocks a different colour with a corresponding 'key' but didn't manage to do it.

void setup() {
size (430, 430);
}

void draw () {

//first line

if (keyPressed) {
if (key == 'b' || key == 'B') {
fill (0);
}
} else {
fill (255);
}
rect(25, 25, 50, 50);
}

I can only do the first one and not sure how to go about doing the rest. I have a feeling that its quite simple but I can't find any examples on how to do it. Can anyone help?

mhuyck YaBB Newbies Offline Posts: 45 MA	Re: OK...had a thought. Reply #2 - Feb 14^th, 2007, 6:43pm Hi Jason- Try starting with this example project, which is somewhat close to your idea: http://processing.org/learning/examples/keyboardfunctions.html Putting your logic into the keyPressed() method as done in this example should simplify the coding quite a bit. -Matt

jai

Re: OK...had a thought.
Reply #3 - Feb 14^th, 2007, 6:50pm

mhuyck wrote on Feb 14^th, 2007, 6:43pm:

Hi Jason-

Try starting with this example project, which is somewhat close to your idea:

http://processing.org/learning/examples/keyboardfunctions.html

Putting your logic into the keyPressed() method as done in this example should simplify the coding quite a bit.

-Matt

Thanks Matt will look into it now!... Upon looking at it... I have literally no idea where to start looking =S will have a go and if I can't get anywhere I shall post again.

Jason

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