Processing: Expandign circle

Programming Questions

kajeevan

in Programming Questions • 10 months ago

So I'm trying to expand a circle using a boolean function

boolean expanding = false

and then I have if (expanding){

circleSize= circleSize + 3;

circleAlpha=circleAlpha-1;

}

But the problem is I want it to EXPAND- and revert back to its original shape. So I'm trying to put this in :

void mousePressed(){

if expanding = true; expanding = false;

else expanding = false;

}

Basically, when the mouse is pressed I want the circle --> Expand, but when the mouse is pressed the second time, the expansion stops and is back to the normal circle? How would I achieve this ...This code keeps giving me errors! I'm new to this, someone help!

Replies(2)

v.k.

Re: Processing: Expandign circle

10 months ago

You may say in mousePressed:

expanding = ! expanding

It will reverse the value of the boolean. True if false or false if true.

Than in draw() you might say:

if(expanding)

{

//expand code

}else

{

//not expanding code

}

Chrisir

Re: Processing: Expandign circle

10 months ago

v.k. is right of course

btw
your original

void mousePressed(){
if expanding = true; expanding = false;
else expanding = false;}

is better like this:

void mousePressed(){
if (expanding == true)
expanding = false;
else
expanding = false;}

note the double == for checking equalness

but it does the same as v.k.s

expanding = ! expanding;

Top Reply