Gradually decreasing size of ellipse.

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skttrbrai..

Gradually decreasing size of ellipse.

in Programming Questions • 2 years ago

I think my question might be relatively simple, although I'm not quite sure where to begin coding what I'm trying to do.

I have an ellipse in the center of my sketch, and I basically want it to gradually decrease in size over time. I'm just not sure how to make the ellipse shrink, although I feel like I probably need to use a for loop? I'm still relatively new to Processing, so hopefully this'll come easier eventually.

Thanks for the help, and if you have any questions lemme know!

Replies(2)

jeff_g

Re: Gradually decreasing size of ellipse.

2 years ago

The size of the ellipse is defined by the last two variables. So you could just decrease it through the draw.. like this..

float esize = 50;
boolean pulse = false;
void setup(){
size(300,200);
smooth();
}
void draw() {
background(0);
fill(0,100,200);
ellipse(width/2,height/2,esize,esize);
if (pulse) {
esize = esize + .5;
if (esize > 50) {
pulse = false;
}
} else {
esize = esize - .5;
if (esize < 20) {
pulse = true;
}
}
}

skttrbrai..

Re: Gradually decreasing size of ellipse.

2 years ago

Thanks a ton! This actually really helps :)

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