random color

General Discussion Other

sesesew

in General Discussion • Other • 2 years ago

hi all,

i draw a rect:

fill(255,0,0);
rect(0,0,100,100);

how i can this rect. to fill (255,0,0) OR (123,23,12) OR (148,140,117) every start.
sory my english.

thx

Replies(4)

amnon.owed

Re: random color

2 years ago

Put the colors in an array of colors, then cycle through them.

Code Example

color[] colors = new color[3]; // define an array of 3 colors
int colorCount; // define int to cycle through the colors
void setup() {
size(200,200);
colors[0] = color(255,0,0); // set the first color (at array position 0)
colors[1] = color(123,23,12); // set the second color (at array position 1)
colors[2] = color(148,140,117); // set the third color (at array position 2)
}
void draw() {
background(0);
fill(colors[colorCount]); // fill with a color from the array => 0, 1 or 2
rect(50,50,100,100);
}
void mousePressed() {
colorCount++; // if mousePressed add 1 to colorCount
if (colorCount>2) colorCount=0; // if colorCount is higher than 2, set colorCount to 0
}

sesesew

Re: random color

2 years ago

thanks a lot.

but how i can do this without mouse pressed?

i mean ;

can i fill the rect. with a color from the array 0 or 1 or 2 random every start?

jun.jk

Re: random color

2 years ago

color[] colors = new color[3]; // define an array of 3 colors
int colorCount = int(random(3)); // generate a random integer 0, 1, or 2
void setup() {
size(200,200);
colors[0] = color(255,0,0); // set the first color (at array position 0)
colors[1] = color(123,23,12); // set the second color (at array position 1)
colors[2] = color(148,140,117); // set the third color (at array position 2)
}
void draw() {
background(0);
fill(colors[colorCount]); // fill with the color randomly selected from the array
rect(50,50,100,100);
}

sesesew

Re: random color

2 years ago

it works!

thank you.

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random color

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