P5.js requires manual clearing of the canvas due to its unique design

When working in P5.js, I notice that any shape I draw seems to leave a faint trail as it moves.

For example, when drawing an ellipsehttps://i.sstatic.net/C61YO.png

Here's the code I used for testing purposes:

function draw() {
    if (times < 100) {
        fill(255);
        ellipse(times, times, 10, 10);
        times++
    }
}

I attempted incorporating erase(), which did fix the issue along with redrawing the background. However, this solution would clear the canvas every frame, which is not ideal for my intended outcome.

Answer №1

In order to clear the canvas, you must use the background() function. This function will fill the entire canvas with the specified color.

For example:

function draw() {
    if (counter < 100) {

        background(255, 255, 255);

        fill(255);
        ellipse(counter, counter, 10, 10);
        counter++
    }
}

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