The problem: I'm trying to create a simple drawing app using p5.js. Instead of the standard cursor image, I'd like to show a circle at my cursor location that represents the size of the drawing brush.
Potential solution 1: Replace the cursor using the cursor()
function native to p5.
Why it doesn't work: The p5 cursor function only takes the following parameters:
ARROW, CROSS, HAND, MOVE, TEXT, or WAIT, or path for image
As such, there's no native way to replace the cursor using the ellipse class.
Potential solution 2: Use the noCursor()
function and then draw the circle at the cursor location, while also drawing the background, as such:
var brushSize = 50;
function setup() {
createCanvas(1080,720);
noCursor();
}
function draw() {
background(100);
ellipse(mouseX,mouseY,brushSize);
}
Why it doesn't work: While this solution gets the desired effect i.e. replacing the cursor with a circle the size of the brush, the constantly updating background prevents me from actually drawing to the canvas with the brush when I want to.
Is there some way I can replace the cursor without actually drawing the ellipse to the canvas? Is there any way to save and then instantly reload a canvas in p5? I couldn't find such a method searching through the API docs. Any hints are appreciated.