I've been experimenting with a canvas script that resembles dottydots. Everything is functioning correctly, but I'm looking to adjust its position on the canvas. I attempted using position:absolute, which did move the canvas visually, but the working area of the canvas (where mouse interactions occur) remained in its original position.
It seems like you may be encountering difficulties in obtaining the correct mouse coordinates.
To ensure accuracy, consider utilizing getBoundingClientRect to retrieve them correctly.
var mousePos = [-1, -1];
var canvasRect, canvasLeft, canvasTop;
function updateCanvasRect() {
canvasRect = canvas.getBoundingClientRect();
canvasLeft = canvasRect.left;
canvasTop = canvasRect.top;
}
function updateMousePos(e) {
mousePos[0] = e.clientX - canvasLeft;
mousePos[1] = e.clientY - canvasTop;
}
If you are not using width/height in CSS to scale the canvas, the formula would be appropriate.
Remember to call
updateCanvasRect
after the document has loaded, and then again on scroll if scrolling is permitted.
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