How do I get the coordinates of a mouse click on a canvas element?

Question

What\'s the simplest way to add a click event handler to a canvas element that will return the x and y coordinates of the click (relative to the canvas element)?

No

Answer 1

ThreeJS r77

var x = event.offsetX == undefined ? event.layerX : event.offsetX;
var y = event.offsetY == undefined ? event.layerY : event.offsetY;

mouse2D.x = ( x / renderer.domElement.width ) * 2 - 1;
mouse2D.y = - ( y / renderer.domElement.height ) * 2 + 1;

After trying many solutions. This worked for me. Might help someone else hence posting. Got it from here