playcanvas
Version:
Open-source WebGL/WebGPU 3D engine for the web
71 lines (70 loc) • 1.64 kB
JavaScript
import { MOUSEBUTTON_NONE } from "./constants.js";
function isMousePointerLocked() {
return !!(document.pointerLockElement || document.mozPointerLockElement || document.webkitPointerLockElement);
}
class MouseEvent {
x = 0;
y = 0;
dx = 0;
dy = 0;
button = MOUSEBUTTON_NONE;
buttons;
wheelDelta = 0;
element;
ctrlKey = false;
altKey = false;
shiftKey = false;
metaKey = false;
event;
constructor(mouse, event) {
let coords = {
x: 0,
y: 0
};
if (event) {
if (event instanceof MouseEvent) {
throw Error("Expected MouseEvent");
}
coords = mouse._getTargetCoords(event);
} else {
event = {};
}
if (coords) {
this.x = coords.x;
this.y = coords.y;
} else if (isMousePointerLocked()) {
this.x = 0;
this.y = 0;
} else {
return;
}
if (event.type === "wheel") {
if (event.deltaY > 0) {
this.wheelDelta = 1;
} else if (event.deltaY < 0) {
this.wheelDelta = -1;
}
}
if (isMousePointerLocked()) {
this.dx = event.movementX || event.webkitMovementX || event.mozMovementX || 0;
this.dy = event.movementY || event.webkitMovementY || event.mozMovementY || 0;
} else {
this.dx = this.x - mouse._lastX;
this.dy = this.y - mouse._lastY;
}
if (event.type === "mousedown" || event.type === "mouseup") {
this.button = event.button;
}
this.buttons = mouse._buttons.slice(0);
this.element = event.target;
this.ctrlKey = event.ctrlKey ?? false;
this.altKey = event.altKey ?? false;
this.shiftKey = event.shiftKey ?? false;
this.metaKey = event.metaKey ?? false;
this.event = event;
}
}
export {
MouseEvent,
isMousePointerLocked
};