createControls.navigation#onChange¶
Summary¶
createControls.navigation#onChange registers a callback fired after every enabled update() call, even if there was no input delta. Immediate operations such as setCamera(), reset(), and non-animated view/fit changes also notify it.
The method returns an unsubscribe function for listener removal.
Syntax¶
WasmGPU.createControls.navigation().onChange(listener: () => void): () => void
const unsubscribe = controls.onChange(listener);
Parameters¶
| Name | Type | Required | Description |
|---|---|---|---|
listener |
() => void |
Yes | Callback invoked after control state changes are applied. |
Returns¶
() => void - Unsubscribe function that removes the listener.
Example¶
const canvas = document.querySelector("canvas");
const wgpu = await WasmGPU.create(canvas);
const camera = wgpu.createCamera.perspective({ fov: 50, aspect: canvas.clientWidth / canvas.clientHeight, near: 0.1, far: 1000 });
const controls = wgpu.createControls.navigation(camera, canvas);
const unsubscribe = controls.onChange(() => {
console.log("camera moved", camera.position);
});
setTimeout(() => unsubscribe(), 5000);