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import type { Camera } from "$lib/splat.js/cameras/Camera";
import { Matrix4 } from "$lib/splat.js/math/Matrix4";
export function getViewMatrix(camera: Camera) {
const R = camera.rotation.buffer;
const t = camera.position.flat();
const camToWorld = [
[R[0], R[1], R[2], 0],
[R[3], R[4], R[5], 0],
[R[6], R[7], R[8], 0],
[
-t[0] * R[0] - t[1] * R[3] - t[2] * R[6],
-t[0] * R[1] - t[1] * R[4] - t[2] * R[7],
-t[0] * R[2] - t[1] * R[5] - t[2] * R[8],
1,
],
].flat();
return new Matrix4(...camToWorld);
}
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