Function bloom_update_model_animation

native/linux/src/lib.rs:1554–1571

(handle: f64, anim_index: f64, time: f64, scale: f64, px: f64, py: f64, pz: f64, rot_y: f64)

#[no_mangle]
pub extern "C" fn bloom_update_model_animation(handle: f64, anim_index: f64, time: f64, scale: f64, px: f64, py: f64, pz: f64, rot_y: f64) {
    // Take a single Y-axis angle (radians) instead of sin/cos, so the
    // engine reconstructs both with full precision + correct signs.
    // Older callers that passed (rot_sin, rot_cos) hit a Perry-ARM64
    // 9th-arg garbling bug AND a sqrt(1-sin²) workaround that lost
    // the sign of cos — model rotation was correct only on half the
    // circle. 8-arg signature dodges both issues. Matches macOS.
    let rot_y_f = rot_y as f32;
    let rot_sin = rot_y_f.sin();
    let rot_cos = rot_y_f.cos();
    let eng = engine();
    eng.models.update_model_animation(handle, anim_index as usize, time as f32);
    if let Some(anim) = eng.models.get_animation(handle) {
        if !anim.joint_matrices.is_empty() {
            eng.renderer.set_joint_matrices_scaled(&anim.joint_matrices, scale as f32, [px as f32, py as f32, pz as f32], rot_sin, rot_cos);
        }
    }
}

// --- Music FFI ---