Function capture_metrics 

pub fn capture_metrics() -> PerfMetrics

Capture current performance metrics.

Returns live metrics populated by the dev server, or default zeros if the server is not running or metrics have not been set.

Examples

use cvkg_cli::devtools::capture_metrics;
let metrics = capture_metrics();
// Default metrics should have zero values
assert_eq!(metrics.fps, 0.0);
assert_eq!(metrics.node_count, 0);