For virtual products

This plugin is great, thank you saved me a lot of time to fix the shipping calculator.
I have 2 suggestions which i find very useful at least in my case.
1-suggestion: is to create a condition of the product if virtual the shortcode or the calculator will not show.
2-suggestion: is to add a tick box if you want the calculator to be added in the checkout box.

Here’s my solution since i have some products are virtual no shipping is required, for others could be downloadable or anything inside the product or post meta key.

I added another shortcode including your shortcode with conditions.

// Shortcode to conditionally display the shipping calculator
function conditional_shipping_calculator_shortcode() {
    // Check if the current page is a product page
    if (is_product()) {
        $product_id = get_the_ID();
        
        // Check if the product is virtual using post meta
        $is_virtual = get_post_meta($product_id, '_virtual', true);

        if ($is_virtual == 'yes') {
            // Product is virtual, return an empty string (or any other content/message you prefer)
            return 'This product is virtual and does not require shipping.';
        }
        
        // Render the shipping calculator shortcode
        return do_shortcode('[pi_shipping_calculator]');
    }

    return ''; // Return empty string if not a product page
}
add_shortcode('conditional_shipping_calculator', 'conditional_shipping_calculator_shortcode');

Hope this helps.