Function parse_orientation_angle 

pub fn parse_orientation_angle(
    label: &str,
    confidence: f32,
    threshold: Option<f32>,
    valid_angles: &[f32],
) -> OrientationResult

Parses orientation angle from various label formats

This function provides robust parsing that can handle:

• String labels: “0”, “90”, “180”, “270”
• Numeric strings: “0.0”, “90.0”, etc.
• Direct numeric values when converted to strings

Arguments

• label - The label string to parse
• confidence - The confidence score for this prediction
• threshold - Optional confidence threshold
• valid_angles - Set of valid angles to accept

Returns

An OrientationResult containing the parsed angle and confidence information